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Product Detailed Parameters
- Description：IC DECODER/DEMUX 1X3:8 16SOIC
- Series：74LS
- Mfr：Texas Instruments
- Package：Bulk,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：Surface Mount
- Package / Case：16-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：16-SOIC
- Grade：-
- Qualification：-
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Overview
The SN74LS138D is a 3-to-8 line decoder/demultiplexer manufactured by Texas Instruments. It operates within the LS logic series and accepts three binary inputs to activate one of eight active-low outputs. The device is housed in a 16-pin SOIC (Narrow) surface-mount package. It functions with a supply voltage range of 4.75 V to 5.25 V and supports a propagation delay of 41 ns. The component is rated for an operating temperature range from 0°C to +70°C.
Feature Summary
- Provides decoding and demultiplexing capabilities using three address lines to select one of eight outputs.
- Features active-low outputs suitable for interfacing with various digital logic circuits.
- Includes enable inputs to control device operation and prevent unintended signal activation.
Applications
- Address decoding for memory systems
- Demultiplexing data streams
- Control logic generation
Procurement Notes
Verify the specific ordering suffix against the Package Option Addendum to confirm the exact package type, tube quantity, and moisture sensitivity level. Ensure the RoHS status and lead finish match the design requirements. Confirm the operating temperature grade aligns with the intended application environment before finalizing procurement.
Selection Notes
Select this component when a standard TTL-compatible decoder is required for general-purpose logic applications. Consider the SOIC package for surface-mount assembly needs. Evaluate the LS logic family characteristics regarding speed and power consumption relative to other available options like HC or HCT families if lower power or higher speed is necessary.
Part Context
This part belongs to the SN74LS138 family of decoders and demultiplexers. It is a catalog version of the SN54LS138, which is available in military and space-qualified variants. The SN74LS138D specifically denotes the commercial-grade device in the narrow SOIC package format.
Replacement Considerations
SN74LS138DG4
FAQ
What is the package type for the SN74LS138D?
The SN74LS138D uses a 16-pin SOIC (Narrow) package.
Is the SN74LS138D RoHS compliant?
Yes, the SN74LS138D is listed as RoHS compliant in the Package Option Addendum.
