Product Overview MC74HC138A: 1-of-8 Decoder/Demultiplexer For complete documentation, see the data sheet Product Description The MC74HC138A is identical in pinout to the LS138. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs. The HC138A decodes a three bit Address to one of eight active low outputs. This device features three Chip Select inputs, two active low and one active high to facilitate the demultiplexing, cascading, and chip selecting functions. The demultiplexing function is accomplished by using the Address inputs to select the desired device output; one of the Chip Selects is used as a data input while the other Chip Selects are held in their active states. Features • • • • • • • • Output Drive Capability: 10 LSTTL Loads Outputs Directly Interface to CMOS, NMOS and TTL Operating Voltage Range: 2.0 to 6.0 V Low Input Current: 1.0 <FONT FACE=SYMBOL>m</FONT>A High Noise Immunity Characteristic of CMOS Devices In Compliance with the Requirements Defined by JEDEC Standard No. 7A Chip Complexity: 100 FETs or 29 Equivalent Gates Pb-Free Packages are Available* Part Electrical Specifications Product Compliance Status Channels VCC Min (V) VCC Max (V) tpd Max (ns) IO Max (mA) Package Type MC74HC138ADG Pb-free Active 1 2 6 19 5.2 SOIC-16 Active 1 2 6 19 5.2 SOIC-16 Active 1 2 6 19 5.2 TSSOP-16 Active 1 2 6 27 4 SOIC-16 Active 1 2 6 27 4 TSSOP-16 Halide free MC74HC138ADR2G Pb-free Halide free MC74HC138ADTR2G Pb-free Halide free NLV74HC138ADR2G AEC Qualified PPAP Capable Pb-free Halide free NLV74HC138ADTR2 G AEC Qualified PPAP Capable Pb-free Halide free For more information please contact your local sales support at www.onsemi.com Created on: 6/30/2016