Overview
The SN74LS164NG4 is a high-speed 8-bit serial-in, parallel-out shift register produced by Texas Instruments. This integrated circuit is designed to receive serial data and output it in parallel, making it highly useful in applications where the number of GPIO pins on a microcontroller or microprocessor is limited. The IC features gated serial inputs, an asynchronous clear pin, and a fully buffered clock, ensuring efficient and reliable data transfer.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Operating Voltage | 4.75 to 5.25 | V |
| Propagation Delay Time | 25 | ns |
| Max. Clock Frequency | 36 | MHz |
| Operating Temperature Range | 0 to 70 | °C |
| Supply Voltage - Max | 5.25 | V |
| High Level Input Voltage | 2 to 5.25 | V |
| Low Level Input Voltage | 0 to 0.8 | V |
| High Level Output Current | -0.4 to -4 | mA |
| Low Level Output Current | 4 to 8 | mA |
| Data Setup Time | 17 | ns |
| Data Hold Time | 5 | ns |
| Clear Release Time | 30 | ns |
Key Features
- An 8-bit, parallel-out serial-in shift register
- Gated serial inputs and an asynchronous clear pin
- Fully buffered clock and serial inputs
- Operating voltage range: 4.75V to 5.25V
- Propagation delay time: 25 ns
- Maximum clock frequency: 36 MHz
- Operating temperature range: 0°C to 70°C
- Available in 14-pin PDIP, GDIP, and PDSO packages
Applications
- Counters and registers
- Arithmetic-unit registers
- Shift-left and shift-right registers
- Serial-to-parallel and parallel-to-serial conversions
- Sequence generation
- Control circuits
- Code conversion
- Expanding GPIO functionalities of microcontrollers or microprocessors
- Controlling a large number of LEDs or interfacing with LCD screens
Q & A
- What is the SN74LS164NG4?
The SN74LS164NG4 is an 8-bit serial-in, parallel-out shift register produced by Texas Instruments.
- What are the key features of the SN74LS164NG4?
Key features include gated serial inputs, an asynchronous clear pin, fully buffered clock, and an operating voltage range of 4.75V to 5.25V.
- What is the maximum clock frequency of the SN74LS164NG4?
The maximum clock frequency is 36 MHz.
- What are the typical applications of the SN74LS164NG4?
Typical applications include counters, arithmetic-unit registers, shift-left and shift-right registers, and expanding GPIO functionalities of microcontrollers or microprocessors.
- How does the asynchronous clear pin work?
The asynchronous clear pin resets the entire register to a low state regardless of the clock input.
- What are the package types available for the SN74LS164NG4?
The IC is available in 14-pin PDIP, GDIP, and PDSO packages.
- What is the operating temperature range of the SN74LS164NG4?
The operating temperature range is 0°C to 70°C.
- How does the gated serial input work?
The gated serial input allows data entry to be controlled by a logic level at the input pins, enabling or disabling the entry of new data.
- What is the propagation delay time of the SN74LS164NG4?
The propagation delay time is 25 ns.
- Can the SN74LS164NG4 be used to control LEDs or LCD screens?
Yes, it can be used to control a large number of LEDs or to interface with LCD screens by expanding the GPIO capabilities of a microcontroller or microprocessor.
