74LCX157T(1999) 데이터 시트보기 (PDF) - STMicroelectronics

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74LCX157T
(Rev.:1999)

LOW VOLTAGE CMOS QUAD 2 CHANNEL MULTIPLEXER WITH 5V TOLERANT INPUTS

STMicroelectronics 

®

74LCX157

LOW VOLTAGE CMOS QUAD 2 CHANNEL

MULTIPLEXER WITH 5V TOLERANT INPUTS

s 5V TOLERANT INPUTS

s HIGH SPEED:

tPD = 5.2 ns (MAX.) at VCC = 3V

s POWER-DOWN PROTECTION ON INPUTS

AND OUTPUTS

s SYMMETRICAL OUTPUT IMPEDANCE:

|IOH| = IOL = 24 mA (MIN)

s PCI BUS LEVELS GUARANTEED AT 24mA

s BALANCED PROPAGATION DELAYS:

tPLH ≅ tPHL

s OPERATING VOLTAGE RANGE:

VCC (OPR) = 2.0V to 3.6V (1.5V Data Retention)

s PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 157

s LATCH-UP PERFORMANCE EXCEEDS 500mA

s ESD PERFORMANCE:

HBM >2000V; MM > 200V

DESCRIPTION

The 74LCX157 is an high-speed 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 multiplexers with

PRELIMINARY DATA

M1

(Micro Package)

T

(TSSOP Package)

ORDER CODES :

74LCX157M

74LCX157T

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.

PIN CONNECTION AND IEC LOGIC SYMBOLS

February 1999

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