R3112x SERIES
LOW VOLTAGE DETECTOR WITH OUTPUT DELAY
NO. EA-087-120423
1
OUTLINE
The R3112x Series are CMOS-based voltage detector ICs with high detector threshold accuracy and ultra-low
supply current, which can be operated at an extremely low voltage and is used for system reset as an example.
Each of these ICs consists of a voltage reference unit, a comparator, resistor net for detector threshold setting,
an output driver, a hysteresis circuit, and an output delay circuit. The detector threshold is fixed with high
accuracy internally and does not require any adjustment. Two output types, Nch open drain type and CMOS type
are available.
Three types of packages, SOT-23-5, small SC-82AB, SC-88A and ultra-small SON1612-6 can be selected so
that high density mounting on boards is possible.
FEATURES
• Built-in Output Delay Circuit............................................... Typ. 100ms with an external capacitor: 0.022μF
• Supply Current ................................................................... Typ. 0.5μA (R3112x27xA/C, VDD=2.6V)
• Operating Voltage .............................................................. 0.7 to 6.0V (Topt=25°C)
• Detector Threshold............................................................. 0.9V to 5.0V (0.1V steps)
• Detector Threshold Accuracy............................................. ±2.0%
• Temperature-Drift Coefficient of Detector Threshold ............Typ. ±100ppm/°C
• Output Types...................................................................... Nch Open Drain and CMOS
• Packages ........................................................................... SON1612-6, SC-82AB, SC-88A, SOT-23-5
APPLICATIONS
• CPU and Logic Circuit Reset
• Battery Checker
• Window Comparator
• Wave Shaping Circuit
• Battery Back-up Circuit
• Power Failure Detector
R3112x
2
BLOCK DIAGRAMS
R3112xxxxA R3112xxxxC
GND
V
DD
-
+
Vref
OUT
R
D
C
D
GND
V
DD
-
+
Vref
OUT
R
D
C
D
SELECTION GUIDE
The package type, the detector threshold, and the output type for the ICs can be selected at the users’
request.
Product Name Package Quantity per Reel Pb Free Halogen Free
R3112Dxx1∗-TR-FE SON1612-6 4,000 pcs Yes Yes
R3112Qxx1∗-TR-FE SC-82AB 3,000 pcs Yes Yes
R3112Qxx2∗-TR-FE SC-88A 3,000 pcs Yes Yes
R3112Nxx1∗-TR-FE SOT-23-5 3,000 pcs Yes Yes
xx : The detector threshold can be designated in the range from 0.9V(09) to 5.0V(50) in 0.1V steps.
∗ : Designation of Output Type
(A) Nch Open Drain
(C) CMOS
R3112x
3
PIN CONFIGURATION
z SON1612-6 z SC-82AB z SC-88A z SOT-23-5
1 2 3
6 5 4
(mark side)
4 3
12
(mark side)
54
13
2
(mark side)
1 2 3
4
5
(mark side)
PIN DESCRIPTION
• SON1612-6
Pin No Symbol Pin Description
1 OUT Output Pin (Output "L" at detection)
2 GND Ground Pin
3 CD Pin for External Capacitor (for setting output delay)
4 NC No Connection
5 GND Ground Pin
6 VDD Voltage Supply Pin
• SC-82AB
Pin No Symbol Pin Description
1 VDD Voltage Supply Pin
2 GND Ground Pin
3 CD Pin for External Capacitor (for setting output delay)
4 OUT Output Pin (Output "L" at detection)
• SC-88A
Pin No Symbol Pin Description
1 VDD Voltage Supply Pin
2 NC No Connection
3 GND Ground Pin
4 CD Pin for External Capacitor (for setting output delay)
5 OUT Output Pin (Output "L" at detection)
• SOT-23-5
Pin No Symbol Pin Description
1 OUT Output Pin (Output "L" at detection)
2 VDD Voltage Supply Pin
3 GND Ground Pin
4 NC No Connection
5 CD Pin for External Capacitor (for setting output delay)
R3112x
4
ABSOLUTE MAXIMUM RATINGS
Symbol Item Rating Unit
VDD Supply Voltage 6.5 V
Output Voltage (CMOS) VSS−0.3 to VDD+0.3 V
VOUT Output Voltage (Nch) VSS−0.3 to 6.5 V
IOUT Output Current 20 mA
Power Dissipation (SON1612-6)∗ 500
Power Dissipation (SC-82AB)∗ 380
Power Dissipation (SC-88A)∗ 380
PD
Power Dissipation (SOT-23-5)∗ 420
mW
Topt Operating Temperature Range −40 to 85 °C
Tstg Storage Temperature Range −55 to 125 °C
∗) For Power Dissipation, please refer to PACKAGE INFORMATION.
ABSOLUTE MAXIMUM RATINGS
Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the
permanent damages and may degrade the life time and safety for both device and system using the device
in the field.
The functional operation at or over these absolute maximum ratings is not assured.
RECOMMENDED OPERATING CONDITIONS (ELECTRICAL CHARACTERISTICS)
All of electronic equipment should be designed that the mounted semiconductor devices operate within the
recommended operating conditions. The semiconductor devices cannot operate normally over the
recommended operating conditions, even if when they are used over such conditions by momentary
electronic noise or surge. And the semiconductor devices may receive serious damage when they continue
to operate over the recommended operating conditions.
R3112x
5
ELECTRICAL CHARACTERISTICS
• R3112xxxxA/C Topt=25°C
Symbol Item Conditions Min. Typ. Max. Unit
-VDET Detector Threshold -VDET
×0.98 -VDET
×1.02 V
VHYS Detector Threshold
Hysteresis -VDET
×0.03
-VDET
×0.05
-VDET
×0.07 V
VDD=-VDET−0.1V 0.6 2.0
-VDET<1.1V VDD=-VDET+1.0V 0.5 2.0
VDD=-VDET−0.1V 0.7 2.5
1.1V ≤-VDET<1.6V VDD=-VDET+1.0V 0.5 2.0
VDD=-VDET−0.1V 1.0 3.0
1.6V ≤-VDET<3.1V VDD=-VDET+1.0V 0.5 2.5
VDD=-VDET−0.1V 1.2 3.0
3.1V ≤-VDET<4.1V VDD=-VDET+1.0V 0.6 2.5
VDD=-VDET−0.1V 1.5 3.0
ISS Supply Current
4.1V ≤-VDET VDD=-VDET+1.0V 0.6 2.5
μA
VDDH
Maximum Operating Voltage
6.0 V
Topt=25°C 0.7
VDDL Minimum Operating
Voltage∗ −40°C≤Topt≤85°C 0.8
V
VDS=0.05V
VDD=0.7V 0.01 0.12
-VDET<1.1V VDS=0.50V
VDD=0.85V 0.05 0.9
1.1V ≤-VDET<1.6V VDS=0.50V
VDD=1.00V 0.2 1.8
Nch
1.6V ≤-VDET VDS=0.50V
VDD=1.50V 1.0 3.0
mA
-VDET<4.0V VDS=−2.1V
VDD=4.50V 1.5 3.5
IOUT Output Current
(Driver Output Pin)
Pch
4.0V ≤-VDET VDS=−2.1V
VDD=6.00V 2.0 4.5
mA
VTCD CD pin Threshold
Voltage VDD=-VDET×1.1V VDD
×0.3
VDD
×0.5
VDD
×0.7 V
VDS=0.1V, VDD=0.7V 20 70
-VDET<1.1V
V
DS
=
0.50V, V
DD
=
0.85V
10 400
1.1V
≤-V
DET
<1.6V
V
DS
=
0.50V, V
DD
=
1.00V
50 450
ICD CD pin Output Current
1.6V ≤-VDET
V
DS
=
0.50V, V
DD
=
1.50V
200 500
μA
RD
Output Delay Resistance
3.25 6.5 13 MΩ
Δ-VDET/
ΔTopt
Detector Threshold
Temperature Coefficient
−40°C≤Topt≤85°C ±100 ppm/
°C
∗) Minimum Operating Voltage means the value of input voltage when output voltage maintains 0.1V or less.
(In the case of Nch Open Drain Type, Output pin is pulled up with a resistance of 470kΩ to 5.0V.)
R3112x
6
ELECTRICAL CHARACTERISTICS BY DETECTOR THRESHOLD
Detector
Threshold Hysteresis
Range Supply Current 1 Supply Current 2 Output Current 1 Output Current 2
Product Code
-VDET[V] VHYS[V] ISS1[μA] ISS2[μA] IOUT1[mA] IOUT2[mA]
Min. Typ. Max. Min. Typ. Max.
Condi-
tions
Typ. Max.
Condi-
tions
Typ. Max.
Condi-
tions
Min. Typ. Conditions Min. Typ.
R3112x09xA/C 0.882 0.900 0.918 0.027 0.045 0.063
R3112x10xA/C 0.980 1.000 1.020 0.030 0.050 0.070
0.6 2.0
V
DS=
0.5V
V
DD=
0.85V
0.05 0.9
R3112x11xA/C 1.078 1.100 1.122 0.033 0.055 0.077
R3112x12xA/C 1.176 1.200 1.224 0.036 0.060 0.084
R3112x13xA/C 1.274 1.300 1.326 0.039 0.065 0.091
R3112x14xA/C 1.372 1.400 1.428 0.042 0.070 0.098
R3112x15xA/C 1.470 1.500 1.530 0.045 0.075 0.105
0.7 2.5
0.5 2.0 V
DS=
0.5V
V
DD=
1.0V
0.2 1.8
R3112x16xA/C 1.568 1.600 1.632 0.048 0.080 0.112
R3112x17xA/C 1.666 1.700 1.734 0.051 0.085 0.119
R3112x18xA/C 1.764 1.800 1.836 0.054 0.090 0.126
R3112x19xA/C 1.862 1.900 1.938 0.057 0.095 0.133
R3112x20xA/C 1.960 2.000 2.040 0.060 0.100 0.140
R3112x21xA/C 2.058 2.100 2.142 0.063 0.105 0.147
R3112x22xA/C 2.156 2.200 2.244 0.066 0.110 0.154
R3112x23xA/C 2.254 2.300 2.346 0.069 0.115 0.161
R3112x24xA/C 2.352 2.400 2.448 0.072 0.120 0.168
R3112x25xA/C 2.450 2.500 2.550 0.075 0.125 0.175
R3112x26xA/C 2.548 2.600 2.652 0.078 0.130 0.182
R3112x27xA/C 2.646 2.700 2.754 0.081 0.135 0.189
R3112x28xA/C 2.744 2.800 2.856 0.084 0.140 0.196
R3112x29xA/C 2.842 2.900 2.958 0.087 0.145 0.203
R3112x30xA/C 2.940 3.000 3.060 0.090 0.150 0.210
1.0 3.0 0.5 2.5
R3112x31xA/C 3.038 3.100 3.162 0.093 0.155 0.217
R3112x32xA/C 3.136 3.200 3.264 0.096 0.160 0.224
R3112x33xA/C 3.234 3.300 3.366 0.099 0.165 0.231
R3112x34xA/C 3.332 3.400 3.468 0.102 0.170 0.238
R3112x35xA/C 3.430 3.500 3.570 0.105 0.175 0.245
R3112x36xA/C 3.528 3.600 3.672 0.108 0.180 0.252
R3112x37xA/C 3.626 3.700 3.774 0.111 0.185 0.259
R3112x38xA/C 3.724 3.800 3.876 0.114 0.190 0.266
R3112x39xA/C 3.822 3.900 3.978 0.117 0.195 0.273
R3112x40xA/C 3.920 4.000 4.080 0.120 0.200 0.280
1.2 3.0 0.6 2.5
R3112x41xA/C 4.018 4.100 4.182 0.123 0.205 0.287
R3112x42xA/C 4.116 4.200 4.284 0.126 0.210 0.294
R3112x43xA/C 4.214 4.300 4.386 0.129 0.215 0.301
R3112x44xA/C 4.312 4.400 4.488 0.132 0.220 0.308
R3112x45xA/C 4.410 4.500 4.590 0.135 0.225 0.315
R3112x46xA/C 4.508 4.600 4.692 0.138 0.230 0.322
R3112x47xA/C 4.606 4.700 4.794 0.141 0.235 0.329
R3112x48xA/C 4.704 4.800 4.896 0.144 0.240 0.336
R3112x49xA/C 4.802 4.900 4.998 0.147 0.245 0.343
R3112x50xA/C 4.900 5.000 5.100 0.150 0.250 0.350
V
DD
=
-V
DET
−
0.1V
1.5 3.0
V
DD
=
-V
DET
+
1.0V
0.6 2.5
V
DS=
0.05V
V
DD=
0.7V
0.01 0.12 Nch
V
DS=
0.5V
V
DD=
1.5V
1.0 3.0
R3112x
7
Output Current 3 Minim um Oper a ting
Voltage CD pin Threshold
Voltage CD pin Output
Current 1 CD pin Output
Current 2 Resistance for
Output Delay
Detector
Threshold
Temperature
IOUT3[mA] VDDL[V] VTCD[V] ICD1[μA] ICD2[μA] RD[MΩ] Δ-VDET/
ΔTopt
[ppm/°C]
Condition Min. Typ.
Condi-
tion
Max.
Condi-
tion
Max.
Condi-
tion
Min. Typ. Max.
Condi-
tion
Min. Typ.
Condi-
tion
Min. Typ. Min. Typ. Max.
Condi-
tion
Typ.
0.297 0.495 0.693
0.330 0.550 0.770
V
DS
=
0.5V
V
DD
=
0.85V
10 400
0.363 0.605 0.847
0.396 0.660 0.924
0.429 0.715 1.001
0.462 0.770 1.078
0.495 0.825 1.155
V
DS
=
0.5V
V
DD
=
1.0V
50 450
0.528 0.880 1.232
0.561 0.935 1.309
0.594 0.990 1.386
0.627 1.045 1.463
0.660 1.100 1.540
0.693 1.155 1.617
0.726 1.210 1.694
0.759 1.265 1.771
0.792 1.320 1.848
0.825 1.375 1.925
0.858 1.430 2.002
0.891 1.485 2.079
0.924 1.540 2.156
0.957 1.595 2.233
0.990 1.650 2.310
1.023 1.705 2.387
1.056 1.760 2.464
1.089 1.815 2.541
1.122 1.870 2.618
1.155 1.925 2.695
1.188 1.980 2.772
1.221 2.035 2.849
1.254 2.090 2.926
V
DS
=
−
2.1V
V
DD
=
4.5V
1.5 3.5
1.287 2.145 3.003
1.320 2.200 3.080
1.353 2.255 3.157
1.386 2.310 3.234
1.419 2.365 3.311
1.452 2.420 3.388
1.485 2.475 3.465
1.518 2.530 3.542
1.551 2.585 3.619
1.584 2.640 3.696
1.617 2.695 3.773
Pch
V
DS
=
−
2.1V
V
DD
=
6.0V
2.0 4.5
Topt
=
25
°
C 0.7
−
40
°
C
<
=
Topt
<
=
85
°
C
0.8
V
DD
=
(-V
DET
)
×
1.1V
1.650 2.750 3.850
V
DS
=
0.1V
V
DD
=
0.7V
20 70
V
DS
=
0.5V
V
DD
=
1.5V
200 500
3.25 6.5 13.0
−
40
°
C
<
=
Topt
<
=
85
°
C
±
100
R3112x
8
OPERATION
VDD
Pch
Rc
Tr.1 Tr.2
Rb
Ra
Nch
RD
OUT
CD
GND
+
-
Vref
Schmitt Trigger
Comparator
Current Source
Output Capacitor
Fig. 1 Block Diagram with an external capacitor
t
D
GND
GND
V
DDL
-
V
DET
+V
DET
Detector Threshold
Released Voltage
Minimum Operating Voltage
12 3 4 5
A B
Detector Threshold
Hysteresis
Supply Voltage
(V
DD
)
Output Voltage
(V
OUT
)
t
PHL
Detect
Delay Time
Step 1 2 3 4 5
Comparator (
−
)
Pin Input Voltage I II II II I
Comparator Output L H Indefinite H L
Tr.1,2 OFF ON Indefinite ON OFF
Pch ON OFF Indefinite OFF ON
Output Tr.
Nch OFF ON Indefinite ON OFF
I×V
DD
Rb
+
Rc
Ra+Rb+Rc
II ×V
DD
Rb
Ra+Rb
Fig. 2 Operation Diagram
1. Output voltage is equal to supply voltage. (As for Nch open drain type, equal to pull-up voltage.)
2. When the supply voltage is down to the detector threshold voltage level(Point A),
Vref≥VDD×(Rb+Rc)/(Ra+Rb+Rc) is true, then output of the comparator is reversed from "L" to "H", therefore
output voltage becomes GND level.
3. When the supply voltage is lower than minimum operating voltage, the operation of output transistor is
indefinite. In the case of Nch open drain type, output voltage is equal to pull-up voltage.
4. Output Voltage becomes GND level.
5. When the supply voltage is higher than released voltage (Point B), Vref≤VDD×Rb/(Ra+Rb) is true, then
output of the comparator reaches the threshold level, and Output of Shmitt Trigger is reversed from "H" to
"L", then output voltage is equal to supply voltage. (As for Nch open drain type, equal to pull-up voltage.)
∗) The difference between released voltage and detector threshold voltage means hysteresis range voltage.
R3112x
9
• Operation of Output Delay
GND
GND
Released Voltage (+VDET)
CD Pin Threshold Voltage (VTCD)
Output Delay Time(tD)
Output Voltage
Capacitor Voltage
Supply Voltage
When the supply voltage which is higher than released voltage is forced to VDD pin, charge to an external
capacitor starts, then capacitor voltage increases. Until the capacitor voltage reaches to CD Pin threshold voltage,
output voltage maintains "L". When the capacitor voltage becomes higher than CD pin threshold voltage, output
voltage is reversed from "L" to "H". Where, the time interval between the rising edge of supply voltage and output
voltage reverse point means output delay time.
• Output Delay Time
Output Delay Time (tD) can be calculated with the next formula.
tD=0.69×RD×CD(s)
RD is internal resistor and set at 6.5MΩ(Typ.) typically. CD(F) describes the capacitance value of an external
capacitor. Therefore,
tD=0.69×6.5×106×CD(s)
R3112x
10
TEST CIRCUITS
∗Pull-up circuit is not necessary for CMOS Output type, or R3112xxxxC.
R3112x
V
DD
V
IN
I
SS
GND
R3112x
V
DD
OUT
+5V or V
DD
470kΩ
V
IN
GND
Supply Current Test Circuit Detector Threshold Test Circuit
VDD
OUT
VIN
VDS
GND
IOUT
R3112x
V
DD
OUT
V
IN
V
DD
+V
DS
GND
I
OUT
R3112x
Nch Driv er Output Current Test Circuit Pch Driver Output Current Test Circuit
∗Apply only to CMOS
VDD
CD
OUT
+5V or VDD
470kΩ
VIN
GND
VDS
R3112x
V
DD
C
D
V
IN
GND
V
DS
I
CD
R3112x
CD Pin Threshold Test Circuit CD Pin Output Current Test Circuit
Input
Voltage
(VDD)
Output
Voltage
(VOUT)
+VDET+2.0V or 0.6V
0.7V
GND
100%
50%
GND
tDtPHL
R3112x
V
DD
C
D
O
UT
+5V
470kΩ
V
IN
GND
C
D
Output Delay Time Test Circuit
R3112x
11
TYPICAL CHARACTERISTICS
1) Supply Current vs. Input Voltage
R3112x09xA/C R3112x13xA/C
1.5
1.2
0.9
0.6
0.3
0
Input Voltage V
IN
(V)
Supply Current I
ss
(μA)
01234567
Topt=85°C
-40°C
25°C
1.5
1.2
0.9
0.6
0.3
0
Input Voltage V
IN
(V)
Supply Current I
ss
(μA)
01234567
Topt=85°C
-40°C
25°C
R3112x27xA/C R3112x45xA/C
1.5
1.2
0.9
0.6
0.3
0
Input Voltage V
IN
(V)
Supply Current I
ss
(μA)
01234567
Topt=85°C
-40°C
25°C
2.0
1.6
1.2
0.8
0.4
0
Input Voltage V
IN
(V)
Supply Current I
ss
(μA)
01234567
Topt=85°C
-40°C
25°C
2) Detector Threshold vs. Temperature
R3112x09xA/C R3112x13xA/C
0.98
0.88
0.86
Temperature Topt(°C)
Detector Threshold/Released Voltage
VDET(V)
-50 -25 75 1000 25 50
0.90
0.92
0.94
0.96 +V
DET
-V
DET
1.42
1.28
1.26
Temperature Topt(°C)
Detector Threshold/Released Voltage
V
DET
(V)
-50 -25 75 1000 25 50
1.30
1.32
1.34
1.36
1.38
1.40
+V
DET
-V
DET
R3112x
12
R3112x27xA/C R3112x45xA/C
2.90
2.65
2.60
Temperature Topt(°C)
Detector Threshold/Released Voltage
VDET(V)
-50 -25 75 1000 25 50
2.70
2.75
2.80
2.85 +V
DET
-V
DET
4.75
4.40
4.35
Temperature Topt(°C)
Detector Threshold/Released Voltage
V
DET
(V)
-50 -25 75 1000 25 50
4.45
4.50
4.55
4.60
4.65
4.70 +V
DET
-V
DET
3) Output Volt age vs. Input Voltage
R3112x09xA/C R3112x09xA
1.0
0.8
0.6
0.4
0.2
0.0
Input Voltage V
IN
(V)
Output Voltage V
OUT
(V)
0 0.2 0.8 10.4 0.6
Nch Output Type: VDD pull up
Topt=-40°C
25°C
85°C
6.0
5.0
4.0
3.0
2.0
0.0
Input Voltage VIN(V)
Output Voltage VOUT(V)
0 0.2 0.8 10.4 0.6
1.0
5V pull up via 470kΩ
Topt=-40°C
25°C
85°C
R3112x13xA/C R3112x13xA
1.5
1.2
0.9
0.6
0.3
0
Input Voltage V
IN
(V)
Output Voltage V
OUT
(V)
0 0.3 1.2 1.50.6 0.9
Nch Output Type: V
DD
pull up
Topt=-40°C
25°C
85°C
6.0
5.0
4.0
3.0
2.0
0.0
Input Voltage V
IN
(V)
Output Voltage V
OUT
(V)
0 0.3 1.2 1.50.6 0.9
1.0
5V pull up via 470kΩ
Topt=-40°C
25°C
85°C
R3112x
13
R3112x27xA/C R3112x27xA
3.0
2.5
2.0
1.5
1.0
0.5
0.0
Input Voltage V
IN
(V)
Output Voltage V
OUT
(V)
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Nch Output Type: V
DD
pull up
Topt=-40°C
25°C
85°C
6.0
5.0
4.0
3.0
2.0
1.0
0.0
Input Voltage V
IN
(V)
Output Voltage V
OUT
(V)
0.0 0.5 1.0 1.5 2.0 2.5 3.0
5V pull up via 470kΩ
Topt=-40°C
25°C
85°C
R3112x45xA/C R3112x45xA
5.0
4.5
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0.0
Input Voltage V
IN
(V)
Output Voltage V
OUT
(V)
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Nch Output Type: V
DD
pull up
Topt=-40°C
25°C85°C
6.0
5.0
4.0
3.0
2.0
1.0
0.0
Input Voltage V
IN
(V)
Output Voltage V
OUT
(V)
0.0 0.5 1.0 2.0 3.5 4.0 5.02.5 3.01.5 4.5
5V pull up via 470kΩ
Topt=-40°C
25°C
85°C
4) Nch Driver Output Current vs. VDS
R3112x09xA/C R3112x13xA/C
1.2
1.0
0.6
0.4
0.2
0
VDS(V)
Output Current IOUT(mA)
0 0.2 0.4 0.6 0.8 1
0.8
Topt=25°C
VDD=0.85V
0.7V
2.5
2.0
1.5
1.0
0.5
0
VDS(V)
Output Current IOUT(mA)
0 0.2 0.4 0.6 0.8 1
Topt=25°C
VDD=1.0V
0.85V
0.7V
R3112x
14
R3112x27xA/C R3112x45xA/C
20
16
12
8
4
0
V
DS
(V)
Output Current I
OUT
(mA)
0 0.5 1 1.5 2 2.5
Topt=25°C
V
DD=2.5V
1.0V
1.5V
2.0V
20
16
12
8
4
0
VDS(V)
Output Current IOUT(mA)
0 0.5 1.5 3 3.5 421 2.5
Topt=25°C
VDD=2.5V
VDD=3.0V
VDD=4.0V
VDD=3.5V
1.0V
1.5V
2.0V
5) Nch Driver Output Current vs. Input Voltage
R3112x09xA/C R3112x13xA/C
2.0
1.5
1.0
0.5
0.0
Input Voltage V
IN
(V)
Output Current I
OUT
(mA)
0 0.2 0.4 0.6 0.8 1
Topt=25°C
-40°C
85°C
5
4
2
1
0
Input Voltage VIN(V)
Output Current IOUT(mA)
0 0.3 0.6 0.9 1.2 1.5
3
Topt=-40°C
85°C
25°C
R3112x27xA/C R3112x45xA/C
5
4
0
Input Voltage V
IN
(V)
Output Current I
OUT
(mA)
0 0.5 31 1.5 2 2.5
3
2
1
Topt=-40°C
85°C
25°C
5
4
0
Input Voltage V
IN
(V)
Output Current I
OUT
(mA)
012345
3
2
1
Topt=-40°C
85°C
25°C
R3112x
15
6) Pch Driver Output Current vs. Input Volt age
R3112x09xC R3112x13xC
6
1
0
Input Voltage VIN(V)
Output Current IOUT(mA)
01 4 67532
2
3
4
5
Topt=25°C
VDS=-2.1V
-0.5V
-1.0V
-1.5V
6
1
0
Input Voltage VIN(V)
Output Current IOUT(mA)
01 4 67532
2
3
4
5
Topt=25°C
VDS=-2.1V
-0.5V
-1.0V
-1.5V
R3112x27xC R3112x45xC
6
1
0
Input Voltage VIN(V)
Output Current IOUT(mA)
01 4 67532
2
3
4
5
Topt=25°C
VDS=-2.1V
-0.5V
-1.0V
-1.5V
6
1
0
Input Voltage VIN(V)
Output Current IOUT(mA)
01 4 67532
2
3
4
5
Topt=25°C
VDS=-2.1V
-0.5V
-1.0V
-1.5V
7) CD Pin Threshold Voltage vs. Temperature
R3112x09xA/C R3112x13xA/C
0.8
0.3
0.2
Temperature Topt(°C)
C
D
Pin Threshold Voltage V
TCD
(V)
-50 -25 75 1000 25 50
0.4
0.5
0.6
0.7
V
DD
=0.99V
1.0
0.5
0.4
Temperature Topt(°C)
C
D
Pin Threshold Voltage V
TCD
(V)
-50 -25 75 1000 25 50
0.6
0.7
0.8
0.9
V
DD
=1.43V
R3112x
16
R3112x27xA/C R3112x45xA/C
1.9
1.4
1.3
Temperature Topt(°C)
CD Pin Threshold Voltage VTCD(V)
-50 -25 75 1000 25 50
1.5
1.6
1.7
1.8
VDD=2.97V
2.9
2.4
2.3
Temperature Topt(°C)
C
D
Pin Threshold Voltage V
TCD
(V)
-50 -25 75 1000 25 50
2.5
2.6
2.7
2.8
V
DD
=4.95V
8) CD Pin Output Current vs. Input Voltage
R3112x09xA/C R3112x13xA/C
1.0
0.8
0.4
0.2
0
Input Voltage V
IN
(V)
C
D
Pin Output Current I
CD
(mA)
0 0.2 0.4 0.6 0.8 1
0.6
V
DS
=0.5V
Topt=-40°C
85°C
25°C
1.0
0.8
0.4
0.2
0
Input Voltage V
IN
(V)
C
D
Pin Output Current I
CD
(mA)
0 0.3 0.6 0.9 1.2 1.5
0.6
V
DS
=0.5V
Topt=-40°C
85°C
25°C
R3112x27xA/C R3112x45xA/C
1.0
0.8
0.4
0.2
0
Input Voltage VIN(V)
CD Pin Output Current ICD(mA)
0 0.5 1 2.5231.5
0.6
VDS=0.5V
Topt=-40°C
85°C
25°C
1.0
0.8
0.4
0.2
0
Input Voltage VIN(V)
C
D
Pin Output Current I
CD
(mA)
012 435
0.6
V
DS
=0.5V
Topt=-40°C
85°C
25°C
R3112x
17
9) CD Pin Output Current vs. VDS (Topt=25°C)
R3112x09xA/C R3112x13xA/C
0.7
0.6
0.3
0.2
0.1
0
VDS(V)
CD Pin Output Current ICD(mA)
0 0.2 0.4 0.6 0.8 1
0.4
0.5
Topt=25°C
V
DD
=0.85V
0.7V
1.0
0.7
0.3
0.2
0.1
0
V
DS
(V)
C
D
Pin Output Current I
CD
(mA)
0 0.2 0.4 0.6 0.8 1
0.6
0.8
0.9
0.4
0.5
Topt=25°C
VDD=1.0V
0.85V
0.7V
R3112x27xA/C R3112x45xA/C
3.0
2.0
1.0
0.5
0
V
DS
(V)
C
D
Pin Output Current I
CD
(mA)
0 0.5 1 1.5 2 2.5
2.5
1.5
Topt=25°C
VDD=2.5V
1.0V
1.5V
2.0V
4.5
2.0
1.0
0.5
0
VDS(V)
CD Pin Output Current ICD(mA)
0 0.5 1.5 2.5 3.5 41 2 3
2.5
3.0
3.5
4.0
1.5
Topt=25°C
V
DD
=4.0V
1.0V
2.0V
1.5V
2.5V
3.5V 3.0V
10) Output Delay Time vs. External Capacitance (Topt=25°C)
R3112x09xA/C R3112x13xA/C
1000
0.01
External Capacitance CD(μF)
Output Deley Time tx(ms)
0.0001 0.001 0.01 0.1
0.1
1
10
100
Topt=25°C
t
PHL
t
D
1000
0.01
External Capacitance CD(μF)
Output Delay tx(ms)
0.0001 0.001 0.01 0.1
0.1
1
10
100
Topt=25°C
t
PHL
t
D
R3112x
18
R3112x27xA/C R3112x45xA/C
1000
0.01
External Capacitance C
D
(μF)
Output Delay Time tx(ms)
0.0001 0.001 0.01 0.1
0.1
1
10
100
Topt=25°C
t
PHL
t
D
1000
0.01
External Capacitance C
D
(μF)
Output Delay Time tx(ms)
0.0001 0.001 0.01 0.1
0.1
1
10
100
Topt=25°C
t
PHL
t
D
11) Delay Circuit Resista nce vs. Temperature
R3112xxxxA/C
13
4
3
Temperature Topt(°C)
Delay Circuit Resistance R
D
(MΩ)
-50 -25 75 1000 25 50
7
6
5
8
9
12
11
10
R3112x
19
TECHNICAL NOTES
V
DD
R
V
DD
GND OUT
R3112x
V
DD
R1
R2
V
DD
GND OUT
R3112x
V
DD
R1
R2
V
DD
GND OUT
R3112x
Figure A Figure B Figure C
When R3112xxxxA (Nch open drain output type) is used in Figure A or Figure B, if impedance of voltage
supply pIn, VDD and VDD of this IC is large, detector threshold level would shift by voltage dropdown caused by
the consumption current of the IC itself. Released voltage may also shift and delay time for start-up might be
generated by this usage.
When R3112xxxxC (CMOS output type) is used in Figure A or Figure B, Output level could be unstable by
cross conduction current which is generated at detector threshold level or at released voltage level, therefore, do
not use R3112xxxxC with the connection in Figure A or Figure B.
The connection in Figure C may cause the oscillation in both R3112xxxxC (CMOS Output) and R3112xxxxA
(Nch Open Drain Output), therefore do not use R3112xxxxA/C Series with the connection in Figure C.
RICOHCOMPANY,LTD.
ElectronicDevicesCompany
●Higashi-ShinagawaOffice(InternationalSales)
3-32-3,Higashi-Shinagawa,Shinagawa-ku,Tokyo140-8655,Japan
Phone:+81-3-5479-2857Fax:+81-3-5479-0502
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●SemiconductorSupportCentre
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Phone:+31-20-5474-309Fax:+31-20-5474-791
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Phone:+86-21-5027-3200Fax:+86-21-5027-3299
RICOHCOMPANY,LTD.
ElectronicDevicesCompany
●Taipeioffice
Room109,10F-1,No.51,HengyangRd.,TaipeiCity,Taiwan(R.O.C.)
Phone:+886-2-2313-1621/1622Fax:+886-2-2313-1623
http://www.ricoh.com/LSI/
1.Theproductsandtheproductspecificationsdescribedinthisdocumentaresubjecttochangeor
discontinuationofproductionwithoutnoticeforreasons
suchasimprovement.Therefore,before
decidingtousetheproducts,pleaserefertoRicohsalesrepresentativesforthelatest
informationthereon.
2.Thematerialsinthisdocumentmaynotbecopiedorotherwisereproducedinwholeorinpart
withoutpriorwrittenconsentofRicoh.
3.Pleasebesuretotakeanynecessaryformalitiesunderrelevantlawsorregulationsbefore
exportingorotherwisetakingoutofyourcountrytheproductsorthetechnicalinformation
describedherein.
4.Thetechnicalinformationdescribedinthisdocumentshowstypicalcharacteristicsofand
exampleapplicationcircuitsfortheproducts.Thereleaseofsuchinformationisnottobe
construedasawarrantyoforagrantoflicenseunderRicoh'soranythirdparty'sintellectual
propertyrightsoranyotherrights.
5.
Theproductslistedinthisdocumentareintendedanddesignedforuseasgeneralelectronic
componentsinstandardapplications(officeequipment,telecommunicationequipment,
measuringinstruments,consumerelectronicproducts,amusementequipmentetc.).Those
customersintendingtouse
aproductinanapplicationrequiringextremequalityandreliability,
forexample,inahighlyspecificapplicationwherethefailureormisoperationoftheproduct
couldresultinhumaninjuryordeath(aircraft,spacevehicle,nuclearreactorcontrolsystem,
trafficcontrolsystem,automotiveand
transportationequipment,combustionequipment,safety
devices,lifesupportsystemetc.)shouldfirstcontactus.
6.Wearemakingourcontinuousefforttoimprovethequalityandreliabilityofourproducts,but
semiconductorproductsarelikelytofailwithcertainprobability.Inordertopreventanyinjuryto
personsordamagestopropertyresultingfromsuchfailure,customersshouldbecarefulenough
toincorporatesafetymeasuresintheirdesign,suchasredundancyfeature,firecontainment
featureandfail-safefeature.Wedonotassumeanyliability
orresponsibilityforanylossor
damagearisingfrommisuseorinappropriateuseoftheproducts.
7.Anti-radiationdesignisnotimplementedintheproductsdescribedinthisdocument.
8.
PleasecontactRicohsalesrepresentativesshouldyouhaveanyquestionsorcomments
concerningtheproductsorthetechnicalinformation.
RICOHCOMPANY,LTD.ElectronicDevicesCompany
■
Ricoh presented with the Japan Management Quality Award for 1999
.
Ricoh continually strives to promote customer satisfaction, and shares the achievements
of its management quality improvement program with people and society.
■Ricoh awarded ISO 14001 certification.
The Ricoh Group was awarded ISO 14001 certification, which is an international standard for
environmental management systems, at both its domestic and overseas production facilities.
Our current aim is to obtain ISO 14001 certification for all of our business offices.
Ricoh completed the organization of the Lead-free production for all of our products.
After Apr. 1, 2006, we will ship out the lead free products only. Thus, all products that
will be shipped from now on comply with RoHS Directive.