74AC273MTCX

Overview

The onsemi 74AC273MTCX is an octal D-type flip-flop housed in a 20-TSSOP surface-mount package. It features eight edge-triggered D flip-flops with individual D inputs and Q outputs, sharing common buffered Clock (CP) and Master Reset (MR) inputs for simultaneous loading and resetting. The device operates within a supply voltage range of 2 V to 6 V, providing high output drive capabilities with source/sink currents of 24 mA. It exhibits a propagation delay of 18 ns at 5 V with 50 pF load capacitance and supports clock frequencies up to 110 MHz. The component functions across a temperature range of -40°C to +85°C.

Feature Summary

• Integrates eight edge-triggered D-type flip-flops with independent data inputs and true outputs.
• Includes buffered common clock and asynchronous master reset inputs for synchronized control.
• Delivers high current drive capability with 24 mA source and sink output capacity.

Applications

• Buffering signals for MOS microprocessor systems
• Data storage interfaces for memory modules
• General-purpose parallel-to-serial conversion circuits

Procurement Notes

Verify the specific suffix 'MTCX' against official datasheets to confirm the TSSOP-20 package and tape-and-reel packaging configuration. Ensure compatibility with RoHS compliance requirements and check for any recent Product Change Notifications regarding assembly or material updates. Confirm that the operating voltage and temperature ranges align with your system design specifications before finalizing procurement.

Selection Notes

Select this component when high-speed octal latching with strong drive capability is required. The AC series offers faster performance than HC variants but requires careful attention to power supply decoupling due to higher peak currents. Consider the 74ACT273 if TTL-compatible input thresholds are necessary instead of standard CMOS levels. Evaluate thermal management needs given the 24 mA output drive potential in dense PCB layouts.

Part Context

This part belongs to the 74AC logic family, designed for high-speed applications requiring robust output drive. It serves as a core memory element in digital systems, enabling the capture and retention of parallel data streams. The TSSOP-20 package provides a compact solution for space-constrained designs while maintaining electrical performance suitable for modern processor and memory bus architectures.

Replacement Considerations

Public confirmed substitutes include MC74AC273DTR2G and MC74AC273DTR2 from onsemi. Cross-manufacturer equivalents such as NXP 74AC273 or TI SN74AC273 may be considered if pinout and electrical specifications match exactly. Verify package type and lead finish compatibility during substitution.