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Product Detailed Parameters
- Description：3-LINE TO 8-LINE DECODER / DEMUL
- Series：74LS
- Mfr：Texas Instruments
- Package：Tube
- Type：Decoder/Demultiplexer
- Circuit：1 x 3:8
- Independent Circuits：1
- Current - Output High, Low：400µA, 8mA
- Voltage Supply Source：Single Supply
- Voltage - Supply：4.75V ~ 5.25V
- Operating Temperature：0°C ~ 70°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 SN74LS138NE4 is a low-power Schottky 3-to-8 line decoder/demultiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 4.75 V to 5.25 V and supports an operating temperature range of 0°C to 70°C. The device features three address inputs and eight active-low outputs, utilizing a 16-pin PDIP package with NIPDAU lead finish. It complies with RoHS standards and is designated as an active production component.
Feature Summary
- Provides decoding and demultiplexing functions using three address lines to select one of eight active-low outputs
- Incorporates low-power Schottky (LS) logic technology for enhanced performance
- Includes enable inputs to control chip activation and output states
Applications
- Data routing in digital systems
- Memory address decoding
- Control signal generation
Procurement Notes
Verify the specific ordering suffix 'E4' corresponds to the required lead finish and environmental compliance specifications. Confirm that the PDIP package type aligns with the target printed circuit board design constraints. Ensure the catalog status remains active for long-term procurement planning.
Selection Notes
Select this component when a standard TTL-compatible decoder with low-power characteristics is required. Verify that the 0°C to 70°C commercial temperature range meets the operational environment requirements. Consider the 16-pin through-hole packaging for prototyping or applications where surface-mount options are unsuitable.
Part Context
This part belongs to the SN74LS138 family of decoders. It shares functional compatibility with other variants such as SN74LS138N and SN74LS138D, differing primarily in package style and manufacturing revisions. The 'E4' suffix indicates a specific material and environmental configuration within the broader product line.
Replacement Considerations
SN74LS138N
FAQ
What is the logic family of the SN74LS138NE4?
It utilizes Low-Power Schottky (LS) logic technology.
How many address inputs does this decoder have?
The device has three address inputs to decode into eight outputs.
