Overview
The SN74HC164DRG3 is an 8-bit parallel-out serial shift register produced by Texas Instruments. This component is part of the HC series, known for its high-speed CMOS logic and wide operating voltage range. It is designed to shift data serially into the device and present the data in parallel at the output. The device features a buffered clock and serial inputs, making it suitable for various digital circuit applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 2 | 5 | 6 | V |
| Clock Frequency (fclock) | 25 | - | 36 | MHz |
| Propagation Delay Time (tpd) | 20 | - | 35 | ns |
| Output Drive | - | - | ±4 mA | - |
| Input Current | - | - | 1 μA | - |
| Power Consumption (ICC) | - | - | 80 μA | - |
| Setup Time Before CLK↑ (tsu) | 125 | - | 150 | ns |
| Hold Time, Data After CLK↑ (th) | 5 | - | 5 | ns |
Key Features
- Wide operating voltage range: 2 V to 6 V
- Buffered clock and serial inputs
- AND-gated (enable/disable) serial inputs
- Direct clear input (CLR)
- Low power consumption: maximum 80 μA
- Outputs can drive up to 10 LSTTL loads
- Typical propagation delay time of 20 ns
Applications
The SN74HC164DRG3 is versatile and can be used in a variety of digital circuits, including:
- Serial-to-parallel data conversion
- Shift registers in digital counters and timers
- Data storage and retrieval systems
- Digital signal processing circuits
- Microcontroller and microprocessor interfaces
Q & A
- What is the operating voltage range of the SN74HC164DRG3?
The operating voltage range is from 2 V to 6 V. - What is the maximum clock frequency for the SN74HC164DRG3?
The maximum clock frequency is 36 MHz. - How much power does the SN74HC164DRG3 consume?
The maximum power consumption is 80 μA. - What is the propagation delay time of the SN74HC164DRG3?
The typical propagation delay time is 20 ns. - Can the outputs of the SN74HC164DRG3 drive multiple loads?
Yes, the outputs can drive up to 10 LSTTL loads. - How does the clock input work on the SN74HC164DRG3?
The clock input is triggered on the rising edge of the clock waveform. - Is there an asynchronous clear function on the SN74HC164DRG3?
Yes, there is a direct clear input (CLR) that sets all registers to 0 immediately when a low signal is applied. - Can data be changed while the clock is high or low?
Yes, data at the serial inputs can be changed while CLK is high or low, provided the minimum set-up time requirements are met. - What is the setup time before the clock rising edge?
The setup time before the clock rising edge (tsu) is between 125 ns and 150 ns. - What is the hold time for data after the clock rising edge?
The hold time for data after the clock rising edge (th) is 5 ns.
