(China (Mainland))
Product Summary
The SN74HC139N is a dual 2-line to 4-line decoder/demultiplexer designed for high-performance memory-decoding or data-routing applications requiring very short propagation delay times. In high-performance memory systems, the SN74HC139N can minimize the effects of system decoding. When employed with high-speed memories utilizing a fast enable circuit, the delay time of the SN74HC139N and the enable time of the memory usually are less than the typical access time of the memory. This means that the effective system delay introduced by the decoders is negligible.
Parametrics
SN74HC139N absolute maximum ratings: (1)Supply voltage range, VCC: -0.5 V to 7 V; (2)Input clamp current, IIK (VI < 0 or VI > VCC) : ±20 mA; (3)Output clamp current, IOK (VO < 0 or VO > VCC): ±20 mA; (4)Continuous output current, IO (VO = 0 to VCC): ±25 mA; (5)Continuous current through VCC or GND: ±50 mA; (6)Package thermal impedance, θJA: 73℃/W; (7)Storage temperature range, Tstg: -65 to 150℃.
Features
SN74HC139N features: (1)Targeted Specifically for High-Speed Memory Decoders and Data-Transmission Systems; (2)Wide Operating Voltage Range of 2 V to 6 V; (3)Outputs Can Drive Up To 10 LSTTL Loads; (4)Low Power Consumption, 80-μA Max ICC; (5)Typical tpd = 10 ns; (6)±4-mA Output Drive at 5 V; (7)Low Input Current of 1 μA Max; (8)Incorporate Two Enable Inputs to Simplify Cascading and/or Data Reception.
Diagrams
| Image | Part No | Mfg | Description |  |
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 SN74HC139N |
Texas Instruments |
Encoders, Decoders, Multiplexers & Demultiplexers Dual Line |
Data Sheet |
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SN74HC139NE4 |
Texas Instruments |
Encoders, Decoders, Multiplexers & Demultiplexers Dual Line |
Data Sheet |
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SN74HC139NSR |
Texas Instruments |
Encoders, Decoders, Multiplexers & Demultiplexers Dual 2 to 4-Line Decdr/Demltplxer |
Data Sheet |
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SN74HC139NSRE4 |
Texas Instruments |
Encoders, Decoders, Multiplexers & Demultiplexers Dual 2 to 4-Line Decdr/Demltplxer |
Data Sheet |
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SN74HC139NSRG4 |
Texas Instruments |
Encoders, Decoders, Multiplexers & Demultiplexers Dual 2Ln To 4Ln Decoder Demultiplexr |
Data Sheet |
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