CD54HC138 - High-Speed CMOS Logic 3 to 8-Line Decoder/Demultiplexer Inverting/Noninverting
The CDx4HC(T)138 and '238 are three to eight decoders with one standard output strobe (G2) and two active low output strobes (G 1 and G 0).
When the outputs are gated by any of the strobe inputs, they are all forced into the high state.
When the outputs are not disabled by the strobe inputs, only t
CD54HC138 Features
* Select one of eight data outputs:
* Active low for '138
* Active high for '238
* l/O port or memory selector
* Three enable inputs to simplify cascading
* Typical propagation delay of 13 ns at VCC = 5 V, CL = 15 pF, TA = 25°C
* Fanout (over t
