STMicroelectronics 74LVQ573TTR Octal D-Type Transparent Latch

The 74LVQ573TTR from STMicroelectronics is a high-performance, low-power octal D-type transparent latch designed for 2V to 3.6V VCC operation. It is part of the 74LVQ family, known for its low-voltage operation and its ability to interface with 5V logic levels, making it a perfect choice for mixed-voltage applications. This integrated circuit is particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working memory.

The 74LVQ573TTR is characterized by its transparent latch feature; the latch enables inputs (Dn) directly when the latch enable (LE) input is high. When LE is low, the data that meets the setup-time requirements on the Dn inputs is latched. The OE (Output Enable) input, when low, allows data from the latches to be outputted, and when high, it keeps the outputs in a high-impedance state, thus allowing for bus-oriented applications.

Constructed with advanced silicon gate CMOS technology, the device offers the fundamental advantage of high-speed operation while maintaining the CMOS low power dissipation. Its hysteresis at input offer enhanced noise margin while its power down protection on inputs and outputs ensures that the device is protected when powered off.

Key features of the 74LVQ573TTR include:

• High speed: tPD = 5.2ns (Max) at VCC = 3.3V
• Low power dissipation: ICC = 4µA (Max) at TA = 25°C
• Compatible with bus hold on data inputs to eliminate the need for external pull-up resistors
• Power down protection provided on inputs and outputs
• Pin and function compatible with 74 series

This device is provided in a TSSOP-20 package which minimizes PCB space requirements, and its package is specified for operation from -40°C to +85°C, ensuring reliability over a wide temperature range. The 74LVQ573TTR is an excellent choice for those looking to implement a high-speed, low-power octal latch in their digital applications.

Whether employed in modern microprocessor systems or legacy support circuits, the 74LVQ573TTR offers the performance and flexibility needed to meet the demands of a wide range of data management tasks.