# TCXO, 40 MHz, 280 ppb, SMD, 7mm x 5mm, LVCMOS, 3.3 V, AST3TQ-28 Series

![Product image](https://novapart.co/image/farnell:3573043/)

**URL**: https://novapart.co/products/AST3TQ-T-40.000MHZ-28/tcxo-40-mhz-280-ppb-smd-7mm-x-5mm-lvcmos-33-v
**SKU**: AST3TQ-T-40.000MHZ-28
**Manufacturer**: ABRACON
**Price**: €13.4000
**Stock**: 10+
**Lead Time**: 78 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (04-Feb-2026) |
| Frequency Nom | 40MHz |
| Product Range | AST3TQ-28 Series |
| Supply Voltage Nom | 3.3V |
| Frequency Stability + / - | 280ppb |
| Operating Temperature Max | 85°C |
| Operating Temperature Min | -40°C |
| Oscillator Case / Package | SMD, 7mm x 5mm |
| Oscillator Output Compatibility | LVCMOS |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:3573043/)

**Pb[ RoHS/RoHS II Compliant]** S| **7.0 x 5.0 x 1.9mm** —_ 

## **Precision SMD TCXO/VCTCXO** AST3TQ-28 | ds 

## **ESD Sensitive** 

## **Moisture Sensitivity Level (MSL) – 3** Se **FEATURES:** 

- Standard available frequencies: 10.00, 12.80, 15.36, 16.32, 16.384, 19.20, 19.44, 20.00, 25.00, 26.00, 30.72 & 40.00 MHz 

- Standard LVCMOS Output 

- Frequency stability of ±280 ppb (±0.28 ppm) over -40°C to +85°C 

- Excellent Phase Noise, Harmonics & Spurious content 

- Typical rms jitter of 400fs @ 40MHz carrier & 1.0ps @ 10MHz carrier over 12kHz to 20MHz BW 

## **Pb** S| 

## a. **APPLICATIONS:** 

- COTS Military Radios & other Communication Hardware 

- WiMax, 

- LTE, BTS 

- CATV, LAN, LMDS 

- GPS Tracking with Hold-Over accuracy 

- Test & Measurement Equipment 

- Point-to-Point communication networks 

## **STANDARD SPECIFICATIONS:** yy. 

|**Parameters**|**Minimum**|**Typical**|**Maximum**|**Units**|**Notes**|
|---|---|---|---|---|---|
|FrequencyRange<br>~~a~~|10<br>~~Gs RO~~|~~RO~~|40<br>~~RO~~|MHz<br>~~I~~||
|Standard Frequencies:<br>~~a~~<br>~~a~~|10.00, 12.80, 15.36, 16.32, 16.384, 19.20,<br>19.44,20.00,25.00,26.00,30.72 and 40.00<br>~~Gs RO~~<br>~~en~~|||MHz<br>~~I~~||
|Initial Frequency Tolerance<br>(@+25°C)at shipping<br>~~es~~|~~es~~|~~es~~<br>~~en~~|±0.3<br>~~es~~<br>~~en~~|ppm<br>~~es~~|Relative to carrier<br>~~es~~|
|**Frequency Stability Options**<br>~~en~~<br>~~Pee~~<br>~~ny (nn (II~~||||||
|-40°C  to +85°C<br>~~es~~|~~es~~<br>~~ny (nn~~<br>~~es~~|~~es~~<br>~~(nn (I~~<br>~~s es~~|±280<br>~~es~~<br>~~(I~~<br>~~es~~|ppb<br>~~es~~<br>~~I~~<br>~~es~~|~~es~~|
|Frequency Stability vs. Supply Voltage<br>Change(Vdd±5%):<br>~~e~~|~~ny (nn~~<br>~~e~~<br>~~es~~<br>~~es~~|~~(nn (I~~<br>~~e~~~~**e**~~<br>~~s es~~<br>~~es es~~|±100<br>~~(I ~~<br>~~**e**~~<br>~~es~~<br>~~es~~|ppb<br> ~~I~~<br>~~**e**~~<br>~~es~~<br>~~es~~|~~**e**~~|
|Frequency Stability vs. Load Change<br>(Load±5%):<br>~~ee~~<br>~~a~~|~~es~~<br>~~ee~~<br>~~es~~<br>~~nN~~|~~s es~~<br>~~ee~~<br>~~es es~~<br>~~nN~~|±200<br>~~es ~~<br>~~ee~~<br>~~es~~|ppb<br> ~~es~~<br>~~ee~~<br>~~es~~|~~ee~~|
|SupplyVoltage(Vdd):<br>~~ay~~<br>~~a~~|+3.135<br>~~es~~<br>~~ay~~<br>~~nN~~|+3.3<br>~~es es~~<br>~~ay~~<br>~~nN~~|+3.465<br>~~es ~~<br>~~ay~~|V<br> ~~es~~<br>~~ay~~|~~ay~~|
|Aging (firstyear@+25°C):<br>~~a~~|~~nN~~|~~nN~~|±1.0|ppm||
|Aging (20years@+25°C):<br>~~sn~~|~~sn~~|±3.0<br>~~sn~~|±4.6<br>~~sn~~|ppm<br>~~sn~~|~~sn~~|
|Supply Current (Icc) (into 15pF load):<br>~~ee~~|~~ee~~<br>~~ee~~|3.0<br>~~ee~~<br>~~ee~~|4.0<br>~~ee~~|mA<br>~~ee~~<br>~~fF~~|@10MHz carrier<br>~~ee~~<br>~~fF~~|
||~~ee~~<br>~~ee~~|5.5<br>~~ee~~<br>~~ee~~|7.0<br>~~ee~~||@40MHz carrier<br>~~ee~~<br>~~fF~~|
|**LVCMOS Output (Square wave)**<br>~~ee~~<br>~~ee~~<br>~~fF~~<br>~~nn~~||||||
|VOH:<br>~~a~~|2.4|||V|Load=15pF<br>~~(~~|
|VOL:<br>~~GO~~|~~GO~~|~~GO~~|0.4<br>~~GO~~|V<br>~~GO~~|Load=15pF<br>~~GO~~|
|Load:<br>~~a~~<br>~~a~~|~~GO~~|~~GO~~|15<br>~~GO~~|pF<br>~~(~~|~~(~~|
|DutyCycle:<br>~~a~~|45||55|%<br>~~(~~|@(VOH-  VOL)/2<br>~~(~~|
|Rise/Fall Time:<br>~~a~~<br>~~a~~<br>~~a~~|~~DS~~<br>~~nD~~|~~DS~~|6<br>~~I ~~|ns<br>~~(~~<br> ~~(~~<br>~~(~~|Load=15pF<br>~~(~~<br>~~(~~<br>~~(~~|
|RMS Jitter(12kHz to 20MHz BW)<br>~~a~~<br>~~a~~|0.4<br>~~nD~~<br>~~es ed~~|~~es ed~~|1.3|ps<br>~~(~~|Carrier dependent<br>~~(~~|
|Control Port<br>~~a~~<br>~~a~~|~~nD~~<br>~~es ed~~<br>~~nD~~|~~es ed~~<br>~~nD~~|~~OO~~|~~(~~<br>~~OO~~|**_Applicable for_**<br>**_VCTCXO only_**<br>~~(~~|
|Voltage Range(Vc)<br>~~a~~<br>~~aD~~<br>~~a~~|0.50<br>~~es ed~~<br>~~aD~~<br>~~nD~~<br>~~Ge~~|~~es ed~~<br>~~aD~~<br>~~nD~~<br>(nnn|+2.50<br>~~aD~~<br>~~OO~~|V<br>~~aD~~<br>~~OO~~|~~aD~~|
|FrequencyPull<br>~~nn~~<br>~~a~~|±7.00<br>~~nD~~<br>~~nn~~<br>~~Ge~~<br>~~Gs~~|±10.00<br>~~nD~~<br>~~nn~~<br>(nnn<br>~~Gs es~~|±12.00<br>~~OO~~<br>~~nn~~<br>~~es~~|ppm<br>~~OO~~<br>~~nn~~|(Vc = 1.5V±1.0V)<br>~~nn~~|
|Center Control Voltage (Vc)<br>~~a~~<br>~~So~~|~~Ge~~<br>~~Gs~~<br>~~ry~~|+1.50<br>(nnn<br>~~Gs es~~<br>~~nn~~|~~es~~<br>~~nS~~|~~(OO~~|To be with-in ±500<br>ppb of Fc@25°C|
|Port Impedance<br>~~es~~<br>~~So~~|100<br>~~Gs~~<br>~~es~~<br>~~ry~~|~~Gs es~~<br>~~es~~<br>~~nn~~|~~es~~<br>~~es~~<br>~~nS~~|kΩ<br>~~es~~<br>~~(OO~~|~~es~~|
|Phase Noise<br>(10MHz carrier frequency @25°C):<br>~~So~~|~~ry~~<br>~~**ee**~~<br>~~ee~~|~~nn~~<br>~~ee~~|-95<br>~~nS~~<br>~~ee~~|dBc/Hz<br>~~(OO~~<br>~~7~~<br>~~F~~<br>~~PF|~~|Offset@10Hz<br>~~F~~|
||~~ry~~<br>~~**ee**~~<br>~~ee~~<br>~~ee~~|~~nn~~<br>~~ee~~<br>~~ee~~|-120<br>~~nS~~<br>~~ee~~||Offset @100Hz<br>~~F~~<br>~~P|~~|
||~~ry~~<br>~~**ee**~~<br>~~ee~~<br>~~ee~~|~~nn~~<br>~~ee~~<br>~~ee~~<br>~~**ee**~~|-140<br>~~nS~~<br>~~ee~~||Offset @1kHz<br>~~F~~<br>~~P|~~<br>~~PF~~|
||~~ry~~<br>~~**ee**~~<br>~~ee~~<br>~~ee~~|~~nn~~<br>~~ee~~<br>~~ee~~<br>~~**ee**~~|-145<br>~~nS~~<br>~~ee~~||Offset @10kHz<br>~~F~~<br>~~P|~~<br>~~PF|~~|
||~~ry~~<br>~~**ee**~~<br>~~ee~~|~~nn~~<br>~~ee~~<br>~~**ee**~~|-150<br>~~nS~~||Offset @100kHz<br>~~P|~~<br>~~PF|~~|



## **Precision SMD TCXO/VCTCXO** 

## AST3TQ-28 

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Pb  [ RoHS/RoHS II Compliant]<br>**----- End of picture text -----**<br>


**7.0 x 5.0 x 1.9mm** 

hz **OPTIONS & PART IDENTIFICATION:** 33~—— (left blank if standard) AST3TQ-    -                MHz **-** 28 - **Pull-Ability Frequency in MHz Packaging** Please specify the Blank: Bulk T =  TCXO frequency in MHz V = VCTCXO T5:  500pcs/reel e.g. 19.200MHz T2: 2000pcs/reel ~~za~~ **FREQUENCY STABILITY VS. TEMPERATURE** 3=—sSs 

5101 Hidden Creek Ln Spicewood TX 78669 Phone: 512-371-6159 | Fax: 512-351-8858 **LLC** For terms and conditions of sales, please visit: www.abracon.com 

ABRACON IS ISO9001-2015 CERTIFIED 

**REVISED** : 01.16.2019 

**Precision SMD TCXO/VCTCXO** 

AST3TQ-28 

**Pb[ RoHS/RoHS II Compliant]** 

**7.0 x 5.0 x 1.9mm** | | | 

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5101 Hidden Creek Ln Spicewood TX 78669 Phone: 512-371-6159 | Fax: 512-351-8858 For terms and conditions of sales, please visit: www.abracon.com 

ABRACON IS **REVISED** : 01.16.2019 ISO9001-2015 CERTIFIED | | 

**LLC** | 

**Precision SMD TCXO/VCTCXO** 

**7.0 x 5.0 x 1.9mm** 

a! AST3TQ-28 ) **Pb[ RoHS/RoHS II Compliant]** 

i **Typical Allan Deviation Performance @10.00MHz carrier** | 

**LLC** 

#—A ABRACON 

ABRACON IS **REVISED** : 01.16.2019 ISO9001-2015 CERTIFIED | | 

5101 Hidden Creek Ln Spicewood TX 78669 Phone: 512-371-6159 | Fax: 512-351-8858 For terms and conditions of sales, please visit: www.abracon.com 

**Precision SMD TCXO/VCTCXO** 

Oo AST3TQ-28 

**7.0 x 5.0 x 1.9mm** 

## **Pb[ RoHS/RoHS II Compliant]** ©) 

## ky **OUTLINE DIMENSION:** 

## Recommended Land Pattern 

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|**Pin**<br>**1**<br>**2**<br>**3**|**Function**<br>**NC****_(for TCXO)_**<br>**Vc (****_for VCTCXO_) **<br>**GND**<br>**Output**||
|---|---|---|
|**4**|**Vdd**||
|*****|**For factory test only**||
||**Dimensions: mm**||



## . «=—sri§$‘+$#$/W\YéwmbW'.EU“’ **REFLOW PROFILE:** a RAMP UPs3C/sec 22010 

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5101 Hidden Creek Ln Spicewood TX 78669 Phone: 512-371-6159 | Fax: 512-351-8858 For terms and conditions of sales, please visit: www.abracon.com 

ABRACON IS ISO9001-2015 CERTIFIED 

**REVISED** : 01.16.2019 

**Precision SMD TCXO/VCTCXO** 

a, AST3TQ-28 

**Pb[ RoHS/RoHS II Compliant]** OQ) 

**7.0 x 5.0 x 1.9mm** 

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TAPE & REEL:<br>aay8=——<C™—<br>Packaging:<br>            T5: 500pcs/reel<br>            T2: 2,000pcs/reel<br>MSL-3 packaging applies to MOQ=50 units (cut tape) & T5 and T2.<br>CROFTTHT TOS EOP TS]<br>ae.<br>‘ BGB000RH4s~<br>KO<br>W A0 B0 K0 P  F<br>16.0±0.3  5.7±0.15  7.6±0.15  2.4±0.15  8.0±0.1  7.5±0.1<br>E  D  P0  P2  T<br>1.75±0.1  1.5+0.1/-0.0  4.0±0.1  2.0±0.1  0.3±0.05<br>/ Nuk \ : i<br>W A  N T  E  F  D<br>16.5±0.4  330±0.5  100±0.3  1.8±0.2  2.1±0.3  10.75±0.3  13.5+0.5/-0.2<br>Dimensions: mm<br>**----- End of picture text -----**<br>


**ATTENTION:** - tions. Abracon’s products are not specifically designed for Military, Aviation, Aerospace, Life-dependent Medical applications or any application requiring high reliability where component failure could result in loss of life and/or property. For applications requiring high reliability and/or presenting an extreme operating environment, written consent and authorization from Abracon LLC is required. Please contact Abracon LLC for more information. 

4 —4 ABRACON 

ABRACON IS **REVISED** : 01.16.2019 ISO9001-2015 CERTIFIED | | 

5101 Hidden Creek Ln Spicewood TX 78669 Phone: 512-371-6159 | Fax: 512-351-8858 **LLC** For terms and conditions of sales, please visit: www.abracon.com 



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- [View this product on Novapart](https://novapart.co/products/AST3TQ-T-40.000MHZ-28/tcxo-40-mhz-280-ppb-smd-7mm-x-5mm-lvcmos-33-v)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/abracon/ast3tq-t-40-000mhz-28/tcxo-40mhz-lvcmos-smd-7mm-x-5mm/dp/3573043)
---

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