SN74LVC257A-EP Datasheet, PDF (1/12 Pages) Texas Instruments – QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER WITH 3-STATE OUTPUTS

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SN74LVC257A-EP
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER
WITH 3-STATE OUTPUTS
SCAS736B – NOVEMBER 2005 – REVISED JANUARY 2007
FEATURES
• Controlled Baseline
– One Assembly/Test Site, One Fabrication
Site
• Extended Temperature Performance of –55°C
to 125°C
• Enhanced Diminishing Manufacturing Sources
(DMS) Support
• Enhanced Product-Change Notification
• Qualification Pedigree ⁽¹⁾
• ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
(1) Component qualification in accordance with JEDEC and
industry standards to ensure reliable operation over an
extended temperature range. This includes, but is not limited
to, Highly Accelerated Stress Test (HAST) or biased 85/85,
temperature cycle, autoclave or unbiased HAST,
electromigration, bond intermetallic life, and mold compound
life. Such qualification testing should not be viewed as
justifying use of this component beyond specified
performance and environmental limits.
• Operates From 2 V to 3.6 V
• Inputs Accept Voltages to 5.5 V
• Max t_pd of 4.6 ns at 3.3 V
• Typical V_OLP (Output Ground Bounce) <0.8 V
at V_CC = 3.3 V, T_A = 25°C
• Typical V_OHV (Output V_OH Undershoot) >2 V at
V_CC = 3.3 V, T_A = 25°C
D OR PW PACKAGE
(TOP VIEW)
A/B 1
1A 2
1B 3
1Y 4
2A 5
2B 6
2Y 7
GND 8
16 VCC
15 OE
14 4A
13 4B
12 4Y
11 3A
10 3B
9 3Y
DESCRIPTION/ORDERING INFORMATION
The SN74LVC257A-EP quadruple 2-line to 1-line data selector/multiplexer is designed for 2.7-V to 3.6-V V_CC
operation.
The device is designed to multiplex signals from 4-bit data sources to 4-output data lines in bus-organized
systems. The 3-state outputs do not load the data lines when the output-enable (OE) input is at a high logic
level.
Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of this device as a translator in
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 pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
T_A
–40°C to 125°C
–55°C to 125°C
ORDERING INFORMATION
PACKAGE ⁽¹⁾
ORDERABLE PART NUMBER
SOIC – D
Reel of 2500
SN74LVC257AQDREP
TSSOP – PW
SOIC – D
Reel of 2000
Reel of 2500
SN74LVC257AQPWREP
SN74LVC257AMDREP ⁽²⁾
TSSOP – PW
Reel of 2000
SN74LVC257AMPWREP
TOP-SIDE MARKING
C257AEP
C257AEP
C257AME
C257AME
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
(2) Product Preview
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2005–2007, Texas Instruments Incorporated