74HC139M - Brand New STMicroelectronics Signal Switches / Encoders & Decoders / Multiplexers
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Description
The Harris CD74HC139, CD74HCT139 is an electronic component model that contains two independent binary to one of four decoders. Each decoder has a single active low enable input (1E or 2E). When data is applied to the select inputs (1A0 and 1A1 or 2A0 and 2A1), one of the four normally high outputs will go low. However, if the enable input is high, all four outputs will remain high. This component can also function as a demultiplexer with the enable input acting as the data input. It is functionally the same as the CD4556B and is pin compatible with it. The outputs of this component can drive 10 low power Schottky TTL equivalent loads. It is important to note that the 74HCT logic family is functionally and pin equivalent to the 74LS logic family.
Specifications and features
- Multifunction Capability
- Binary to 1 of 4 Decoders or 1 to 4 Line Demultiplexer
- Active Low Mutually Exclusive Outputs
- Fanout (Over Temperature Range):
- Standard Outputs: 10 LSTTL Loads
- Bus Driver Outputs: 15 LSTTL Loads
- Wide Operating Temperature Range: -55°C to 125°C
- Balanced Propagation Delay and Transition Times
- Significant Power Reduction Compared to LSTTL Logic ICs
- HC Types:
- 2V to 6V Operation
- High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V
- HCT Types:
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility, VIL = 0.8V (Max), VIH = 2V (Min)
- CMOS Input Compatibility, Il ≤ 1µA at VOL, VOH
- Memory Decoding, Data Routing, Code Conversion
Application Scenarios
The Harris CD74HC139, CD74HCT139 can be used in various electronic applications. Some common scenarios include memory decoding, data routing, and code conversion. Its multifunction capability makes it versatile and suitable for different circuit designs.
Comparison
Advantages- Multifunction capability allows for different applications
- Wide operating temperature range
- Balanced propagation delay and transition times
- Significant power reduction compared to LSTTL Logic ICs
Disadvantages- High noise immunity for HC Types may not be suitable for all applications
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Similar parts: 5502 , Click to view
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Datasheet
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Shopping guide
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Popular parts of the same kind
- Datasheet: Download 74HC139M
- Chipdatas Part: CD94-74HC139M
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/06/13 03:45 +0800
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- Full or Partial Refund , If the item is not as described
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