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SN74LS138

Motorola
Part Number SN74LS138
Manufacturer Motorola
Description 1-OF-8 DECODER/ DEMULTIPLEXER
Published Feb 20, 2015
Detailed Description 1-OF-8 DECODER/ DEMULTIPLEXER The LSTTL / MSI SN54 / 74LS138 is a high speed 1-of-8 Decoder / Demultiplexer. This device...
Datasheet PDF File SN74LS138 PDF File

SN74LS138
SN74LS138

Overview
1-OF-8 DECODER/ DEMULTIPLEXER The LSTTL / MSI SN54 / 74LS138 is a high speed 1-of-8 Decoder / Demultiplexer.
This device is ideally suited for high speed bipolar memory chip select address decoding.
The multiple input enables allow parallel expansion to a 1-of-24 decoder using just three LS138 devices or to a 1-of-32 decoder using four LS138s and one inverter.
The LS138 is fabricated with the Schottky barrier diode process for high speed and is completely compatible with all Motorola TTL families.
• Demultiplexing Capability • Multiple Input Enable for Easy Expansion • Typical Power Dissipation of 32 mW • Active Low Mutually Exclusive Outputs • Input Clamp Diodes Limit High Speed Termination Effects CONNECTION DIAGRAM DIP (TOP VIEW) VCC O0 O1 O2 O3 O4 O5 O6 16 15 14 13 12 11 10 9 NOTE: The Flatpak version has the same pinouts (Connection Diagram) as the Dual In-Line Package.
1 2 3 4 56 78 A0 A1 A2 E1 E2 E3 O7 GND PIN NAMES LOADING (Note a) HIGH LOW A0 – A2 E1, E2 E3 O0 – O7 Add...


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