74AC74PC

Overview

The Fairchild Semiconductor 74AC74PC is a dual D-type positive edge-triggered flip-flop housed in a 14-lead plastic dual in-line package (PDIP). It features asynchronous Set and Clear inputs that operate independently of the clock signal. The device provides complementary Q and Q outputs capable of sourcing or sinking 24 mA. It operates within a supply voltage range of 2.0 V to 6.0 V, with a typical propagation delay of 13 ns at 5 V. The logic series ensures high-speed performance suitable for parallel data storage applications.

Feature Summary

• Dual D-type positive edge-triggered configuration with independent asynchronous Set and Clear controls
• Complementary outputs providing both true and inverted logic states simultaneously
• High current drive capability allowing direct interfacing with loads without additional buffering

Applications

• Parallel data storage registers
• Shift register construction
• Frequency division circuits
• Digital state retention modules

Procurement Notes

Verify the specific suffix 'PC' corresponds to the PDIP-14 package variant when ordering. Confirm manufacturer documentation matches the required operating temperature range and voltage specifications for your application environment. Ensure pinout compatibility with existing board layouts before integration.

Selection Notes

Select this component when dual independent flip-flops are required in a through-hole DIP package. Compare against 74ACT74 if TTL-compatible input thresholds are strictly necessary. Evaluate power consumption requirements as AC series devices offer reduced static power compared to older LS families while maintaining comparable speed.

Part Context

This part belongs to the 74AC family of advanced CMOS logic devices manufactured by Fairchild Semiconductor. The AC series offers significantly higher speed than standard 74HC devices while maintaining low power consumption. The 74AC74 specifically addresses designs requiring dual edge-triggered storage elements in a compact dual in-line format.

Replacement Considerations

Equivalent parts include ON Semiconductor MC74AC74PC and STMicroelectronics 74AC74P. Verify package dimensions and pin spacing compatibility when substituting. Check datasheet revisions for any changes in electrical characteristics or recommended operating conditions.