74LCX157 datasheet(1/17 Pages) STMICROELECTRONICS

Part #	74LCX157

Description	Low voltage CMOS Quad 2 channel multiplexer with 5V tolerant inputs

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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February 2007

Rev 6

1/17

17

74LCX157

Low voltage CMOS Quad 2 channel multiplexer

with 5V tolerant inputs

Features

■ 5V tolerant inputs

■ High speed:

–tPD = 6.0ns (Max) at VCC = 3V

■ Power down protection on inputs and outputs

■ Symmetrical output impedance:

–|IOH| = IOL = 24mA (Min) at VCC = 3V

■ PCI bus levels guaranteed at 24mA

■ Balanced propagation delays:

–tPLH ≅ tPHL

■ Operating voltage range:

–VCC (Opr) = 2.0V to 3.6V

■ Pin and function compatible with

74 series 157

■ Latch-up performance exceeds

500mA (JESD 17)

■ ESD performance:

– HBM > 2000V

(MIL STD 883 method 3015); MM > 200V

Description

The 74LCX157 is a low voltage CMOS Quad 2

channel multiplexer fabricated with sub-micron

silicon gate and double-layer metal wiring C2MOS

technology. It is ideal for low power and high

speed 3.3V applications; it can be interfaced to

5V signal environment for inputs.

It consists of four 2-input digital multiplexer with

common select and strobe inputs. It is a non-

inverting multiplexer. When the STROBE input is

held high selection of data is inhibited and all the

outputs become low. The SELECT decoding

determines whether the A or B inputs get routed

to their corresponding Y outputs.

It has same speed performance at 3.3V than 5V

AC/ACT family, combined with a lower power

consumption.

All inputs and outputs are equipped with

protection circuits against static discharge, giving

them 2KV ESD immunity and transient excess

voltage.

SO-16

TSSOP16

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Order codes

Part number

Package

Packaging

74LCX157MTR

SO-16

Tape and reel

74LCX157TTR

TSSOP16

Tape and reel

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