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Product Detailed Parameters
- Description：IC DECODER/DEMUX 1X2:4 16SOIC
- Series：74HC
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- Type：Decoder/Demultiplexer
- Circuit：1 x 2:4
- Independent Circuits：2
- Current - Output High, Low：5.2mA, 5.2mA
- Voltage Supply Source：Single Supply
- Voltage - Supply：2V ~ 6V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：16-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：16-SOIC
- Grade：-
- Qualification：-
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Overview
The SN74HC139DRE4 is a dual 2-line to 4-line decoder and demultiplexer from the Texas Instruments HC logic family. It operates within a supply voltage range of 2 V to 6 V and supports an operating temperature range of -40°C to 85°C. The device features fully buffered inputs, low power consumption with a maximum ICC of 80 μA, and typical propagation delays of 10 ns at 5 V. Outputs can drive up to 10 LSTTL loads with ±4 mA drive capability at 5 V.
Feature Summary
- Designed for high-speed memory decoders and data-transmission systems
- Incorporates two enable inputs to simplify cascading and data reception
- Active-low output strobe allows gating outputs into a high state
Applications
- High-performance memory decoding
- Data-routing applications
- Demultiplexing circuits
Procurement Notes
Verify the specific ordering suffix 'E4' against the manufacturer's current package option addendum to confirm lead finish and RoHS compliance status. Ensure the SOIC-16 package dimensions match the target PCB footprint requirements before finalizing procurement.
Selection Notes
Select this component when a dual 2-to-4 decoder is required in a surface-mount SOIC-16 package. It is suitable for designs needing wide voltage operation between 2 V and 6 V. Consider alternative packages like TSSOP or SSOP if smaller footprints are necessary.
Part Context
This part belongs to the SNx4HC139 series, which includes variants in PDIP, SSOP, TSSOP, and other packages. The 'D' indicates the SOIC package type, while 'RE4' denotes reel packaging and environmental compliance. It is a standard catalog product distinct from automotive (Q1) or military (54HC) versions.
Replacement Considerations
SN74HC139DR
FAQ
Can the enable input be used as a data line?
Yes, the active-low enable (G) input can function as a data line in demultiplexing applications.
What happens when the outputs are disabled by the strobe input?
When not disabled by the strobe input, only the selected output is low while all others remain high.
