MC74AC240DTR2G

Overview

The MC74AC240DTR2G is an octal buffer and line driver from the onsemi AC logic series, housed in a TSSOP-20 package. It operates within a supply voltage range of 2 V to 6 V. The device features eight channels with three-state outputs and inverting polarity. Key electrical parameters include a maximum high-level output current of -24 mA and a low-level output current of 24 mA. Static current is specified at 8 uA, with a maximum operating power supply current of 80 uA. Propagation delay is 8 ns at 3.3 V and 6.5 ns at 5 V. The component supports surface mount installation and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Provides eight independent buffering channels with three-state output capability for bus-oriented systems.
• Features inverting logic polarity to facilitate signal inversion during transmission.
• Supports wide supply voltage operation ranging from 2 V to 6 V for flexible system integration.

Applications

• Bus-oriented memory and address drivers
• Clock distribution and buffering
• Multiple bus transceivers

Procurement Notes

Verify the specific ordering suffix DTR2G to confirm the tape and reel packaging format and RoHS compliance status. Ensure the procurement source provides valid manufacturer traceability documentation. Confirm that the delivered components match the MC74AC240DTR2G part number exactly to avoid substitution errors with similar variants lacking the trailing G or having different package styles.

Selection Notes

Select this component when an octal buffer with three-state control and inverting functionality is required. It is suitable for designs needing operation across a 2 V to 6 V supply range. Consider the TSSOP-20 package constraints and the 8 ns propagation delay at 3.3 V for timing analysis. Verify that the 24 mA drive current meets the load requirements of the destination circuitry.

Part Context

This component belongs to the MC74AC240 family of octal buffers and line drivers manufactured by onsemi. It utilizes CMOS technology within the AC logic series. The device is designed for high-speed applications requiring multiple buffered outputs with tri-state control. It serves as a standard interface solution for digital systems requiring signal isolation and inversion.

Replacement Considerations

MC74AC240DWG is a direct pin-compatible alternative in a SOIC-20 package. Verify package dimensions and thermal characteristics when substituting. Other members of the 74AC240 family may offer different packaging options but maintain functional equivalence.