STMicroelectronics 74LCX74TTR Dual D-Type Positive Edge-Triggered Flip-Flop

The 74LCX74TTR from STMicroelectronics is a high-performance, dual D-type positive edge-triggered flip-flop integrated circuit that is part of the low-voltage CMOS logic family. This device is designed to operate particularly well in 3.3V systems, featuring a 5V tolerant input, which allows for interface flexibility between 5V and 3.3V systems without the need for additional level shifting. Its robust design and high-speed operation make it suitable for a wide range of applications in modern digital electronics.

Each flip-flop has independent data ('D'), set ('S'), reset ('R'), and clock ('CK') inputs, and 'Q' and 'Q̅' outputs. This configuration allows for individual control of each flip-flop, providing flexibility in various sequential logic operations. The positive-edge triggering of the clock input ensures that the state of the 'D' input is captured at the moment the clock transitions from low to high, and is then reflected at the output after the transition.

The 74LCX74TTR is characterized by its low power consumption, which is a critical attribute for battery-operated and power-sensitive applications. Additionally, the device supports a broad operating voltage range from 2.0V to 3.6V, which further enhances its compatibility with multiple logic levels and systems. The high impedance during power-down ensures no excess power is drawn, which is particularly beneficial in portable electronics where battery life is of utmost importance.

Offered in a TSSOP package, the 74LCX74TTR is optimized for enhanced heat dissipation and reduced space on printed circuit boards. This makes it ideal for use in space-constrained applications such as handheld devices, portable media players, and compact industrial controllers. Its performance is guaranteed over a -40°C to +85°C temperature range, ensuring reliability across various environmental conditions.

In summary, the STMicroelectronics 74LCX74TTR is a versatile, low-voltage, dual D-type flip-flop that offers design engineers the perfect balance between power efficiency and high-speed operation. Its 5V tolerant inputs and broad operating voltage range make it a suitable choice for interfacing with both legacy and modern digital systems, while its compact form factor is highly advantageous for space-limited applications.