Rev.2.00, Jul.16.2004, page 1 of 7
HD26LS32A
Quadruple Differential Line Receivers With 3 State Outputs
REJ03D0296–0200Z
(Previous ADE-205-578 (Z))
Rev.2.00
Jul.16.2004
Description
The HD26LS32A features quadruple line receivers designed to meet the specs of EIA standard RS-422A and RS-423.
This device operates from a single 5 V power supply. The enable function is common to all four receivers and offers a
choice of active high or active low input. Fail safe design ensures that if the inputs are open, the outputs will always be
high.
Features
• Ordering Information
Part Name Package Type Package Code Package
Abbreviation Taping Abbreviation
(Quantity)
HD26LS32AP DILP-16 pin (JEITA) DP-16E, -16FV P —
Logic Diagram
1A
Enable G
Enable G
1Y
2Y
3Y
4Y
1B
2A
2B
3A
3B
4A
4B
HD26LS32A
Rev.2.00, Jul.16.2004, page 2 of 7
Pin Arrangement
(Top view)
1
2
3
4
5
6
7
1B
GND
1A
1Y
2Y
8
Enable G
2A
2B
13
14
15
10
11
12
9
16 VCC
4B
4A
4Y
Enable G
3Y
3A
3B
Function Table
Differential Input Enable Output
A – B G G
GG
GY
VID ≥ V TH HXH
XL H
VTL < VID < VTH HX?
XL ?
VID ≤ V TL HXL
XL L
XLHZ
H : High level
L : Low level
X : Immaterial
? : Irrelevant
Z : High impedance
Absolute Maximum Ratings
Item Symbol Ratings Unit
Supply Voltage VCC*17.0 V
Input Voltage A or B VIN ±25 V
Differential Input Voltage VID*2±25 V
Enable Input Voltage VIN 7V
Output Sink Current Iout 50 mA
Continuous Total Dissipation PT1W
Operating Temperature Topr 0 to +70 °C
Storage Temperature Tstg –65 to 150 °C
Notes: 1. All voltage values except for differential input voltage are with respect to network ground terminal.
2. Differential input voltage is measured at the noninverting input with respect to the corresponding inverting
input.
3. The absolute maximum ratings are values which must not individually be exceeded, and furthermore, no two
of which may be realized at the same time.
HD26LS32A
Rev.2.00, Jul.16.2004, page 3 of 7
Recommended Operating Conditions
Item Symbol Min Typ Max Unit
Supply Voltage VCC 4.75 5.00 5.25 V
In Phase Input Voltage VIC ——±7.0V
Output Current IOH — — –440 µA
IOL ——8 mA
Operating Temperature Topr 0 — 70 °C
Electrical Characteristics (Ta = 0 to +70°C)
Item Symbol Min Typ*1Max Unit Conditions
Differential Input High
Threshold Voltage
VTH —— 0.2V V
IC = –7 to +7 V VOH = 2.7V, IOH = –440 µA
Differential Input Low VTL — — –0.2 VOL = 0.4 V, IOL = 4 mA
Threshold Voltage — — –0.2 VOL = 0.45 V, IOL = 8 mA
Input Hysteresis*2VTH – VTL —50 — mV
Enable Input Voltage VIH 2.0 — — V
VIL —— 0.8
Enable Input Clamp
Voltage
VIK — — –1.5 VCC = 4.75 V, IIN = –18 mA
Output Voltage VOH 2.7 — — VCC = 4.75 V VID = 1 V, IOH = –440 µA
VOL —— 0.4 V
IL (G) = 0.8 V VID = –1 V, IOL = 4 mA
— — 0.45 VID = –1 V, IOL = 8 mA
Off State (High IOZ —— 20µAV
CC = 5.25 V VO = 2.4 V
Impedance) Output
Current
— — –20 VO = 0.4 V
Line Input Current II —
—
—
—
1.2
–1.7
mA VI = 15 V, Other Inputs –10 to +15 V
VI = –15 V, Other Inputs –15 to +10 V
Enable Input Current II (EN) — — 100 µA VI = 5.5 V
IIH —— 20 V
I = 2.7 V
IIL — — –0.36 mA VI = 0.4 V
Input Resistance ri 12 15 — kΩVIC = –15 to +15 V (Other Inputs AC GND)
Short Circuit Output
Current
IOS*3–15 — –85 mA VCC = 5.25 V
Supply Current ICC —52 70 V
CC = 5.25 V, VI = 0 V (All Outputs Disable)
Notes: 1. All typical values are at VCC = 5 V, Ta = 25°C,VIC = 0.
2. Hysteresis is the differential between the positive going input threshold voltage and the negative going input
threshold voltage.
3. Not more than one output should be shorted at a time.
Switching Characteristics (VCC = 5 V, Ta = 25°C)
Item Symbol Min Typ Max Unit Conditions
Propagation Delay Time tPLH —2035nsC
L = 15 pF
tPHL —2235
Output Enable Time tZH —1722nsC
L = 15 pF
tZL —2025
Output Disable Time tHZ —2130nsC
L = 5 pF
tLZ —3040
HD26LS32A
Rev.2.00, Jul.16.2004, page 4 of 7
1. tPLH, tPHL
Test circuit
Pulse
Generator
Input
CL
Output
Ω2 k
VCC
Ω5 k
2 V
Waveforms
Input A 0 V 0 V
0 V 0 V
tPLH
OH
VOL
V
1.3 V
2.5 V
–2.5 V
2.5 V
–2.5 V
tPHL
1.3 V
Input B
Output
HD26LS32A
Rev.2.00, Jul.16.2004, page 5 of 7
2. tHZ, tZH
Test circuit
Input
2.5 V
2 V
CL
Output Ω2 k
VCC
Ω5 k
S1
Pulse
Generator
Waveforms
Enable G 1.3 V 1.3 V
1.3 V 1.3 V
tZH
OH
V
1.3 V
3 V
0 V
3 V
0 V
tHZ
0.5 V
Output
Enable G
S1 : Open
0 V
1.4 V
S1 : Closed
HD26LS32A
Rev.2.00, Jul.16.2004, page 6 of 7
3. tLZ, tZL
Test circuit
Input
–2.5 V
2 V
CL
Output Ω2 k
VCC
Ω5 k
S2
Pulse
Generator
Waveforms
Enable 1.3 V 1.3 V
1.3 V 1.3 V
tZL
OH
VOL
V
1.3 V
3 V
0 V
3 V
0 V
tLZ
0.5 V
Output
Enable G
S2 : Open S2 : Closed
1.4 V
Notes: 1. The pulse generator has the following characteristics:
PRR = 1 MHz, 50% duty cycle, tr ≤ 6 ns, t f ≤ 6 ns, Zout = 50 Ω.
2. CL includes probe and jig capacitance.
3. All diodes are 1S2074(H).
4. To test G input, ground G input and apply an inverted input waveform.
HD26LS32A
Rev.2.00, Jul.16.2004, page 7 of 7
Package Dimensions
16
18
9
19.2
20.32 Max
6.3
7.4 Max
5.06 Max2.54 Min
0.51 Min
Package Code
JEDEC
JEITA
Mass
(reference value)
DP-16E
Conforms
Conforms
1.05 g
2.54 ± 0.25 0.48 ± 0.1
0.89 1.3 7.62
0.25+ 0.1
– 0.05
0˚ – 15˚
As of January, 2003
Unit: mm
16
18
9
19.2
20.32 Max
6.3
7.4 Max
5.06 Max2.54 Min
0.51 Min
Package Code
JEDEC
JEITA
Mass
(reference value)
DP-16FV
Conforms
Conforms
1.05 g
2.54 ± 0.25
*NI/Pd/AU Plating
*0.48 ± 0.08
0.89 1.3 7.62
*0.25
± 0.06
0˚ – 15˚
Unit: mm
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