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

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

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

3 Description

These quadruple 2-line to 1-line data selectors and

1

•

Operate From 1.65 V to 3.6 V

•

Inputs Accept Voltages to 5.5 V

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.

•

Latch-Up Performance Exceeds 250 mA Per

Inputs can be driven from either 3.3-V or 5-V devices.

JESD 17

This feature allows the use of these devices as

translators in a mixed 3.3-V or 5-V system

•

ESD Protection Exceeds JESD 22

environment.

–

2000-V Human-Body Model (A114-A)

–

200-V Machine Model (A115-A)

Device Information(1)

•

On Products Compliant to MIL-PRF-38535, All

PART NUMBER

PACKAGE

BODY SIZE (NOM)

Parameters Are Tested Unless Otherwise Noted.

VQFN (16)

3.50 mm × 4.00 mm

On All Other Products, Production Processing

SOIC (16)

9.90 mm × 3.91 mm

Does Not Necessarily Include Testing of All

SN74LVC257A

SO (16)

10.30 mm × 5.30 mm

Parameters.

SSOP (16)

5.50 mm × 6.20 mm

TSSOP (16)

4.40 mm × 5.00 mm

2 Applications

CDIP (16)

6.92 mm × 21.34 mm

•

Cable Modem Termination Systems

SN54LVC257A

CFP (16)

10.30 mm × 6.73 mm

•

Tests and Measurements

LCCC (20)

8.89 mm × 8.89 mm

•

I/O Expanders

(1) For all available packages, see the orderable addendum at

•

Motor Drivers

the end of the data sheet.

•

Network Switches

•

Servers

•

Telecom Infrastructure

Logic Diagram (Positive Logic)

Pin numbers shown are for the D, DB, J, NS, PW , RGY , and W packages.

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.