STMicroelectronics M74HC173B1R Integrated Circuit

The M74HC173B1R is a high-speed CMOS Quad D-Type Flip-Flop with clear integrated circuit manufactured by STMicroelectronics. This device is part of the HC family, which means it combines silicon-gate CMOS technology with the high-speed operation of bipolar transistors. The result is a device that operates with the low power consumption of CMOS and the high speed of bipolar transistors, making it ideal for a wide range of digital applications.

Each flip-flop in the M74HC173B1R has individual clear and clock inputs, as well as a common enable input. The device allows data at its D inputs to be transferred to the Q outputs on the positive-going edge of the clock pulse when the enable input is high. The clear input, when taken low, sets all four of the flip-flop outputs low, regardless of the other inputs' states. This feature is particularly useful for quickly resetting all flip-flops to a known state during initialization or error correction processes.

The M74HC173B1R operates over a wide voltage range from 2V to 6V and offers symmetrical output impedance with high noise immunity. These characteristics make it compatible with TTL levels and suitable for interfacing with microprocessors and other logic families. Its low power consumption and high noise immunity are key features for battery-operated and noise-sensitive electronic systems.

Typical applications for the M74HC173B1R include register and buffer storage, shift registers, and pattern generators. Its robustness and reliability are assured by the latch-up performance that exceeds 1A per JESD 78, Class II, and by the ESD protection that exceeds 2000V per MIL STD 883 Method 3015.

The M74HC173B1R is offered in a DIP16 plastic package, which is a standard through-hole mounting configuration. This packaging allows for easy integration into a variety of circuit boards and is suitable for prototyping as well as mass production environments. STMicroelectronics provides full technical support, including datasheets and application notes, to facilitate the design and development process for engineers utilizing this component in their electronic designs.