74AHC573BQ,115

Latches Overview

The Nexperia 74AHC573BQ,115 is an octal D-type transparent latch with 3-state outputs. It operates within a supply voltage range of 2.0 V to 5.5 V and features balanced propagation delays. The device includes Schmitt-trigger action on all inputs and overvoltage tolerant inputs up to 5.5 V. It provides high noise immunity and CMOS low power dissipation. The component is specified for ambient temperatures from -40 °C to +85 °C and -40 °C to +125 °C.

Latches Feature Summary

• Octal D-type transparent latch with 3-state outputs
• Overvoltage tolerant inputs to 5.5 V
• All inputs have Schmitt-trigger action
• Common 3-state output enable input

Latches Applications

• Bus-oriented applications
• Microprocessor interface
• Memory register storage

Latches Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure package compatibility and temperature range alignment. Confirm that the DHVQFN20 package dimensions match the target PCB footprint requirements. Check for any recent product change notices regarding material composition or assembly site modifications before finalizing procurement specifications.

Latches Selection Notes

Select this component when an 8-bit latch with tri-state capability is required for bus systems. Ensure the design supports the 2.0 V to 5.5 V operating range. Consider the DHVQFN20 package for space-constrained layouts. Verify that input signal levels are compatible with the CMOS logic family characteristics defined in the datasheet.

Latches Part Context

This part belongs to the 74AHC series of high-speed CMOS logic devices. It is functionally identical to the 74AHC373 and 74AHCT373 variants. The BQ suffix indicates the DHVQFN20 leadless package. The device is designed for general-purpose digital logic applications requiring reliable data latching and bus driving capabilities.

Latches Replacement Considerations

The 74AHC373BQ,115 is functionally identical. Cross-reference with other manufacturers' 74AHC573 equivalents in the DHVQFN20 package if supply constraints exist. Verify pinout and electrical parameters match exactly before substitution.

Latches FAQ

What is the function of the OE input?

A HIGH level on the OE (Output Enable) input causes the outputs to assume a high-impedance OFF-state. This operation does not affect the state stored in the internal latches.

How does the LE input control data flow?

When the LE (Latch Enable) input is HIGH, the latch is transparent, and outputs follow the inputs. When LE transitions from HIGH to LOW, the data present at the inputs is stored in the latches.

Are the inputs overvoltage tolerant?

Yes, the inputs are overvoltage tolerant to 5.5 V, allowing the device to be used as a translator in mixed voltage environments even when powered by lower voltages.