74LS139

DUAL 1-OF-4 DECODER/ DEMULTIPLEXER The LSTTL/MSI SN54/74LS139 is a high speed Dual 1-of-4 Decoder /Demultiplexer. The device has two independent decoders, each accepting two inputs and providing four mutually exclusive active LOW Outputs. Each decoder has an active LOW Enable input which can be used as a data input for a 4-output demultiplexer. Each half of the LS139 can be used as a function generator providing all four minterms of two variables. The LS139 is fabricated with the Schottky barrier diode process for high speed and is completely compatible with all Motorola TTL families. SN54/74LS139 DUAL 1-OF-4 DECODER/ DEMULTIPLEXER LOW POWER SCHOTTKY Schottky Process for High Speed Multifunction Capability Two Completely Independent 1-of-4 Decoders Active Low Mutually Exclusive Outputs Input Clamp Diodes Limit High Speed Termination Effects ESD > 3500 Volts CONNECTION DIAGRAM DIP (TOP VIEW) VCC 16 Eb 15 AOb 14 A1b 13 O0b 12 O1b 11 O2b 10 O3b 9 NOTE: The Flatpak version has the same pinouts (Connection Diagram) as the Dual In-Line Package. J SUFFIX CERAMIC CASE 620-09 16 1 16 1 N SUFFIX PLASTIC CASE 648-08 1 Ea 2 A0a 3 A1a 4 O0a 5 O1a 6 O2a 7 O3a 8 GND 16 1 D SUFFIX SOIC CASE 751B-03 PIN NAMES A0, A1 E O0 – O3 Address Inputs Enable (Active LOW) Input Active LOW Outputs (Note b) LOADING (Note a) HIGH 0.5 U.L. 0.5 U.L. 10 U.L. LOW 0.25 U.L. 0.25 U.L. 5 (2.5) U.L. ORDERING INFORMATION SN54LSXXXJ SN74LSXXXN SN74LSXXXD Ceramic Plastic SOIC NOTES: a) ...