100331QCX

Overview

The Fairchild Semiconductor 100331QCX is a triple D-type flip-flop integrated circuit housed in a 28-lead Plastic Leaded Chip Carrier (PLCC) package. It contains three independent edge-triggered master/slave flip-flops with true and complement outputs, a common positive-edge clock input, and master set functionality. The device operates within a supply voltage range of -4.2V to -5.7V and supports a maximum clock frequency of 400 MHz. It is rated for an operating temperature range of 0°C to 85°C.

Feature Summary

• Contains three independent D-type flip-flops with complementary outputs
• Features a common positive-edge triggered clock input
• Includes master set functionality for asynchronous initialization

Applications

• High-speed digital data storage circuits
• Shift register implementations
• State machine logic design

Procurement Notes

Verify the manufacturer marking on the component surface against Fairchild or ON Semiconductor branding to confirm authenticity. Ensure the 28-LCC J-Lead package matches the specified footprint. Check for date codes consistent with current production standards. Confirm RoHS compliance status if required by project specifications. Validate that the part number suffix corresponds to the standard PLCC variant without special handling requirements.

Selection Notes

Select this component when designing systems requiring multiple synchronized D-type storage elements with differential outputs. The negative supply voltage requirement (-4.2V to -5.7V) necessitates appropriate power rail generation. The 400 MHz clock capability suits high-frequency applications. Consider the 28-lead PLCC package constraints for PCB layout and thermal management during integration.

Part Context

This device belongs to the family of high-speed ECL-compatible flip-flops designed for complex digital logic applications. It provides a compact solution for implementing multi-bit registers within a single surface-mount package. The triple configuration reduces board space compared to discrete single flip-flop solutions.

Replacement Considerations

Cross-reference with other Fairchild/ON Semiconductor triple D-type flip-flops in PLCC packages. Verify pin compatibility and electrical characteristics such as supply voltage and clock speed before substitution.