1 Features
• Differential and single-ended output, any frequency
within the given range can be supported:
– LMK6P: LVPECL output, 1 – 400 MHz
– LMK6D: LVDS output, 1 – 400 MHz
– LMK6H: HCSL output, 1 – 400 MHz
– LMK6C: LVCMOS output, 1 – 200 MHz
• Ultra-low jitter:
– LMK6P/LMK6D/LMK6H: 100-fs RMS jitter, Fout
≥ 100 MHz
– LMK6C: 300-fs RMS jitter, Fout ≥ 25 MHz
– LMK6H: PCIe Gen 1-6 compliant
• ±25-ppm total frequency stability inclusive of all
factors and 10 year aging
• Smallest industry standard package: 2.50 mm ×
2.00 mm (DLF)
– 3.20 mm × 2.50 mm (DLE) also available
• Support extended industrial temperature grade:
– LMK6P/LMK6D/LMK6H: –40°C to 85°C
– LMK6C: –40°C to 105°C
• Integrated LDO for robust supply noise immunity
• < 5-ms start-up time
• Fixed-frequency devices, programmed at the
factory. Short leadtime on new frequencies for
sampling. Contact TI representative.

2 Applications
• High-performance crystal oscillator replacement
• 56G/112G PAM4 clocking
• 400G/800G Optical Transport Network and
Coherent Optics
• PCIe Gen 1 to Gen 6 clock generation
• Network equipment, switches, routers, line cards,
SAN, data centers and baseband units (BBU)
• Test and measurement
• Medical imaging
• Professional audio/video
• FPGA and ASIC clocking

3 Description
Texas Instruments' Bulk-Acoustic Wave (BAW) is
a micro-resonator technology that enables the
integration of high-precision and ultra-low jitter clocks
directly into packages that contain other circuits. BAW
is fully designed and manufactured at TI factories like
other silicon-based fabrication processes.
The LMK6x device is a low jitter, fixed-frequency
oscillator which incorporates the BAW as the
resonator source. With a high-performance fractional
frequency divider, the LMK6x is capable of producing
any frequency within the specified range providing
a single device family for all frequency needs. The
device is factory-programmed per specific operation
mode, including frequency, voltage, output type, and
function pin. Contact a TI representative for additional
frequencies or other options.
The high-performance clocking, mechanical stability,
flexibility and small package options for this device
are designed for reference and core clocks in highspeed
SERDES used in Telecommunications, Data
and Enterprise Network and Industrial applications.