74LVC245ABQ,115

Overview

The Nexperia 74LVC245ABQ,115 is an octal bus transceiver with 3-state outputs housed in a DHVQFN20 package (SOT764-1). It operates on a supply voltage range of 1.2 V to 3.6 V and supports input voltages up to 5.5 V. The device features Schmitt-trigger inputs for noise tolerance and IOFF circuitry for partial power-down protection. Propagation delay ranges from 1.5 ns to 8.7 ns depending on voltage and temperature.

Feature Summary

• Provides bidirectional data transmission between two buses using direction control signals.
• Includes IOFF circuitry to prevent backflow current during partial power-down states.
• Features Schmitt-trigger action at all inputs to tolerate slow rise and fall times.

Applications

• Mixed 3.3 V and 5 V environments
• Partial power-down applications
• Bus-oriented communications

Procurement Notes

Verify the specific ordering suffix matches the required package type and temperature range. Confirm that the DHVQFN20 footprint aligns with the PCB layout specifications. Ensure the application environment remains within the specified electrical limits to maintain device reliability and performance standards.

Selection Notes

Select this component when an 8-bit wide interface is required between logic families operating at different voltage levels. The DHVQFN20 package offers space efficiency for dense layouts. Verify that the system's maximum operating frequency and load capacitance requirements are compatible with the device's dynamic characteristics.

Part Context

This part belongs to the 74LVC245A family of octal bus transceivers manufactured by Nexperia. It shares functional similarities with other 245 variants but is distinguished by its LVC logic family characteristics and specific DHVQFN20 packaging. It serves as a standard solution for level translation in digital systems.

Replacement Considerations

Direct pin-compatible replacements include other 74LVC245 variants in the DHVQFN20 package, such as the 74LVCH245ABQ,115. Verify that any substitute maintains the same voltage ratings and thermal dissipation capabilities for the intended application.

FAQ

Does the 74LVC245ABQ,115 support partial power-down?

Yes, the device includes IOFF circuitry that disables the output to prevent potentially damaging backflow current when the device is powered down.

What is the function of the DIR pin?

The DIR pin controls the direction of data flow. A HIGH level sets the direction from A to B, while a LOW level sets it from B to A.