M74HC245RM13TR

Overview

The M74HC245RM13TR is an advanced high-speed CMOS octal bus transceiver with three-state outputs, fabricated using silicon gate C2MOS technology. It facilitates two-way asynchronous communication between data buses, with transmission direction controlled by the DIR input and device enablement managed by the G input. The component operates within a supply voltage range of 2V to 6V. Key electrical characteristics include a typical propagation delay of 10ns at 6V, symmetrical output impedance with minimum currents of 6mA, and low power dissipation with a maximum quiescent current of 4μA.

Feature Summary

• Octal bus transceiver architecture enabling bidirectional asynchronous data transfer
• Three-state outputs allowing effective isolation of buses when disabled
• Directional control via dedicated DIR input pin
• Built-in protection circuits against static discharge and transient excess voltage

Applications

• Two-way asynchronous communication between data buses
• High-speed data transmission interfaces requiring bus isolation
• Digital systems utilizing wide operating voltage ranges for signal buffering

Procurement Notes

Verify the specific package type required, as the RM13TR suffix indicates SOP-20 packaging. Confirm that the application environment remains within the specified -55°C to 125°C operating temperature range. Ensure all floating bus terminals are held HIGH or LOW during High Z states to maintain circuit stability. Check for RoHS compliance status if environmental regulations apply to the final assembly.

Selection Notes

Select this component when bidirectional data flow is necessary between two 8-bit buses. The HC logic family provides compatibility with standard 74 series logic levels while offering higher speed and lower power consumption compared to older technologies. Consider the 3-state capability for multiplexed bus architectures where multiple devices share the same data lines without interference.

Part Context

This part belongs to the M74HC245 series of octal bus transceivers manufactured by STMicroelectronics. It is functionally compatible with the industry-standard 74 Series 245 logic. The device utilizes C2MOS technology to achieve high switching speeds while maintaining low power dissipation, making it suitable for battery-powered or energy-efficient digital designs.

Replacement Considerations

Direct replacements include other manufacturers' 74HC245 variants in SOP-20 packages. Verify pinout compatibility and ensure the substitute supports the required 3-state output functionality and bidirectional data transfer capabilities.