STMicroelectronics M74HC595TTR - 8-bit Shift Register

The M74HC595TTR from STMicroelectronics is a high-speed CMOS 8-bit shift register with output latches, designed to offer a robust and flexible solution for expanding the output capabilities of microcontrollers and other digital systems. This integrated circuit (IC) allows for serial-to-parallel data conversion and provides an additional 8-bit storage register with 3-state outputs.

The M74HC595TTR operates on a 2V to 6V power supply range, making it compatible with a wide array of digital systems and ensuring low power consumption. Its shift register and latch functions are controlled by separate clock inputs, with a clear input allowing for direct clearing of the register's contents. The serial output feature enables cascading of multiple devices without the need for additional circuitry, perfect for applications requiring extended data transfer and storage capabilities.

The device is available in a thin shrink small outline package (TSSOP), specifically in a 16-lead TSSOP variant, which is ideal for space-constrained applications. The M74HC595TTR's 3-state output register allows for direct driving of data lines with high-current capability, ensuring compatibility with bus-oriented systems.

Key features of the M74HC595TTR include:

• 8-bit serial input/parallel output shift register with output latches
• 3-state storage register directly drives the data bus
• Compatible with all popular logic families due to its wide operating voltage range (2V to 6V)
• High-speed performance, with a typical clock frequency of 100 MHz at 5V
• Low power consumption and high noise immunity characteristic of CMOS technology
• Multiple device cascading capability for extended data transfer
• Industrial operating temperature range from -55°C to 125°C

The M74HC595TTR is an excellent choice for applications in digital systems requiring additional output lines, such as LED displays, digital clocks, and other devices where the extension of microcontroller ports is necessary. Its ease of use, combined with high-speed operation and compatibility with existing systems, makes it a versatile component for any digital designer's toolkit.