74LVC245ABZX

Overview

The Nexperia 74LVC245ABZX is an octal bus transceiver with 3-state outputs, housed in a DHXQFN20 package (SOT8020-1). It operates on a supply voltage range of 1.2 V to 3.6 V and features overvoltage tolerant inputs up to 5.5 V. The device includes IOFF circuitry for partial power-down applications, preventing damaging backflow currents. Propagation delay ranges from 1.5 ns to 16.9 ns depending on voltage, with output skew time guaranteed at 1.5 ns maximum.

Feature Summary

• IOFF circuitry enables partial power-down mode by disabling outputs to prevent backflow current
• Overvoltage tolerant inputs allow direct interfacing with 5 V devices while operating at lower voltages
• Schmitt-trigger action provides tolerance for slower input rise and fall times

Applications

• Mixed 3.3 V and 5 V environments
• Partial power-down applications
• Bus line driving

Procurement Notes

Verify the specific suffix 'ZX' against the official Nexperia ordering information table to confirm the DHXQFN20 package designation. Ensure the design accounts for the thermal characteristics and pinout defined in the SOT8020-1 outline drawing. Confirm that the application environment remains within the specified -40 °C to +125 °C temperature range for full operational validity.

Selection Notes

Select this component when an 8-bit bidirectional transceiver is required in a leadless, extreme thin quad flat package. The choice is driven by the need for space-saving PCB layouts and compatibility with low-voltage CMOS logic families. Verify that the system requires overvoltage tolerant inputs and Schmitt-trigger functionality for signal integrity.

Part Context

This part belongs to the 74LVC245A family of octal bus transceivers. It shares functional specifications with other variants like the 74LVC245AD and 74LVC245APW, differing primarily in the physical package type. The ABZ suffix specifically denotes the DHXQFN20 leadless package configuration.

Replacement Considerations

Check for other 74LVC245 variants with different packages if the DHXQFN20 footprint is unavailable. Cross-reference with equivalent parts from other manufacturers ensuring identical pinouts and electrical characteristics.