SIT92184AA-X

Clock Buffers, Drivers Overview

The SiT92184AA-X is a high-performance 1:4 LVCMOS clock buffer designed for automotive applications. It operates from a 1.8 V to 3.3 V supply and supports input frequencies up to 200 MHz. The device features an additive phase jitter of less than 50 fs RMS and very low pin-to-pin skew under 50 ps. It includes integrated serial termination for 50 Ω channels and synchronous glitch-free output enable functionality. Packaged in an 8-pin, 2 x 2 mm DFN, it is qualified to AEC-Q100 Automotive Grade 1 standards with an operating temperature range of -40°C to +125°C.

Clock Buffers, Drivers Feature Summary

• High-performance 1:4 LVCMOS clock buffer with FMAX = 200 MHz
• Very low additive phase jitter (<50 fs RMS) and pin-to-pin skew (<50 ps)
• Synchronous glitch-free output enable (OE) function
• Integrated serial termination for 50 Ω channel impedance

Clock Buffers, Drivers Applications

• Automotive infotainment systems
• In-vehicle networking
• Collision detection devices

Clock Buffers, Drivers Procurement Notes

Verify the specific suffix 'X' against the manufacturer's official documentation to confirm packaging details, as standard ordering information lists 'T' for tape and reel. Ensure the selected part matches the required voltage and frequency specifications for the target application.

Clock Buffers, Drivers Selection Notes

Select this component when a low-jitter, single-ended 1:4 distribution buffer is required for automotive-grade designs. Consider the 200 MHz maximum frequency and 50 Ω integrated termination when designing PCB traces. Verify that the 1G pin logic aligns with the system's enable requirements.

Clock Buffers, Drivers Part Context

The SiT92184 belongs to SiTime's family of high-performance clock buffers. The 'AA' designation indicates the Automotive Grade 1 variant (-40°C to +125°C), while the base model supports various packages including 2x2mm DFN. This specific part replaces traditional quartz-based buffering solutions in compact automotive layouts.

Clock Buffers, Drivers Replacement Considerations

This component serves as a direct replacement for discrete quartz buffer circuits or other 1:4 LVCMOS buffers in automotive designs requiring AEC-Q100 qualification and low jitter performance.

Clock Buffers, Drivers FAQ

What is the maximum input frequency supported by the SiT92184?

The SiT92184 supports a maximum input frequency (FMAX) of 200 MHz.

How does the SiT92184 handle output enabling?

It features a synchronous glitch-free output enable (OE) function via the 1G pin to eliminate incorrect output clock cycles during enable/disable transitions.

Is the SiT92184 suitable for harsh automotive environments?

Yes, the AA version is AEC-Q100 qualified and rated for Automotive Grade 1 operation from -40°C to +125°C.