74AC573TTR

Latches Overview

The STMicroelectronics 74AC573TTR is an octal D-type latch with three-state non-inverted outputs, fabricated using advanced sub-micron silicon gate C2MOS technology. It operates within a supply voltage range of 2V to 6V and features balanced propagation delays with a typical tPD of 4.5ns at VCC = 5V. The device provides high noise immunity (VNIH = VNIL = 28% VCC min) and symmetrical output impedance with |IOH| = IOL = 24mA min. It includes protection circuits against static discharge offering 2kV ESD immunity and transient excess voltage tolerance.

Latches Feature Summary

• Advanced high-speed CMOS OCTAL D-TYPE LATCH with 3 STATE OUTPUTS NON INVERTING
• High noise immunity and 50Ω transmission line driving capability
• Symmetrical output impedance with balanced propagation delays
• Improved latch-up immunity and static discharge protection

Latches Applications

• Data storage in digital systems
• Buffering and bus-oriented applications
• High-speed data acquisition systems

Latches Procurement Notes

Verify the specific ordering code matches the required package type, as the 74AC573TTR designation corresponds specifically to the TSSOP-20 package variant. Confirm that the application environment remains within the recommended operating temperature range of -55°C to 125°C and the supply voltage limits of 2V to 6V. Ensure proper handling procedures are followed due to the CMOS technology used.

Latches Selection Notes

Select this component when an octal latch with three-state outputs is required for high-speed digital designs. It is suitable for applications needing low power dissipation and high noise immunity. Consider the TSSOP-20 package constraints regarding PCB space and thermal management. Verify compatibility with existing logic families if interfacing with other components.

Latches Part Context

The 74AC573 belongs to the 74AC series of high-speed CMOS logic devices. It is functionally compatible with the older 74LS573 but offers significantly faster switching speeds and lower power consumption. The 'TTR' suffix indicates the TSSOP-20 surface-mount package with tape and reel packaging, distinguishing it from DIP or SOP variants.

Latches Replacement Considerations

Direct functional replacements include other 74AC573 variants from different manufacturers, provided they meet the same electrical specifications and pinout compatibility. Ensure any substitute supports the 2V to 6V operating range and maintains similar propagation delay characteristics.