SN74HC138PWR

Product Overview

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

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 50 MHz
• Low Power Consumption: ICC = 4µA (Max)
• High Noise Immunity: VNIH = VNIL = 28% VCC (Min)

Detailed Pin Configuration

The SN74HC138PWR 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. E1 - Enable Input 1
6. E2 - Enable Input 2
7. E3 - Enable Input 3
8. Y0 - Output 0
9. Y1 - Output 1
10. Y2 - Output 2
11. Y3 - Output 3
12. Y4 - Output 4
13. Y5 - Output 5
14. Y6 - Output 6
15. Y7 - Output 7
16. VCC - Supply Voltage

Functional Features

The SN74HC138PWR is a 3-to-8 line decoder/demultiplexer integrated circuit. It takes three address inputs (A0, A1, A2) and three enable inputs (E1, E2, E3) to generate eight outputs (Y0-Y7). The decoder/demultiplexer is used to select one of the eight output lines based on the input address. It operates at high speed and consumes low power, making it suitable for various applications.

Advantages and Disadvantages

Advantages: - High-speed operation - Low power consumption - Compact TSSOP package - Wide supply voltage range - High noise immunity

Disadvantages: - Limited number of address inputs (3) - Limited number of enable inputs (3)

Working Principles

The SN74HC138PWR works by decoding the binary address inputs (A0, A1, A2) and enabling one of the eight output lines (Y0-Y7) based on the input combination. The enable inputs (E1, E2, E3) control the operation of the decoder/demultiplexer. When the appropriate enable input is activated, the selected output line becomes active, while all other output lines remain inactive.

Detailed Application Field Plans

The SN74HC138PWR 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 logic in industrial automation

Detailed and Complete Alternative Models

Some alternative models that provide similar functionality to the SN74HC138PWR are: - 74LS138 - CD74HC138 - MC74HC138 - DM74LS138

These alternative models may have slight differences in specifications and pin configuration, but they serve the same purpose of decoding and demultiplexing signals.

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