CD74HC238PWRE4

Product Overview

• Category: Integrated Circuit
• Use: Decoding and Demultiplexing
• Characteristics: High-Speed CMOS Logic, 3-to-8 Line Decoder/Demultiplexer
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: A versatile decoder/demultiplexer IC used in various digital applications
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 2V to 6V
• High-Level Input Voltage: 2V to VCC
• Low-Level Input Voltage: GND to 0.8V
• High-Level Output Current: -5mA
• Low-Level Output Current: 5mA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The CD74HC238PWRE4 has a total of 16 pins, which are assigned specific functions as follows:

1. A0: Address Input 0
2. A1: Address Input 1
3. A2: Address Input 2
4. GND: Ground
5. Y0: Output 0
6. Y1: Output 1
7. Y2: Output 2
8. Y3: Output 3
9. Y4: Output 4
10. Y5: Output 5
11. Y6: Output 6
12. Y7: Output 7
13. E1: Enable Input 1
14. E2: Enable Input 2
15. VCC: Positive Power Supply
16. NC: No Connection

Functional Features

The CD74HC238PWRE4 is designed to decode three binary address inputs (A0, A1, A2) into eight mutually exclusive outputs (Y0-Y7). It can be used as a decoder or demultiplexer depending on the application requirements. The enable inputs (E1 and E2) control the operation of the device.

Advantages and Disadvantages

Advantages: - High-speed operation - Wide supply voltage range - Low power consumption - Compact TSSOP package for space-constrained applications

Disadvantages: - Limited number of address inputs (3) - Limited number of outputs (8)

Working Principles

The CD74HC238PWRE4 utilizes CMOS technology to achieve high-speed decoding and demultiplexing. When the enable inputs (E1 and E2) are active, the binary address inputs (A0-A2) are decoded to activate the corresponding output line (Y0-Y7). The selected output line goes low while all other output lines remain high.

Detailed Application Field Plans

The CD74HC238PWRE4 finds applications in various digital systems, including but not limited to: - Address decoding in microcontrollers and microprocessors - Memory selection and expansion - Data routing and multiplexing - LED matrix control - Programmable logic devices

Detailed and Complete Alternative Models

• SN74HC238N: DIP (Dual In-line Package) version of CD74HC238PWRE4
• CD54HC238F3A: Ceramic Flatpack version of CD74HC238PWRE4
• MC74HC238ADR2G: SOIC (Small Outline Integrated Circuit) version of CD74HC238PWRE4

These alternative models offer similar functionality and performance characteristics, providing flexibility in choosing the most suitable package for specific applications.

In conclusion, the CD74HC238PWRE4 is a versatile decoder/demultiplexer IC that offers high-speed operation, wide supply voltage range, and compact packaging. Its functional features, advantages, and disadvantages make it suitable for various digital applications. The detailed pin configuration, working principles, application field plans, and alternative models provide a comprehensive understanding of this integrated circuit.