ON Semiconductor MM74HCT74SJ Dual D-Type Positive Edge-Triggered Flip-Flop

The MM74HCT74SJ from ON Semiconductor is a high-performance, dual D-type positive edge-triggered flip-flop integrated circuit that is designed to operate in a wide range of applications requiring the storage and management of binary data. This device is a member of the 74HCT family, which is known for its compatibility with high-speed CMOS logic while maintaining the ability to interface with standard TTL circuits.

Each flip-flop in the MM74HCT74SJ has independent data (D), set (S), reset (R), and clock (CLK) inputs, as well as complementary outputs (Q and Q̅). The set and reset inputs are asynchronous, allowing for immediate setting or resetting of the flip-flop independent of the clock input. The flip-flops transition on the rising edge of the clock signal, ensuring precise timing for digital circuit operations.

The device is housed in a compact surface-mount package (SOP), specifically in an SJ-type package, which is suitable for automated assembly processes and space-constrained applications. With a supply voltage range of 4.5V to 5.5V, the MM74HCT74SJ is designed to be directly interfaced with 5V TTL systems while offering the benefits of CMOS technology, such as lower power consumption and improved noise immunity.

Key features of the MM74HCT74SJ include:

• Typical operating frequency of 32MHz
• Low input current of 1µA at 25°C
• Output drive capability of 10 LSTTL loads
• High noise immunity characteristic of CMOS devices
• Low power consumption: 20µA maximum ICC

The MM74HCT74SJ is ideal for use in a variety of digital applications, including:

• Registers and counters
• Control circuits
• Memory storage devices
• Pattern generators

With its robust design and reliable performance, the MM74HCT74SJ from ON Semiconductor is an excellent choice for designers looking to implement flip-flops in their digital systems. Its compatibility with existing TTL interfaces, combined with the benefits of CMOS technology, makes it a versatile component for modern electronic designs.