Overview
The 74HC595BQ,115, 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 integrated circuit is part of the 74HC/74HCT family and is designed for a wide range of applications, including automotive, industrial, power, computing, consumer, mobile, and wearables. The device features separate clocks for both the shift and storage registers, enabling flexible data transfer and output control.
Key Specifications
| Specification | Description |
|---|---|
| Type | 8-bit serial-in, serial or parallel-out shift register |
| Package | 16-pin DHVQFN (SOT763-1) |
| Input Levels | CMOS level for 74HC595, TTL level for 74HCT595 |
| Shift Out Frequency | 100 MHz (typical) |
| ESD Protection | HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V |
| Operating Temperature | -40 °C to +85 °C and -40 °C to +125 °C |
| Output State | 3-state outputs |
| Reset | Asynchronous reset (MR input) |
Key Features
- 8-bit serial input and serial or parallel output capabilities
- Storage register with 3-state outputs
- Separate clocks for shift and storage registers
- Serial input (DS) and serial output (Q7S) for cascading
- Asynchronous reset (MR input)
- Data transfer from shift register to storage register on LOW-to-HIGH transition of STCP input
- Output enable input (OE) for high-impedance OFF-state control
- Input clamp diodes for voltage protection
- Multiple package options available
Applications
The 74HC595BQ,115 is versatile and can be used in a variety of applications across different industries, including:
- Automotive systems
- Industrial control systems
- Power management systems
- Computing and data storage systems
- Consumer electronics
- Mobile and wearable devices
It is particularly useful in scenarios requiring serial-to-parallel data conversion and remote control holding registers.
Q & A
- What is the primary function of the 74HC595BQ,115?
The primary function is to act as an 8-bit serial-in, serial or parallel-out shift register with a storage register and 3-state outputs.
- What are the input levels for the 74HC595 and 74HCT595?
The 74HC595 operates at CMOS levels, while the 74HCT595 operates at TTL levels.
- What is the typical shift out frequency of the 74HC595BQ,115?
The typical shift out frequency is 100 MHz.
- How does the output enable input (OE) function?
A LOW on the OE input causes the outputs to be active, while a HIGH on OE puts the outputs in a high-impedance OFF-state.
- What is the purpose of the asynchronous reset (MR) input?
A LOW on the MR input resets the shift register.
- What type of ESD protection does the 74HC595BQ,115 offer?
The device offers HBM (Human Body Model) and CDM (Charged Device Model) ESD protection, exceeding 2000 V and 1000 V respectively.
- What are the operating temperature ranges for the 74HC595BQ,115?
The device operates from -40 °C to +85 °C and from -40 °C to +125 °C.
- Can the 74HC595BQ,115 be cascaded?
- What is the package type of the 74HC595BQ,115?
The device is packaged in a 16-pin DHVQFN (SOT763-1).
- What industries can the 74HC595BQ,115 be used in?
The device can be used in automotive, industrial, power, computing, consumer, mobile, and wearable device applications.
