SIT8208AC-8F-18S-74.175824T

Oscillators Overview

The SIT8208AC-8F-18S-74.175824T is a MEMS-based standard clock oscillator from the SiT8208 series, manufactured by SiTime. It operates at a nominal frequency of 74.175824 MHz with an output format compatible with LVCMOS and LVTTL logic levels. The device is powered by a single 1.8V supply voltage, drawing a maximum current of 31mA during operation and reducing to a standby current of 10µA when disabled. It features a frequency stability of ±50ppm over its operating range. The component utilizes a 4-SMD, no-lead package with dimensions of 2.70mm x 2.40mm and a maximum height of 0.80mm. It is designed for surface-mount installation and supports an industrial temperature range of -20°C to +70°C.

Oscillators Feature Summary

• Utilizes silicon MEMS technology as the fundamental resonator instead of traditional quartz crystals.
• Provides ultra-low phase jitter performance specified at 0.5 ps within the 12 kHz to 20 MHz offset range.
• Supports enable/disable functionality allowing for low-power standby modes with minimal current consumption.
• Offers pin-to-pin compatibility with standard quartz oscillators across various package sizes.

Oscillators Applications

• SATA and SAS storage interface connections
• Ethernet networking equipment and transceivers
• PCI Express peripheral interconnects
• Video signal processing systems
• WiFi communication modules

Oscillators Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration upon ordering. Confirm that the AC grade corresponds to the required -20°C to +70°C industrial temperature range for your application environment. Ensure the 1.8V supply rail matches the device's electrical specifications before integration. Check RoHS3 compliance status if environmental regulations are strict for your region.

Oscillators Selection Notes

Select this model when a precise 74.175824 MHz clock source is required for digital interfaces. The MEMS construction offers superior shock and vibration resistance compared to quartz alternatives. Consider the 4-SMD footprint for space-constrained PCB layouts. The LVCMOS/LVTTL output ensures direct interfacing with standard logic families without additional level shifting components.

Oscillators Part Context

This oscillator belongs to the SiT8208 family, which represents SiTime's ultra-performance MEMS timing solutions. The series is characterized by field-programmable frequencies and high reliability metrics, including a failure rate of 2 FIT or 500 million hour MTBF. The AC variant specifically targets industrial applications requiring stable timing under moderate thermal variations while maintaining compact physical dimensions.

Oscillators Replacement Considerations

Direct equivalent replacements include SIT8208AC-G3-18S-74.175824X and SIT8208AC-G3-18S-74.175824Y. These parts share identical electrical parameters and package dimensions but may differ in packaging quantity or specific manufacturing lot characteristics. Verify pin compatibility and electrical ratings before substituting.