74VCX2245BQX

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74VCX2245BQX is a low-voltage bidirectional transceiver featuring eight non-inverting buffers with three-state outputs. It operates within a supply voltage range of 1.4V to 3.6V and supports I/O compatibility up to 3.6V. The device incorporates 26/58 ohm series resistors in the B port outputs to reduce line noise. Key electrical parameters include a maximum propagation delay of 8.4 ns at 1.8V, static drive currents of ±24 mA for A outputs and ±12 mA for B outputs at 3.0V, and an operating temperature range from -40°C to +85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Features patented Quiet Series circuitry designed to minimize electromagnetic interference and signal noise during switching operations.
• Includes integrated series resistors in the B port outputs to dampen signal reflections and reduce line noise in bus-oriented applications.
• Supports live insertion and withdrawal by maintaining high-impedance states for inputs and outputs when power is removed.

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address drivers
• Clock drivers
• Bus transceivers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify that the specific ordering code includes the 'X' suffix to confirm the DQFN package variant. Confirm RoHS compliance status as per JEDEC J-STD-020B standards. Ensure the design accounts for the specific current drive capabilities of the A and B ports, which differ due to internal resistance values. Check for any product change notifications regarding manufacturing updates.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring bidirectional data transfer between buses operating at low voltages. The inclusion of series resistors makes it suitable for applications where signal integrity and noise reduction are critical. Verify that the required logic levels match the CMOS input/output specifications across the target supply voltage range.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the 74VCX logic family, characterized by advanced CMOS technology for high-speed operation with low power dissipation. It is functionally similar to other octal bus transceivers but is distinguished by its specific integration of output series resistors and quiet switching features tailored for low-voltage environments.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers: None identified in source material.