74LV245APWJ

Overview

The Nexperia 74LV245APWJ is an octal bus transceiver with 3-state outputs, housed in a TSSOP20 package (SOT360-1). It operates on a single supply voltage ranging from 2.0 V to 5.5 V. The device features Schmitt-trigger inputs for noise tolerance and overvoltage tolerant inputs up to 7.0 V. Key electrical parameters include a maximum propagation delay of 6.5 ns at 5 V. It supports mixed-mode voltage operation and includes IOFF circuitry for partial power-down applications.

Feature Summary

• Octal bidirectional bus interface with 3-state outputs controlled by OE and DIR pins
• Schmitt-trigger inputs provide tolerance for slow input rise and fall times
• IOFF circuitry prevents damaging backflow current during partial power-down states
• Overvoltage tolerant inputs allow safe interfacing in mixed voltage environments

Applications

• Mixed-mode voltage system interconnects
• Memory address and data register driving
• Bus-oriented communications systems

Procurement Notes

Verify the specific ordering suffix 'J' against the official Nexperia datasheet or manufacturer documentation. The provided source material confirms the base part number 74LV245APW but does not explicitly define the functional or environmental differences associated with the 'J' suffix. Ensure the component matches the required temperature range and package specifications before procurement.

Selection Notes

Select this component for designs requiring high-speed data transfer between buses operating at different voltage levels within the 2.0 V to 5.5 V range. The TSSOP20 package is suitable for space-constrained PCB layouts. Consider the 6.5 ns propagation delay limit when designing for high-frequency clock domains. Verify that the application does not require automotive qualification, as this product is not specified for such use.

Part Context

This device belongs to the 74LV series of low-voltage CMOS logic components manufactured by Nexperia. It functions as an 8-bit transceiver, facilitating data movement between two 8-bit buses. The LV family is characterized by wide supply voltage compatibility and high switching speeds, making it distinct from standard HC or HCT families in its low-power and high-speed performance profile.

Replacement Considerations

Direct replacements include the 74LV245A variants listed in the same datasheet, such as 74LV245AD or 74LV245APW, provided they share the identical TSSOP20 package and pinout. Cross-family substitutes like 74HC245 or 74AHCV245 may function electrically but differ in voltage ranges and speed characteristics.