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© 2002 Fairchild Semiconductor Corporation DS500325 www.fairchildsemi.com
January 2000
Revised April 2002
NC7SB3257 TinyLogic
UHS 2:1 Multiplexer/Demultiplexer Bus Switch
NC7SB3257
TinyLogic
UHS
2:1 Multiplexer/Demultiplexer Bus Switch
General Description
The NC7SB3257 is a high performance, 2:1 NMOS pass-
gate multiplexer/demultiplexer from Fairchild’s Ultra High
Speed Series of TinyLogic
. The device is fabricated with
advanced sub-micron CMOS technology to achieve high
speed enable and disable times and low On Resistance.
The device is specified to operate over the 4.0 to 5.5V V
CC
operating range. The control input tolerates voltages up to
5.5V independent of the V
CC
operating range.
Features
■ Space saving SC70 6-lead surface mount package
■ Ultra small MicroPak
leadless package
■ Typical 3
Ω switch resistance @ 5.0V V
CC
■ Minimal propagation delay through the switch
■ Power down high impedance control input
■ Zero bounce in flow through mode
■ TTL compatible control input
■ Overvoltage tolerance of control input to 7.0V
■ Break before make enable circuitry
Ordering Code:
TinyLogic and MicroPak are trademarks of Fairchild Semiconductor Corporation.
Order
Number
Package
Number
Product Code
Top Mark
Package Description Supplied As
NC7SB3257P6X MAA06A B7B 6-Lead SC70, EIAJ SC88, 1.25mm Wide 3k Units on Tape and Reel
NC7SB3257L6X MAC06A B7 6-Lead MicroPak, 1.0mm Wide 5k Units on Tape and Reel