INDUSTRIALTEMPERATURERANGE

IDT74FCT157AT/CT/DT

FASTCMOSQUAD2-INPUTMULTIPLEXER

1

AUGUST 2009

INDUSTRIAL TEMPERATURE RANGE

© 2009 Integrated Device Technology, Inc.

DSC-5502/6

FEATURES:

• A, C, and D grades

• Low input and output leakage

≤≤≤≤≤1µA (max.)

• CMOS power levels

• True TTL input and output compatibility:

–VOH = 3.3V (typ.)

–VOL = 0.3V (typ.)

• High Drive outputs (-15mA IOH, 48mA IOL)

• Meets or exceeds JEDEC standard 18 specifications

• Power off disable outputs permit "live insertion"

• Available in SOIC and QSOP packages

FUNCTIONAL BLOCK DIAGRAM

IDT74FCT157AT/CT/DT

OBSOLETE PART

FAST CMOS

QUAD 2-INPUT

MULTIPLEXER

DESCRIPTION:

The FCT157T is a high-speed quad 2-input multiplexer built using an

advanced dual metal CMOS technology. Four bits of data from two sources

can be selected using the common select input. The four buffered outputs

present the selected data in the true (non-inverting) form.

The FCT157T has a common, active-low, enable input. When the

enableinputisnotactive,allfouroutputsareheldlow. Acommonapplication

of FCT157T is to move data from two different groups of registers to a

common bus. Another application is as a function generator. The FCT157T

can generate any four of the 16 different functions of two variables with one

variable common.

E

Three other multiplexers

Z A

Z B ZD

S

I1B I1D

I0B I0D

I1A

I0A

OBSOLETE

P

ART

NOT

RECOMMENDED

FOR

NEW

DESIGNS