# VCTCXO, 19.44 MHz, 0.5 ppm, HCMOS, 3.3 V, SMD, 7mm x 5mm
**URL**: https://novapart.co/products/LFTVXO009916/vctcxo-1944-mhz-05-ppm-hcmos-33-v-smd-7mm-x-5mm
**SKU**: LFTVXO009916
**Manufacturer**: IQD FREQUENCY PRODUCTS
**Category**: Crystals & Oscillators || Oscillators || Voltage Controlled - VC-TCXO Oscillators
**Price**: €4.5500
**Stock**: 10+
## Description
Frequency Nom:19.44MHz; Frequency Stability + / -:0.5ppm; Oscillator Output Compatibility:HCMOS; Supply Voltage Nom:3.3V; Oscillator Case:SMD, 7mm x 5mm; Product Range:-; Operating Temp
## Specifications
| Parameter | Value |
|---|---|
| Frequency Nom | 19.44MHz |
| Product Range | - |
| Supply Voltage Nom | 3.3V |
| Frequency Stability + / - | 0.5ppm |
| Operating Temperature Max | 85°C |
| Operating Temperature Min | -40°C |
| Oscillator Case / Package | SMD, 7mm x 5mm |
| Oscillator Output Compatibility | HCMOS |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:1100753/)
## **CFPT-126**
## **ISSUE 1 ; 7 JANUARY 2005**
## **Delivery Options**
- I Please contact our sales office for details
## **Package Outline**
I 7.0 x 5.0 x 2.0mm SMD (surface mount device)
## **Environmental Specification**
- I Storage Temperature Range -55 to 125°C
- I Vibration: IEC 60068-2-6 Test Fc Procedure B4, 10-60Hz 1.5mm displacement, at 98.1 ms[-2] , 30 minutes in each of three mutually perpendicular axes at 1 octave per minute
## **Description**
- I CFPT-126 is a surface mount temperature compensated voltage controlled oscillator (TCVCXO) providing a high degree of frequency stability over a wide temperature range
## **Supply Voltage**
- I Shock: IEC 60068-2-27 Test Ea, 980ms[-2] acceleration for 6ms duration, 3 shocks in each direction along three mutually perpendicular axes
- I Solderability: MIL-STD-202, Method 208, Category 3
- I 3.3V ± 5%
## **Frequency Stability**
- I Temperature ±0.5ppm ( code E)
- I Supply Voltage Variation ±0.3ppm *
- I Load Variation (15pF ±10%) ±0.2ppm I After Reflow ±1.0ppm
- Supply Voltage Variation : >30.0MHz to <40.0MHz, ±0.4ppm
## **Operating Temperature Range**
- I -40 to 85°C (code X)
## **Supply Current**
- I 3mA @ 20MHz typical
## **Output Compatibility**
- I HCMOS
- I Load: 15pF nom.
- I Vol: <10% Vsupply
- I Voh: >90% Vsupply
- I Duty Cycle: 45/55%
- I Rise Time: 8ns
- I Fall Time: 8ns
## **Ageing**
I ±1ppm / year typical in 1st year @ 25°C
## **Standard Stock Frequencies (MHz)**
- I 10, 12.8, 13.0, 16.384, 19.44, 20.0, 26.0, 32.768 40.0MHz
- Other frequencies may be available, please contact our sales office.
## **Frequency Adjustment**
- I >±5ppm by means of 1.65±1V control voltage
## **Marking**
- I CMAC and Batch Code
I Stab/Temp code + Frequency Code + Date Code
## **Minimum Ordering Information Required**
I Frequency + Model Number (Example 10.0MHz CFPT-126)
## **Outline in mm**
**==> picture [219 x 434] intentionally omitted <==**
**----- Start of picture text -----**
Pad Connections
7.0±0.15
1. Voltage Control
2. GND
3. Output
4. +Vs
T1, T2, T3, T4,
Do Not Connect
5.08
1 T1 2
T4 T2
4 T3 3
1.04 1.4 2.0
Solder pad layout
5.08
1.5
Output Waveform
tf tr +Vs
90% (VoH-VoL) VoH
50% (VoH-VoL)
10% (VoH-VoL)
VoL
0V
t
T
Duty cycle = t x 100(%)
T
0.9
0.6
2.0
0.79
5.0±0.15
1.2
4.20
**----- End of picture text -----**
## **Manufacturing Information**
- I Soldering: SMD product suitable for Convection Reflow soldering. Peak temperature 260°C. Maximum time above 220°C, 60 secs.
- I Washing: Able to withstand aqueous washing process.
- I Packaging: Tape and reel, details available on request.
## **Test Circuit**
**==> picture [177 x 105] intentionally omitted <==**
**----- Start of picture text -----**
Output
+Vs
0.1µF
4 3 15pF*
1 2
Voltage
Control
GND
**----- End of picture text -----**
- inclusive of probe and jig capacitance
## Links
- [View this product on Novapart](https://novapart.co/products/LFTVXO009916/vctcxo-1944-mhz-05-ppm-hcmos-33-v-smd-7mm-x-5mm)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/iqd-frequency-products/lftvxo009916/crystal-oscillator-smd-19-44mhz/dp/1100753)
---
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