INDUSTRIALTEMPERATURERANGE

IDT74FCT157AT/CT/DT

FASTCMOSQUAD2-INPUTMULTIPLEXER

1

JUNE 2006

INDUSTRIAL TEMPERATURE RANGE

The IDT logo is a registered trademark of Integrated Device Technology, Inc.

© 2006 Integrated Device Technology, Inc.

DSC-5502/5

FEATURES:

• A, C, and D grades

• Low input and output leakage

≤≤≤≤≤1µA (max.)

• CMOS power levels

• True TTL input and output compatibility:

• 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

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

enable input is not active, all four outputs are held low. A common application

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

S