Overview
The MC74HC595AD, produced by onsemi, is a high-performance silicon-gate CMOS 8-bit serial-input/serial or parallel-output shift register with latched 3-state outputs. This device integrates an 8-bit shift register and an 8-bit D-type latch, allowing for serial data input and both serial and parallel data output. It features independent clock inputs for the shift register and latch, as well as an asynchronous reset for the shift register. The MC74HC595AD is designed to directly interface with the SPI serial data port on CMOS MPUs and MCUs, making it versatile for various digital circuit applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| DC Supply Voltage (VCC) | –0.5 to +6.5 | V |
| DC Input Voltage (VIN) | –0.5 to VCC + 0.5 | V |
| DC Output Voltage (VOUT) | –0.5 to VCC + 0.5 | V |
| DC Input Current, per Pin (IIN) | ±20 | mA |
| DC Output Current, per Pin (IOUT) | ±35 | mA |
| DC Supply Current, VCC and GND Pins (ICC) | ±75 | mA |
| Storage Temperature (TSTG) | –65 to +150 | °C |
| Lead Temperature, 1 mm from Case for 10 Seconds (TL) | 260 | °C |
| Maximum Clock Frequency (fmax) at VCC = 2.0 to 6.0 V | 6.0 to 35 MHz | MHz |
| Propagation Delay, Shift Clock to SQH | 24 to 140 ns | ns |
Key Features
- Output Drive Capability: 15 LSTTL Loads
- Outputs directly interface to CMOS, NMOS, and TTL
- Operating Voltage Range: 2.0 to 6.0 V
- Low Input Current: 1.0 µA
- High Noise Immunity Characteristic of CMOS Devices
- In Compliance with the Requirements Defined by JEDEC Standard No. 7 A
- Independent clock inputs for shift register and latch
- Asynchronous reset for the shift register
- Three-state parallel outputs
Applications
The MC74HC595AD is suitable for a variety of applications, including:
- Microcontroller and Microprocessor Systems: Directly interfaces with SPI serial data ports.
- Digital Display Drivers: For driving LED displays, LCD displays, and other digital displays.
- Serial to Parallel Conversion: Useful in systems requiring serial data input and parallel data output.
- Automotive and Industrial Control Systems: Due to its robust noise immunity and wide operating voltage range.
- Communication Systems: For serial data transmission and reception.
Q & A
- What is the primary function of the MC74HC595AD?
The MC74HC595AD is an 8-bit serial-input/serial or parallel-output shift register with latched 3-state outputs.
- What is the operating voltage range of the MC74HC595AD?
The operating voltage range is from 2.0 to 6.0 V.
- Can the MC74HC595AD interface with TTL outputs?
- What is the maximum clock frequency for the MC74HC595AD?
The maximum clock frequency ranges from 6.0 to 35 MHz depending on the VCC voltage.
- Does the MC74HC595AD have an asynchronous reset?
- What are the typical applications of the MC74HC595AD?
- What is the propagation delay from the shift clock to the serial output (SQH)?
- How many LSTTL loads can the outputs of the MC74HC595AD drive?
- What is the storage temperature range for the MC74HC595AD?
- Is the MC74HC595AD compliant with any specific standards?
