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74VHCT138A from FAI,Fairchild Semiconductor

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74VHCT138A

Manufacturer: FAI

3-to-8 Decoder/Demultiplexer

Partnumber Manufacturer Quantity Availability
74VHCT138A FAI 48 In Stock

Description and Introduction

3-to-8 Decoder/Demultiplexer The 74VHCT138A is a high-speed CMOS logic device manufactured by various companies, including Fairchild Semiconductor, ON Semiconductor, and others. It is a 3-to-8 line decoder/demultiplexer with inverting outputs. The device is designed to operate within a voltage range of 4.5V to 5.5V and is compatible with TTL levels.

Key specifications include:
- Supply Voltage (VCC): 4.5V to 5.5V
- Input Voltage (VI): 0V to VCC
- Operating Temperature Range: -40°C to +85°C
- Propagation Delay: Typically 7.5 ns at 5V
- Output Current: ±8 mA
- Power Dissipation: 500 mW (max)

The 74VHCT138A is available in various packages, including SOIC, TSSOP, and PDIP. It is commonly used in applications requiring high-speed decoding and demultiplexing, such as in memory address decoding and data routing in digital systems.

For FAI (First Article Inspection) specifications, the manufacturer typically provides detailed electrical and mechanical characteristics, including:
- Input/output voltage levels
- Timing parameters
- Package dimensions and tolerances
- Pin configuration and marking
- Environmental and reliability data (e.g., ESD protection, latch-up immunity)

Exact FAI specifications should be obtained from the manufacturer's datasheet or quality documentation for the specific lot or batch of parts.

Partnumber Manufacturer Quantity Availability
74VHCT138A FAIRCHILD 630 In Stock

Description and Introduction

3-to-8 Decoder/Demultiplexer The 74VHCT138A is a high-speed CMOS logic device manufactured by Fairchild Semiconductor. It is a 3-to-8 line decoder/demultiplexer with inverting outputs. Key specifications include:

- **Supply Voltage (VCC):** 4.5V to 5.5V
- **High-Speed Operation:** Typical propagation delay of 6.5 ns at 5V
- **Low Power Consumption:** Typical ICC of 4 µA at 25°C
- **Input Compatibility:** TTL levels, with a minimum high-level input voltage (VIH) of 2V and a maximum low-level input voltage (VIL) of 0.8V
- **Output Drive Capability:** Can drive up to 8 LS-TTL loads
- **Operating Temperature Range:** -40°C to +85°C
- **Package Options:** Available in various packages, including SOIC, TSSOP, and PDIP

The device features three enable inputs (two active LOW and one active HIGH) to simplify cascading and reduce the need for external gates. It is designed for high-speed, low-power applications in digital systems.

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