M74HC240RM13TR

Overview

The M74HC240RM13TR is an octal bus buffer with inverted 3-state outputs, fabricated using silicon gate C2MOS technology. It operates within a supply voltage range of 2V to 6V and features symmetrical output impedance with a minimum drive current of 6mA. The device provides high noise immunity, where both high and low noise margins are at least 28% of VCC. Propagation delay is typically 10ns at 6V, with balanced tPLH and tPHL times. Quiescent supply current is maximized at 4μA at 25°C.

Feature Summary

• Octal bus buffer architecture with three-state outputs
• Inverted logic functionality governed by dedicated control inputs
• High noise immunity characteristics across the operating voltage range
• Symmetrical output impedance for balanced signal driving

Applications

• Memory address drivers utilizing 3-state capabilities
• Bus-oriented transmissions requiring data buffering
• Clock drivers for high-speed digital systems

Procurement Notes

Verify component authenticity through official STMicroelectronics channels or authorized distributors. Confirm package integrity and pin alignment against SO-20 specifications. Review datasheet revisions for any updates to absolute maximum ratings or electrical characteristics prior to final design integration.

Selection Notes

Select this component when an octal buffer with inverted outputs and 3-state control is required. Ensure the application voltage falls between 2V and 6V. Consider the 10ns typical propagation delay for timing constraints. Verify that the SO-20 surface mount package fits the PCB layout requirements.

Part Context

This part belongs to the M74HC240 series of advanced high-speed CMOS logic devices. It is functionally compatible with standard 74 series 240 components but utilizes modern C2MOS fabrication for improved speed and lower power consumption compared to legacy equivalents.

Replacement Considerations

CD74HC240M96 (Texas Instruments)

FAQ

What is the function of the G input?

The G input acts as the output enable control. When active, it governs the four bus buffers, determining whether the outputs are in the high-impedance state or actively driving the inverted data inputs.

How does the device handle static discharge?

All inputs are equipped with protection circuits designed to withstand static discharge and transient excess voltage, enhancing reliability during handling and operation.