HMC679LC3C

Overview

The HMC679LC3C is a high-speed T Flip-Flop with Reset manufactured by Analog Devices Inc. It supports clock frequencies up to 26 GHz and features programmable output voltage levels. The device operates within a supply voltage range of -3.0 V to -3.6 V, consuming typical current consistent with its series specifications. It is housed in a compact 16-lead CSMT (3x3 mm) surface-mount package. The component includes differential inputs and offers both differential and single-ended outputs for flexible integration.

Feature Summary

• Supports clock frequencies up to 26 GHz
• Integrates reset functionality for state control
• Features programmable output voltage levels
• Provides differential input and mixed output configurations

Applications

• High-speed digital clock distribution networks
• Frequency division circuits in RF systems
• Data sampling and retiming applications
• Test and measurement equipment requiring precise timing

Procurement Notes

Verify the specific revision status and lead times directly with Analog Devices or authorized distributors, as availability may vary. Confirm that the -3.3V nominal supply requirement aligns with your system design. Ensure ESD protection protocols are followed during handling due to the sensitive nature of high-frequency MMIC components.

Selection Notes

Select this component when designs require a flip-flop capable of operating at 26 GHz with integrated reset logic. Consider the programmable output voltage feature if level shifting is needed without external circuitry. Evaluate the 16-lead CSMT package size against board space constraints compared to other logic families in the HMC series.

Part Context

Part of the HMC679 series from Analog Devices, designed for millimeter-wave and high-frequency digital applications. It complements other RF logic components like the HMC729LC3C, offering similar speed capabilities but with distinct reset and output programming features tailored for complex clocking architectures.

Replacement Considerations

The HMC729LC3C is a confirmed substitute within the same family, offering 26 GHz operation and reset functionality. Verify pin compatibility and output drive requirements before substitution, as output configurations may differ slightly between revisions.