MC74LVX245MELG

Overview

The MC74LVX245MELG is an advanced high-speed CMOS octal bus transceiver manufactured by onsemi. It facilitates two-way asynchronous communication between data buses with 5 V-tolerant inputs. The device operates within a DC supply voltage range of 2.0 V to 3.6 V and supports an operating temperature from -40°C to +85°C. Propagation delay is typically 4.7 ns at VCC = 3.3 V, with quiescent supply current maximized at 40 µA across the full temperature range.

Feature Summary

• Provides bidirectional data transmission controlled by Transmit/Receive input levels
• Features 5 V-tolerant inputs for safe interfacing with higher voltage systems
• Includes power-down protection circuits on all inputs
• Offers balanced propagation delays and low noise characteristics

Applications

• Two-way asynchronous communication between data buses
• Bus-oriented applications requiring non-inverting buffers
• Systems needing effective isolation via output enable control

Procurement Notes

Verify the specific package suffix (DW or DT) against the required footprint, as the base part number covers multiple packages. Confirm RoHS compliance status and Pb-free marking requirements for your assembly process. Check the latest datasheet revision for any updates to maximum ratings or ordering information before finalizing procurement specifications.

Selection Notes

Select this component when designing systems requiring octal bidirectional data transfer with mixed voltage domains. Ensure the application does not directly interface 5.0 V to 3.0 V systems without accounting for the parasitic diode between the bus and VCC terminals. Verify that input pins are not left floating and are properly terminated to prevent damage or undefined states.

Part Context

This device belongs to the 74LVX logic family, designed for low-voltage CMOS applications. It serves as a standard solution for bus transceivers in consumer electronics and industrial equipment where space efficiency and low power consumption are critical. The octal configuration allows for parallel data handling across wide buses.

Replacement Considerations

Check for pin-compatible alternatives such as the MC74AC245 or MC74ACT245 if higher drive current is needed, noting differences in supply voltage ranges. Verify functional equivalence with other manufacturers' 74LVX245 variants, ensuring timing parameters meet system requirements.