FST16292 12-Bit to 24-Bit Multiplexer/Demultiplexer Bus Switch
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
output. The A
2
Ports are not externally connected, thus
have a 500鈩?pull-down resistor to ground.
Features
s
4鈩?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
Internal 500鈩?pull-down resistor on A
2
port.
Ordering Code:
Order Number
FST16292MEA
FST16292MTD
Package Number
MS56A
MTD56
Package Description
56-Lead Shrink Small Outline Package (SSOP), JEDEC MO-118, 0.300 Wide
56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm 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
SO
A
1
B
1
, B
2
Description
Data-select input
Bus A
Bus B
Truth Table
S0
L
H
A
1
B
1
B
2
A
2
B
2
B
1
Function
A
1
=
B
1
, A
2
=
B
2
A
1
=
B
2
, A
2
=
B
1
漏 1999 Fairchild Semiconductor Corporation
DS500104
www.fairchildsemi.com
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