SN74LVC245ARGYR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVC245ARGYR is an octal bus transceiver designed for 1.65-V to 3.6-V VCC operation, facilitating asynchronous communication between data buses. It features three-state outputs and accepts input voltages up to 5.5 V, enabling mixed-mode signal operation with 5-V inputs while powered by lower supply voltages. The device supports a maximum propagation delay of 6.3 ns at 3.3 V and includes Ioff circuitry for partial-power-down mode support.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports mixed-mode signal operation allowing 5-V input/output voltage compatibility with 3.3-V VCC
• Ioff circuitry enables live insertion, partial-power-down mode, and back drive protection
• Inputs accept voltage levels up to 5.5 V regardless of the valid VCC level

Buffers, Drivers, Receivers, Transceivers Applications

• Cable modem termination systems
• Servers
• LED displays
• Network switches
• I/O expanders

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package type and moisture sensitivity level (MSL) rating during procurement. Confirm that the ordering suffix matches the required thermal and packaging specifications. Ensure compliance with RoHS directives and lead finish requirements as listed in the manufacturer's orderable addendum before finalizing component selection.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring bidirectional data transfer between buses operating at different voltage levels. It is suitable for applications needing high drive capability and fast switching speeds within low-voltage environments. Consider the VQFN-20 package constraints regarding thermal dissipation and PCB layout requirements for optimal performance.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LVC245A family of octal bus transceivers manufactured by Texas Instruments. It utilizes CMOS technology to provide balanced output drive capabilities. The device is available in multiple package options including SSOP, TVSOP, SOIC, TSSOP, and VQFN, catering to various space and thermal management needs in electronic designs.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVC245ADBR

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle power-down states?

The Ioff circuitry disables the outputs to prevent damaging current backflow through the device when it is powered down.

What is the function of the DIR input?

The direction-control (DIR) input determines the data flow direction; a high logic level transmits data from the A bus to the B bus, while a low level transmits from B to A.