SN74LV138ATRGYR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Decoder/Demultiplexer
• Characteristics:
  • Low-voltage operation
  • High-speed performance
  • Wide operating temperature range
• Package: 16-pin Thin Shrink Small Outline Package (TSSOP)
• Essence: Decodes a three-bit binary input to eight mutually exclusive outputs
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 50 MHz
• Propagation Delay Time: 6 ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74LV138ATRGYR has the following pin configuration:

1. GND (Ground)
2. A0 (Input)
3. A1 (Input)
4. A2 (Input)
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 Input)
14. E2 (Enable Input)
15. VCC (Supply Voltage)
16. GND (Ground)

Functional Features

• Decodes a three-bit binary input to one of eight mutually exclusive outputs
• Enables cascading multiple devices for larger decoding capabilities
• Low power consumption
• Schmitt-trigger inputs for noise immunity
• Compatible with various logic families

Advantages

• Wide supply voltage range allows compatibility with different systems
• High-speed operation enables efficient decoding in time-critical applications
• Low power consumption makes it suitable for battery-powered devices
• Schmitt-trigger inputs provide robustness against noise

Disadvantages

• Limited to three-bit binary input decoding, may not be suitable for complex applications requiring higher bit counts
• Only one output can be active at a time, limiting simultaneous output capabilities

Working Principles

The SN74LV138ATRGYR is a decoder/demultiplexer IC that takes a three-bit binary input and activates one of its eight outputs based on the input combination. The enable inputs (E1 and E2) control the operation of the device. When both enable inputs are high, the outputs are disabled. When either enable input is low, the outputs are enabled, and the selected output corresponds to the binary input.

Detailed Application Field Plans

The SN74LV138ATRGYR finds applications in various fields, including:

1. Address decoding in microcontrollers and microprocessors
2. Memory selection in digital systems
3. Data routing in communication systems
4. Signal demultiplexing in multimedia devices
5. Control logic in industrial automation

Detailed and Complete Alternative Models

1. 74HC138: Similar functionality with a wider supply voltage range (2V to 6V)
2. CD74HCT138: Higher speed performance with a maximum operating frequency of 74 MHz
3. SN54LS138: Compatible with TTL logic levels and wider temperature range (-55°C to +125°C)

These alternative models offer similar decoding capabilities but may have different specifications and characteristics, allowing users to choose the most suitable option for their specific requirements.

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