SN74LVC245ADBR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVC245ADBR is an octal bus transceiver designed for 1.65-V to 3.6-V VCC operation, facilitating asynchronous communication between data buses. It transmits data from the A bus to the B bus or vice versa based on the logic level at the direction-control (DIR) input. The output-enable (OE) input isolates the buses when disabled. Inputs accept voltages up to 5.5 V, enabling down voltage translation in mixed 3.3-V/5-V systems. The device supports partial-power-down applications via Ioff circuitry, which disables outputs to prevent damaging backflow current during power-off states.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports live insertion and partial-power-down modes through integrated Ioff circuitry that prevents damaging backflow currents.
• Enables mixed-mode signal operation by accepting input voltages up to 5.5 V while operating at lower supply voltages.
• Provides high drive capability with balanced output drive characteristics suitable for bus interface applications.

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 package type matches the SSOP-20 designation. Confirm the suffix 'DBR' indicates tape-and-reel packaging. Ensure the component meets RoHS compliance standards as specified in the manufacturer's documentation. Check for lead finish specifications such as NIPDAU if required for soldering processes.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring asynchronous data transfer between buses within a 1.65-V to 3.6-V range. It is suitable for environments needing protection against backflow currents during power cycles. Consider its ability to interface with 5-V inputs when the system operates at lower voltages. Evaluate thermal performance requirements against the junction-to-ambient resistance values provided in the datasheet.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SN74LVC245A family of octal bus transceivers manufactured by Texas Instruments. It utilizes CMOS technology to provide efficient data transmission across multiple channels. The part is designed for general-purpose digital logic applications where bidirectional data flow control is necessary. It integrates features to support modern low-voltage system architectures.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVC245ADWRG4

Buffers, Drivers, Receivers, Transceivers FAQ

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

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

Can this transceiver interface with 5-V logic signals?

Yes, the inputs can be driven from either 3.3-V or 5-V devices, allowing use as a translator in mixed 3.3-V/5-V system environments.