SN54LVC257A_15 Datasheet, PDF (1/30 Pages) Texas Instruments – Quadruple 2-Line to 1-Line Data Selectors

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SN54LVC257A, SN74LVC257A
SCAS294O – JANUARY 1993 – REVISED JUNE 2015
SNx4LVC257A Quadruple 2-Line to 1-Line Data Selectors and
Multiplexers With 3-State Outputs
1 Features
•1 Operate From 1.65 V to 3.6 V
• Inputs Accept Voltages to 5.5 V
• Maximum 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
• Latch-Up Performance Exceeds 250 mA Per
JESD 17
• ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
• On Products Compliant to MIL-PRF-38535, All
Parameters Are Tested Unless Otherwise Noted.
On All Other Products, Production Processing
Does Not Necessarily Include Testing of All
Parameters.
2 Applications
• Cable Modem Termination Systems
• Tests and Measurements
• I/O Expanders
• Motor Drivers
• Network Switches
• Servers
• Telecom Infrastructure
3 Description
These quadruple 2-line to 1-line data selectors and
multiplexers are designed for 1.65-V to 3.6-V V_CC
operation.
The SNx4LVC257A devices are 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 these devices as
translators in a mixed 3.3-V or 5-V system
environment.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
VQFN (16)
3.50 mm × 4.00 mm
SOIC (16)
9.90 mm × 3.91 mm
SN74LVC257A
SO (16)
10.30 mm × 5.30 mm
SSOP (16)
5.50 mm × 6.20 mm
TSSOP (16)
4.40 mm × 5.00 mm
CDIP (16)
6.92 mm × 21.34 mm
SN54LVC257A
CFP (16)
10.30 mm × 6.73 mm
LCCC (20)
8.89 mm × 8.89 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Logic Diagram (Positive Logic)
15
OE
1
A/B
2
1A
1B ³
4
1Y
5
2A
6
2B
7
2Y
11
3A
10
3B
9
3Y
14
4A
13
4B
Pin numbers shown are for the D, DB, J, NS, PW , RGY , and W packages.
12
4Y
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.