A matching family name can still give you the wrong clock
TI introduced the LMK6B in its October 2026 data-center announcement. The manufacturer page describes a fixed-frequency differential oscillator and lists several output formats. It also separates initial frequency offerings from other frequencies marked preview. A stock result labelled only LMK6B cannot tell you which combination is available or appropriate for your board.
The headline 9.3 fs is a typical RMS jitter figure for a specified measurement condition: 625 MHz HS-LVDS with a 4 MHz first-order high-pass filter and the stated integration band. Carry the measurement condition with the number. Do not copy that value into an approval sheet for a different output format and frequency without checking the corresponding specification.
Turn the schematic into a purchase requirement
For an example clock input requesting 156.25 MHz LP-HCSL, put the following fields in the sourcing row before opening a stock watch:
| Field | Why it goes in the row |
|---|---|
| Frequency and electrical output | The receiver expects both the right frequency and compatible signaling |
| Voltage and termination | Confirm the part and board conditions match the proposed circuit |
| Package and footprint | Verify the exact outline and land pattern, not just the pin count |
| Orderable code and qualification | Confirm the supplier's code and the approved timing, stability and temperature limits |
TI lists a 2.0 × 1.6 mm six-pin package and labels other package dimensions as preview on the page reviewed. If your board footprint calls for a different outline, pause for confirmation rather than accepting a familiar family name.
Decide whether a hit is actionable
Suppose a search returns a 625 MHz option and a 156.25 MHz option whose output format is not stated. Reject the first for this example; hold the second for verification. Neither should count as available approved supply. Once engineering signs off, monitor the exact orderable code and retain the matching distributor SKU. See the MPN versus SKU guide for the difference.
Who this is for
This is an ordering check for a fixed-frequency oscillator, not a timing qualification. The approved design, data sheet and supplier confirmation control the final choice.