ON Semiconductor MC74LCX373MELG Octal Transparent Latch

The ON Semiconductor MC74LCX373MELG is a high-performance, octal transparent latch that combines the low power consumption of CMOS with the high-speed operation of LSTTL. This integrated circuit is designed for optimal performance in 3.3V systems but is also 5V tolerant, ensuring compatibility with mixed-voltage environments. The device is part of ON Semiconductor's LCX portfolio, which is renowned for its robust design and reliable operation under a broad range of application conditions.

Each latch within the MC74LCX373MELG has three-state outputs and can be controlled by the latch enable (LE) and output enable (OE) inputs. When LE is high, the Q outputs follow the data (D) inputs. Once LE goes low, the latches hold the information that was present at the D inputs before the transition of LE. The OE input, when low, allows the latched data to appear at the outputs. If OE is high, the outputs enter a high impedance state, which is ideal for bus-oriented applications.

The device is housed in a 20-lead SOIC package, making it suitable for space-constrained applications without compromising performance. It is characterized for operation from -40°C to +85°C, ensuring reliable functionality across a wide temperature range. This makes the MC74LCX373MELG a versatile choice for industrial, automotive, and consumer electronics where environmental conditions can vary significantly.

Key features of the MC74LCX373MELG include:

• Support for 3.3V VCC with 5V tolerant inputs
• High-speed operation equivalent to LSTTL
• Low power consumption characteristic of CMOS technology
• Bus hold data inputs eliminate the need for external pull-up resistors
• Power down high impedance inputs and outputs
• Support for live insertion and withdrawal (partial power-down mode)
• Lead-free and RoHS compliant for environmental considerations

The MC74LCX373MELG is ideal for interfacing with high-speed microprocessors without the need for current limiting resistors and can be used in a variety of applications, including memory address latching, data multiplexing, and input/output port expansion. Its robust design and flexible operation make it a reliable choice for engineers and designers looking to enhance their digital systems.