FST33X257 Datasheet, PDF (1/5 Pages) Fairchild Semiconductor – 24:12 Multiplexer/Demultiplexer Bus Switch

May 2002
Revised July 2002
FST33X257
24:12 Multiplexer/Demultiplexer Bus Switch
General Description
The Fairchild Switch FST33X257 is a 24:12 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 propagation
delay or generating additional ground bounce noise.
When OE_x is LOW, the select pin connects the A Port to
the selected B Port output. When OE_x is HIGH, the switch
is OPEN and a high-impedance state exists between the
two ports.
Features
s 4Ω 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
Ordering Code:
Order Number
Package
Number
Package Description
FST33X257QSP MQA48A 48-Lead Quarter Size Very Small Outline Package (QVSOP), JEDEC MO-154, 0.150" Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
© 2002 Fairchild Semiconductor Corporation DS500724
www.fairchildsemi.com