鈭?/div>
2V Undershoot Protection
General Description
The Fairchild Switch FSTU32160 is a 16-bit to 32-bit high-
speed CMOS TTL-compatible multiplexer/demultiplexer
bus switch. 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 device can be used in applications where two buses
need to be addressed simultaneously. The FSTU32160 is
designed so that the A Port demultiplexes into B
1
or B
2
or
both. The A and B Ports have 鈥渦ndershoot hardened鈥?cir-
cuit protection to support an extended range to 2.0V below
ground. Fairchild鈥檚 integrated Undershoot Hardened Circuit
(UHC
錚?/div>
) senses undershoot at the I/O鈥檚, and responds by
preventing voltage differentials from developing and turn-
ing on the switch.
Two select (S
1
, S
2
) inputs provide switch enable control.
When S
1
, S
2
are HIGH, the device precharges the B Port
to a selectable bias voltage (Bias V) to minimize live inser-
tion noise.
Features
s
Undershoot hardened to
鈭?/div>
2V (A and B Ports).
s
Slower Output Enable times prevent signal disruption
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
See Applications Note AN-5008 for details
Ordering Code:
Order Number
FSTU32160MTD
Package Number
MTD56
Package Description
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.
UHC錚?is a trademark of Fairchild Semiconductor Corporation.
漏 2000 Fairchild Semiconductor Corporation
DS500244
www.fairchildsemi.com
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