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IN74AC138

IK Semiconductor
Part Number IN74AC138
Manufacturer IK Semiconductor
Description 3-8 Decoder/Demultiplexer
Published Dec 8, 2005
Detailed Description TECHNICAL DATA IN74AC138 1-of-8 Decoder/Demultiplexer High-Speed Silicon-Gate CMOS The IN74AC138 is identical in pinou...
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IN74AC138
IN74AC138


Overview
TECHNICAL DATA IN74AC138 1-of-8 Decoder/Demultiplexer High-Speed Silicon-Gate CMOS The IN74AC138 is identical in pinout to the LS/ALS138, HC/HCT138.
The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALS outputs.
The IN74AC138 decodes a three-bit Address to one-of-eight activelow outputs.
This device features three Chip Select inputs, two active-low and one active-high to facilitate the demultiplexing, cascading, and chipselecting 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.
• 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 • Outputs Source/Sink 24 mA ORDERING INFORMATION IN74AC138N Plastic IN74AC138D SOIC TA = -40° to 85° C for all packages PIN ASSIGNMENT LOGIC DIAGRAM FUNCTION TABLE Inputs CS1 CS2 CS3 X X H X H X L X X H H H H H H H H L L L L L L L L L L L L L L L L A2 A1 A0 X X X X X X X X X L L L L H H H H L L H H L L H H L H L H L H L H Outputs Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 H H H H H H H H H H H H H H H H H H H H H H H H L H H H H H H H H L H H H H H H H H L H H H H H H H H L H H H H H H H H L H H H H H H H H L H H H H H H H H L H H H H H H H H L PIN 16 =VCC PIN 8 = GND w w w .
d h s a t a ee .
u t4 m o c H = high level (steady state) L = low level (steady state) X = don’t care 1 www.
DataSheet4U.
com IN74AC138 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 Current, VCC and GND Pins Power Dissipation in Still Air, Plastic DIP+ SOIC Package+ Storage Temperature Le...


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