MC74LCX138DR2G

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Decoding and demultiplexing
• Characteristics:
  • Low-voltage operation
  • High-speed performance
  • Wide operating temperature range
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: 3-to-8 line decoder/demultiplexer
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 100 MHz
• Propagation Delay Time: 4.5 ns (typical)

Detailed Pin Configuration

The MC74LCX138DR2G has a total of 16 pins. The pin configuration is as follows:

+---+--+---+ A0 --|1 +--+ 16|-- VCC A1 --|2 15|-- Y7 A2 --|3 14|-- Y6 GND --|4 13|-- Y5 Y0 --|5 12|-- Y4 Y1 --|6 11|-- Y3 Y2 --|7 10|-- Y2 /E1 --|8 9|-- /E2 +----------+

Functional Features

• Decodes three binary address inputs (A0, A1, A2) into eight mutually exclusive outputs (Y0-Y7).
• Can be used as a demultiplexer by enabling one of the eight outputs based on the input address.
• Low-voltage operation allows compatibility with various logic families.
• High-speed performance ensures efficient decoding and demultiplexing operations.
• Wide operating temperature range makes it suitable for various environments.

Advantages

• Compact size and integrated design save space on circuit boards.
• Low-voltage operation reduces power consumption.
• High-speed performance enables quick decoding and demultiplexing.
• Wide operating temperature range ensures reliability in different conditions.

Disadvantages

• Limited to 3-to-8 line decoding/demultiplexing functionality.
• May require additional components for complex applications.

Working Principles

The MC74LCX138DR2G operates based on the input address provided through A0, A1, and A2 pins. These inputs are decoded internally, and one of the eight outputs (Y0-Y7) is enabled based on the input address. The /E1 and /E2 pins control the enable/disable functionality of the decoder/demultiplexer.

Detailed Application Field Plans

The MC74LCX138DR2G can be used in various applications, including: - Address decoding in microcontrollers and microprocessors. - Data routing and selection in multiplexers. - Memory addressing in RAM and ROM systems. - Signal routing and distribution in communication systems. - Control signal generation in digital circuits.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the MC74LCX138DR2G include: - SN74LS138N by Texas Instruments - CD74HC138E by Texas Instruments - 74HCT138 by NXP Semiconductors - 74F138 by Fairchild Semiconductor

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