HMC749LC3C
v01.1208
26 GHz, T FLIP-FLOP w/ RESET, PROGRAMMABLE
OUTPUT VOLTAGE & POSITIVE SUPPLY
Typical Applications
The HMC749LC3C is ideal for:
• Serial Data Transmission up to 26 Gbps
Features
Supports Clock Frequencies up to 26 GHz
Differential & Singe-Ended Operation
Fast Rise and 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: 9mm
2
7
HIGH SPEED LOGIC - SMT
• High Speed Frequency Divider (up to 26 GHz)
• Broadband Test & Measurement
• RF ATE Applications
Functional Diagram
General Description
The HMC749LC3C 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. The HMC749LC3C also features an
output level control pin, VR, which allows for loss
compensation or for signal level optimization.
All input signals to the HMC749LC3C are terminated
with 50Ω to Vcc on-chip, and may be either AC or DC
coupled. inputs or outputs can be connected directly
to a 50Ω Vcc terminated system, while DC blocking
capacitors may be used if the terminating system is
50Ω ground. The HMC749LC3C operates from a
single +3.3V DC supply and is available in a ceramic
RoHS compliant 3x3 mm SMT package.
Electrical Specifi cations,
T
A
= +25ºC Vcc = +3.3V
Parameter
Power Supply Voltage
Power Supply Current
Maximum Clock Rate
Input High Voltage
Input Low Voltage
Input Return Loss
Output Amplitude
Differential, peak-to-peak
Output High Voltage
Output Low Voltage
1100
3.25
2
mVpp
mV
mV
Frequency <13 GHz
Single-Ended, peak-to-peak
2.8
2.1
10
550
Conditions
Min.
3
Typ.
3.3
82
26
3.8
3.3
Max
3.6
Units
V
mA
GHz
V
V
dB
mVpp
7 - 178
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
HMC749LC3C
v01.1208
26 GHz, T FLIP-FLOP w/ RESET, PROGRAMMABLE
OUTPUT VOLTAGE & POSITIVE SUPPLY
Electrical Specifi cations,
(continued)
Parameter
Output Rise / Fall Time
Output Return Loss
Random Jitter Jr
Deterministic Jitter, Jd
Propagation Delay Clock to Q, td
Propagation Delay Reset to Q, tdr
Set Up & Hold Time, t
SH
peak-to-peak,
Conditions
Differential, 20% - 80%
Frequency <13 GHz
rms
[1]
2
15
-1
PRBS input
[2]
Min.
Typ.
18 / 17
10
Max
Units
ps
dB
0.2
2
95
125
6
ps rms
ps, pp
ps
ps
ps
7
HIGH SPEED LOGIC - SMT
[1] Upper limit of random jitter, J
R
, determined by measuring and integrating output phase noise with a sinusodal input at 5, 10, and 13.5 GHz over
temperature.
[2] TBD
DC Current vs. Supply Voltage
[1] [2]
95
90
DC CURRENT (mA)
85
80
75
70
65
2.9
Output Differential vs. Supply Voltage
[1][2]
1200
DIFFERENTIAL VOLTAGE (mV)
1150
1100
1050
1000
950
900
850
800
2.9
3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
+25C
+85C
-40C
+25C
+85C
-40C
3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
Rise / Fall Time vs. Supply Voltage
[3] [1]
25
tr (12 GHz)
tf (12 GHz)
tr (24 GHz)
tf (24 GHz)
Output Differential vs. Input Frequency
[1]
1300
1200
DIFFERENTIAL VOLTAGE (mV)
1100
1000
900
800
700
600
500
2
6
10
14
18
22
FREQUENCY (GHz)
26
30
34
+25C
+85C
-40C
23
RISE/FALL TIME (ps)
21
19
17
15
2.9
3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
SUPPLY VOLTAGE (V)
[1] VR = +3.3V
[2] Frequency = 12 GHz
[3] Frequency = 24 GHz
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
7 - 17
HMC749LC3C
v01.1208
26 GHz, T FLIP-FLOP w/ RESET, PROGRAMMABLE
OUTPUT VOLTAGE & POSITIVE SUPPLY
Output Differential vs. VR
[2]
1300
1200
DIFFERENTIAL VOLTAGE (mV)
+25C
+85C
-40C
Rise / Fall Time vs. VR
[2]
25
tr (12 GHz)
tf (12 GHz)
tr (24 GHz)
tf (24 GHz)
1000
900
800
700
600
500
2.1
2.3
2.5
2.7
2.9
VR (V)
3.1
3.3
3.5
3.7
RISE/FALL TIME (ps)
7
HIGH SPEED LOGIC - SMT
1100
23
21
19
17
15
2.1
2.3
2.5
2.7
2.9
VR (V)
3.1
3.3
3.5
3.7
Input Return Loss vs. Frequency
0
-5
-10
Output Return Loss vs. Frequency
0
-5
RETURN LOSS (dB)
-10
-15
-20
-25
-30
RETURN LOSS (dB)
-15
-20
-25
-30
-35
-40
0
5
10
15
FREQUENCY (GHz)
20
25
0
2
4
6
8
10
12
14
FREQUENCY (GHz)
[1] VR = 3.3V
[2] Frequency = 12 GHz
[3] Frequency = 24 GHz
7 - 180
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
HMC749LC3C
v01.1208
26 GHz, T FLIP-FLOP w/ RESET, PROGRAMMABLE
OUTPUT VOLTAGE & POSITIVE SUPPLY
Output Waveform
[1] Test Conditions:
Waveform generated with a CW signal source input at 24 GHz.
Diagram data presented on a Tektronix CSA 8000.
Device is AC coupled to scope.
7
HIGH SPEED LOGIC - SMT
Timing Diagram
Truth Table
R
0
0
1
1
Notes:
R= RP - RN
CK = CP - CN
Q = QP - QN
CK
L --> H
L --> H
X
X
Q
0
1
0
1
Q Next
1
0
0 (ASYNC)
0 (ASYNC)
H - Negative voltage level
L - Positive voltage level
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
7 - 18
HMC749LC3C
v01.1208
26 GHz, T FLIP-FLOP w/ RESET, PROGRAMMABLE
OUTPUT VOLTAGE & POSITIVE SUPPLY
Absolute Maximum Ratings
Power Supply Voltage (Vcc)
Input Signals
Output Signals
-0.5V to +3.7V
Vcc - 2V to Vcc + 0.5V
+1V to +3.7V
-65°C to +150°C
-40°C to +85°C
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
7
HIGH SPEED LOGIC - SMT
Storage Temperature
Operating Temperature
Outline Drawing
NOTES:
1. PACKAGE BODY MATERIAL: ALUMINA
2. LEAD AND GROUND PADDLE PLATING:
30-80 MICROINCHES GOLD OVER 50 MICROINCHES MINIMUM NICKEL.
3. DIMENSIONS ARE IN INCHES [MILLIMETERS].
4. LEAD SPACING TOLERANCE IS NON-CUMULATIVE.
5. PACKAGE WARP SHALL NOT EXCEED 0.05mm DATUM -C-
6. ALL GROUND LEADS MUST BE SOLDERED TO PCB RF GROUND.
7. PADDLE MUST BE SOLDERED TO GND.
7 - 182
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
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