74LCXR2245MSA

Overview

The onsemi 74LCXR2245MSA is an 8-bit bidirectional bus transceiver from the 74LCX family, designed for low-voltage CMOS applications. It operates within a supply voltage range of 2 V to 3.6 V and features three-state outputs. The device supports LVTTL and TTL input levels while providing LVCMOS output levels. Key electrical parameters include a propagation delay of 9.5 ns, with low-level and high-level output currents of 24 mA and -24 mA, respectively. It functions in non-inverting mode across an operating temperature range of -40°C to +85°C.

Feature Summary

• Provides bidirectional data transmission between two buses using a single direction control pin.
• Features three-state outputs that isolate the device when disabled.
• Supports mixed voltage operation by accepting LVTTL or TTL inputs with LVCMOS outputs.

Applications

• Memory mapping controllers
• Clock drivers
• Bus-oriented communications

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix 'MSA' corresponds to the SSOP-20 package variant. Check for obsolescence status as this part may be discontinued. Ensure RoHS compliance documentation matches current regulatory requirements for your region before finalizing procurement decisions.

Selection Notes

Select this component for designs requiring 8-bit bidirectional data transfer at low voltages. Ensure the system logic levels are compatible with LVTTL/TTL inputs and LVCMOS outputs. Verify that the SSOP-20 package fits the PCB layout constraints. Consider the 24 mA drive capability for load requirements and confirm the 9.5 ns delay meets timing specifications.

Part Context

This device belongs to the 74LCX series of low-voltage CMOS logic ICs manufactured by onsemi. The series is characterized by high speed and low power consumption. The 74LCXR2245 variant specifically addresses bidirectional bus applications, offering robust performance in portable and battery-operated systems where voltage efficiency is critical.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult official onsemi documentation for potential cross-references or updated replacements if this obsolete part is required.