SN74LVC245ADBRE4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVC245ADBRE4 is an octal bus transceiver with 3-state outputs designed for 1.65-V to 3.6-V VCC operation. It facilitates asynchronous communication between data buses, transmitting data from the A bus to the B bus or vice versa based on the DIR input logic level. The device features inputs that accept voltages up to 5.5 V, supporting mixed-mode signal operation and down voltage translation in 3.3-V/5-V systems. It includes Ioff circuitry to disable outputs during power-down, preventing back drive current. The component operates within a temperature range of -40°C to 125°C and utilizes SSOP-20 packaging.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports live insertion, partial-power-down mode, and back drive protection via integrated Ioff circuitry
• Enables mixed-mode signal operation on all ports, allowing 5-V input/output voltage compatibility with 3.3-V VCC
• Provides high electrostatic discharge (ESD) protection exceeding JESD 22 standards

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 marking code against the orderable addendum to ensure compliance with design requirements. Confirm that the E4 suffix indicates lead-free status and RoHS compliance as specified in the manufacturer's documentation. Ensure the operating environment remains within the recommended free-air temperature range of -40°C to 125°C for optimal performance.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring asynchronous communication between data buses with mixed voltage levels. It is suitable for applications needing high drive capability and robust ESD protection. Consider the SSOP-20 package dimensions and thermal characteristics if PCB space is constrained. Verify that the supply voltage stays within the 1.65-V to 3.6-V range for proper functionality.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LVC245A family of octal bus transceivers manufactured by Texas Instruments. The 'E4' suffix denotes a lead-free product that meets RoHS standards. It is part of the broader LVC logic series, designed for low-voltage CMOS applications requiring high speed and low power consumption in portable and industrial electronics.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVC245ADBR

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle partial-power-down scenarios?

The device features Ioff circuitry that automatically disables the outputs when powered down, preventing damaging current backflow through the device.

Can this transceiver interface with 5-V logic devices?

Yes, the inputs accept voltages up to 5.5 V, allowing it to function as a translator in mixed 3.3-V/5-V system environments.