Overview
The SN74HC138PW, manufactured by Texas Instruments, is a high-performance CMOS logic device designed for high-speed memory decoding or data routing applications. This 3-to-8 line decoder/demultiplexer is part of the 74HC series, known for its wide operating voltage range and low power consumption. The SN74HC138PW is particularly suited for applications requiring minimal propagation delay, making it an ideal choice for embedded systems, microcontrollers, and microprocessor-based designs.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Supply Voltage | 2.0 to 6.0 | V | Wide operating range |
| Input Current | 1 | µA | Maximum |
| Output Current | ±4 | mA | At 5V |
| Propagation Delay | 15 | ns | Typical |
| Operating Temperature | -40 to 85 | °C | Industrial range |
| Package | SOIC-16 | Surface mount |
Key Features
- High-speed operation with minimal propagation delay.
- Wide operating voltage range from 2V to 6V.
- Low power consumption, with a maximum Icc of 80µA.
- Outputs can drive up to 10 LSTTL loads.
- Three enable inputs to simplify cascading or data reception.
Applications
The SN74HC138PW is widely used in various fields including LED displays, server systems, large appliances, power infrastructure, building automation, and factory automation. Its ability to efficiently decode and route data makes it a valuable component in systems requiring precise control and high-speed operation.
Q & A
What is the operating voltage range of SN74HC138PW?
The operating voltage range is from 2.0V to 6.0V.
Can SN74HC138PW drive multiple loads?
Yes, it can drive up to 10 LSTTL loads.
What is the typical propagation delay of SN74HC138PW?
The typical propagation delay is 15ns.
What are the enable inputs for in SN74HC138PW?
The enable inputs control the operation of the decoder, allowing it to be enabled or disabled as needed.
What package does SN74HC138PW come in?
It comes in an SOIC-16 package.
Is SN74HC138PW suitable for high-speed applications?
Yes, it is designed for high-speed memory decoding and data routing applications.
What is the maximum input current for SN74HC138PW?
The maximum input current is 1µA.
What is the output current capability of SN74HC138PW?
It can output ±4mA at 5V.
What temperature range can SN74HC138PW operate in?
It can operate in temperatures ranging from -40°C to 85°C.
Where is SN74HC138PW commonly used?
It is commonly used in LED displays, server systems, and various automation systems.
