STMicroelectronics M74HC595M1R 8-bit Shift Register

The M74HC595M1R is a high-speed CMOS 8-bit shift register with output latches and an 8-bit serial-in, parallel-out shift register with a storage register from the renowned semiconductor manufacturer, STMicroelectronics. This integrated circuit (IC) is designed to be used in a wide range of applications, from microprocessor expansion, to remote control systems, and is particularly suitable for driving LEDs and other output devices due to its high current sinking capability.

Constructed with silicon gate CMOS technology, the M74HC595M1R ensures a high level of durability and performance. It operates with a supply voltage ranging from 2V to 6V, making it compatible with TTL levels and capable of interfacing with a broad spectrum of microcontrollers and digital systems. This versatility is further enhanced by the IC's ability to support a significant data transfer rate, with a clock frequency of up to 100MHz at 2V.

The device features an 8-bit serial input (DS) and an 8-bit serial or parallel output (Q0 to Q7). The shift register and storage register have separate clocks. Data is shifted on the positive-going transitions of the shift register clock (SHCP). The data in the shift register is then transferred to the storage register on a positive-going transition of the storage register clock (STCP). The eight outputs of the storage register (Q0 to Q7) are available to the user either in parallel or through a serial data output (Q7S) in the case of cascading multiple devices.

Additional features of the M74HC595M1R include an output drive capability of 6 mA, low power consumption, and the provision of both serial and parallel output modes. The device also includes a clear function, which resets the internal shift register. It is offered in a variety of packages, including SO16 and TSSOP16, ensuring flexibility in PCB design.

STMicroelectronics' commitment to quality and reliability is evident in the M74HC595M1R, making it a suitable choice for designers looking for a robust and efficient solution for serial-to-parallel data conversion.