ON Semiconductor 74LCX373SJ: Octal Transparent Latch

The 74LCX373SJ is a high-performance CMOS octal transparent latch designed to meet the requirements of high-speed memory decoders and data transmission systems. Manufactured by ON Semiconductor, a leader in the semiconductor industry, the 74LCX373SJ is part of the LCX family of products known for their low voltage operation and significantly reduced power consumption.

This device features eight latches with three-state outputs for bus-oriented applications. The 74LCX373SJ is characterized by its ability to operate at a low voltage range of 2.3V to 3.6V, which makes it suitable for interfacing with 3.3V logic levels while maintaining 5V tolerant inputs. This tolerance allows for mixed-voltage system integration, which is critical in transitioning environments where both 3.3V and 5V logic circuits coexist.

The 74LCX373SJ is equipped with an OE (Output Enable) bar that controls the transparent latches and determines the state of the outputs. When the OE bar is low, the latches are transparent, allowing data from the inputs to flow through to the outputs. However, when the OE bar is high, the outputs are in a high impedance state, effectively isolating the latches from the bus.

One of the key features of the 74LCX373SJ is its 5V tolerant inputs, which ensure that the device is protected from potential damage due to higher voltage levels. Additionally, the latch incorporates bus-hold circuitry on its inputs, eliminating the need for external pull-up or pull-down resistors and ensuring that the inputs remain at a valid logic level when open.

ON Semiconductor's 74LCX373SJ comes in a 20-lead small-outline package, making it compact and suitable for space-constrained applications. Its performance is optimized for operating at temperatures ranging from -40°C to +85°C, ensuring reliability and stability across a wide range of environmental conditions.

Overall, the 74LCX373SJ from ON Semiconductor is an excellent choice for designers looking for a low-voltage, power-efficient octal latch that does not compromise on speed or performance. Whether used in memory buffer applications or as an interface between mismatched voltage systems, the 74LCX373SJ delivers consistent, high-quality performance.