2016 4-pad clock oscillator


3.3V Ultra-miniature High Frequency SM Oscillator with Tight Stability

  • Ultra miniature SM package
  • Low and medium volumes readily available
  • Low voltage supply options
  • Enable / disable tristate function
Configurable Options
ParameterOption Code
Frequency stability
* see note below
Operating temperature range

* Frequency stability is inclusive of calibration @ 25°C, operating temperature range, supply voltage change and load change.

Quantity / Special Request

Please specify the quantity you require below.

The GXO-U121L is supplied on tape and reel. 3k pcs per reel is the standard T&R pack size for this product. Partial quantities may be supplied on tape (no reel), or in bulk.

Product Description

The GXO-U121L 3.3V oscillator is available over a very wide frequency range of 1.8 ~ 170MHz, and features tight frequency stability options along with ultra-miniature 2.0 x 1.6 x 0.85mm and ceramic package with metal lid.

The GXO-U121L is available with -40 to +85°C industrial operating temperature range, has fast start up time of 5ms maximum, and produces 15pF CMOS driving ability. 

This oscillator is available in low and medium quantities with short lead times, in addition to offering highly competitive pricing for high volume commercial projects.

Frequency range 1.80 ~ 170MHz
Dimensions 2.05 x 1.65 x 0.85
Storage temperature range -40 to +85°C
Supply voltage (VDD) +3.3V (±5%)
Supply current 20mA max (1.8 ~ 50.0MHz)
40mA max (>50.0 ~ 170MHz)
Logic levels ‘0’ level = 10%VDD max
‘1’ level = 90%VDD min
Start up time 5ms max
Waveform symmetry 45:55 max @ 50%VDD
Driving ability 15pF CMOS
Rise / fall time 6ns max (10~90%VDD)
Enable / disable function Tristate (control via pad 1)
Standby current 10µA
Package Drawing
Package footprint and pad configuration drawing for the Golledge GXO-U121 Oscillator showing full dimensions.
Ordering Information

To request a quotation for the GXO-U121L please use the configurable options form to choose the options you require and then submit your configured product to our team. Our expert advisers are always happy to help with your requirements and can be contacted on +44 1460 256 100 or at sales@golledge.com.

Following product selection you will be issued with a seven character Golledge part number. Your Golledge part number is the internationally accepted Golledge manufacturing part number (MPN) that should be used for all project documentation, including bills of materials (BoMs) and purchase orders.

If you have any queries regarding any of our documentation our dedicated sales team will be happy to help.

Enable / Disable Function
Input (pad 1)Output (pad 3)
Open Enabled
'1' level Enabled
'0' level High Impedance
Soldering Profile
Solder reflow profile for the GTXO-C77V
Tape & Reel Specification
Tape and Reel specifications
Handling & Storage

ESD-HBM-1A Human Body Model (HBM) 1A (250V to <500V)

MSL1 Moisture Sensitivity Level (MSL): 1 (or not applicable)

  • Ceramic body with gold-plated pads
  • Metal lid, seam sealed

PbFree Lead-free (< 0.1% by weight )

RoHS compliant with no exemptions RoHS compliant with no exemptions. See our declaration

REACH REACH compliant. See our statement

Conflict Minerals Statement Free of conflict minerals. See our declaration

Halogen Free Statement Free of Halogens. See our declaration

Ozone Depletion Statement Free of Ozone-depleting substances. See our declaration