CAHCT138QPWRG4Q1

Product Overview

Category: Integrated Circuit (IC)

Use: CAHCT138QPWRG4Q1 is a high-speed CMOS 3-to-8 line decoder/demultiplexer IC. It is designed to convert three binary-coded inputs into eight mutually exclusive outputs. This IC is commonly used in digital electronics and microprocessor-based systems.

Characteristics: - High-speed operation - Low power consumption - Wide operating voltage range - Schmitt-trigger input for noise immunity - Balanced propagation delays - ESD protection on all inputs and outputs

Package: CAHCT138QPWRG4Q1 is available in a small-sized, surface-mount TSSOP package. The package provides excellent thermal performance and ease of handling during assembly.

Essence: The essence of CAHCT138QPWRG4Q1 lies in its ability to decode three binary inputs and generate eight output signals, making it an essential component in various digital applications.

Packaging/Quantity: This IC is typically sold in reels or tubes containing a specified quantity, usually ranging from a few hundred to several thousand units per package.

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Maximum Propagation Delay: 15 ns
• Maximum Quiescent Current: 1 µA

Pin Configuration

The CAHCT138QPWRG4Q1 IC has a total of 16 pins, which are assigned specific functions as follows:

| Pin Number | Name | Function | |------------|------|----------| | 1 | A0 | Input | | 2 | A1 | Input | | 3 | A2 | Input | | 4 | GND | Ground | | 5 | Y0 | Output | | 6 | Y1 | Output | | 7 | Y2 | Output | | 8 | Y3 | Output | | 9 | Y4 | Output | | 10 | Y5 | Output | | 11 | Y6 | Output | | 12 | Y7 | Output | | 13 | E1 | Enable | | 14 | E2 | Enable | | 15 | VCC | Power | | 16 | NC | Not Connected |

Functional Features

• Decodes three binary inputs into eight mutually exclusive outputs
• Provides active-low enable inputs for easy control of output signals
• Offers balanced propagation delays for accurate timing in digital systems
• Incorporates Schmitt-trigger input to enhance noise immunity
• Supports a wide range of supply voltages, making it versatile for various applications

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data processing - Low power consumption helps conserve energy in electronic devices - Wide operating voltage range provides flexibility in different power supply scenarios - Schmitt-trigger input ensures reliable performance in noisy environments - ESD protection on all inputs and outputs enhances durability

Disadvantages: - Limited number of input lines may restrict the complexity of applications - Propagation delay of 15 ns may be relatively high for certain time-critical operations

Working Principles

CAHCT138QPWRG4Q1 operates based on the principle of binary decoding. The three input lines (A0, A1, and A2) represent a binary code that selects one of the eight output lines (Y0 to Y7). The enable inputs (E1 and E2) control the activation of the decoder/demultiplexer. When the enable inputs are active, the selected output line becomes active, while all other outputs remain inactive.

Detailed Application Field Plans

CAHCT138QPWRG4Q1 finds applications in various digital systems, including but not limited to: - Address decoding in microprocessors and microcontrollers - Memory selection in RAM and ROM modules - Data routing in multiplexers and demultiplexers - Signal decoding in communication systems - Control logic in digital circuits

Alternative Models

For users seeking alternative options, the following ICs can be considered as substitutes for CAHCT138QPWRG4Q1: - SN74LS138N - CD74HC138E - MC14538B

These alternatives offer similar functionality and can be used interchangeably in most applications.

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