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MANUFACTURER PART RECORD

LMK6B

Texas Instruments

LMK6B is a Texas Instruments ultra-low-jitter BAW oscillator in 6-pin VSON, for reference and core clocks in optical modules, switches, routers, and high-speed PAM-4 Ethernet. It achieves femtosecond-class differential RMS jitter with a BAW resonator, factory-programmed across a wide frequency range in LVDS, HS-LVDS, AC-LVPECL, Custom Swing, and LP-HCSL formats, with a tight total frequency stability budget including long-term aging. The benefit is link margin: femtosecond jitter and strong supply-noise rejection protect SerDes eye opening at the highest PAM-4 rates, in a compact footprint. Selection advice: LMK6B is factory-programmed per frequency, output format, function pin, and stability, so your RFQ must state the exact frequency, output format, stability grade, and package size; also confirm PCIe generation compliance against the datasheet for your SerDes. TI lists the LMK6B family as Active. Announced in TI OCP Global Summit AI data-center lineup (2026-10-12). Parameters verified against Texas Instruments documentation.

Integrated CircuitsBAW oscillatorVSON-6
MPN
LMK6B
Manufacturer
Texas Instruments
Family
BAW oscillator
Package
VSON-6
Manufacturer channel coverage
Checked by RFQ
Data last checked
Commercial check required
Required order checks
Suffix, package, date code, lot, source and traceability
PROCUREMENT DATA

Identity and sourcing requirements.

MANUFACTURER DATA REVIEW

Key technical specifications

Ordering-code highlights reviewed against official manufacturer documentation.

Function
BAW (bulk acoustic wave) differential oscillator family · factory-programmed: output format, frequency, stability grade and pin-1 function are all fixed by the orderable part number
Supply voltage
2.375 V to 3.465 V · nominal 2.5 V or 3.3 V rails
Total frequency stability
±25 ppm (option F) · the figure is a total budget including solder shift, initial tolerance, −40°C to +105°C, supply range and 10-year aging — do not add a separate aging allowance
RMS jitter
58 fs typical at 156.25 MHz and 25 fs typical at 625 MHz (LVDS, 12 kHz to 20 MHz) · headline 9.3 fs typical at 625 MHz HS-LVDS with the 4 MHz high-pass condition stated in §1
Phase noise
−112 dBc/Hz typical at 1 kHz offset and −157 dBc/Hz typical at 100 kHz · 156.25 MHz LVDS
Supply current
72 mA typical (LVDS, 156.25 MHz, 3.3 V, excluding load) · standby 2.3 mA typical (ST = GND, 3.3 V)
Output enable time
25 µs maximum
Frequency offerings
Initial frequencies 100 / 125 / 156.25 / 312.5 / 625 / 1,250 / 2,500 MHz · LP-HCSL output covers 50 MHz to 625 MHz; LVDS, HS-LVDS, AC-LVPECL and custom-swing cover 50 MHz to 2,500 MHz
Order-code structure
LMK6B + pin-1 function code + output-type code (D = LVDS, E/F/G/J = HS-LVDS, H/I = LP-HCSL, P = AC-LVPECL, A/B/K = custom swing) + frequency code + stability code (F = ±25 ppm) + package code (DLE 3.2 mm × 2.5 mm, DLF 2.5 mm × 2.0 mm, DLR 2.0 mm × 1.6 mm VSON-6) + R for large reel · worked example in SNAS889: LMK6BPE312500FDLRR
Document status
SNAS889 is a preliminary datasheet (advance information) and its addendum lists a preproduction orderable · re-verify all figures against the production revision before design-in
Source: TI SNAS889 (March 2026) — preliminary datasheet (marked ADVANCE INFORMATION; the addendum lists a preproduction orderable) · §1 Features, §4 Part Number Guide, §6.4 Recommended Operating Conditions, §6.6 Electrical Characteristics; Package Option Addendum · Reviewed 2026-10-30
QUOTE WORKFLOW

Four checks before a commercial offer.

01

Identity

Exact MPN, manufacturer and suffix

02

Supply

Supplier type, quantity and freshness

03

Evidence

Lot, labels, photos and documents

04

Terms

Price, lead time, payment and shipping

RELATED REFERENCES

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Browse existing catalog records — same series first, then the same category and manufacturer. These are not confirmed replacements; compatibility requires engineering review.

COMMON QUESTIONS

LMK6B FAQ

What are the key specifications of LMK6B?

From the verified technical profile: Function: BAW (bulk acoustic wave) differential oscillator family · factory-programmed: output format, frequency, stability grade and pin-1 function are all fixed by the orderable part number; Supply voltage: 2.375 V to 3.465 V · nominal 2.5 V or 3.3 V rails; Total frequency stability: ±25 ppm (option F) · the figure is a total budget including solder shift, initial tolerance, −40°C to +105°C, supply range and 10-year aging — do not add a separate aging allowance. These are the catalog-recorded values for LMK6B — always re-check them against the manufacturer datasheet revision quoted on your BOM before finalizing the design.