Overview
The 74AHC595PW, produced by Nexperia USA Inc., is an 8-bit serial-in/serial or parallel-out shift register with a storage register and 3-state outputs. This device is part of the 74AHC series and is designed for use in a wide range of digital logic applications. It features separate clocks for both the shift and storage registers, enabling flexible data manipulation. The device includes a serial input (DS) and a serial output (Q7S) for cascading, as well as an asynchronous reset input (MR). The outputs are tri-state, allowing them to be set to a high-impedance OFF-state when the output enable input (OE) is HIGH.
Key Specifications
| Parameter | Value |
|---|---|
| Type Number | 74AHC595PW |
| VCC (V) | 2.0 - 5.5 |
| Logic Switching Levels | CMOS |
| Output Drive Capability (mA) | ± 8 |
| Propagation Delay (ns) | 4.0 |
| Maximum Frequency (MHz) | 170 |
| Number of Bits | 8 |
| Power Dissipation Considerations | Low |
| Operating Temperature (°C) | -40 to 125 |
| Package Name | TSSOP16 |
| Number of Pins | 16 |
| Mounting Type | Surface Mount |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | RoHS Compliant |
Key Features
- Wide Supply Voltage Range: Operates from 2.0 V to 5.5 V.
- Separate Clocks: Both the shift and storage registers have separate clocks.
- Tri-State Outputs: Outputs can be set to a high-impedance OFF-state when the output enable input (OE) is HIGH.
- Overvoltage Tolerant Inputs: Inputs are overvoltage tolerant up to 5.5 V, making it suitable for mixed voltage environments.
- High Noise Immunity: Features Schmitt-trigger action on all inputs for improved noise immunity.
- Low Power Dissipation: CMOS technology ensures low power consumption.
- ESD Protection: Offers HBM and CDM ESD protection, exceeding 2000 V and 1000 V respectively.
- Multiple Package Options: Available in various packages including TSSOP16, DHVQFN16, and SO16.
Applications
- Cache Memory in CPUs: Can be used in cache memory systems for efficient data storage and retrieval.
- Data Format Converters: Useful in converting serial data to parallel data or vice versa.
- Data Processors: Can be integrated into data processing systems for serial-to-parallel or parallel-to-serial data conversion.
- Pseudo Random Number Generators: Can be used in generating pseudo-random numbers due to its shift register capabilities.
- Remote Control Holding Registers: Suitable for applications requiring remote control of registers.
Q & A
- What is the primary function of the 74AHC595PW?
The primary function of the 74AHC595PW is to act as an 8-bit serial-in/serial or parallel-out shift register with a storage register and 3-state outputs.
- What is the operating voltage range of the 74AHC595PW?
The operating voltage range is from 2.0 V to 5.5 V.
- What type of logic switching levels does the 74AHC595PW use?
The 74AHC595PW operates with CMOS input levels.
- How many bits does the 74AHC595PW shift register have?
The shift register has 8 bits.
- What is the maximum frequency of operation for the 74AHC595PW?
The maximum frequency of operation is 170 MHz.
- What is the package type of the 74AHC595PW?
The package type is TSSOP16.
- Is the 74AHC595PW RoHS compliant?
Yes, the 74AHC595PW is RoHS compliant.
- What is the operating temperature range of the 74AHC595PW?
The operating temperature range is from -40°C to 125°C.
- Does the 74AHC595PW have ESD protection?
Yes, it offers HBM and CDM ESD protection, exceeding 2000 V and 1000 V respectively.
- What are some common applications of the 74AHC595PW?
Common applications include cache memory in CPUs, data format converters, data processors, and pseudo random number generators.
