© 1999 Fairchild Semiconductor Corporation

DS500104

www.fairchildsemi.com

July 1997

Revised December 1999

FST16292

12-Bit to 24-Bit Multiplexer/Demultiplexer Bus Switch

General Description

The Fairchild Switch FST16292 provides twelve 2:1 high-

speed CMOS TTL-compatible multiplexer/demultiplexer

bus switches. The low on resistance of the switch allows

inputs to be connected to outputs without adding propaga-

tion delay or generating additional ground bounce noise.

The select pin connects the A Port to the selected B Port

have a 500

Ω pull-down resistor to ground.

Features

s 4

Ω switch connection between two ports.

s Minimal propagation delay through the switch.

s Zero bounce in flow-through mode.

s Control inputs compatible with TTL level.

s Internal 500

Ω pull-down resistor on A

Ordering Code:

Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Logic Diagram

Pin Descriptions

Connection Diagram

Truth Table

Order Number

Package Number

Package Description

FST16292MEA

MS56A

56-Lead Shrink Small Outline Package (SSOP), JEDEC MO-118, 0.300 Wide

FST16292MTD

MTD56

56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide

Pin Name

Description

SO

Data-select input

Bus A

Bus B

S0

Function