MC74ACT240DTR2G

Overview

The MC74ACT240DTR2G is an octal buffer and line driver from the 74ACT logic series, manufactured by onsemi. It features eight inverting inputs with three-state outputs, housed in a TSSOP-20 surface-mount package. The device operates within a supply voltage range of 4.5 V to 5.5 V. Key electrical parameters include a high-level output current of -24 mA and a low-level output current of 24 mA. Propagation delay is specified at 11 ns. Quiescent current is 8 µA, with a maximum power dissipation of 200 mW. It functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Provides octal buffering with inverting logic functionality for signal integrity maintenance.
• Integrates three-state output control to facilitate bus-oriented communication systems.
• Utilizes CMOS technology to ensure low static power consumption during operation.

Applications

• Bus-oriented memory and address drivers
• Clock drivers and buffer circuits
• Transceiver buses for data transmission

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status via official documentation. Ensure the TSSOP-20 package matches design requirements. Check for obsolete status notifications as availability may be limited. Validate datasheet revisions against specific project timing constraints.

Selection Notes

Select this component for applications requiring octal buffering with three-state capability at 5V logic levels. Compare propagation delays and drive currents against system timing budgets. Consider the TSSOP-20 package size for PCB layout constraints. Evaluate thermal performance given the 200 mW power dissipation limit. Verify compatibility with existing 74ACT family designs.

Part Context

This part belongs to the MC74ACT240 series of octal buffers and line drivers. It is designed for high-speed digital applications requiring robust signal driving capabilities. The device is part of onsemi's broader 74ACT logic portfolio, offering compatibility with standard TTL and CMOS interfaces while providing improved speed over older AC families.

Replacement Considerations

The MC74ACT240DTR2G is listed as obsolete. Available substitutes include parametric equivalents such as the 74ACT240MTC from onsemi. Verify pinout and electrical specifications before substitution.