Infineon Technologies SAF-C165UTAH-LMV1.3

Overview

SAF-C165UTAH-LMV1.3 from Maxim Integrated is a factory-trimmed 3-pin silicon oscillator delivering a rail-to-rail, 50% duty-cycle square-wave output at 16MHz for microcontroller and UART clocking in 2.7V–5.5V systems. It operates across –40°C to +125°C, achieves ±2% initial frequency accuracy, exhibits ≤180ps_P-P jitter at 16MHz, and starts up in 5µs-enabling reliable timing in white goods, automotive controls, and portable equipment.

For engineers reviewing the SAF-C165UTAH-LMV1.3 datasheet, SAF-C165UTAH-LMV1.3 pinout, SAF-C165UTAH-LMV1.3 application, or SAF-C165UTAH-LMV1.3 equivalent, key selection criteria include startup time, temperature drift (±100ppm/°C), output drive capability (±10mA), duty cycle stability (40–60%), and SC70-3 package compatibility with high-vibration or humid environments.

Technical Context

The SAF-C165UTAH-LMV1.3 implements a fully integrated, PLL-free oscillator core using BiCMOS process technology, generating stable 16MHz timing without external load capacitors or biasing components. Its push-pull CMOS output drives 1kΩ to GND or 500Ω to V+, eliminating impedance-matching concerns when interfacing with µC clock inputs.

Frequency stability is maintained via factory trimming and inherent immunity to mechanical vibration and EMI-achieved by avoiding high-impedance nodes and crystal-based resonance. Temperature compensation ensures ±100ppm/°C drift over –40°C to +125°C, with supply voltage variation causing <±0.5% frequency shift across 2.7V–5.5V.

Key Specifications

Pinout & Package

The SAF-C165UTAH-LMV1.3 is housed in a space-saving 3-pin SC70 package (JEDEC MO-203AA), with exposed pad not connected internally. Mounting requires standard reflow profile for SC70-3; thermal performance is optimized with minimal PCB copper area under the device.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar silicon oscillator applications.

Compared with MAX7375AXR166-T, SAF-C165UTAH-LMV1.3 delivers tighter initial accuracy (±2% vs. ±3%) and lower jitter (180ps_P-P vs. 250ps_P-P), making it preferable for high-speed UART and synchronous peripheral timing; SiT1533 is functionally unrelated due to frequency and application mismatch.

Availability

SAF-C165UTAH-LMV1.3 is available at Aetrix Electronics and suitable for automotive body control modules, smart appliance microcontrollers, and portable medical monitors requiring stable component supply across extended temperature ranges and high-reliability production cycles.

Supply support for SAF-C165UTAH-LMV1.3 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

Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and timing ICs for demanding industrial, automotive, and computing applications-with emphasis on robustness, integration, and reliability.

The MAX7381 product line delivers factory-trimmed silicon oscillators as drop-in replacements for crystals and ceramic resonators-targeting cost-sensitive, high-volume applications where vibration, humidity, and fast startup are critical constraints.

FAQ

Is SAF-C165UTAH-LMV1.3 pin-compatible with standard 3-pin ceramic resonators?

No-it replaces ceramic resonators but uses a different pinout and electrical interface: ceramic resonators require two pins plus ground and external load capacitors, while SAF-C165UTAH-LMV1.3 is a 3-pin active oscillator (V+, CLOCK, GND) with no external components. Layout must accommodate SC70-3 footprint and remove all resonator biasing circuitry.

Can SAF-C165UTAH-LMV1.3 drive a 50pF capacitive load without degradation?

Yes-characterized waveforms show stable 16MHz output with CL = 50pF and 100pF at 3.3V supply; rise/fall times remain ≤5ns and duty cycle stays within 40–60%. For loads >50pF, increase local V+/GND decoupling capacitance to ≥1nF to maintain jitter performance.

What is the maximum operating junction temperature for continuous use?

The absolute maximum junction temperature is +150°C, and the device is guaranteed to operate continuously over –55°C to +135°C ambient. At +125°C ambient and 5.5V supply, typical power dissipation is ~5.5mW, resulting in junction temperature well below 150°C with standard PCB copper exposure.

Does SAF-C165UTAH-LMV1.3 require a power-on reset circuit?

A reset circuit is recommended: the oscillator stabilizes within 5µs after V+ exceeds ~1.65V, but µCs often require clock stability before releasing reset. Use a voltage detector (e.g., MAX6326) to assert reset until ≥20µs after V+ rises above 2.7V-ensuring reliable boot sequence in automotive and industrial systems.