NXP 74HC373D Octal D Latch IC, SOIC20, 3-State, 8-Bit

The NXP 74HC373D is a high-performance octal transparent D-type latch with 3-state outputs, designed for bus-oriented applications in industrial and consumer electronics. This integrated circuit features a latch enable (LE) input and an output enable (OE) input, providing flexible control over data flow and output states.

When the LE input is set high, the latch becomes transparent, allowing data at the D inputs to pass through to the outputs. When LE transitions low, the latch stores the data present at the inputs, ensuring stable output. The OE input, when driven high, places the outputs in a high-impedance OFF-state, which is ideal for multiplexed or shared bus systems. Importantly, the state of the latch is not affected by the OE input, allowing data to be stored independently.

The 74HC373D includes clamp diodes on all inputs, enabling the use of current-limiting resistors to interface with voltages above VCC. It supports both CMOS and TTL input levels, ensuring compatibility with a wide range of logic families. This device complies with JEDEC standard No. 7A, guaranteeing reliable performance.

Key Features

• 3-state non-inverting outputs for bus-oriented applications
• Common 3-state output enable input
• CMOS and TTL input level compatibility
• Complies with JEDEC standard No. 7A
• Propagation delay: 12ns
• Output current: 7.8mA
• Supply voltage range: 2V to 6V
• Operating temperature range: -40°C to 125°C

With its robust design and versatile features, the NXP 74HC373D is an ideal choice for applications requiring reliable data latching and bus interface capabilities.