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Product Detailed Parameters
- Description：IC DECODER/DEMUX 1X2:4 16SOIC
- Series：74LV
- Mfr：Texas Instruments
- Package：Bulk,Tube
- Type：Decoder/Demultiplexer
- Circuit：1 x 2:4
- Independent Circuits：2
- Current - Output High, Low：12mA, 12mA
- Voltage Supply Source：Single Supply
- Voltage - Supply：2V ~ 5.5V
- 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 SN74LV139AD is a dual 2-line to 4-line decoder/demultiplexer from the SN74LV139A series, manufactured by Texas Instruments. It operates within a supply voltage range of 2V to 5.5V and supports mixed-mode voltage operation on all ports. The device incorporates two enable inputs to simplify cascading and data reception. Designed for high-speed memory decoders and data-transmission systems, it features Ioff circuitry that supports partial-power-down mode operation. The component is housed in a 16-pin SOIC package.
Feature Summary
- Supports mixed-mode voltage operation across all ports
- Incorporates two enable inputs to simplify cascading and data reception
- Features Ioff circuitry for partial-power-down mode operation
Applications
- High-speed memory decoders
- Data-transmission systems
- Memory-decoding applications requiring short propagation delay times
Procurement Notes
Verify the specific ordering suffix against the Package Option Addendum to confirm the exact package type and status. The SN74LV139AD designation indicates an obsolete production status; ensure compatibility with active alternatives such as SN74LV139ADR if current manufacturing availability is required. Confirm RoHS compliance and moisture sensitivity levels prior to procurement.
Selection Notes
Select this component when designing systems requiring dual 2-to-4 decoding or demultiplexing functions within a single package. It is suitable for applications needing support for mixed-mode voltage environments and partial-power-down capabilities. Ensure the design accommodates the 16-pin SOIC footprint and verifies that the operating temperature range meets system requirements.
Part Context
This part belongs to the SN74LV139A family of dual 2-line to 4-line decoders and demultiplexers. These devices are engineered for high-performance memory-decoding or data-routing applications where minimizing system decoding effects is critical. The family includes variants in various packages including SSOP, TSSOP, SOP, and VQFN.
Replacement Considerations
SN74LV139ADR
FAQ
What is the function of the G input?
The G input serves as an active-low output enable for each channel. In demultiplexing applications, it can also be used as a data line.
How does the device handle partial-power-down scenarios?
The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.
