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Product Detailed Parameters
- Description：3-LINE TO 8-LINE DECODERS/DEMULT
- Series：74HC
- Mfr：Texas Instruments
- Package：Tube
- 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：Through Hole
- Package / Case：16-DIP (0.300", 7.62mm)
- Supplier Device Package：16-PDIP
- Grade：-
- Qualification：-
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Overview
The SN74HC138NE4 is a single 3-to-8 decoder and demultiplexer from the Texas Instruments HC logic family. 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-active, two low-active) to facilitate cascading or data reception applications.
Feature Summary
- Designed for high-speed memory decoding and data transmission systems requiring short propagation delays
- Incorporates three enable inputs to simplify cascading or data reception without external inverters
- Outputs can drive up to 10 LSTTL loads with balanced output drive capabilities
Applications
- LED Displays
- Servers
- White Goods
- Power Infrastructure
- Building Automation
Procurement Notes
Verify the specific ordering suffix 'E4' against current manufacturer documentation to confirm compliance status and material specifications. Confirm package dimensions and thermal characteristics match the design requirements before finalizing procurement decisions.
Selection Notes
Select this component when a standard CMOS 3-to-8 decoder is required for general-purpose logic applications. Ensure the operating temperature range of -40°C to +85°C aligns with the system environment. Verify that the PDIP-16 package fits the available PCB footprint constraints.
Part Context
This part belongs to the SNx4HC138 series of 3-line to 8-line decoders and demultiplexers manufactured by Texas Instruments. The 'N' suffix indicates a PDIP-16 through-hole package, while the 'E4' suffix typically denotes environmental compliance attributes such as lead-free composition.
Replacement Considerations
SN74HC138N
FAQ
How many enable inputs does the SN74HC138NE4 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.
