SN74LS138DR
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Texas Instruments SN74LS138DR

Manufacturer No:
SN74LS138DR
Manufacturer:
Texas Instruments
Package:
Tape & Reel (TR)
Description:
IC DECODER/DEMUX 1X3:8 16SOIC
Delivery:
Payment:
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Product Introduction

Overview

The SN74LS138DR is a 3-line to 8-line decoder/demultiplexer integrated circuit manufactured by Texas Instruments. This component is part of the 74LS series and is designed for high-speed applications, particularly in memory decoding and data transmission systems. It features Schottky-clamped TTL MSI circuits, which provide high performance and short propagation delay times, making it suitable for use in high-performance memory systems and data-routing applications.

Key Specifications

Parameter Value
Package 16-SOIC (0.154", 3.90mm Width)
Series 74LS
Type Decoder/Demultiplexer
Circuit 1 x 3:8
Independent Circuits 1
Current - Output High, Low 400µA, 8mA
Voltage Supply Source Single Supply
Voltage - Supply 4.75 V ~ 5.25 V
Operating Temperature 0°C ~ 70°C
Mounting Type Surface Mount

Key Features

  • Designed specifically for high-speed applications such as memory decoders and data transmission systems.
  • Three enable inputs to simplify cascading and/or data reception.
  • Schottky-clamped for high performance and to suppress line-ringing.
  • Fully buffered inputs, each representing only one normalized load to its driving circuit.
  • Enable input can be used as a data input for demultiplexing applications.
  • ROHS compliant and lead-free.

Applications

  • High-performance memory decoding and data-routing applications.
  • Memory systems requiring very short propagation delay times.
  • Data transmission systems where high speed and low latency are critical.
  • Cascading and expanding decoder/demultiplexer circuits without the need for external gates or inverters).

Q & A

  1. What is the SN74LS138DR used for?

    The SN74LS138DR is used as a 3-line to 8-line decoder/demultiplexer in high-speed applications such as memory decoding and data transmission systems).

  2. What package type does the SN74LS138DR come in?

    The SN74LS138DR comes in a 16-SOIC (0.154", 3.90mm Width) package).

  3. What is the operating temperature range of the SN74LS138DR?

    The operating temperature range of the SN74LS138DR is from 0°C to 70°C).

  4. What is the voltage supply range for the SN74LS138DR?

    The voltage supply range for the SN74LS138DR is from 4.75 V to 5.25 V).

  5. Is the SN74LS138DR ROHS compliant?

    Yes, the SN74LS138DR is ROHS compliant and lead-free).

  6. What are the key features of the SN74LS138DR?

    The key features include Schottky-clamped for high performance, three enable inputs, fully buffered inputs, and the ability to use an enable input as a data input for demultiplexing).

  7. How does the SN74LS138DR simplify cascading and data reception?

    The SN74LS138DR simplifies cascading and data reception through its three enable inputs, reducing the need for external gates or inverters).

  8. What types of applications benefit from using the SN74LS138DR?

    Applications that benefit include high-performance memory decoding, data transmission systems, and any system requiring short propagation delay times).

  9. Can the SN74LS138DR be used in military temperature ranges?

    No, the SN74LS138DR is characterized for operation from 0°C to 70°C, not the full military temperature range).

  10. How many normalized loads do the inputs of the SN74LS138DR represent?

    Each input of the SN74LS138DR represents only one normalized load to its driving circuit).

Product Attributes

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
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Similar Products

Part Number SN74LS138DR SN74LS158DR SN74LS148DR SN74LS138D
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Product Status Active Active Active Active
Type Decoder/Demultiplexer Multiplexer Priority Encoder Decoder/Demultiplexer
Circuit 1 x 3:8 4 x 2:1 1 x 8:3 1 x 3:8
Independent Circuits 1 1 1 1
Current - Output High, Low 400µA, 8mA 400µA, 8mA 400µA, 8mA 400µA, 8mA
Voltage Supply Source Single Supply Single Supply Single Supply Single Supply
Voltage - Supply 4.75V ~ 5.25V 4.75V ~ 5.25V 4.75V ~ 5.25V 4.75V ~ 5.25V
Operating Temperature 0°C ~ 70°C 0°C ~ 70°C 0°C ~ 70°C 0°C ~ 70°C
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 16-SOIC (0.154", 3.90mm Width) 16-SOIC (0.154", 3.90mm Width) 16-SOIC (0.154", 3.90mm Width) 16-SOIC (0.154", 3.90mm Width)
Supplier Device Package 16-SOIC 16-SOIC 16-SOIC 16-SOIC

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