Product Summary
The 74HC138 is a 3-to-8 line decoder/demultiplexer. It is pin compatible with Low-power Schottky TTL (LSTTL). The 74HC138 can be used as an eight output demultiplexer by using one of the active LOW enable inputs as the data input and the remaining enable inputs as strobes. Not used enable inputs must be permanently tied to their appropriate active HIGH- or LOW-state.
Parametrics
74HC138 absolute maximum ratings: (1)supply voltage: -0.5V to +7 V; (2)input clamping current: ±20 mA; (3)output clamping current: ±20 mA; (4)output current: ±25 mA; (5)quiescent supply current: 50 mA; (6)ground current: -50 mA; (7)storage temperature: -65℃ to +150℃; (8)total power dissipation: 750 mW.
Features
74HC138 features: (1)Demultiplexing capability; (2)Multiple input enable for easy expansion; (3)Complies with JEDEC standard no. 7A; (4)Ideal for memory chip select decoding; (5)Active LOW mutually exclusive outputs; (6)ESD protection:HBM EIA/JESD22-A114-C exceeds 2000 V, MM EIA/JESD22-A115-A exceeds 200 V; (7)Specified from -40℃ to +85℃ and from -40℃ to +125℃.
Diagrams
Image | Part No | Mfg | Description | Pricing (USD) |
Quantity | |||||||||||||
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74HC138BQ,115 |
NXP Semiconductors |
Encoders, Decoders, Multiplexers & Demultiplexers 3-TO-8 LINE DECODER |
Data Sheet |
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74HC138BQ-G |
NXP Semiconductors |
Encoders, Decoders, Multiplexers & Demultiplexers 3-TO-8 LINE DECODER |
Data Sheet |
Negotiable |
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74HC138D |
Other |
Data Sheet |
Negotiable |
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74HC138D,652 |
NXP Semiconductors |
Encoders, Decoders, Multiplexers & Demultiplexers 3-8 LINE DCOD/DMUX |
Data Sheet |
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74HC138D,653 |
NXP Semiconductors |
Encoders, Decoders, Multiplexers & Demultiplexers 3-OF-8 DECODER/DEMUX |
Data Sheet |
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74HC138DB |
NXP Semiconductors |
Encoders, Decoders, Multiplexers & Demultiplexers 3-OF-8 DECODER/DEMUX |
Data Sheet |
Negotiable |
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74HC138DB,112 |
NXP Semiconductors |
Encoders, Decoders, Multiplexers & Demultiplexers 3-OF-8 DECODER/DEMUX |
Data Sheet |
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74HC138DB-T |
NXP Semiconductors |
Encoders, Decoders, Multiplexers & Demultiplexers 3-OF-8 DECODER/DEMUX |
Data Sheet |
Negotiable |
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