HMC679 26 GHz, T Flip-Flop with RESET & Programmable Output Voltage

The HMC679LC3C is a T Flip-Flop w/Reset designed to support clock frequencies as high as 26 GHz. During normal operation, with the reset pin not asserted, the output toggles from its prior state on the positive edge of the clock. This results in a divide-by-two function of the clock input. Asserting the reset pin forces the Q output low regardless of the clock edge state (asynchronous reset assertion). Reversing the clock inputs allows for negative-edge triggered applications.

The HMC679LC3C also features an output level control pin, VR, which allows for loss compensation or for signal level optimization. All input signals to the HMC679LC3C are terminated with 50Ω to ground on-chip, and may be either AC or DC coupled. Outputs can be connected directly to a 50Ω terminated system, while DC blocking capacitors may be used if the terminating system is 50Ω to a non-ground DC voltage. The HMC679LC3C operates from a single -3.3V dc supply and is available in a ceramic RoHS compliant 3x3 mm SMT package.

Applications

Serial Data Transmission up to 26 Gbps
High Speed Frequency Divider (up to 26 GHz)
Broadband Test & Measurement
RF ATE Applications

Features and Benefits

Supports Clock Frequencies up to 26 GHz
Differential & Singe-Ended Operation
Fast Rise & Fall Times: 18 / 17 ps
Low Power Consumption: 270 mW typ.

Programmable Differential Output Voltage Swing: 600 - 1100 mV
Propagation Delay: 95 ps
Single Supply: -3.3V
16 Lead Ceramic 3x3mm
SMT Package: 9mm²

High Speed Logic & Data Path Management

Flip-Flops

Data Sheets

Document	note
HMC679 Data Sheet	PDF 899.62 K

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
HMC679LC3C Production	16 ld LCC (3x3mm w/1.5mm EP)	OTH 50	-40 to 85C	110.72	89.68	Y
HMC679LC3CTR Production	16 ld LCC (3x3mm w/1.5mm EP)	REEL 100	-40 to 85C	110.72	89.68	Y
HMC679LC3CTR-R5 Production	16 ld LCC (3x3mm w/1.5mm EP)	REEL 500	-40 to 85C	110.72	89.68	Y