Overview
The 74HC165PW/S400118 is an 8-bit parallel-in/serial-out shift register produced by NXP USA Inc. This device is part of the 74HC and 74HCT family of logic integrated circuits. It features a versatile design that allows for both parallel and serial data input and output, making it suitable for a variety of applications in digital electronics.
The device is available in a 16-pin TSSOP (Thin Shrink Small Outline Package) and operates over a wide supply voltage range from 2.0 to 6.0 volts. It is known for its low power dissipation, high noise immunity, and robust ESD protection, making it a reliable choice for various electronic systems.
Key Specifications
| Type number | VCC (V) | Logic switching levels | Output drive capability (mA) | tpd (ns) | fmax (MHz) | Number of bits | Tamb (°C) | Package name |
|---|---|---|---|---|---|---|---|---|
| 74HC165PW | 2.0 - 6.0 | CMOS | ± 5.2 | 16 | 56 | 8 | -40 to +125 | TSSOP16 (SOT403-1) |
Key Features
- Parallel or Serial Input: The device can load data either in parallel from eight inputs (D0 to D7) or serially through the DS input.
- Complementary Serial Outputs: It features two complementary serial outputs (Q7 and Q7).
- Asynchronous Parallel Load: Data from D0 to D7 is loaded into the shift register asynchronously when the parallel load input (PL) is LOW.
- Synchronous Serial Input: Data enters the register serially at DS when PL is HIGH.
- Clock Enable Input (CE): Data is shifted on the LOW-to-HIGH transitions of the CP input when CE is LOW.
- Overvoltage Tolerance: Inputs are overvoltage tolerant to 15 V, enabling use in HIGH-to-LOW level shifting applications.
- Low Power Dissipation: The device has low power dissipation, making it energy-efficient.
- High Noise Immunity: It offers high noise immunity and robust ESD protection (HBM exceeds 2000 V, MM exceeds 200 V).
- AEC-Q100 Qualified: Suitable for automotive applications, qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1).
Applications
- Automotive Systems: Qualified to AEC-Q100 standards, making it suitable for use in automotive electronics.
- Digital Signal Processing: Useful in systems requiring parallel-to-serial data conversion.
- Level Shifting Applications: Can be used in HIGH-to-LOW level shifting due to its overvoltage tolerance.
- General Digital Electronics: Applicable in various digital circuits requiring shift register functionality.
Q & A
- What is the primary function of the 74HC165PW/S400118?
The primary function is to act as an 8-bit parallel-in/serial-out shift register.
- What is the supply voltage range for this device?
The supply voltage range is from 2.0 to 6.0 volts.
- What type of logic levels does the 74HC165PW support?
The device supports CMOS logic levels.
- How many bits can the shift register hold?
The shift register can hold 8 bits of data.
- What is the maximum operating temperature for this device?
The device can operate from -40 °C to +125 °C.
- What is the package type for the 74HC165PW/S400118?
The package type is TSSOP16 (SOT403-1).
- Does the device have ESD protection?
Yes, it has robust ESD protection (HBM exceeds 2000 V, MM exceeds 200 V).
- Is the 74HC165PW/S400118 suitable for automotive applications?
Yes, it is qualified to the AEC-Q100 (Grade 1) standard for automotive use.
- How does the parallel load input (PL) affect the data loading?
When PL is LOW, data from D0 to D7 is loaded into the shift register asynchronously. When PL is HIGH, data enters the register serially at DS.
- What is the effect of the clock enable input (CE) on the CP input?
A HIGH on CE will disable the CP input, while a LOW on CE allows data to be shifted on the LOW-to-HIGH transitions of the CP input.
