IDT74FCT257AT/CT/DT
FAST CMOS QUAD 2-INPUT MULTIPLEXER
INDUSTRIAL TEMPERATURE RANGE
FAST CMOS
QUAD 2-INPUT
MULTIPLEXER
IDT74FCT257AT/CT/DT
FEATURES:
DESCRIPTION:
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The FCT257T is a high-speed quad 2-input multiplexer built using an
advanced dual metal CMOS technology. Four bits of data from two sources
can be selected using the common select input. The four buffered outputs
present the selected data in the true (non-inverting) form.
The FCT257T has a common Output Enable (OE) input. When OE is
high, all outputs are switched to a high-impedance state allowing the outputs
to interface directly with bus-oriented systems.
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A, C, and D grades
Low input and output leakage ≤1µA (max.)
CMOS power levels
True TTL input and output compatibility:
– VOH = 3.3V (typ.)
– VOL = 0.3V (typ.)
High Drive outputs (-15mA IOH, 48mA IOL)
Meets or exceeds JEDEC standard 18 specifications
Power off disable outputs permit "live insertion"
Available in SOIC and QSOP packages
FUNCTIONAL BLOCK DIAGRAM
S
Three other multiplexers
I 1B
I1D
I 0B
I0D
ZB ZD
I 1A
ZA
I 0A
OE
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
OCTOBER 2008
1
© 2006 Integrated Device Technology, Inc.
DSC-5500/5
