HMC679LC3C Datasheet, PDF (1/8 Pages) Hittite Microwave Corporation – 26 GHz, T FLIP-FLOP w/ RESET & PROGRAMMABLE OUTPUT VOLTAGE

HMC679LC3C
v05.1010
26 GHz, T FLIP-FLOP w/ RESET &
PROGRAMMABLE OUTPUT VOLTAGE
3
3-1
Typical Applications
The HMC679LC3C is ideal for:
• Serial Data Transmission up to 26 Gbps
• High Speed Frequency Divider (up to 26 GHz)
• Broadband Test & Measurement
• RF ATE Applications
Features
Supports Clock Frequencies up to 26 GHz
Differential or Single-Ended Operation
Fast Rise and Fall Times: 18 / 17 ps
Low Power Consumption: 270 mW typ.
Programmable Differential Output Voltage Swing:
600 - 1100 mVp-p
Propagation Delay: 95 ps
Single Supply: -3.3 V
16 Lead Ceramic 3 x 3 mm SMT Package: 9 mm²
Functional Diagram
General Description
The HMC679LC3C is a T Flip-Flop w/Reset desig-
ned 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.
All differential inputs to the HMC679LC3C are CML and
terminated on-chip with 50 Ohms to the positive supply,
GND, and may be DC or AC coupled. Outputs can be
connected directly to a 50 Ohm ground-terminated
system or drive devices with CML logic input. The
HMC679LC3C also features an ouput level control pin,
VR, which allows for loss compensation or signal level
optimization. The HMC679LC3C operates from a single
-3.3 V supply and is available in ROHS-compliant 3x3
mm SMT package.
Electrical Specifications, TA = +25 ºC, Vee = -3.3 V, VR = 0 V
Parameter
Power Supply Voltage
Power Supply Current
Conditions
Min.
-3.6
Maximum Clock Rate
Input Voltage Range
Input Differential Range
Input Return Loss
-1.5
0.1
Frequency <23 GHz
Output Amplitude
Output High Voltage
Single-Ended, peak-to-peak
Differential, peak-to-peak
Output Low Voltage
Typ.
-3.3
82
26
10
550
1100
-10
-560
Max
Units
-3.0
V
mA
GHz
0.5
V
2.0
Vp-p
dB
mVp-p
mVp-p
mV
mV
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: [phone] Fax: [phone] Order On-line at www.hittite.com
Application Support: Phone: [phone] or [e-mail]