Overview
The SN74HC164DRG4 is an 8-bit parallel-out serial shift register produced by Texas Instruments. This component is part of the HC logic family and is designed for a wide range of digital circuit applications. It operates over a voltage range of 2 V to 6 V, making it versatile for various system designs. The device features AND-gated serial inputs, a fully buffered clock, and a direct clear function, which enhance its functionality and ease of use in digital systems.
Key Specifications
| Parameter | Unit | Min | Nom | Max |
|---|---|---|---|---|
| Operating Supply Voltage | V | 2 | - | 6 |
| Clock Frequency | MHz | - | 25 (at 4.5 V) | 28 (at 6 V) |
| Propagation Delay Time (tpd) | ns | - | 20 | - |
| Output Drive | mA | - | ±4 (at 5 V) | - |
| Input Current | μA | - | 1 | - |
| Setup Time before CLK↑ | ns | 5 (at 2 V) | 25 (at 4.5 V) | 21 (at 6 V) |
| Hold Time, Data after CLK↑ | ns | 5 | - | - |
| Pulse Duration (CLK high or low) | ns | 100 (at 2 V) | 20 (at 4.5 V) | 18 (at 6 V) |
Key Features
- AND-gated (enable/disable) serial inputs
- Fully buffered clock and serial inputs
- Direct clear function
- Wide operating voltage range: 2 V to 6 V
- Low power consumption: 80-μA maximum
- Outputs can drive up to 10 LSTTL loads
- Positive-edge triggered clock (CLK)
- Asynchronous clear (CLR) function
Applications
The SN74HC164DRG4 is suitable for a variety of digital circuit applications, including:
- Serial-to-parallel data conversion
- Shift registers in digital systems
- Buffering and storage in digital circuits
- Control and sequencing in digital logic
- General-purpose digital logic circuits
Q & A
- What is the operating voltage range of the SN74HC164DRG4?
The operating voltage range is 2 V to 6 V. - How many bits does the SN74HC164DRG4 shift register have?
The shift register has 8 bits. - What is the typical propagation delay time (tpd) of the SN74HC164DRG4?
The typical propagation delay time is 20 ns. - What is the maximum output drive of the SN74HC164DRG4 at 5 V?
The maximum output drive is ±4 mA at 5 V. - Does the SN74HC164DRG4 have an asynchronous clear function?
Yes, it has an asynchronous clear (CLR) function. - How are the serial inputs of the SN74HC164DRG4 gated?
The serial inputs are AND-gated (enable/disable). - What is the clock trigger type of the SN74HC164DRG4?
The clock is triggered on the positive edge (rising edge) of the CLK signal. - Can the data at the serial inputs be changed while the clock is high or low?
Yes, provided the minimum setup time requirements are met. - What is the maximum input current of the SN74HC164DRG4?
The maximum input current is 1 μA. - How many LSTTL loads can the outputs of the SN74HC164DRG4 drive?
The outputs can drive up to 10 LSTTL loads.
