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Product Detailed Parameters
- Description：IC DECODER/DEMUX 1X3:8 16SOIC
- Series：74HC
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- Type：Decoder/Demultiplexer
- Circuit：1 x 3:8
- Independent Circuits：1
- 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 SN74HC138DRE4 is a single 3-to-8 decoder and demultiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and features active-low outputs. The device incorporates three enable inputs (one high, two low) to facilitate cascading or data reception. Designed for high-speed memory decoding and data-routing applications, it offers low power consumption with a maximum ICC of 80 µA at 6 V. Propagation delay times vary from 38 ns to 45 ns depending on the supply voltage.
Feature Summary
- Designed for high-speed memory decoders and data-transmission systems
- Incorporates three enable inputs to simplify cascading or data reception
- Outputs can drive up to 10 LSTTL loads
- Low power consumption with typical propagation delay of 15 ns
Applications
- LED Displays
- Servers
- White Goods
- Power Infrastructure
- Building Automation
Procurement Notes
Verify the component status as production data indicates availability. Confirm the package type matches the required SOIC-16 footprint. Ensure the operating temperature range aligns with system requirements. Check RoHS compliance and lead finish specifications against project constraints. Validate that the ESD ratings meet handling protocols.
Selection Notes
Select this component when a 3-to-8 decoding function is required in CMOS logic designs. It is suitable for applications needing balanced output drive and low input current. Consider the wide operating voltage range for flexibility in different power supply environments. Evaluate the propagation delay characteristics against system timing requirements.
Part Context
This part belongs to the SNx4HC138 family of 3-line to 8-line decoders and demultiplexers. It utilizes CMOS technology to provide high noise immunity and low static power dissipation. The device is designed to minimize system decoding effects in high-performance memory systems. It serves as a key component in digital logic circuits requiring address decoding or signal routing.
Replacement Considerations
SN74HC138DR
FAQ
How many enable inputs does the SN74HC138DRE4 have?
The device has three enable inputs: one active-high (G1) and two active-low (G2A and G2B).
What is the logic state of the selected output?
The selected output is pulled LOW, while all other outputs remain HIGH.
