ON Semiconductor MC74LCX573DT: Low Voltage CMOS Octal Latch

The MC74LCX573DT is a high-performance, octal latch integrated circuit from ON Semiconductor, designed for optimal use in low voltage and mixed 3.3V/5V applications. This device is part of the LCX family, which is characterized by its low power consumption and high speed operation. It is particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working memory in a wide range of digital systems.

The MC74LCX573DT is equipped with eight latches that can store data when the Latch Enable (LE) input is HIGH. The data is retained when LE is taken LOW. The Output Enable (OE) input controls the outputs of the latches, allowing the stored data to be presented on the outputs when OE is LOW. When OE is HIGH, the outputs are in a high impedance state, which is ideal for interfacing with bus lines in a bus-organized system.

This device is fabricated using an advanced CMOS technology to achieve superior speed-performance with the low power dissipation of CMOS circuitry. The MC74LCX573DT operates at a voltage range of 2.3V to 3.6V, which allows for lower voltage operation and interfacing with 5V logic levels without the need for additional level shifting. This makes it highly versatile for modern low voltage systems that require 5V tolerant inputs.

The MC74LCX573DT is offered in a TSSOP-20 package, which provides a compact footprint while ensuring adequate thermal performance for the device. The packaging is also RoHS compliant, adhering to environmental standards and regulations.

Key features of the MC74LCX573DT include:

• Support for 5V I/O tolerance
• High impedance glitch-free bus loading during the entire power-up and power-down cycle
• Non-busy outputs directly interface with CMOS, NMOS, and TTL
• Wide operating voltage range (V_CC = 2.3V to 3.6V)
• High-speed operation: t_PD = 3.8ns (max) at V_CC = 3.3V
• Industrial operating temperature range from -40°C to +85°C

With these features, the MC74LCX573DT from ON Semiconductor is an excellent choice for designers looking to improve signal integrity and reduce power consumption in their digital logic applications.