LTC6905IS5-100

Mfr. Part

LTC6905IS5-100

Manufacturer

Linear Technology / Analog Devices

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Detailed Description

High-frequency CMOS oscillator IC, factory-trimmed for a 100 MHz output. No crystal needed. Small 5-pin SOT-23 (IS5) package. Simple, single-supply operation. Low jitter clock source with optional on-chip divide settings (model-dependent) for lower output frequencies. Ideal as a compact, rugged replacement for crystal oscillators in digital systems.

Key Features

Output frequency: 100 MHz (fixed for -100 option; some variants offer internal division)

Single supply: typically 2.7 V to 5.5 V

Low jitter, clean CMOS clock output

Fast startup

50% duty cycle (typical)

Low power: a few mA typical at 100 MHz (see datasheet for exact numbers)

Operating temperature (I-grade): -40°C to +85°C

5-pin SOT-23 (IS5) footprint

RoHS-compliant, lead-free construction

ESD protection on pins

No external timing components required

Key Advantages

No crystal: simpler BOM, faster design-in, resistant to shock and vibration

Tiny footprint: saves PCB space

Quick startup: good for power-cycled and low-latency systems

Stable clock: low jitter improves timing margins and system performance

Flexible: internal divide options (on supported variants) let you derive lower clocks without extra ICs

Wide supply range: easy drop-in across 3.3 V and 5 V systems

Cost-effective clock generation for digital logic, MCUs, FPGAs, and data converters

Packaging

Type: SOT-23-5 (IS5) IC

Material: Molded epoxy package, matte tin-plated leads, lead-free, RoHS

Size: about 2.9 mm × 1.6 mm body, ~1.1 mm height (typical for SOT-23-5)

Pin configuration: 5 pins including V+, GND, CLKOUT, and control pins (e.g., DIV or Enable/OE; pin functions depend on exact variant)

Thermal characteristics: low thermal mass, typical θJA in the ~190–220°C/W range on standard PCB (see datasheet for exact test conditions)

Electrical properties: CMOS output swing to rails, supports 2.7–5.5 V operation, startup in milliseconds, duty cycle near 50% (see datasheet for precision)

Lifecycle

Status: As of our latest information, LTC6905IS5-100 is active and in production.

Not nearing discontinuation based on current public data. Always verify for the latest status.

Equivalent or alternative models:

- Same family, different fixed frequencies: LTC6905IS5-10 (10 MHz), LTC6905IS5-20 (20 MHz)

- Temperature/commercial grades in the same family: LTC6905CS5-100 (commercial temp), other grade options where available

- Related ADI clock ICs: LTC6906 (low-power oscillator family), LTC6930 family (precision fixed-frequency oscillators, lower-frequency ranges)

- Functional alternatives (module oscillators; check pinout and specs carefully): SiTime SiT8008/SiT8208 100 MHz MEMS oscillators, Microchip DSC1101/DSC1001 100 MHz, Abracon ASV/ASFL series 100 MHz, Epson SG-210SCD 100 MHz

If you need drop-in, pin-compatible replacements or specific electrical matches, contact our sales team via the Y-IC website for tailored cross-references and the newest lifecycle updates.

Key Application Areas

System clocks for MCUs, DSPs, and FPGAs

High-speed digital logic timing (100 MHz domains)

Data converters and mixed-signal timing

Test and measurement, instrumentation clocks

Communication and interface timing where clean, stable 100 MHz is required

General replacement for crystal oscillators when ruggedness and fast startup are priorities

Datasheet

Our website hosts the official manufacturer datasheet for LTC6905IS5-100. For the most accurate and complete specifications, recommended operating conditions, pin details, and application notes, download the datasheet directly from this product page.

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