SN74LVC245ADBRG4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVC245ADBRG4 is an octal bus transceiver designed for 1.65-V to 3.6-V VCC operation. It facilitates asynchronous communication between data buses with a maximum propagation delay of 6.3 ns at 3.3 V. The device features inputs that accept voltages up to 5.5 V, supporting mixed-mode signal operation on all ports. 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 a 20-pin SSOP package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports bidirectional data transmission between two 8-bit buses controlled by a direction input
• Provides high-impedance isolation when the output enable input is deactivated
• Enables voltage translation from 5-V logic levels down to lower supply voltages
• Prevents damaging back-flow currents through integrated Ioff circuitry during partial power-down

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 confirms RoHS compliance and lead-free status as indicated in the manufacturer's packaging addendum. Ensure the DB package designation matches the required SSOP footprint dimensions. Confirm the operating temperature grade aligns with system requirements for industrial or extended environments.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when interfacing 5-V tolerant inputs with 1.65-V to 3.6-V powered buses. The high drive capability suits applications requiring fast edges into light loads, though routing must account for potential ringing. Verify that unused inputs are tied to valid logic levels to prevent undefined operational states.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LVC245A family of octal bus transceivers manufactured by Texas Instruments. The LVC series indicates low-voltage CMOS technology optimized for 1.65-V to 3.6-V operation. The 'A' variant typically denotes updated specifications compared to earlier generations, including improved ESD protection and latch-up performance.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVC245ADWRG4 (SOIC-20 package)

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle partial power-down conditions?

The integrated Ioff circuitry automatically disables the outputs when the device is powered down, preventing damaging current backflow through the component.

Can this transceiver interface with 5-V logic signals?

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