ON Semiconductor 74ACT843SCX Product Overview

The 74ACT843SCX from ON Semiconductor is a high-performance, CMOS 9-Bit Latch with 3-state outputs designed to offer both high speed and low power consumption for a wide range of digital applications. This integrated circuit is a member of the AC/ACT family, which is renowned for its robustness and versatility in handling digital signals.

Featuring a 9-bit D-type latch with transparent inputs, the 74ACT843SCX allows data to flow directly from the input to the output when the Latch Enable (LE) signal is high. When LE is low, the data that was present at the inputs at the time the transition occurred is retained at the outputs. This makes the device ideal for temporary data storage and for transferring data from one domain to another within a digital system.

The outputs of the 74ACT843SCX are 3-state, which means they can be in one of three conditions: logical high, logical low, or high impedance. The 3-state outputs allow for connection to a bus-oriented system without the risk of bus contention. The Output Enable (OE) bar controls the 3-state outputs and ensures that the outputs are in a high impedance state unless specifically driving a logic level.

Constructed with BiCMOS technology, the 74ACT843SCX offers the best of both bipolar and CMOS transistors, resulting in a device that is both fast and power-efficient. It operates over a wide voltage range of 4.5V to 5.5V, making it compatible with TTL logic levels while providing improved speed and output drive over standard CMOS logic.

The device is packaged in a 24-pin SOIC (Small Outline Integrated Circuit), making it suitable for space-constrained applications. The 74ACT843SCX is also characterized for operation from -40°C to 85°C, ensuring reliable performance across a broad range of environmental conditions.

With its combination of speed, low power consumption, and flexible 3-state outputs, the ON Semiconductor 74ACT843SCX is a strong choice for implementing latches in digital systems such as computers, communication devices, and embedded systems.