The SNJ54ALS573CW is a high-performance, octal transparent D-type latch designed by Texas Instruments. This integrated circuit is part of the ALS (Advanced Low-Power Schottky) family, offering a perfect blend of speed and power efficiency. It is primarily used for temporary storage of data and for transferring a byte of data from the input bus to the output bus, with the added feature of 3-state outputs.

Key Features

• Logic Family: Advanced Low-Power Schottky (ALS)
• Latch Type: D-Type Transparent Latches
• Number of Latches: 8 (Octal)
• Output Type: 3-State, allowing for bus-oriented applications
• Package: Ceramic Flat (W) package for robustness and reliability
• Operating Temperature Range: Military grade, with a range of -55°C to 125°C
• Supply Voltage: 4.5V to 5.5V, compatible with standard TTL levels

Product Description

The SNJ54ALS573CW features eight D-type transparent latches with 3-state outputs. Each latch is D-type, meaning it captures the state of the data input (D) on a low-to-high transition of the clock input (CLK). The latch remains transparent as long as the latch-enable (LE) input is high, allowing data to flow from input to output. When LE is taken low, the data that was present at the D inputs at the time the transition occurred is retained at the outputs until LE is returned high.

The 3-state outputs (Q) are controlled by the output-enable (OE) input. When OE is low, the outputs are active and reflect the data stored in the latches. When OE is high, the outputs are in a high-impedance state, effectively removing the device from the bus and allowing other devices to control the bus without interference.

This device is packaged in a durable ceramic flat package, ensuring high reliability and performance even in extreme temperature conditions, making it suitable for military and aerospace applications. The SNJ54ALS573CW operates over a wide supply voltage range of 4.5V to 5.5V, making it compatible with standard TTL logic levels and ensuring ease of integration into a variety of digital systems.

With its robust design and advanced features, the SNJ54ALS573CW from Texas Instruments is an excellent choice for designers looking for a reliable latch to use in complex digital systems requiring high-speed data storage and transfer capabilities.