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FEATURES
SN74LVC257A . . . RGY PACKAGE
(TOP VIEW)
1 16
8 9
2
3
4
5
6
7
15
14
13
12
11
10
OE
4A
4B
4Y
3A
3B
1A
1B
1Y
2A
2B
2Y
A/B
3Y V
GND
CC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
A/B
1A
1B
1Y
2A
2B
2Y
GND
VCC
OE
4A
4B
4Y
3A
3B
3Y
SN54LVC257A . . . J OR W PACKAGE
SN74LVC257A . . . D, DB, NS,
OR PW PACKAGE
(TOP VIEW)
3 2 1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
4A
4B
NC
4Y
3A
SN54LVC257A . . . FK PACKAGE
(TOP VIEW)
1A
A/B
NC
3Y
3B V
OE
2Y
GND
NC
CC
NC − No internal connection
1B
1Y
NC
2A
2B
DESCRIPTION/ORDERING INFORMATION
SN54LVC257A, SN74LVC257AQUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SCAS294N JANUARY 1993 REVISED JUNE 2005
Typical V
OHV
(Output V
OH
Undershoot)>2 V at V
CC
= 3.3 V, T
A
= 25°COperate From 1.65 V to 3.6 V
Latch-Up Performance Exceeds 250 mA PerInputs Accept Voltages to 5.5 V
JESD 17Max t
pd
of 4.6 ns at 3.3 V
ESD Protection Exceeds JESD 22Typical V
OLP
(Output Ground Bounce)
2000-V Human-Body Model (A114-A)<0.8 V at V
CC
= 3.3 V, T
A
= 25°C
200-V Machine Model (A115-A)
These quadruple 2-line to 1-line data selectors/multiplexers are designed for 1.65-V to 3.6-V V
CC
operation.
The 'LVC257A devices are designed to multiplex signals from 4-bit data sources to 4-output data lines inbus-organized systems. The 3-state outputs do not load the data lines when the output-enable ( OE) input is at ahigh logic level.
ORDERING INFORMATION
T
A
PACKAGE
(1)
ORDERABLE PART NUMBER TOP-SIDE MARKING
QFN RGY Reel of 1000 SN74LVC257ARGYR LC257ATube of 40 SN74LVC257ADSOIC D Reel of 2500 SN74LVC257ADR LVC257AReel of 250 SN74LVC257ADT–40°C to 85°C SOP NS Reel of 2000 SN74LVC257ANSR LVC257ASSOP DB Reel of 2000 SN74LVC257ADBR LC257ATube of 90 SN74LVC257APWTSSOP PW Reel of 2000 SN74LVC257APWR LC257AReel of 250 SN74LVC257APWTCDIP J Tube of 25 SNJ54LVC257AJ SNJ54LVC257AJ–55°C to 125°C CFP W Tube of 150 SNJ54LVC257AW SNJ54LVC257AWLCCC FK Tube of 55 SNJ54LVC257AFK SNJ54LVC257AFK
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available atwww.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of TexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 1993–2005, Texas Instruments IncorporatedProducts conform to specifications per the terms of the Texas
On products compliant to MIL-PRF-38535, all parameters areInstruments standard warranty. Production processing does not
tested unless otherwise noted. On all other products, productionnecessarily include testing of all parameters.
processing does not necessarily include testing of all parameters.
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DESCRIPTION/ORDERING INFORMATION (CONTINUED)
4Y
3Y
2Y
1Y
A/B
OE
4B
4A
3B
3A
2B
2A
1B
1A 4
2
3
7
5
6
9
11
10
12
14
13
1
15
Pin numbers shown are for the D, DB, J, NS, PW, RGY, and W packages.
SN54LVC257A, SN74LVC257AQUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERSWITH 3-STATE OUTPUTS
SCAS294N JANUARY 1993 REVISED JUNE 2005
Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translatorsin a mixed 3.3-V/5-V system environment.
To ensure the high-impedance state during power up or power down, OE should be tied to V
CC
through a pullupresistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
FUNCTION TABLE
INPUTS
OUTPUT
YOE A/B A B
H X X X ZL L L X LL L H X HL H X L LL H X H H
LOGIC DIAGRAM (POSITIVE LOGIC)
2
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Absolute Maximum Ratings
(1)
Recommended Operating Conditions
(1)
SN54LVC257A, SN74LVC257AQUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SCAS294N JANUARY 1993 REVISED JUNE 2005
over operating free-air temperature range (unless otherwise noted)
MIN MAX UNIT
V
CC
Supply voltage range –0.5 6.5 VV
I
Input voltage range
(2)
–0.5 6.5 VV
O
Output voltage range
(2) (3)
–0.5 V
CC
+ 0.5 VI
IK
Input clamp current V
I
< 0 –50 mAI
OK
Output clamp current V
O
< 0 –50 mAI
O
Continuous output current ±50 mAContinuous current through V
CC
or GND ±100 mAD package
(4)
73DB package
(4)
82θ
JA
Package thermal impedance NS package
(4)
64 °C/WPW package
(4)
108RGY package
(5)
39T
stg
Storage temperature range –65 150 °C
(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratingsonly, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operatingconditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.(2) The input negative-voltage and output voltage ratings may be exceeded if the input and output current ratings are observed.(3) The value of V
CC
is provided in the recommended operating conditions table.(4) The package thermal impedance is calculated in accordance with JESD 51-7.(5) The package thermal impedance is calculated in accordance with JESD 51-5.
SN54LVC257A SN74LVC257A
UNITMIN MAX MIN MAX
Operating 2 3.6 1.65 3.6V
CC
Supply voltage VData retention only 1.5 1.5V
CC
= 1.65 V to 1.95 V 0.65 × V
CC
V
IH
High-level input voltage V
CC
= 2.3 V to 2.7 V 1.7 VV
CC
= 2.7 V to 3.6 V 2 2V
CC
= 1.65 V to 1.95 V 0.35 × V
CC
V
IL
Low-level input voltage V
CC
= 2.3 V to 2.7 V 0.7 VV
CC
= 2.7 V to 3.6 V 0.8 0.8V
I
Input voltage 0 5.5 0 5.5 VV
O
Output voltage 0 V
CC
0 V
CC
VV
CC
= 1.65 V –4V
CC
= 2.3 V –8I
OH
High-level output current mAV
CC
= 2.7 V –12 –12V
CC
= 3 V –24 –24V
CC
= 1.65 V 4V
CC
= 2.3 V 8I
OL
Low-level output current mAV
CC
= 2.7 V 12 12V
CC
= 3 V 24 24t/ v Input transition rise or fall rate 10 10 ns/VT
A
Operating free-air temperature –55 125 –40 85 °C
(1) All unused inputs of the device must be held at V
CC
or GND to ensure proper device operation. Refer to the TI application report,Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
3
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Electrical Characteristics
Switching Characteristics
Switching Characteristics
SN54LVC257A, SN74LVC257AQUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERSWITH 3-STATE OUTPUTS
SCAS294N JANUARY 1993 REVISED JUNE 2005
over recommended operating free-air temperature range (unless otherwise noted)
SN54LVC257A SN74LVC257APARAMETER TEST CONDITIONS V
CC
UNITMIN TYP
(1)
MAX MIN TYP
(1)
MAX
I
OH
= –100 µA 1.65 V to 3.6 V V
CC
0.2I
OH
= –100 µA 2.7 V to 3.6 V V
CC
0.2I
OH
= –4 mA 1.65 V 1.2V
OH
I
OH
= –8 mA 2.3 V 1.7 V2.7 V 2.2 2.2I
OH
= –12 mA
3 V 2.4 2.4I
OH
= –24 mA 3 V 2.2 2.21.65 V to 3.6 V 0.2I
OL
= 100 µA
2.7 V to 3.6 V 0.2I
OL
= 4 mA 1.65 V 0.45V
OL
VI
OL
= 8 mA 2.3 V 0.7I
OL
= 12 mA 2.7 V 0.4 0.4I
OL
= 24 mA 3 V 0.55 0.55I
I
V
I
= 5.5 V or GND 3.6 V ±5 ±5 µAI
OZ
V
O
= V
CC
or GND 3.6 V ±15 ±10 µAI
CC
V
I
= V
CC
or GND, I
O
= 0 3.6 V 10 10 µAOne input at V
CC
0.6 V,I
CC
2.7 V to 3.6 V 500 500 µAOther inputs at V
CC
or GNDC
i
V
I
= V
CC
or GND 3.3 V 5 5 pFC
o
V
O
= V
CC
or GND 3.3 V 5 5 pF
(1) All typical values are at V
CC
= 3.3 V, T
A
= 25°C.
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1 )
SN54LVC257A
FROM TO V
CC
= 3.3 VPARAMETER V
CC
= 2.7 V UNIT(INPUT) (OUTPUT) ± 0.3 V
MIN MAX MIN MAX
A or B 5.4 1 4.6t
pd
Y nsA/B 7.5 1 6.4t
en
OE Y 6.7 1 5.6 nst
dis
OE Y 4.7 0.5 4.3 nst
sk(o)
1 ns
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1 )
SN74LVC257A
FROM TO V
CC
= 1.8 V V
CC
= 2.5 V V
CC
= 3.3 VPARAMETER V
CC
= 2.7 V UNIT(INPUT) (OUTPUT) ± 0.15 V ± 0.2 V ± 0.3 V
MIN MAX MIN MAX MIN MAX MIN MAX
A or B 1 13.5 1 7.4 1 5.4 1 4.6t
pd
Y nsA/B 1 15.6 1 9.5 1 7.5 1 6.4t
en
OE Y 1 14.6 1 8.7 1 6.7 1 5.6 nst
dis
OE Y 1 15.4 1 6.7 1 4.7 1 4.3 nst
sk(o)
1 ns
4
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Operating Characteristics
SN54LVC257A, SN74LVC257AQUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SCAS294N JANUARY 1993 REVISED JUNE 2005
T
A
= 25°C
V
CC
= 1.8 V V
CC
= 2.5 V V
CC
= 3.3 VPARAMETER TEST CONDITIONS UNITTYP TYP TYP
C
pd
Power dissipation capacitance f = 10 MHz 13.5 14.5 15.5 pF
5
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PARAMETER MEASUREMENT INFORMATION
VM
th
tsu
From Output
Under Test
CL
(see Note A)
LOAD CIRCUIT
S1 VLOAD
Open
GND
RL
RL
Data Input
Timing Input VI
0 V
VI
0 V
0 V
tw
Input
VOLTAGE W AVEFORMS
SETUP AND HOLD TIMES
VOLTAGE W AVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
VOLTAGE W AVEFORMS
PULSE DURATION
tPLH
tPHL
tPHL
tPLH
VOH
VOH
VOL
VOL
VI
0 V
Input
Output
Waveform 1
S1 at VLOAD
(see Note B)
Output
Waveform 2
S1 at GND
(see Note B)
VOL
VOH
tPZL
tPZH
tPLZ
tPHZ
VLOAD/2
0 V
VOL + V
VOH − V0 V
VI
VOLTAGE W AVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
Output
Output
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
Open
VLOAD
GND
TEST S1
NOTES: A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low, except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR 10 MHz, ZO = 50 .
D. The outputs are measured one at a time, with one transition per measurement.
E. tPLZ and tPHZ are the same as tdis.
F. tPZL and tPZH are the same as ten.
G. tPLH and tPHL are the same as tpd.
H. All parameters and waveforms are not applicable to all devices.
Output
Control
VMVM
VMVM
VMVM
VM
VMVM
VM
VM
VM
VI
VM
VM
1.8 V ± 0.15 V
2.5 V ± 0.2 V
2.7 V
3.3 V ± 0.3 V
1 k
500
500
500
VCC RL
2 × VCC
2 × VCC
6 V
6 V
VLOAD CL
30 pF
30 pF
50 pF
50 pF
0.15 V
0.15 V
0.3 V
0.3 V
V
VCC
VCC
2.7 V
2.7 V
VI
VCC/2
VCC/2
1.5 V
1.5 V
VM
tr/tf
2 ns
2 ns
2.5 ns
2.5 ns
INPUTS
SN54LVC257A, SN74LVC257AQUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERSWITH 3-STATE OUTPUTS
SCAS294N JANUARY 1993 REVISED JUNE 2005
Figure 1. Load Circuit and Voltage Waveforms
6
PACKAGE OPTION ADDENDUM
www.ti.com 5-Sep-2011
Addendum-Page 1
PACKAGING INFORMATION
Orderable Device Status (1) Package Type Package
Drawing Pins Package Qty Eco Plan (2) Lead/
Ball Finish MSL Peak Temp (3) Samples
(Requires Login)
5962-0050901Q2A ACTIVE LCCC FK 20 1 TBD Call TI Call TI
5962-0050901QEA ACTIVE CDIP J 16 1 TBD Call TI Call TI
5962-0050901QFA ACTIVE CFP W 16 1 TBD Call TI Call TI
SN74LVC257AD ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LVC257ADBLE OBSOLETE SSOP DB 16 TBD Call TI Call TI
SN74LVC257ADBR ACTIVE SSOP DB 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LVC257ADBRE4 ACTIVE SSOP DB 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LVC257ADBRG4 ACTIVE SSOP DB 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LVC257ADE4 ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LVC257ADG4 ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LVC257ADR ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LVC257ADRE4 ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LVC257ADRG4 ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LVC257ADT ACTIVE SOIC D 16 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LVC257ADTE4 ACTIVE SOIC D 16 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LVC257ADTG4 ACTIVE SOIC D 16 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LVC257ANSR ACTIVE SO NS 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LVC257ANSRE4 ACTIVE SO NS 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
PACKAGE OPTION ADDENDUM
www.ti.com 5-Sep-2011
Addendum-Page 2
Orderable Device Status (1) Package Type Package
Drawing Pins Package Qty Eco Plan (2) Lead/
Ball Finish MSL Peak Temp (3) Samples
(Requires Login)
SN74LVC257ANSRG4 ACTIVE SO NS 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LVC257APW ACTIVE TSSOP PW 16 90 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LVC257APWE4 ACTIVE TSSOP PW 16 90 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LVC257APWG4 ACTIVE TSSOP PW 16 90 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LVC257APWLE OBSOLETE TSSOP PW 16 TBD Call TI Call TI
SN74LVC257APWR ACTIVE TSSOP PW 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LVC257APWRE4 ACTIVE TSSOP PW 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LVC257APWRG3 PREVIEW TSSOP PW 16 2000 TBD Call TI Call TI
SN74LVC257APWRG4 ACTIVE TSSOP PW 16 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LVC257APWT ACTIVE TSSOP PW 16 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LVC257APWTE4 ACTIVE TSSOP PW 16 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LVC257APWTG4 ACTIVE TSSOP PW 16 250 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74LVC257ARGYR ACTIVE VQFN RGY 16 3000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
SN74LVC257ARGYRG4 ACTIVE VQFN RGY 16 3000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
SNJ54LVC257AFK ACTIVE LCCC FK 20 1 TBD POST-PLATE N / A for Pkg Type
SNJ54LVC257AJ ACTIVE CDIP J 16 1 TBD A42 N / A for Pkg Type
SNJ54LVC257AW ACTIVE CFP W 16 1 TBD A42 N / A for Pkg Type
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
PACKAGE OPTION ADDENDUM
www.ti.com 5-Sep-2011
Addendum-Page 3
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability
information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
OTHER QUALIFIED VERSIONS OF SN54LVC257A, SN74LVC257A :
Catalog: SN74LVC257A
Automotive: SN74LVC257A-Q1, SN74LVC257A-Q1
Enhanced Product: SN74LVC257A-EP, SN74LVC257A-EP
Military: SN54LVC257A
NOTE: Qualified Version Definitions:
Catalog - TI's standard catalog product
Automotive - Q100 devices qualified for high-reliability automotive applications targeting zero defects
Enhanced Product - Supports Defense, Aerospace and Medical Applications
Military - QML certified for Military and Defense Applications
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device Package
Type Package
Drawing Pins SPQ Reel
Diameter
(mm)
Reel
Width
W1 (mm)
A0
(mm) B0
(mm) K0
(mm) P1
(mm) W
(mm) Pin1
Quadrant
SN74LVC257ADBR SSOP DB 16 2000 330.0 16.4 8.2 6.6 2.5 12.0 16.0 Q1
SN74LVC257ADR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1
SN74LVC257ANSR SO NS 16 2000 330.0 16.4 8.2 10.5 2.5 12.0 16.0 Q1
SN74LVC257APWR TSSOP PW 16 2000 330.0 12.4 7.0 5.6 1.6 8.0 12.0 Q1
SN74LVC257APWR TSSOP PW 16 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.0 Q1
SN74LVC257APWRG4 TSSOP PW 16 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.0 Q1
SN74LVC257APWT TSSOP PW 16 250 330.0 12.4 6.9 5.6 1.6 8.0 12.0 Q1
SN74LVC257ARGYR VQFN RGY 16 3000 330.0 12.4 3.8 4.3 1.5 8.0 12.0 Q1
PACKAGE MATERIALS INFORMATION
www.ti.com 14-Jul-2012
Pack Materials-Page 1
*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
SN74LVC257ADBR SSOP DB 16 2000 367.0 367.0 38.0
SN74LVC257ADR SOIC D 16 2500 333.2 345.9 28.6
SN74LVC257ANSR SO NS 16 2000 367.0 367.0 38.0
SN74LVC257APWR TSSOP PW 16 2000 364.0 364.0 27.0
SN74LVC257APWR TSSOP PW 16 2000 367.0 367.0 35.0
SN74LVC257APWRG4 TSSOP PW 16 2000 367.0 367.0 35.0
SN74LVC257APWT TSSOP PW 16 250 367.0 367.0 35.0
SN74LVC257ARGYR VQFN RGY 16 3000 367.0 367.0 35.0
PACKAGE MATERIALS INFORMATION
www.ti.com 14-Jul-2012
Pack Materials-Page 2
MECHANICAL DATA
MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE
4040065 /E 12/01
28 PINS SHOWN
Gage Plane
8,20
7,40
0,55
0,95
0,25
38
12,90
12,30
28
10,50
24
8,50
Seating Plane
9,907,90
30
10,50
9,90
0,38
5,60
5,00
15
0,22
14
A
28
1
2016
6,50
6,50
14
0,05 MIN
5,905,90
DIM
A MAX
A MIN
PINS **
2,00 MAX
6,90
7,50
0,65 M
0,15
0°ā8°
0,10
0,09
0,25
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.
D. Falls within JEDEC MO-150
IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other
changes to its semiconductor products and services per JESD46C and to discontinue any product or service per JESD48B. Buyers should
obtain the latest relevant information before placing orders and should verify that such information is current and complete. All
semiconductor products (also referred to herein as “components”) are sold subject to TI’s terms and conditions of sale supplied at the time
of order acknowledgment.
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