Overview
The SN74HC164APW, manufactured by Texas Instruments, is an 8-bit serial-in, parallel-out shift register designed for efficient data handling in digital circuits. This CMOS device is compatible with low-power Schottky TTL (LSTTL) and is widely used in applications requiring serial-to-parallel data conversion. Its compact TSSOP-14 package makes it suitable for space-constrained designs. The SN74HC164APW is particularly valued for its ability to simplify circuit layouts and reduce pin counts in microcontroller-based systems, making it a popular choice among electronics designers.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Logic Family | 74HC | - | High-speed CMOS |
| Number of Bits | 8 | - | Serial-in, parallel-out |
| Supply Voltage | 2.0 to 6.0 | V | Wide operating range |
| Operating Temperature | -40 to +85 | °C | Industrial grade |
| Package | TSSOP-14 | - | Surface mount |
| Clock Frequency | Up to 25 | MHz | High-speed operation |
| ESD Protection | 2000 | V | HBMEIA/JESD22-A114-B |
Key Features
- 8-bit serial-in, parallel-out operation for efficient data conversion.
- Gated serial inputs (A and B) enable precise control over data entry.
- Asynchronous master reset allows for quick initialization of the register.
- Wide supply voltage range (2.0V to 6.0V) ensures compatibility with various systems.
- High ESD protection (2000V) enhances reliability in harsh environments.
Applications
The SN74HC164APW is widely used in applications such as data communication systems, microcontroller peripheral expansion, and LED display control. Its ability to convert serial data to parallel output makes it ideal for reducing pin counts in complex designs. Additionally, it is commonly employed in timing and counting systems, where its asynchronous reset feature provides flexibility in operation. Its compact form factor and robust performance also make it suitable for consumer electronics and industrial automation.
Q & A
1. What is the function of the SN74HC164APW?
The SN74HC164APW is an 8-bit serial-in, parallel-out shift register used for converting serial data to parallel output in digital circuits.
2. What is the operating voltage range of this device?
The device operates within a voltage range of 2.0V to 6.0V.
3. Does the SN74HC164APW support asynchronous reset?
Yes, it features an asynchronous master reset for quick initialization.
4. What is the maximum clock frequency supported?
The SN74HC164APW supports clock frequencies of up to 25 MHz.
5. What package type is used for this component?
It is available in a TSSOP-14 package.
6. Is the SN74HC164APW compatible with TTL logic?
Yes, it is compatible with low-power Schottky TTL (LSTTL) logic.
7. What are the typical applications of this shift register?
It is commonly used in data communication, microcontroller peripherals, and LED display control.
8. Does the device include ESD protection?
Yes, it offers ESD protection up to 2000V.
9. Can the serial inputs be controlled independently?
Yes, the gated serial inputs (A and B) allow independent control of data entry.
10. What is the temperature range for operation?
The device operates within a temperature range of -40°C to +85°C.
