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TC7MB3257FT
General-purpose bus switch
TC7MB3257FT/FK TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC7MB3257FT, TC7MB3257FK Quad 1-of-2 Multiplexer/Demultiplexer
The TC7MB3257 is high-speed CMOS quad 1-2
multiplexer/demultiplexer. The low on resistance of the switch
allows connections to be made with minimal propagation delay
time.
This device consists of four individual two-inputs
multiplexer/demultiplexer with common select input (S) and
output enable (OE ). The A inputs is connected to the B1 or B2
outputs determined by the combination both the select input (S)
and output enable ( OE). When the output enable (OE ) input is
held “H” level, the switches are open with regardless the state of
select inputs and a high-impedance state exists between the
switches.
All inputs are equipped with protection circuits against static
discharge.
Features Operating voltage: VCC = 4.5 to 5.5 V High speed: tpd = 0.25 ns (max) Low on resistance: RON = 5 Ω (typ.) ESD performance: Machine model ≥ ±200 V
Human body model ≥ ±2000 V Compatible with TTL outputs (control inputs) Package: TSSOP16,VSSOP16 (US16) Pin compatible with the 74xx257 type. Functionally equivalent to (FST/CBT) 3257.
Pin Assignment (top view) VCC 16
4B1
4B2
15
14
13 1 1A
1B1
1B2
(top view)
4A 12
3B1
3B2
3A
11
10
2B1 5 GND
2B2
2A
