TC74VCX257FK multiplexer equivalent, low-voltage quad 2-channel multiplexer.
(1) Low-voltage operation: VCC = 1.2 to 3.6 V (2) High-speed operation: tpd = 3.0 ns (max) (VCC = 3.0 to 3.6 V)
tpd = 4.0 ns (max) (VCC = 2.3 to 2.7 V) tpd = 8.0 ns (max).
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