Timing Silicon Oscillators
Timing Extended Temperature (H & MP) Timing

LTC6905-XXX - Fixed Frequency SOT-23 Oscillator

Features

  • No External Components to Set Frequency
  • Frequency Error ±0.5% Typical
  • Fast Start-Up Time: 100µs Typical
  • ±20ppm/°C Temperature Stability
  • Includes Output Enable
  • Includes Divide by 1, 2 or 4
  • Rise Time: 0.5ns, CL = 5pF
  • Timing Jitter: <0.8% Typical
  • Duty Cycle: 50% ±2.5%
  • IS = 8mA Typical (fOSC = 100MHz, CL = 5pF)
  • CMOS Output Drives 600 Ohm Load
  • Single Supply 2.7V to 5.5V
  • Low Profile (1mm) ThinSOTTM Package
Designed for Automotive and Transportation Applications
AEC-Q100 data available for specific packages

Typical Application

LTC6905-XXX Typical Application
LTC6905-XXX Typical Application

Description

The LTC6905-XXX series of parts are precision, fixed frequency, silicon oscillators designed to minimize board space while maximizing accuracy and ease of use.

Programmed at the factory to a fixed frequency, the LTC6905-XXX series of parts need no external trim components. An internal three-state divider allows for division of the master clock by 1, 2 or 4, providing 3 frequencies (for each device).

The LTC6905-XXX series operate with a single 2.7V to 5.5V power supply and provide a rail-to-rail, 50% duty cycle, square wave output. The OE pin will disable the output when brought low and synchronously enable the output when brought high, avoiding pulse slivers.

The four products of the LTC6905-XXX family are:

  • LTC6905-133: fOSC = 133MHz, 66.7MHz, 33.3MHz
  • LTC6905-100: fOSC = 100MHz, 50MHz, 25MHz
  • LTC6905-96: fOSC = 96MHz, 48MHz, 24MHz
  • LTC6905-80: fOSC = 80MHz, 40MHz, 20MHz

The LTC6905-XXX series of parts are designed with a factory trim option to modify the divider ratios from 1, 2, 4 to 8, 16, 32. A second trim option allows for additional master clock frequencies. For the alternate divider ratios and unlisted frequencies, contact LTC marketing.

Protected by U.S. Patents, including 6614313, 6342817.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing		 RoHS
LTC6905CS5-100#PBF SOT-23 S5 C 05-08-1635 Yes
LTC6905CS5-100#TRMPBF SOT-23 S5 C 05-08-1635 Yes
LTC6905CS5-100#TRPBF SOT-23 S5 C 05-08-1635 Yes
LTC6905CS5-133#PBF SOT-23 S5 C 05-08-1635 Yes
LTC6905CS5-133#TRMPBF SOT-23 S5 C 05-08-1635 Yes
LTC6905CS5-133#TRPBF SOT-23 S5 C 05-08-1635 Yes
LTC6905CS5-80#PBF SOT-23 S5 C 05-08-1635 Yes
LTC6905CS5-80#TRMPBF SOT-23 S5 C 05-08-1635 Yes
LTC6905CS5-80#TRPBF SOT-23 S5 C 05-08-1635 Yes
LTC6905CS5-96#PBF SOT-23 S5 C 05-08-1635 Yes
LTC6905CS5-96#TRMPBF SOT-23 S5 C 05-08-1635 Yes
LTC6905CS5-96#TRPBF SOT-23 S5 C 05-08-1635 Yes
LTC6905HS5-100#PBF SOT-23 S5 H 05-08-1635 Yes
LTC6905HS5-100#TRMPBF SOT-23 S5 H 05-08-1635 Yes
LTC6905HS5-100#TRPBF SOT-23 S5 H 05-08-1635 Yes
LTC6905HS5-133#PBF SOT-23 S5 H 05-08-1635 Yes
LTC6905HS5-133#TRMPBF SOT-23 S5 H 05-08-1635 Yes
LTC6905HS5-133#TRPBF SOT-23 S5 H 05-08-1635 Yes
LTC6905HS5-80#PBF SOT-23 S5 H 05-08-1635 Yes
LTC6905HS5-80#TRMPBF SOT-23 S5 H 05-08-1635 Yes
LTC6905HS5-80#TRPBF SOT-23 S5 H 05-08-1635 Yes
LTC6905HS5-96#PBF SOT-23 S5 H 05-08-1635 Yes
LTC6905HS5-96#TRMPBF SOT-23 S5 H 05-08-1635 Yes
LTC6905HS5-96#TRPBF SOT-23 S5 H 05-08-1635 Yes
LTC6905IS5-100#PBF SOT-23 S5 I 05-08-1635 Yes
LTC6905IS5-100#TRMPBF SOT-23 S5 I 05-08-1635 Yes
LTC6905IS5-100#TRPBF SOT-23 S5 I 05-08-1635 Yes
LTC6905IS5-133#PBF SOT-23 S5 I 05-08-1635 Yes
LTC6905IS5-133#TRMPBF SOT-23 S5 I 05-08-1635 Yes
LTC6905IS5-133#TRPBF SOT-23 S5 I 05-08-1635 Yes
LTC6905IS5-80#PBF SOT-23 S5 I 05-08-1635 Yes
LTC6905IS5-80#TRMPBF SOT-23 S5 I 05-08-1635 Yes
LTC6905IS5-80#TRPBF SOT-23 S5 I 05-08-1635 Yes
LTC6905IS5-96#PBF SOT-23 S5 I 05-08-1635 Yes
LTC6905IS5-96#TRMPBF SOT-23 S5 I 05-08-1635 Yes
LTC6905IS5-96#TRPBF SOT-23 S5 I 05-08-1635 Yes


LTC6905-XXX Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)		 Price
(1k)*		 RoHS
LTC6905CS5-100#PBF SOT-23 C $1.71 Yes
LTC6905CS5-100#TRMPBF SOT-23 C $1.71 $1.17 Yes
LTC6905CS5-100#TRPBF SOT-23 C $1.71 $1.15 Yes
LTC6905CS5-133#PBF SOT-23 C $1.71 Yes
LTC6905CS5-133#TRMPBF SOT-23 C $1.71 $1.17 Yes
LTC6905CS5-133#TRPBF SOT-23 C $1.71 $1.15 Yes
LTC6905CS5-80#PBF SOT-23 C $1.71 Yes
LTC6905CS5-80#TRMPBF SOT-23 C $1.71 $1.17 Yes
LTC6905CS5-80#TRPBF SOT-23 C $1.71 $1.15 Yes
LTC6905CS5-96#PBF SOT-23 C $1.71 Yes
LTC6905CS5-96#TRMPBF SOT-23 C $1.71 $1.17 Yes
LTC6905CS5-96#TRPBF SOT-23 C $1.71 $1.15 Yes
LTC6905HS5-100#PBF SOT-23 H $2.45 Yes
LTC6905HS5-100#TRMPBF SOT-23 H $2.45 $1.75 Yes
LTC6905HS5-100#TRPBF SOT-23 H $2.45 $1.73 Yes
LTC6905HS5-133#PBF SOT-23 H $2.45 Yes
LTC6905HS5-133#TRMPBF SOT-23 H $2.45 $1.75 Yes
LTC6905HS5-133#TRPBF SOT-23 H $2.45 $1.73 Yes
LTC6905HS5-80#PBF SOT-23 H $2.45 Yes
LTC6905HS5-80#TRMPBF SOT-23 H $2.45 $1.75 Yes
LTC6905HS5-80#TRPBF SOT-23 H $2.45 $1.73 Yes
LTC6905HS5-96#PBF SOT-23 H $2.45 Yes
LTC6905HS5-96#TRMPBF SOT-23 H $2.45 $1.75 Yes
LTC6905HS5-96#TRPBF SOT-23 H $2.45 $1.73 Yes
LTC6905IS5-100#PBF SOT-23 I $2.04 Yes
LTC6905IS5-100#TRMPBF SOT-23 I $2.04 $1.46 Yes
LTC6905IS5-100#TRPBF SOT-23 I $2.04 $1.44 Yes
LTC6905IS5-133#PBF SOT-23 I $2.04 Yes
LTC6905IS5-133#TRMPBF SOT-23 I $2.04 $1.46 Yes
LTC6905IS5-133#TRPBF SOT-23 I $2.04 $1.44 Yes
LTC6905IS5-80#PBF SOT-23 I $2.04 Yes
LTC6905IS5-80#TRMPBF SOT-23 I $2.04 $1.46 Yes
LTC6905IS5-80#TRPBF SOT-23 I $2.04 $1.44 Yes
LTC6905IS5-96#PBF SOT-23 I $2.04 Yes
LTC6905IS5-96#TRMPBF SOT-23 I $2.04 $1.46 Yes
LTC6905IS5-96#TRPBF SOT-23 I $2.04 $1.44 Yes
Buy Now • Request Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC2073A-D LTC6905-133 Silicon Oscillator Demo Board $50.00
DC2073A-E LTC6905-100 Silicon Oscillator Demo Board $50.00
DC2073A-F LTC6905-96 Silicon Oscillator Demo Board $50.00
DC2073A-G LTC6905-80 Silicon Oscillator Demo Board $50.00
DC2073B-B LTC1799 Silicon Oscillator Demo Board $50.00
Buy Now
Click here to view our complete list of demo boards

Designed for Automotive and Transportation Applications

AEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports or to inquire about parts that are not included. For more information, view our Automotive and Transportation page

Part Number Package Temp Price
(1-99)		 Price
(1k)*		 RoHS
LTC6905HS5-100#PBF SOT-23 H $2.45 Yes
LTC6905HS5-100#TRMPBF SOT-23 H $2.45 $1.75 Yes
LTC6905HS5-100#TRPBF SOT-23 H $2.45 $1.73 Yes
LTC6905HS5-133#PBF SOT-23 H $2.45 Yes
LTC6905HS5-133#TRMPBF SOT-23 H $2.45 $1.75 Yes
LTC6905HS5-133#TRPBF SOT-23 H $2.45 $1.73 Yes
LTC6905HS5-80#PBF SOT-23 H $2.45 Yes
LTC6905HS5-80#TRMPBF SOT-23 H $2.45 $1.75 Yes
LTC6905HS5-80#TRPBF SOT-23 H $2.45 $1.73 Yes
LTC6905HS5-96#PBF SOT-23 H $2.45 Yes
LTC6905HS5-96#TRMPBF SOT-23 H $2.45 $1.75 Yes
LTC6905HS5-96#TRPBF SOT-23 H $2.45 $1.73 Yes
LTC6905IS5-100#PBF SOT-23 I $2.04 Yes
LTC6905IS5-100#TRMPBF SOT-23 I $2.04 $1.46 Yes
LTC6905IS5-100#TRPBF SOT-23 I $2.04 $1.44 Yes
LTC6905IS5-133#PBF SOT-23 I $2.04 Yes
LTC6905IS5-133#TRMPBF SOT-23 I $2.04 $1.46 Yes
LTC6905IS5-133#TRPBF SOT-23 I $2.04 $1.44 Yes
LTC6905IS5-80#PBF SOT-23 I $2.04 Yes
LTC6905IS5-80#TRMPBF SOT-23 I $2.04 $1.46 Yes
LTC6905IS5-80#TRPBF SOT-23 I $2.04 $1.44 Yes
LTC6905IS5-96#PBF SOT-23 I $2.04 Yes
LTC6905IS5-96#TRMPBF SOT-23 I $2.04 $1.46 Yes
LTC6905IS5-96#TRPBF SOT-23 I $2.04 $1.44 Yes
Buy Now • Request Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Applications

  • Data Clocks for High Reliability Applications
  • High Vibration, High Acceleration Environments
  • Replacement for Fixed Crystal and Ceramic Oscillators

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Design Tools

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

Models for the following parts are available in LTspice:
LTC6905
LTC6905-100
LTC6905-133
LTC6905-80
LTC6905-96

OscCalc, an Excel based selection and synthesis tool, allows you to choose and configure the Silicon Oscillator best suited for your application.

  • Download and open OscCalc
  • Enable Macros
  • Enter your desired switching frequency. Suitable silicon oscillators will be highlighted in green. Clicking on a part will show you the external component values and settings required to achieve your desired switching frequency.

Technical Support