onsemi MC74HC374ADTR2G

Introduction to the MC74HC374ADTR2G by onsemi

The MC74HC374ADTR2G is a high-performance octal (8-bit) D-type flip-flop IC manufactured by onsemi. Designed with advanced silicon-gate CMOS technology, this device is specifically tailored for engineers seeking reliable data storage and buffering capabilities in digital circuits. Packaged in a compact 20-pin TSSOP form factor measuring 0.173” (4.40mm width), the MC74HC374ADTR2G offers integration flexibility suitable for a wide range of printed circuit board layouts, making it a foundational component for digital system design in automotive, industrial, and consumer electronics.

Operational details and use cases for MC74HC374ADTR2G

The core function of the MC74HC374ADTR2G is to provide eight non-inverting D-type flip-flops with 3-state outputs, each clocked in parallel by a common clock signal. Data present at the D inputs meeting setup requirements is loaded into the internal registers upon the rising edge of the clock, facilitating synchronous operation across all bits. The device’s Output Enable input allows seamless isolation of outputs by switching all Q-outputs into the high-impedance state when enabled, ensuring robust interfacing with shared buses or other logic devices. In practical terms, this functionality is indispensable for digital data latching, temporary data storage, and bus interfacing in microprocessor, memory, and communications modules.

Main attributes and benefits of MC74HC374ADTR2G

The MC74HC374ADTR2G offers several notable performance features, including output drive capability for up to 15 LSTTL loads—an important parameter for engineers integrating the device into mixed-logic systems. Its compatibility with CMOS, NMOS, and TTL logic levels makes it versatile for a broad range of applications. Notably, the MC74HC374ADTR2G supports operation over a supply voltage range of 2.0V to 6.0V, catering to both low-voltage and standard logic environments. Its inputs exhibit low current (maximum 1.0μA), while its overall noise immunity meets JEDEC Standard No. 7A specification—a critical consideration for high-reliability industrial and automotive designs. The device is also AEC-Q100 qualified and PPAP capable, making it suitable for stringent quality and traceability standards.

Electrical specs and performance metrics of MC74HC374ADTR2G

Engineers evaluating the MC74HC374ADTR2G should note its detailed electrical profile:

DC Performance: The device achieves stable logic-level recognition and output drive even at the lower end of its voltage range, with precise input/output voltage thresholds for predictable system behavior.

AC Performance: Dynamic response is characterized by fast propagation delays and setup/hold times (consult onsemi documentation for exact specifications per operating voltage). No-load dynamic power consumption can be estimated using the formula PD = CPD × VCC² × f + ICC × VCC, which aids in component-level power budget calculations.

Timing: The MC74HC374ADTR2G guarantees reliable synchronous data transfer on clock edges, with well-defined minimum requirements for setup and hold times to support high-speed digital designs.

Structural design and packaging information for MC74HC374ADTR2G

The MC74HC374ADTR2G is delivered in a 20-lead Thin Shrink Small Outline Package (TSSOP-20), ensuring minimal PCB footprint and efficient space utilization. Key mechanical specifications adhere to industry standards (ASME Y14.5M, ANSI Y14.5M), supporting automated pick-and-place assembly. Pad dimensions and orientation should be referenced from the device specification for optimal soldering and mounting, critical for manufacturing yield and long-term reliability. The component also features clear marking for traceability (including assembly location, wafer lot, year, and week codes), facilitating robust production and inventory management.

Compliance with environmental standards and reliability of MC74HC374ADTR2G

The MC74HC374ADTR2G is fully RoHS compliant and Pb-free, aligning with prevailing environmental directives for hazardous substance reduction. Its Moisture Sensitivity Level (MSL) 1 classification indicates unlimited floor life and excellent handling robustness during board assembly. Advanced silicon-gate CMOS technology contributes to high noise immunity, and the device’s qualification per AEC-Q100 underscores its suitability for high-reliability automotive and industrial domains. ESD performance conforms to JEDEC testing standards, with the device designed for extended operational life within recommended electrical and thermal limits.

Alternative or substitute options for MC74HC374ADTR2G

When considering alternatives to the MC74HC374ADTR2G, engineers may evaluate models sharing the same logical function and package compatibility. The MC74HC374A/MC74HCT374A variants from onsemi offer different voltage and I/O level compatibilities while retaining identical pinouts. Additionally, the LS374 and HC574A/HCT574A series present compatible body structures, although they may feature differing package pin arrangements or output configurations. The HC534A/HCT534A series shares functional similarity but differs by providing inverting outputs. Selection amongst these alternatives should be based on logical in/out polarity requirements, supply voltage compatibility, speed grades, and application-specific environmental qualifications.

Conclusion

: MC74HC374ADTR2G

The MC74HC374ADTR2G octal D flip-flop from onsemi stands out as a robust and versatile solution for high-speed data latching, buffering, and bus interface tasks. Its wide voltage range, strong output drive capability, and comprehensive environmental compliance render it an ideal candidate for diverse applications across automotive, industrial, and consumer electronics sectors. By adhering to strict standards for quality and reliability, MC74HC374ADTR2G ensures dependable performance in demanding environments. Engineers and procurement professionals can rely on its well-documented electrical, mechanical, and environmental characteristics, and can confidently compare it with equivalent devices to optimize product selection for new designs or maintenance of existing platforms.