Differential LVDS Crystal Clock Oscillators LVDS Outputs
3HDF5761 Series +3.3V, “F” family
MERCURY
Since 1973
3HDF5761 products feature 0.4 ps typical phase jitter and
low phase noise (-132 dBc at 10 KHz for 155.520 MHz).
Differential LVDS Outputs meet the requirements for
SONET, XDSL and other communication protocols.
General Specifications
Product Series
Frequency Range
Output Logic
3HDF5761 ; “F” family. Tri-State on pad 1
38 MHz ~ 640 MHz.
Differential LVDS 100 K square wave
Commercial “ C ”::
-10°C to +70°C
Industrial “ I ”:
-40°C to +85°C
Stability Code
±25 ppm
±50 ppm
A
B
D
E
Frequency Stability
vs Operating Temperature
range
±100 ppm
Custom ±xx ppm
C
Cxx
F
Ixx
If custom, use “temperature range code + desired ppm stability” for the stability
code. Example: “C20” (±20 ppm over -10 to +70°C) or “I35”.
38.880 MHz ≤ fout <100 MHz: 45 mA max;
Current Consumption
100 MHz ≤ fout <320 MHz: 60 mA max.
320 MHz≤ fout ≤ 432 MHz: 70 mA max; (Measured with load).
vs Supply Voltage Change
vs Load Change
±3 ppm max.with ±10% supply voltage change
±2 ppm max.with ±10% Load change:
+3.3 V ± 10 % (Voltage code is “33”)
Supply Voltage VCC
Supply Voltage magnitude Change (∆ VDD) -50 m V min.; +50 m V max.
Logic High
Logic Low
VOH: 1.4 V typical; 1.6 V max. Condition: 100 Ω differential load.
VOL: 0.9 V min.; 1.1 V typical. Condition: 100 Ω differential load.
1.125 V min.; 1.20 V typical; 1.375 V max.
Output Voltage
Levels
Offset Voltage (VOS)
Offset Magnitude Change ( ∆VOS)
Output Differential Voltage (VOD)
Rise Time and Fall Time (Tr ; Tf)
Duty Cycle
0.0 mV min.; 3 mV typical; 25 mV max.
247 mV min.; 355 mV typical; 454 mV max.
0.7 ns typical; 1 ns max. 20% ↔ 80% of waveform; 100 ohm differential load.
50% ± 5% max. measured at 50% waveform
No Connection
Differential LVDS and complimentary LVDS outputs.
Both outputs are disabled (high impedance) when pad No. 2 is taken
below 0.45*Vcc referenced to ground (threshold). Oscillator is always
ON. Only buffer stage is disabled.
Disable current: 50 uA max. (at 0.0 V).
Disable time: 10 ns max.
At disabled mode, both outputs are enabled when pad No. 2 is taken
above 0.45*Vcc referenced to ground (threshold).
Enable time: 10ns+one period of the output frequency max.
Tri-state
Function
on pad
No. 1
Disable
Enable
SSB Phase
Noise (dBc/Hz)
Offset
77.760 MHz
155.520 MHz
10 Hz
-65
-62
100 Hz
-96
-92
1 kHz
-124
-120
10 kHz
-136
-132
100 kHz
-132
-128
1 MHz
-145
-144
10 MHz
-149
-150
MERCURY
www.mercury-crystal.com
Taiwan: TEL (886)-2-2406-2779, FAX (886)-2-2496-0769, e-mail: sales-tw@mercury-crystal.com
U.S.A.: TEL (1)-909-466-0427, FAX (1)-909-466-0762, e-mail: sales-us@mercury-crystal.com
MERCURY
Page 1 of 4
Date: April 1, 2008
Rev. 1