Overview
The 74HC164PW is an 8-bit serial-in, parallel-out shift register manufactured by Nexperia USA Inc. This device is part of the 74HC series and is designed to handle serial data input and convert it into parallel output. It features two serial data inputs (DSA and DSB) and eight parallel data outputs (Q0 to Q7). The shift register operates by shifting data on the LOW-to-HIGH transitions of the clock (CP) input, and it includes an asynchronous master reset input (MR) to clear the register and set all outputs to LOW.
The 74HC164PW is known for its wide supply voltage range from 2.0 to 6.0 V, CMOS low power dissipation, and high noise immunity. It complies with JEDEC standards and is suitable for various applications across different industries.
Key Specifications
| Type number | VCC (V) | Logic switching levels | Output drive capability (mA) | tpd (ns) | fmax (MHz) | Number of bits | Power dissipation considerations | Tamb (°C) | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package name |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 74HC164PW | 2.0 - 6.0 | CMOS | ± 5.2 | 12 | 85 | 8 | low | -40 ~ 125 | 140 | 7.5 | 66 | TSSOP14 |
Key Features
- Two serial data inputs (DSA and DSB) with gated serial data inputs.
- Eight parallel data outputs (Q0 to Q7).
- Data shifted on LOW-to-HIGH transitions of the clock (CP) input.
- Asynchronous master reset input (MR) to clear the register and set all outputs to LOW.
- Inputs include clamp diodes to enable the use of current limiting resistors for interfacing with voltages in excess of VCC.
- Wide supply voltage range from 2.0 to 6.0 V.
- CMOS low power dissipation.
- High noise immunity.
- Complies with JEDEC standards (JESD8C and JESD7A).
- ESD protection: HBM exceeds 2000 V, CDM exceeds 1000 V.
Applications
The 74HC164PW is versatile and can be used in a variety of applications across different industries, including:
- Automotive systems: Especially the Q100 version, which is qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1).
- Industrial automation: For serial-to-parallel data conversion in control systems.
- Consumer electronics: In devices requiring serial data processing and parallel output.
- Mobile and wearable devices: Due to its low power dissipation and high noise immunity.
Q & A
- What is the primary function of the 74HC164PW?
The primary function is to act as an 8-bit serial-in, parallel-out shift register.
- What are the supply voltage ranges for the 74HC164PW?
The supply voltage range is from 2.0 to 6.0 V.
- What are the logic switching levels for the 74HC164PW?
The logic switching levels are CMOS for the 74HC164PW and TTL for the 74HCT164PW.
- How does the data shifting occur in the 74HC164PW?
Data is shifted on the LOW-to-HIGH transitions of the clock (CP) input.
- What is the purpose of the master reset input (MR)?
The master reset input (MR) clears the register and forces all outputs to LOW.
- What is the operating temperature range for the 74HC164PW?
The operating temperature range is from -40°C to 125°C.
- Does the 74HC164PW have ESD protection?
- What package options are available for the 74HC164PW?
The device is available in a TSSOP14 package.
- Is the 74HC164PW suitable for automotive applications?
- What are the key benefits of using the 74HC164PW in terms of power and noise immunity?
