1 Features
• High-performance differential and single-ended
output Oscillator, supporting any fixed frequency
within the below range:
– LMK6D: 1MHz to 400MHz, LVDS output
– LMK6H: 1MHz to 400MHz, HCSL output
– LMK6P: 1MHz to 400MHz, LVPECL output
– LMK6C: 1MHz to 200MHz, LVCMOS output
• Ultra-low jitter:
– LMK6D/LMK6H/LMK6P: 100fs typical / 125fs
maximum RMS jitter at 156.25MHz (12kHz to
20MHz)
– LMK6C: 350fs typical / 500fs maximum RMS
jitter at 100MHz (12kHz to 20MHz)
– LMK6H: PCIe Gen 1 to Gen 6 compliant
• ±25ppm total frequency stability inclusive of 10
years aging and all other factors
• Smallest industry standard DLE and DLF
packages
• 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:
– –72dBc PSRR at 500kHz ripple
• Start-up time: < 5ms
• Standard frequencies:
– LVCMOS (MHz): 1, 2.04, 4, 8.192, 10, 12,
12.288, 16, 19.2, 20, 23.5, 24, 24.57, 25, 25.6,
26, 26.21, 27, 28.12, 32.768, 33.333, 40, 48,
49.15, 50, 54, 60, 65.53, 66, 74.25, 76.8, 80,
100, 108, 125, 133.330 and 156.25
– Differential (MHz): 25, 26, 32.5, 50, 51.84,
54, 65, 76.8, 80, 100, 108, 122.88, 125,
133.330, 148.35, 148.5, 150, 155.52, 156.25,
161.1328125, 200, 312.5, and 400
• Device can support any frequency between 1MHz
to 400MHz. Contact TI representative for any
frequency and samples needed

2 Applications
• 56G/112G PAM4 clocking
• 100G/200G/400G/800G Optical Transport Network
and Coherent Optics
• Network equipment, switches, routers, line cards,
SAN, data centers and baseband units (BBU)
• PCIe Gen 1 to Gen 6 compliant reference clock
• Industrial applications
• Test and measurement
• ASIC, FPGA, MCU reference clocking
• High-performance crystal oscillator replacement

3 Description
Texas Instruments' Bulk-Acoustic Wave (BAW) is a
micro-resonator technology that enables integration of
high-precision BAW resonator directly into packages
with ultra-low jitter clock circuitry. BAW is fully
designed and manufactured at TI factories like other
silicon-based fabrication processes.
The LMK6x device is an ultra-low jitter, fixedfrequency
oscillator which incorporates the BAW
as the resonator source. The device is factoryprogrammed
per specific operation mode, including
frequency, voltage, output type, and function pin. 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 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.