Overview
The SN74HC164DBR is an 8-bit parallel-out serial shift register produced by Texas Instruments. This component is part of the HC (High-Speed CMOS) logic family and is designed for use in a wide range of digital systems. It operates with a supply voltage range of 2 V to 6 V, making it versatile for various applications. The device features a serial input and parallel output configuration, allowing for efficient data transfer and processing.
Key Specifications
| Parameter | Test Conditions | Unit | Min | Max | |
|---|---|---|---|---|---|
| VCC | V | 2 | 6 | ||
| VOH (High-level output voltage) | IOH = –20 μA | V | 4.4 | 4.5 | |
| VOH (High-level output voltage) | IOH = –4 mA | V | 3.84 | 4.5 | |
| VOL (Low-level output voltage) | IOL = 20 μA | V | 0.1 | 0.1 | |
| VOL (Low-level output voltage) | IOL = 4 mA | V | 0.33 | 0.33 | |
| ICC (Quiescent current) | VI = VCC or 0, IO = 0 | μA | 80 | ||
| fCLK (Clock frequency) | TA = 25°C | MHz | 25 | 36 | |
| tsu (Setup time before CLK↑) | TA = 25°C | ns | 125 | 150 | |
| th (Hold time, data after CLK↑) | TA = 25°C | ns | 5 | 5 |
Key Features
- Wide Operating Voltage Range: The SN74HC164 operates with a supply voltage range of 2 V to 6 V, making it suitable for various digital systems.
- Serial Input and Parallel Output: The device allows for serial data input and parallel data output, facilitating efficient data transfer and processing.
- Low Power Consumption: The component has a maximum quiescent current of 80 μA, contributing to low power consumption.
- High-Speed Operation: The clock frequency can reach up to 36 MHz at 25°C, ensuring high-speed data processing.
- Asynchronous Clear: The device features an asynchronous clear (CLR) pin that sets all registers to 0 immediately when a low signal is applied.
- Positive-Edge Triggered CLK Pin: The CLK pin is triggered on a positive or rising-edge signal, allowing for synchronized data shifting.
Applications
- Digital Systems: The SN74HC164 is used in various digital systems requiring serial-to-parallel data conversion.
- Microcontrollers and Microprocessors: It can be integrated with microcontrollers and microprocessors to manage data transfer efficiently.
- Communication Systems: The component is suitable for use in communication systems that require serial data transmission and parallel data processing.
- Embedded Systems: It is often used in embedded systems where space and power efficiency are critical.
Q & A
- What is the operating voltage range of the SN74HC164?
The operating voltage range is from 2 V to 6 V.
- What is the maximum clock frequency of the SN74HC164 at 25°C?
The maximum clock frequency is 36 MHz.
- How does the asynchronous clear (CLR) pin function?
The CLR pin sets all registers to 0 immediately when a low signal is applied.
- What is the quiescent current of the SN74HC164?
The maximum quiescent current is 80 μA.
- Is the SN74HC164 triggered on a positive or negative edge of the clock signal?
The device is triggered on a positive or rising-edge signal of the clock.
- What is the setup time before the clock rises?
The setup time before CLK↑ is 125 ns to 150 ns.
- What is the hold time for data after the clock rises?
The hold time for data after CLK↑ is 5 ns.
- Can the input data be changed while the clock is high or low?
Yes, the input data can be changed while the clock is high or low, provided the minimum setup time requirements are met.
- What type of logic family does the SN74HC164 belong to?
The SN74HC164 belongs to the HC (High-Speed CMOS) logic family.
- What is the package type of the SN74HC164DBR?
The package type is SSOP-16-208mil.
