74HCT573DB,118

Latches Overview

The Nexperia 74HCT573DB,118 is an octal D-type transparent latch with three-state outputs. It operates within a supply voltage range of 4.5 V to 5.5 V and accepts TTL-level inputs. The device features eight data inputs (D0-D7) and corresponding outputs (Q0-Q7), controlled by Latch Enable (LE) and Output Enable (OE) signals. Propagation delay from data input to output is typically 20 ns at 4.5 V. Static current consumption is limited to 8 µA maximum. The component supports an operating temperature range from -40 °C to +125 °C.

Latches Feature Summary

• Provides eight-bit data storage with transparent mode when latch enable is active high.
• Features common three-state output enable for bus-oriented applications.
• Includes clamp diodes on inputs to allow interfacing with voltages exceeding VCC using current limiting resistors.

Latches Applications

• Input or output port interfaces for microprocessors and microcomputers
• Bus-oriented applications requiring registered data storage
• System control logic for managing parallel data transfer

Latches Procurement Notes

Verify the specific ordering suffix

Latches Selection Notes

Select this component for designs requiring TTL-compatible logic levels with CMOS performance characteristics. Ensure the application environment remains within the specified -40 °C to +125 °C temperature range. Confirm that the system power supply strictly adheres to the 4.5 V to 5.5 V limits to maintain signal integrity and prevent damage to the internal latch structures.

Latches Part Context

This part belongs to the 74HCT series of logic integrated circuits, designed for compatibility with standard TTL logic families while offering CMOS low power dissipation. The 'DB' designation indicates the SO20 plastic small outline package variant. This family is widely used in digital systems for temporary data storage and interface buffering between different logic domains.

Latches Replacement Considerations

Public confirmed substitute: 74HCT573PW,118