ON Semiconductor 74LCX821MTC: A Low-Voltage 10-Bit D-Type Flip-Flop with 5V Tolerant Inputs/Outputs

The 74LCX821MTC is a high-performance CMOS product from ON Semiconductor, designed to meet the escalating demands for robust, low-voltage digital integration. This 10-bit D-type flip-flop is part of the LCX family, which is known for its 5V tolerant inputs and outputs, making it compatible with mixed-voltage systems. The device is particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working memory in a wide range of digital applications.

With a 2.7V to 3.6V operating voltage range, the 74LCX821MTC ensures low power consumption while maintaining high-speed operation. It is capable of functioning at a similar speed as 5V devices, which is a significant advantage for power-sensitive designs. The flip-flop's inputs can tolerate voltages up to 5V without any risk of damage, which means that it can be directly interfaced with 5V logic signals without requiring additional level shifting components.

The device features a bus-hold circuitry on each data input, which eliminates the need for external pull-up or pull-down resistors and simplifies the design process. This feature helps to maintain the last active state on the input lines when they are left floating, thus enhancing the stability of the system.

With its 24-pin TSSOP (Thin Shrink Small Outline Package), the 74LCX821MTC offers a compact footprint that is beneficial for space-constrained applications. The package is also surface-mountable, which allows for efficient assembly and integration into various electronic systems.

ON Semiconductor has designed the 74LCX821MTC with a range of protective features to ensure reliable operation. These include over-voltage tolerant inputs and outputs for interfacing with higher voltage levels, as well as power-off high impedance inputs and outputs. Additionally, the device supports live insertion and withdrawal capabilities, which means it can be added or removed from a live backplane without causing glitches on the bus.

In conclusion, the 74LCX821MTC from ON Semiconductor is a versatile and reliable choice for designers looking to incorporate a 10-bit flip-flop into their low-voltage systems, with the added benefit of 5V tolerant I/Os for mixed-voltage environment compatibility.