SN74LVC245APWRG4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVC245APWRG4 is an octal bus transceiver with three-state outputs manufactured by Texas Instruments. It operates from a supply voltage of 1.65 V to 3.6 V and features inputs that accept voltages up to 5.5 V, enabling mixed-mode signal operation. The device supports asynchronous communication between data buses with a maximum propagation delay of 6.3 ns at 3.3 V. It includes Ioff circuitry for partial-power-down mode and back drive protection. The component is housed in a TSSOP-20 package.

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 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 ordering suffix 'G4' corresponds to lead-free and RoHS-compliant specifications as defined in the manufacturer's documentation. Confirm the package type matches the required PCB footprint. Ensure the operating temperature range aligns with system requirements. Cross-reference the datasheet revision date to validate current electrical characteristics and pin configurations before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring bidirectional data transfer between buses operating at different voltage levels within the 1.65-V to 3.6-V range. The high drive capability makes it suitable for applications involving long PCB traces or multiple bus loads. Consider the 5.5-V input tolerance if interfacing directly with legacy 5-V logic without additional level shifting components.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LVC245A family of octal bus transceivers. It is designed for asynchronous communication between data buses. The device allows data transmission from the A bus to the B bus or vice versa based on the direction control input. It is widely used in digital logic circuits requiring reliable bus isolation and voltage translation capabilities.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVC245ADW

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle power-down conditions?

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 DIR input controls the direction of data flow. When high, data propagates from the A bus to the B bus; when low, it propagates from the B bus to the A bus.