SN74HCT573DBRG4 Octal Transparent D-Type Latches with 3-State Outputs

The SN74HCT573DBRG4 from Texas Instruments is an advanced high-speed CMOS octal transparent D-type latch designed for use in applications requiring the storage of information. It is a significant component in digital systems, particularly when a temporary data storage or output buffering is necessary. This device is part of the HCT family, which means it is compatible with TTL logic levels and can interface with both CMOS and LSTTL logic, providing versatile use in mixed-logic environments.

The device features eight latches with three-state outputs for bus-oriented applications. The octal transparent nature of the latches means that while the enable (LE) input is high, the Q outputs will follow the data (D) inputs. When LE is taken low, the data that was on the D inputs at the time the transition occurred is captured and held on the Q outputs. Additionally, the outputs can be placed in a high-impedance state by placing the output enable (OE) input low, effectively disconnecting the output from the bus.

Manufactured in a small-outline package, the SN74HCT573DBRG4 is designed for space-efficient applications and is optimized for low power consumption while maintaining high performance. This makes it an excellent choice for use in portable and battery-powered devices, as well as in industrial and commercial applications where power efficiency is a priority.

Key features of the SN74HCT573DBRG4 include:

• Wide operating voltage range of 4.5V to 5.5V
• High current 3-state outputs can drive up to 15 LSTTL loads
• Low power consumption, with 80 µA maximum ICC
• Typical tpd of 15 ns
• ±6 mA output drive at 5V
• Low input current of 1 µA maximum
• Direct LSTTL input logic compatibility, VIL= 0.8V Max, VIH= 2V Min

With its robust design and compatibility with various logic levels, the SN74HCT573DBRG4 is a reliable and versatile choice for designers looking to add a transparent latch to their digital logic systems. Its performance and power efficiency make it particularly well-suited for interfacing with microprocessors, memory storage, and other sophisticated electronic systems.