
75 South Street, Hopkinton, MA 01748 800-982-5737 508-435-6831 FAX 508-435-5289 www.valpeyfisher.com
2
Pin 1
MARKING SPECIFICATION
The format for the marking is:
Valpey-Fisher
Model Code
Date Code
T Oscillator
MTXXYY
100.00
Frequency
Connections
Pad
Non-Tristate Models
Tristate Models
1.
Not Used
Floating or “1”: Oscillator runs Ground or
“0”: Disable or Tristate
2.
Ground and Case
3.
Output
4.
+3.3 V, VDD
HOW TO ORDER
For Part Number, put package type before model
number, and add frequency in MHz, for example:
T
7250 -
75M
T is SMD
7250
75M Frequency
T package
is model type
in MHz
ELECTRICAL SPECIFICATIONS
Frequency
20 KHz to 100MHz
Frequency Stability
Includes calibration at 25°C, operating
temperature, change of input voltage,
change of load, shock and vibration.
MIN
TYP
MAX
UNITS
Input Voltage, VDD
3.0
3.3
3.6
volts
Input Current
4.0
mA
Output
All units, full range
Loads
3 TLL loads, or 10LSTTL loads, or 15 pf CMOS
Rise and Fall Time
TTL and LSTTL from 0.4 to 2.4V
8
ns
CMOS, 15pf, from 0.4 to (VDD-0.4) V
8
ns
CMOS, 30pf, from 0.4 to (VDD-0.4) V
10
ns
Symmetry
TTL and LSTTL @ 1.4V
40/60
percent
CMOS @50% VDD
40/60
percent
Aging
First year
3
ppm
After first year
1
ppm/yr
ENVIRONMENTAL SPECIFICATIONS
Shock-1000 Gs, 0.35 ms, sine wave, 3 shocks in each plane
Vibration-10-2000 Hz of .06” d.a. or 20Gs, whichever is less
Humidity-Resistant to 85° R.H. at 85°C
MECHANICAL SPECIFICATIONS
Gross Leak-Each unit checked in 125°C fluorocarbon
Fine Leak-Mass spectrometer leak rate less than 2X10-8 atm,
cc/sec of helium
Case-Hermetically sealed ceramic package
Pads-60 microinch of gold over nickel
Marking-Epoxy ink or laser inscribed
Resistance to Solvents-MIL STD 202, Method 215
T7250, T7254, T7256, T7258, T7001 thru T7013,
T9250, T9254, T9256, T9258, T9301 thru T9313
Extended Temperature/COTS
5X7 mm Surface Mount
Rev. 0706