74AHC138D,112
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NXP Semiconductors 74AHC138D,112

Manufacturer No:
74AHC138D,112
Manufacturer:
NXP Semiconductors
Package:
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Description:
NEXPERIA 74AHC138D - DECODER/DRI
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Product Introduction

Overview

The 74AHC138D,112 is a 3-to-8 line decoder/demultiplexer integrated circuit produced by NXP Semiconductors. This device is part of the 74AHC series, known for its advanced high-speed CMOS technology. It is designed to accept a three-bit binary weighted address on its input pins and produce one active low output, with the remaining seven outputs being high. The device features multiple enable inputs, allowing for flexible control and expansion capabilities.

Key Specifications

Parameter Description Value Unit
Supply Voltage Range VCC 2.0 V to 5.5 V V
Input Voltage Range VI -0.5 V to 7.0 V V
Output Current IO ± 25 mA mA
High-level Input Voltage VIH 2.0 V (min), 3.85 V (max) at VCC = 5 V V
Low-level Input Voltage VIL 0.5 V (max) at VCC = 2.0 V V
Propagation Delay Time tPD 6 ns (typ) at VCC = 5 V ns
Power Dissipation Capacitance Cpd 18 pF (typ) at f = 1 MHz pF
Package Type SO-16, TSSOP-16, SOIC-16

Key Features

  • Wide Supply Voltage Range: Operates from 2.0 V to 5.5 V, making it versatile for various applications.
  • Low Power Consumption: CMOS technology ensures low power consumption.
  • Schmitt Trigger Action: All inputs have Schmitt trigger action, which helps in noise immunity.
  • Multiple Enable Inputs: Two active LOW enable inputs (E1 and E2) and one active HIGH enable input (E3) allow for flexible control and expansion.
  • Parallel Expansion Capability: Can be expanded to create 4-to-16 line and 5-to-32 line decoders with minimal additional components.
  • High Output Drive Capability: Sinks or sources up to 8 mA at VCC = 4.5 V.

Applications

  • Digital Systems: Ideal for use in digital systems requiring decoding and demultiplexing functions.
  • Memory Decoding: Used in memory decoding circuits to select specific memory locations.
  • Data Transmission: Employed in data transmission systems to demultiplex data streams.
  • Control Systems: Utilized in control systems for decoding control signals and activating specific outputs.

Q & A

  1. What is the primary function of the 74AHC138D,112 IC?

    The primary function is to act as a 3-to-8 line decoder/demultiplexer.

  2. What is the supply voltage range for this IC?

    The supply voltage range is from 2.0 V to 5.5 V.

  3. How many enable inputs does the 74AHC138D,112 have?

    It has two active LOW enable inputs (E1 and E2) and one active HIGH enable input (E3).

  4. What is the typical propagation delay time for this IC?

    The typical propagation delay time is 6 ns at VCC = 5 V.

  5. Can the 74AHC138D,112 be expanded to create higher-order decoders?

    Yes, it can be expanded to create 4-to-16 line and 5-to-32 line decoders with minimal additional components.

  6. What type of package is the 74AHC138D,112 available in?

    It is available in SO-16, TSSOP-16, and SOIC-16 packages.

  7. What is the maximum output current this IC can handle?

    The maximum output current is ± 25 mA.

  8. Does the 74AHC138D,112 have Schmitt trigger inputs?

    Yes, all inputs have Schmitt trigger action for improved noise immunity.

  9. What are some common applications of the 74AHC138D,112?

    Common applications include digital systems, memory decoding, data transmission, and control systems.

  10. What is the power dissipation capacitance of the 74AHC138D,112?

    The power dissipation capacitance is typically 18 pF at f = 1 MHz.

Product Attributes

Type:- 
Circuit:- 
Independent Circuits:- 
Current - Output High, Low:- 
Voltage Supply Source:- 
Voltage - Supply:- 
Operating Temperature:- 
Mounting Type:- 
Package / Case:- 
Supplier Device Package:- 
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Similar Products

Part Number 74AHC138D,112 74AHC139D,112 74AHC138D,118 74AHCT138D,112
Manufacturer NXP Semiconductors Nexperia USA Inc. NXP Semiconductors NXP Semiconductors
Product Status Active Obsolete Active Active
Type - Decoder/Demultiplexer - -
Circuit - 1 x 2:4 - -
Independent Circuits - 2 - -
Current - Output High, Low - 8mA, 8mA - -
Voltage Supply Source - Single Supply - -
Voltage - Supply - 2V ~ 5.5V - -
Operating Temperature - -40°C ~ 125°C - -
Mounting Type - Surface Mount - -
Package / Case - 16-SOIC (0.154", 3.90mm Width) - -
Supplier Device Package - 16-SO - -

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