MC74HC138AN

Decode and control up to outputs with this versatile IC
5,003 有效庫存

MC74HC138AN

有效庫存5,003

Decode and control up to outputs with this versatile IC

  • 製造商零件號 # : MC74HC138AN

  • 包裝/封裝: PDIP-16

  • 零件狀態 : OBSOLETE

  • 製造商: Onsemi

  • 產品分類 : Signal Switches, Multiplexers, Decoders

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MC74HC138AN 數據表
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詳細說明

1-of-8 Decoder/DemultiplexerHigh–Performance Silicon–Gate CMOSThe MC74HC138A is identical in pinout to the LS138. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs.The HC138A decodes a three–bit Address to one–of–eightactive–low outputs. This device features three Chip Select inputs, two active–low and one active–high to facilitate the demultiplexing, cascading, and chip–selecting functions. The demultiplexing function is accomplished by using the Address inputs to select the desired device output; one of the Chip Selects is used as a data input while the other Chip Selects are held in their active states.• Output Drive Capability: 10 LSTTL Loads• Outputs Directly Interface to CMOS, NMOS and TTL• Operating Voltage Range: 2.0 to 6.0 V• Low Input Current: 1.0 µA• High Noise Immunity Characteristic of CMOS Devices• In Compliance with the Requirements Defined by JEDEC Standard No. 7A• Chip Complexity: 100 FETs or 29 Equivalent Gates

主要特徵

  • This device has low power consumption and wide operating temperature range
  • It is suitable for use in digital systems such as computer and communication equipment
  • This device can operate in a wide range of temperatures and humidity levels
  • It has high speed and low power consumption

應用

  • Reliable solution for complex designs
  • Provides precise control options
  • Maximizes efficiency and functionality

規格

以下是所選零件的基本參數，涉及零件的特性及其所屬類別。

Rohs Code No Part Life Cycle Code Transferred
Reach Compliance Code compliant ECCN Code EAR99
HTS Code ! 8542.39.00.01 Additional Feature ! 3 ENABLE INPUTS
Family HC/UH JESD-30 Code R-PDIP-T16
JESD-609 Code e0 Length 19.175 mm
Load Capacitance (CL) 50 pF Logic IC Type OTHER DECODER/DRIVER
Number of Functions 1 Number of Terminals 16
Operating Temperature-Max 125 °C Operating Temperature-Min -55 °C
Output Polarity INVERTED Package Body Material PLASTIC/EPOXY
Package Code DIP Package Shape RECTANGULAR
Package Style IN-LINE Propagation Delay (tpd) 41 ns
Qualification Status ! Not Qualified Seated Height-Max 4.44 mm
Supply Voltage-Max (Vsup) 6 V Supply Voltage-Min (Vsup) 2 V
Supply Voltage-Nom (Vsup) 5 V Surface Mount ! NO
Technology CMOS Temperature Grade ! MILITARY
Terminal Finish TIN LEAD Terminal Form ! THROUGH-HOLE
Terminal Pitch ! 2.54 mm Terminal Position DUAL
Width 7.62 mm Product Category ! Encoders, Decoders, Multiplexers & Demultiplexers
RoHS N Product Decoders, Encoders, Multiplexers & Demultiplexers
Logic Family 74HC Number of Bits 3 bit
Number of Input Lines 1 Input Number of Output Lines 8 Output
Supply Voltage - Min 2 V Supply Voltage - Max 6 V
Minimum Operating Temperature - 55 C Maximum Operating Temperature ! + 125 C
Mounting Style Through Hole Package / Case PDIP-16
Brand onsemi Function Decoder/Demultiplexer
Height 3.43 mm High Level Output Current ! - 5.2 mA
Logic Type Decoders/Demultiplexers Low Level Output Current ! 5.2 mA
Number of Circuits 1 Circuit Operating Supply Voltage ! 2 V to 6 V
Product Type ! Encoders, Decoders, Multiplexers & Demultiplexers Factory Pack Quantity 500
Subcategory Logic ICs Supply Current - Max 4 uA
Unit Weight 0.057419 oz

數據表 PDF

數據表記錄了器件的特性、絕對最大額定值、應用等，這對於作為器件特定應用的整體指南大有裨益。

初步規格 MC74HC138AN PDF 下載

常見問題解答

What is MC74HC138AN?

The MC74HC138AN is a 3-to-8 line decoder/demultiplexer IC (integrated circuit) designed by ON Semiconductor. It is widely used in digital electronics for address decoding, data routing, and signal demultiplexing in microcontroller and microprocessor systems.

How Does MC74HC138AN Work?

The MC74HC138AN works by taking a 3-bit binary input and selecting one of the eight outputs based on the input code. It uses its internal logic to activate the corresponding output line while keeping the other output lines inactive. This functionality allows it to route data or control signals to the intended destination based on the input address.

How Many Pins does MC74HC138AN have and What are the Functions of the Pinout Configuration?

The MC74HC138AN is housed in a 16-pin DIP (Dual Inline Package) package. The pinout configuration includes:

  • GND: Ground pin.
  • VCC: Power supply pin.
  • A0, A1, A2: Address input pins.
  • E1, E2: Enable input pins.
  • Y0 to Y7: Output pins.
  • G1, G2A, G2B: Gating input pins.

What are the Pros and Cons of MC74HC138AN?

Pros:

  • High Flexibility: Provides versatile address decoding and data routing capabilities.
  • Wide Applicability: Suitable for various digital systems requiring demultiplexing and signal routing.
  • Low Power Consumption: Operates with low power, contributing to energy-efficient designs.
  • Easy Integration: Can be easily integrated into digital circuits due to its standard logic level input and output voltages.

Cons:

  • Propagation Delay: May introduce a slight delay in signal routing, affecting real-time applications.
  • Complex Pinout: The 16-pin DIP package may require more board space compared to smaller package types.
  • External Pull-up/Pull-down Resistors: May require external resistors for proper operation in certain configurations.

Are There Any Equivalents/Alternatives to MC74HC138AN for Recommendation?

  • The 74HC238 from NXP Semiconductors is a similar 3-to-8 line decoder/demultiplexer IC.
  • Alternatives to the MC74HC138AN include the DM74LS138 from Fairchild Semiconductor and the SN74LS138 from Texas Instruments.

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