74HC138PW-Q100,118

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Decoder/Demultiplexer
• Characteristics: High-speed CMOS logic, low power consumption
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: 3-to-8 line decoder/demultiplexer
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2.0V to 6.0V
• Input Voltage Range: -0.5V to VCC + 0.5V
• Output Voltage Range: -0.5V to VCC + 0.5V
• Operating Temperature Range: -40°C to +125°C
• Maximum Quiescent Supply Current: 4µA at 5.5V
• Maximum Propagation Delay: 20ns at 2.0V
• Maximum Output Current: ±25mA

Detailed Pin Configuration

The 74HC138PW-Q100,118 has a total of 16 pins. The pin configuration is as follows:

1. GND (Ground)
2. A0 (Address Input 0)
3. A1 (Address Input 1)
4. A2 (Address Input 2)
5. /G1 (Enable Input)
6. Y0 (Output 0)
7. Y1 (Output 1)
8. Y2 (Output 2)
9. Y3 (Output 3)
10. Y4 (Output 4)
11. Y5 (Output 5)
12. Y6 (Output 6)
13. Y7 (Output 7)
14. VCC (Positive Power Supply)
15. /G2A (Enable Input)
16. /G2B (Enable Input)

Functional Features

• Decodes a 3-bit binary input into one of eight outputs
• Demultiplexes a single input line to any one of eight output lines
• Active LOW enable inputs (/G1, /G2A, /G2B) for easy control
• High-speed operation with low power consumption
• Schmitt-trigger action on all inputs for improved noise immunity

Advantages and Disadvantages

Advantages: - High-speed CMOS logic allows for fast operation - Low power consumption makes it suitable for battery-powered devices - Schmitt-trigger action on inputs improves noise immunity

Disadvantages: - Limited to decoding/demultiplexing 3-bit inputs - May not be suitable for applications requiring more complex decoding

Working Principles

The 74HC138PW-Q100,118 is a 3-to-8 line decoder/demultiplexer. It takes a 3-bit binary input and selects one of the eight output lines based on the input combination. The active LOW enable inputs (/G1, /G2A, /G2B) control the operation of the decoder/demultiplexer.

When the enable inputs are at a logic HIGH level, the decoder/demultiplexer is disabled, and all output lines are in a high-impedance state. When the enable inputs are at a logic LOW level, the selected output line is activated, while all other output lines remain in a high-impedance state.

The Schmitt-trigger action on all inputs ensures reliable operation even in the presence of noise or signal distortion.

Detailed Application Field Plans

The 74HC138PW-Q100,118 can be used in various applications, including but not limited to: - Address decoding in microcontrollers and microprocessors - Memory selection in digital systems - Data routing in communication systems - Signal demultiplexing in multimedia devices - Control signal generation in industrial automation

Detailed and Complete Alternative Models

Some alternative models to the 74HC138PW-Q100,118 include: - 74LS138: TTL (Transistor-Transistor Logic) version of the decoder/demultiplexer - CD74HC138E: DIP (Dual In-line Package) version of the CMOS decoder/demultiplexer - SN74HC138N: PDIP (Plastic Dual In-line Package) version of the CMOS decoder/demultiplexer

These alternative models offer similar functionality but may differ in package type, voltage range, or other specifications.

In conclusion, the 74HC138PW-Q100,118 is a versatile 3-to-8 line decoder/demultiplexer IC. With its high-speed operation, low power consumption, and reliable performance, it finds applications in various digital systems and communication devices.