74LCX543MTC

Overview

The onsemi 74LCX543MTC is an octal registered bus transceiver belonging to the 74LCX logic family. It features eight non-inverting circuits with three-state outputs in a TSSOP-24 package. The device operates within a supply voltage range of 2 V to 3.6 V and supports LVTTL or TTL input levels while providing LVCMOS output levels. Key electrical parameters include a propagation delay of 8 ns, low-level output current of 24 mA, and high-level output current of -24 mA. It functions at temperatures from -40°C to +85°C with a maximum quiescent current of 10 µA.

Feature Summary

• Octal registered bus transceiver architecture for data storage and direction control
• Three-state outputs enable direct connection to system buses without external drivers
• Compatible with LVTTL and TTL input logic levels for mixed-voltage interfacing
• Low power consumption design suitable for battery-operated applications

Applications

• Mobile phone systems
• Consumer products
• Handheld terminals
• PDA systems

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm RoHS compliance status via official documentation. Check for End-of-Life notices as manufacturing status may affect long-term availability. Ensure proper handling procedures are followed during assembly to maintain device integrity.

Selection Notes

Select this component when designing systems requiring octal data latching and bidirectional bus transfer. Consider the TSSOP-24 package constraints for PCB layout. Evaluate the 2V to 3.6V operating range against system power supplies. Verify that the 8 ns propagation delay meets timing requirements for the target application speed.

Part Context

This part belongs to the 74LCX series of low-voltage CMOS logic devices. It serves as a registered interface between microprocessors and peripheral devices. The device integrates level-shifting capabilities to bridge different logic families. It is designed for high-density packaging in portable electronic equipment.

Replacement Considerations

Check for pin-compatible alternatives within the same logic family. Verify functional equivalence regarding registered bus transceiver operations. Ensure substitute components match the TSSOP-24 package dimensions. Confirm identical electrical characteristics for voltage ranges and drive currents.