參數資料
型號: FST3384A
文件頁數: 150/178頁
文件大小: 3973K
代理商: FST3384A
1999 Fairchild Semiconductor Corporation
DS500258
www.fairchildsemi.com
June 1999
Revised November 1999
F
FSTU32160A
16-Bit to 32-Bit
Multiplexer/Demultiplexer Bus Switch with
2V Undershoot Hardened Circuit (UHC
) Protection
General Description
The Fairchild Switch FSTU32160A is a 16-bit to 32-bit
high-speed CMOS TTL-compatible multiplexer/demulti-
plexer bus switch. 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 used in applications where two buses
need to be addressed simultaneously. The FSTU32160A is
designed so that the A Port demultiplexes into B
1
or B
2
or
both. The A and B Ports are “undershoot hardened” with
UHC
protection to support an extended range to 2.0V
below ground. Fairchild’s integrated Undershoot Hardened
Circuit, UHC senses undershoot at the I/O’s, and responds
by preventing voltage differentials from developing and
turning on the switch.
Two select (SEL
1
, SEL
2
) inputs provide switch enable con-
trol. When SEL
1
, SEL
2
are HIGH, the device precharges
the B Port to a selectable bias voltage (Bias V) to minimize
live insertion noise.
Features
I
Undershoot hardened to
2V (A and B Ports).
I
4
switch connection between two ports.
I
Minimal propagation delay through the switch.
I
Low l
CC
.
I
Zero bounce in flow-through mode.
I
Control inputs compatible with TTL level.
I
See Applications Note AN-5008 for details
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
UHC
is a trademark of Fairchild Semiconductor Corporation.
Order Number
FSTU32160AMTD
Package Number
MTD56
Package Description
56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
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