IN74AC139

TECHNICAL DATA Dual 1-of-4 Decoder/Demultiplexer High-Speed Silicon-Gate CMOS IN74AC139 The IN74AC139 is identical in pinout to the LS/ALS139, HC/HCT139. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALS outputs. This device consists of two independent 1-of-4 decoders, each of which decodes a two-bit Address to one-of-four active-low outputs. Active-low Selects are provided to facilitate the demultiplexing and cascading functions. The demultiplexing function is accomplished by using the Address inputs to select the desired device output, and utilizing the Select as a data input. Outputs Directly Interface to CMOS, NMOS, and TTL Operating Voltage Range: 2.0 to 6.0 V Low Input Current: 1.0 µA; 0.1 µA @ 25°C High Noise Immunity Characteristic of CMOS Devices ORDERING INFORMATION Outputs Source/Sink 24 mA IN74AC139N Plastic IN74AC139D SOIC TA = -40° to 85° C for all packages LOGIC DIAGRAM PIN ASSIGNMENT FUNCTION TABLE Inputs PIN 16 =VCC PIN 8 = GND Select H L L L L A1 X L L H H A0 X L H L H Y0 H L H H H Outputs Y1 H H L H H Y2 H H H L H Y3 H H H H L w w w .d h s a t a ee . u t4 m o c X = don’t care 1 www.DataSheet4U.com IN74AC139 MAXIMUM RATINGS* Symbol VCC VIN VOUT IIN IOUT ICC PD Tstg TL * Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage (Referenced to GND) DC Output Voltage (Referenced to GND) DC Input Current, per Pin DC Output Sink/Source Current, per Pin DC Supply ...