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Analog Devices Inc. LTC6905HS5-133#TRPBF
- Part No.:
- LTC6905HS5-133#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Programmable Timers and Oscillators
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
LTC6905HS5-133#TRPBF.pdf
- Description:
- IC OSC SILICON 133MHZ TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,191
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Product details
Overview
LTC6905HS5-133#TRPBF from Analog Devices (formerly Linear Technology) is a precision fixed-frequency silicon oscillator in ThinSOT-23 package, delivering factory-trimmed output frequencies of 133.33 MHz, 66.66 MHz, or 33.33 MHz via DIV pin selection. It features ±0.5% typical frequency accuracy at 25°C, ±20 ppm/°C temperature stability, and rail-to-rail CMOS output driving 600Ω loads. Used for high-reliability clocking in aerospace data links and vibration-prone instrumentation.
For engineers reviewing the LTC6905HS5-133#TRPBF datasheet, LTC6905HS5-133#TRPBF pinout, LTC6905HS5-133#TRPBF application, or LTC6905HS5-133#TRPBF equivalent, key selection criteria include its H-grade (–40°C to 125°C) operation, fast 100 µs start-up, synchronous OE control, and guaranteed performance across all three divider ratios without external components.
Technical Context
The LTC6905HS5-133#TRPBF integrates a master oscillator with a programmable 3-state divider (N = 1, 2, or 4), enabling three precise output frequencies from a single device. Its internal bias circuit maintains VRES = 1 V ±5%, ensuring stable oscillation independent of supply voltage drift within 2.7 V to 5.5 V.
Output enable (OE) provides asynchronous disable and synchronous enable-pulling OE low immediately disables OUT, while pulling high enables on the next rising edge to eliminate pulse slivers. The DIV pin detects open (÷2), V+ (÷1), or GND (÷4) states using internal 15 µA current sources, requiring no external pull resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequencies | 133.33 MHz (÷1), 66.66 MHz (÷2), 33.33 MHz (÷4); factory-trimmed, no external tuning required |
| Frequency Accuracy | ±0.5% typical at 25°C; ±2.9% over –40°C to 125°C operating range |
| Temp Stability | ±20 ppm/°C - ensures <±0.3% total drift across full industrial H-grade range |
| Rise/Fall Time | 0.5 ns (10%–90%, CL = 5 pF) - supports clean signal integrity up to 133 MHz |
| Supply Range | 2.7 V to 5.5 V - compatible with 3.3 V and 5 V systems; optimized for 3 V operation |
| Timing Jitter | <0.8% typical - low jitter critical for high-speed serial link timing margins |
| Duty Cycle | 50% ±2.5% - symmetrical square wave essential for balanced clock distribution |
| Start-Up Time | 100 µs to within 1% of final frequency - enables rapid system wake-up in power-gated designs |
Pinout & Package
Package: 5-lead ThinSOT-23 (S5), 1 mm profile, JEDEC MO-193 compliant, footprint compatible with standard SOT-23 but thinner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ (Pin 1) | Power supply input | 2.7 V to 5.5 V rail; requires local 0.1 µF bypass capacitor directly to GND (Pin 2) for low-noise operation |
| GND (Pin 2) | Ground reference | Must connect to low-impedance ground plane; multiple vias recommended for thermal and noise performance |
| OE (Pin 3) | Output enable control | Asynchronous low-disable / synchronous high-enable; eliminates glitches during clock gating |
| DIV (Pin 4) | Divider ratio select | Three-state logic: V+ = ÷1, open = ÷2, GND = ÷4; internal 15 µA bias sources eliminate need for external resistors |
| OUT (Pin 5) | CMOS clock output | Rail-to-rail, 50% duty cycle; drives ≥600 Ω load or ≤5 pF capacitance at full frequency; rise/fall time 0.5 ns |
Key Features
| Feature | Design Value |
|---|---|
| No external components | Factory-trimmed oscillator core eliminates capacitors, resistors, or crystals - reduces BOM count and layout area |
| Synchronous OE enable | Eliminates pulse slivers by aligning output activation to next clock edge - critical for glitch-free clock domain crossing |
| H-grade temperature range | Specified performance from –40°C to 125°C - qualified for under-hood automotive, avionics, and industrial control environments |
| Low timing jitter | <0.8% peak-to-peak period jitter - preserves setup/hold margins in high-speed interfaces like SPI, LVDS, or ADC sampling clocks |
| Supply noise immunity | Internal regulation rejects supply ripple; avoids frequency modulation from switching regulators unless noise aligns with fMO/64 (2.09 MHz for 133 MHz) |
| Fast start-up | 100 µs stabilization time - supports low-power modes with rapid wake-up without waiting for crystal settling |
Applications
| Aerospace Data Links | Industrial Motor Control |
|---|---|
|
Use Scenario: Clocking high-integrity serial data transceivers in satellite telemetry modules subject to launch vibration and thermal cycling. IC Role / Device Role / Timing Role: Primary system clock source for UART and HDLC controllers, replacing fragile ceramic resonators. Use Value: ±20 ppm/°C stability and 125°C operation ensure timing integrity across orbital temperature swings; 100 µs start-up enables responsive command-response cycles. |
Use Scenario: Synchronizing PWM gate drivers and position feedback sampling in servo amplifiers deployed in factory automation machinery. IC Role / Device Role / Timing Role: Master clock generator for FPGA-based motion control logic and ADC sampling sequencers. Use Value: 133 MHz ÷2 = 66.66 MHz provides precise timing for 16-bit ADC oversampling; CMOS drive strength ensures clean edges into noisy motor-drive PCB environments. |
| Medical Imaging Sensors | Test & Measurement Equipment |
|
Use Scenario: Providing pixel clock and line sync timing for high-resolution CCD/CMOS image sensors in portable ultrasound probes. IC Role / Device Role / Timing Role: Low-jitter clock source for analog front-end sampling and digital image pipeline clocking. Use Value: <0.8% jitter prevents temporal smearing in time-of-flight measurements; 50% ±2.5% duty cycle ensures balanced charge transfer in sensor readout circuits. |
Use Scenario: Generating reference clocks for high-speed digitizers and arbitrary waveform generators where phase noise impacts measurement fidelity. IC Role / Device Role / Timing Role: Stable, switchable-frequency timing reference for DAC/ADC clock trees and trigger synchronization. Use Value: Three factory-set frequencies (133/66.7/33.3 MHz) allow one BOM item to support multiple instrument bandwidth configurations without redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-frequency oscillator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC6905IS5-133#TRPBF | I-grade (–40°C to 85°C), identical electrical specs and pinout | Not rated for continuous operation above 85°C; unsuitable for under-hood or high-ambient industrial use | Select only if system ambient stays ≤85°C and cost sensitivity outweighs thermal margin needs |
| SiT8008BI-23-33E-133.333333 | MEMS-based, ±20 ppm initial accuracy, 133.333333 MHz fixed, same SOT-23-5 package | Higher long-term aging (±5 ppm/year vs LTC6905's ±300 ppm/√kHr), no OE or DIV functionality | Choose when absolute frequency precision >133.333333 MHz matters more than programmability or ultra-low jitter |
Compared with LTC6905IS5-133#TRPBF, the LTC6905HS5-133#TRPBF adds guaranteed 125°C operation and tighter high-temp accuracy; versus SiT8008BI-23-33E-133.333333, it offers on-the-fly frequency division and lower jitter but lacks MEMS-level aging stability.
Availability
LTC6905HS5-133#TRPBF is available at Aetrix Electronics and suitable for aerospace telemetry, industrial motor control, and medical imaging systems requiring stable component supply, extended temperature reliability, and rapid design-in.
Supply support for LTC6905HS5-133#TRPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices acquired Linear Technology in 2017 and maintains its precision analog and timing product lines with full datasheet, simulation model, and application support.
The LTC6905HS5-133#TRPBF belongs to the LTC6905-XXX series of silicon oscillators designed for space-constrained, high-reliability clocking where crystal replacement, fast start-up, and temperature resilience are mandatory.
FAQ
What is the operating temperature range for LTC6905HS5-133#TRPBF?
The LTC6905HS5-133#TRPBF is an H-grade device with a specified operating temperature range of –40°C to 125°C and guaranteed performance across that full range. Its frequency accuracy is ±2.9% over this interval, and it maintains ±20 ppm/°C temperature stability. This makes LTC6905HS5-133#TRPBF suitable for under-hood automotive, avionics, and high-ambient industrial applications where standard commercial or industrial grades would fail.
How does the DIV pin select output frequency on LTC6905HS5-133#TRPBF?
The DIV pin on LTC6905HS5-133#TRPBF selects among three output frequencies using three-state logic: tying DIV to V+ selects ÷1 (133.33 MHz), leaving DIV open selects ÷2 (66.66 MHz), and tying DIV to GND selects ÷4 (33.33 MHz). Internal 15 µA current sources detect the state-no external resistors needed. The LTC6905HS5-133#TRPBF guarantees performance across all three ratios, with frequency accuracy tested at ÷1 and others ensured by design.
Does LTC6905HS5-133#TRPBF require external components for basic operation?
No, the LTC6905HS5-133#TRPBF requires no external timing components-its oscillator core is factory-trimmed and fully integrated. Only a 0.1 µF ceramic bypass capacitor between V+ and GND is mandatory for stable operation. No load resistors, termination networks, or frequency-setting resistors are needed. This simplifies layout, reduces BOM count, and improves reliability compared to crystal-based or resistor-programmed alternatives like LTC6905HS5-133#TRPBF's predecessor LTC6900.
What is the start-up time specification for LTC6905HS5-133#TRPBF?
The LTC6905HS5-133#TRPBF achieves frequency stability within 1% of final value in 100 µs typical after power-on. This fast start-up enables rapid wake-up from low-power sleep states without waiting for crystal ring-down. The specification holds across the full supply range (2.7 V to 5.5 V) and temperature range (–40°C to 125°C), making LTC6905HS5-133#TRPBF ideal for battery-powered instruments and responsive control systems.
Can LTC6905HS5-133#TRPBF drive a 50 Ω transmission line directly?
No, the LTC6905HS5-133#TRPBF CMOS output is not designed to drive 50 Ω loads directly. Its output stage delivers rail-to-rail swing into ≥600 Ω resistive loads or ≤5 pF capacitive loads. Driving a 50 Ω line requires external impedance matching-typically a series 450 Ω resistor at the source (for 3.3 V supply) to form a 50 Ω source termination. Reference Figure TA02 in the LTC6905HS5-133#TRPBF datasheet for verified 50 Ω cable drive implementation.
LTC6905HS5-133#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Oscillator, Silicon
- Count:
- -
- Frequency:
- 133MHz
- Voltage - Supply:
- 2.7V ~ 5.5V
- Current - Supply:
- 10 mA
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- TSOT-23-5
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC6905HS5-133#TRPBF FAQ
1.How can I place an order for LTC6905HS5-133#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6905HS5-133#TRPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LTC6905HS5-133#TRPBF reliable?
The price and inventory of LTC6905HS5-133#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6905HS5-133#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6905HS5-133#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6905HS5-133#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6905HS5-133#TRPBF?
LTC6905HS5-133#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6905HS5-133#TRPBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LTC6905HS5-133#TRPBF?
For technical support, including LTC6905HS5-133#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6905HS5-133#TRPBF requirements.
6.How does Aetrix verify that LTC6905HS5-133#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6905HS5-133#TRPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LTC6905HS5-133#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6905HS5-133#TRPBF?
All LTC6905HS5-133#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6905HS5-133#TRPBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LTC6905HS5-133#TRPBF part is unused and in its original packaging.
Return procedure for LTC6905HS5-133#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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