TC74ACT573P(F)

Overview

The TC74ACT573P(F) is an octal D-type latch with 3-state outputs manufactured using Toshiba's advanced high-speed CMOS C2MOS technology. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature from -40 °C to +85 °C. The device features symmetrical output impedance with a minimum drive capability of 24 mA for both high and low states, enabling the driving of 50 Ω transmission lines. Typical propagation delay is 5.5 ns at 5 V, while maximum quiescent current is 8 μA at 25 °C.

Feature Summary

• High-speed operation comparable to Bipolar Schottky TTL with low power dissipation
• Symmetrical output impedance capable of driving 50 Ω transmission lines
• Input compatibility with TTL, NMOS, and CMOS output voltage levels
• All inputs equipped with protection circuits against static discharge or transient excess voltage

Applications

• Level conversion for interfacing TTL or NMOS to High Speed CMOS
• Octal data storage in digital logic systems
• Bus interface applications requiring 3-state control

Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the base part number covers DIP, SOP, and TSSOP variants. Confirm RoHS compliance status directly with the manufacturer or authorized distributor, as environmental declarations are subject to change. Ensure the design accounts for the absolute maximum ratings, particularly regarding power dissipation derating factors when operating above 65 °C.

Selection Notes

Select this component when system requirements demand high-speed latching with TTL-compatible input thresholds. The 24 mA output drive strength makes it suitable for direct transmission line termination. Consider the 3-state output feature if bus sharing is necessary. Verify that the 4.5 V to 5.5 V supply range aligns with the target system voltage.

Part Context

This device belongs to the TC74ACT series of advanced high-speed CMOS logic ICs. It is functionally and pin-compatible with the 74F573 standard, allowing for direct replacement in existing designs requiring faster switching speeds. The product was commercially introduced in October 1988 and remains available in multiple package formats including through-hole and surface-mount options.

Replacement Considerations

The datasheet explicitly states pin and function compatibility with the 74F573. No other specific substitute part numbers are documented in the provided source material.