© 2002 Fairchild Semiconductor Corporation

DS500404

www.fairchildsemi.com

April 2001

Revised July 2002

FST32211

40/48-Bit Bus Switch

General Description

The Fairchild Switch FST32211 provides up to 48-bits of

high-speed CMOS TTL-compatible bus switching. The low

On Resistance of the switch allows inputs to be connected

to outputs without adding propagation delay or generating

additional ground bounce noise.

The device can be organized as four 12-bit, two 24-bit, or

one 48-bit bus switch. When routed as a 40-bit bus switch,

the device can be organized as four 10-bit, two 20-bit or

the switch is ON and Port 2A is connected to Port 2B.

A and B Ports.

Features

I 4

Ω switch connection between two ports

I Minimal propagation delay through the switch

I Zero bounce in flow-through mode

I Control inputs compatible with TTL level

I Packaged in plastic Fine Pitch Ball Grid Array (FBGA)

Ordering Code:

Note 1: Ordering code “G” indicates Trays.

Note 2: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Logic Diagram

Order Number

Package Number

Package Description

FST32211G

(Note 1)(Note 2)

BGA114A

114-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide