FST32X245 16-Bit Bus Switch
June 2002
Revised October 2002
FST32X245
16-Bit Bus Switch
General Description
The Fairchild Switch FST32X245 provides 16-bits of high
speed CMOS TTL-compatible bus switching in a standard
flow-through mode. 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 is organized as a 16-bit switch. When OE is
LOW, the switch is ON and Port A is connected to Port B.
When OE is HIGH, the switch is OPEN and a high-imped-
ance state exists between the two ports.
Features
s
4
鈩?/div>
switch connection between two ports
s
Minimal propagation delay through the switch
s
Low l
CC
s
Zero bounce in flow-through mode
s
Control inputs compatible with TTL level
s
16-bit version of FST3245
Ordering Code:
Order Number
FST32X245QSP
Package
Number
MQA40A
Package Description
40-Lead Quarter Size Very Small Outline Package (QVSOP), JEDEC MO-154, 0.150" Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter 鈥淴鈥?to the ordering code.
Logic Diagram
Connection Diagram
Pin Descriptions
Pin Name
OE
n
A
n
B
n
NC
Description
Bus Switch Enable
Bus A
Bus B
No Connect
Input OE
n
L
H
Function
Connect
Disconnect
Function Table
漏 2002 Fairchild Semiconductor Corporation
DS500620
www.fairchildsemi.com
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