SN74LVC245APWRE4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVC245APWRE4 is an octal bus transceiver with three-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 logic level at the direction-control (DIR) input. The device features inputs that accept voltages up to 5.5 V, enabling down voltage translation in mixed 3.3-V/5-V systems. It includes Ioff circuitry to support live insertion and partial-power-down modes by disabling outputs during power-off states.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports mixed-mode signal operation on all ports, allowing 5-V input/output voltage compatibility with a 3.3-V VCC supply.
• Ioff circuitry disables outputs to prevent damaging current backflow through the device when it is powered down.
• Inputs accept voltage levels up to 5.5 V, making the device suitable for translating signals from 5-V or 3.3-V devices.

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 design requirements, as the SN74LVC245A series is available in multiple configurations including TSSOP, SSOP, SOIC, and VQFN. Confirm the specific ordering suffix corresponds to the desired reel quantity and moisture sensitivity level. Ensure the component meets RoHS compliance standards if required by the manufacturing process. Cross-reference the manufacturer's latest orderable addendum to confirm active production status and availability.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring high drive capability and balanced output drive for bus interface designs. Consider the maximum propagation delay of 6.3 ns at 3.3 V when designing for speed-sensitive paths. Ensure the system operates within the recommended supply voltage range of 1.65 V to 3.6 V. Verify that the load capacitance and trace lengths are managed to prevent ringing due to fast edges into light loads.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LVC245A family of octal bus transceivers manufactured by Texas Instruments. The 'E4' suffix indicates a lead-free finish compliant with environmental standards. The device is part of the broader LVC logic series, optimized for low-voltage CMOS applications. It shares functional similarities with other bus transceivers but is distinguished by its specific voltage tolerance and Ioff capabilities.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVC245APWRG4