MC74LCX240DTR2G

Overview

The MC74LCX240DTR2G is an octal buffer and line driver manufactured by onsemi, belonging to the LCX logic series. It features eight inverting outputs with three-state capability, housed in a 20-TSSOP surface-mount package. The device operates within a supply voltage range of 2 V to 3.6 V. Key electrical parameters include a propagation delay of 8 ns, high-level output current of -24 mA, low-level output current of 24 mA, and maximum power dissipation of 450 mW. It functions reliably across an operating temperature range from -40°C to +85°C.

Feature Summary

• Provides eight inverting buffer channels with independent three-state control for bus-oriented applications.
• Operates at low supply voltages ranging from 2 V to 3.6 V, suitable for battery-powered systems.
• Features high drive capability with ±24 mA output currents to support heavy loads.

Applications

• Memory module data buffering
• Clock distribution networks
• Portable consumer electronics

Procurement Notes

Verify component authenticity through authorized onsemi distributors or certified partners. Confirm RoHS compliance status as indicated in official datasheets. Ensure the TSSOP-20 package matches design requirements. Check for specific ordering suffixes that may affect packaging or environmental certifications before finalizing procurement orders.

Selection Notes

Select this component when designing circuits requiring low-voltage operation between 2 V and 3.6 V. The LCX series offers improved performance over older technologies while maintaining compatibility. Consider the 8 ns propagation delay and ±24 mA drive strength for signal integrity. Ensure the 20-TSSOP footprint fits the PCB layout constraints.

Part Context

This part belongs to the MC74LCX family of CMOS logic devices designed for low-voltage applications. It serves as an octal buffer with three-state outputs, distinct from the HC or HCT series which operate at higher voltages. The DTR2G suffix indicates the TSSOP-20 package and lead-free manufacturing process compliant with industry standards.

Replacement Considerations

Direct substitutes include MC74LCX240MTCX and MC74LCX240MTDX. Cross-brand alternatives such as SN74LVC240PW from Texas Instruments offer similar functionality but require verification of voltage levels and pin compatibility.