74LCX16646MEA

Overview

The onsemi 74LCX16646MEA is a dual 8-bit registered bus transceiver utilizing advanced CMOS technology. It operates within a supply voltage range of 1.65 V to 3.6 V, ensuring compatibility with low-voltage systems. The device features independent output enable controls for each direction and includes an asynchronous reset function. Designed for surface-mount applications, it is housed in a compact SSOP-56 package. This component supports bidirectional data transfer between two buses, making it suitable for memory and I/O expansions.

Feature Summary

• Dual 8-bit architecture providing two independent bus channels
• Asynchronous reset capability for immediate data clearing
• Independent output enable control for each directional path
• Low power consumption with CMOS technology

Applications

• Memory interface circuits
• I/O expansion modules
• Bidirectional data bus buffering
• Portable electronic devices requiring low voltage operation

Procurement Notes

Verify the specific suffix 'MEA' against the manufacturer's current datasheet to confirm package type and tape/reel specifications. Ensure the design accounts for the 1.65 V to 3.6 V operating range. Check for moisture sensitivity levels if lead-free processing is required. Confirm availability status as product lifecycles may change.

Selection Notes

Select this component when a dual-channel 8-bit registered transceiver is needed for low-voltage logic interfaces. It is appropriate for designs requiring independent direction control and asynchronous reset functionality. Consider the SSOP-56 package constraints for PCB layout. Compare propagation delays and drive strength requirements against system timing budgets before finalizing the selection.

Part Context

This part belongs to the 74LCX series of high-speed CMOS logic devices. The LCX family is designed for low-voltage applications, typically interfacing between 1.65 V and 3.6 V domains. Registered bus transceivers in this series are commonly used in portable electronics and communication equipment where power efficiency and signal integrity are critical.

Replacement Considerations

Check for direct pin-compatible alternatives from other manufacturers that support the same 1.65 V to 3.6 V range and SSOP-56 package. Verify that substitute parts maintain the dual 8-bit registered configuration and independent enable controls. Ensure electrical characteristics such as propagation delay and output current meet or exceed original specifications.