CD74HC138QM96Q1

Product Overview

• Category: Integrated Circuit (IC)
• Use: Decoding and demultiplexing
• Characteristics: High-speed operation, low power consumption
• Package: QFN (Quad Flat No-leads)
• Essence: 3-to-8 line decoder/demultiplexer
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Supply Voltage: 2V to 6V
• Input Voltage: 0V to VCC
• Output Voltage: 0V to VCC
• Operating Temperature Range: -40°C to +125°C
• Propagation Delay Time: 13 ns (typical)
• Output Current: ±25 mA

Detailed Pin Configuration

The CD74HC138QM96Q1 has a total of 16 pins. The pin configuration is as follows:

1. GND (Ground)
2. A0 (Address input)
3. A1 (Address input)
4. A2 (Address input)
5. E1 (Enable input)
6. E2 (Enable input)
7. Y0 (Output)
8. Y1 (Output)
9. Y2 (Output)
10. Y3 (Output)
11. Y4 (Output)
12. Y5 (Output)
13. Y6 (Output)
14. Y7 (Output)
15. VCC (Positive supply voltage)
16. NC (No connection)

Functional Features

• Decodes three binary address inputs into eight mutually exclusive outputs
• Demultiplexes one of eight lines based on the input address
• High-speed operation allows for efficient data processing
• Low power consumption ensures energy efficiency

Advantages and Disadvantages

Advantages

• Compact and space-saving QFN package
• Wide operating voltage range allows for versatile applications
• Fast propagation delay time enables quick response
• High output current capability for driving external loads

Disadvantages

• Limited number of address inputs (3)
• No built-in protection features against overvoltage or short circuits

Working Principles

The CD74HC138QM96Q1 is a 3-to-8 line decoder/demultiplexer IC. It takes three binary address inputs (A0, A1, A2) and generates eight mutually exclusive outputs (Y0-Y7). The selected output line depends on the input address. The enable inputs (E1, E2) control the operation of the decoder/demultiplexer.

When the enable inputs are active (low), the decoder/demultiplexer responds to the input address and activates the corresponding output line. When the enable inputs are inactive (high), all output lines remain in a high-impedance state.

Detailed Application Field Plans

The CD74HC138QM96Q1 finds applications in various fields, including:

1. Digital electronics: Used in microcontrollers, CPUs, and digital signal processing systems for address decoding and data demultiplexing.
2. Communication systems: Enables efficient routing and selection of data packets in multiplexed communication channels.
3. Industrial automation: Facilitates control and monitoring of multiple devices by decoding address signals and activating specific outputs.
4. Automotive electronics: Integrates into automotive control units for decoding and selecting different sensor inputs or actuator outputs.

Detailed and Complete Alternative Models

1. SN74HC138N: DIP (Dual In-line Package) version of the CD74HC138QM96Q1 with similar specifications.
2. CD74HCT138E: CMOS version of the decoder/demultiplexer with TTL-compatible inputs and higher operating temperature range.
3. 74LS138: Low-power Schottky version of the decoder/demultiplexer with different power supply requirements.

(Note: This is not an exhaustive list, and there are several other alternative models available in the market.)

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