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CD74HCT237, CD74HC137 Datasheet - Texas Instruments

CD74HCT237 - High-Speed CMOS Logic 3 to 8-Line Decoder/Demultiplexer

Both circuits have three binary select inputs (A0, A1 and A2) that can be latched by an active High Latch Enable (LE) signal to isolate the outputs from select-input changes. A “Low” LE makes the output transparent to the input and the circuit functions as a one-of-eight decoder. Two Output Enable .

CD74HCT237 Features

* Select One of Eight Data Outputs - Active Low for CD74HC137 and CD74HCT137 - Active High for ’HC237 and CD74HCT237

* l/O Port or Memory Selector

* Two Enable Inputs to Simplify Cascading

* Typical Propagation Delay of 13ns 15pF, TA = 25oC (CD74HC237) at VCC

CD74HC137-etcTI.pdf