VF940–T Series Tristate VCXO, 3.3V or 5.0V 12.62 x 20.32 mm, HCMOS/TTL Features RoHS Status Wide pull range – up to 1,000ppm for some frequencies Fundamental crystal design Hermetically sealed package Electrical Specifications Parameter Symbol Frequency Range F Frequency Stability ∆F/F Operating Temperature T -40 Supply Voltage VCC 4.75 3.15 Supply Current ICC Start-up Time Phase Jitter Typ 1.54 Vs. Operating Temperature, VCC 5.0 3.3 No load @ 1.4V Duty Cycle Output Levels Min Max Unit 200 MHz 25 ppm +85 C 5.25 3.45 V 20 mA Note @ 20MHz 10 TTL gates or 50 pF max., AC coupled 50 Ohms termination recommended for F > 52MHz Load Rise & Fall Times Condition TR/TF 20% to 80% VOH Max load VOH Max load TS 40 50 60 % Note 1 6 3 ns F < 54MHz F > 54MHz 0.9 VCC 0.1 VCC 2 1 10 ms 1 ps fj > 1kHz Note 1: ±5% symmetry available, contact factory for tighter requirements. 75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-497-6377 • www.ctsvalpey.com • RevB0613 Specifications are subject to change without notice 1 VF940–T Series Tristate VCXO, 3.3V or 5.0V 12.62 x 20.32 mm, HCMOS/TTL Electrical Specifications Parameter Symbol Condition Min Modulation Bandwidth fm @ VC = 2.5V Input Impedance Absolute Pull Range APR Unit Note 10 kHz @ -3dB fm < 10kHz 50 kOhm Overall ±50 ppm Note 2 Max ppm/V 5.0V 3.3V ±20 % Note 3 3.00 2.05 V Standard LV Option ±50 ±75 Monotonic, positive Deviation Slope Typ Linearity Setability (VC for center frequency) VC0 @ 25C, FNOM 2.00 1.25 2.50 1.65 Note 2: Up to ±1,000 ppm pull range available at some frequencies. Note 3: ±10% and ±5% linearity available. Note 4: 0 to 5V control voltage available for VCC 3.3V. Nominal control voltage is 2.5V and setability is ±0.5V in this case. Absolute Maximum Ratings Parameter Input Break Down Voltage Symbol Condition Min Typ Max Unit VCC -0.5 +7.0 V Storage Temperature TS -40 +85 C Control Voltage VC -1 +9 V Note Environmental and Mechanical Conditions Parameter Condition Mechanical Shock MIL STD 202, Method 213, Condition E Thermal Shock MIL STD 883, Method 1011, Condition A Vibration MIL STD 883, Method 2007, Condition A Soldering Conditions Hermetic Seal Marking 260C, for 10s max Leak rate less than 5x10-8 atm.cc/s of helium Epoxy ink or laser engraved 75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-497-6377 • www.ctsvalpey.com • RevB0613 Specifications are subject to change without notice 2 VF940–T Series Tristate VCXO, 3.3V or 5.0V 12.62 x 20.32 mm, HCMOS/TTL Pin Assignments Package Pin # Connection 1 VCONTROL 3 Tristate 7 Ground, Case 8 Output 12 N/C 14 VCC Marking Specification Model Number VF940-T 77.76MHz YWWx Pin 1 Date Code Manufacturer’s Code How to Order VF940 Stability Code Specification* S ±20 ppm ±25 ppm *Old code A is ±25 ppm. See new code above. Duty Cycle Code Specification H ±5% ±10% (std.) — T Supply Voltage Code Specification L 3.3V 5.0V (std.) — — FREQUENCY, MHz Operating Temperature Range Code Specification 0°C to +70°C (std.) 1 -40°C to +85°C Lead Configuration Code Specification G Gull Wing Through Hole (std.) Absolute Pull Range Code Specification ±50 ppm min. (std.) Up to ±1,000 XXXX ppm max. 75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-497-6377 • www.ctsvalpey.com • RevB0613 Specifications are subject to change without notice 3