1 Features
• High-performance 1:2, 1:3, 1:4, 1:6 and 1:8
LVCMOS clock buffer
• Very low output skew:
– LMK1C1102A, LMK1C1103A and
LMK1C1104A < 50ps
– LMK1C1106 and LMK1C1108 < 55ps
• Extremely low additive jitter:
– LMK1C1102A, LMK1C1103A and
LMK1C1104A
• 7.5fs typical at VDD = 3.3V
• 10fs typical at VDD = 2.5V
• 19.2fs typical at VDD = 1.8V
– LMK1C1106A and LMK1C1108A
• 12fs typical at VDD = 3.3V
• 15fs typical at VDD = 2.5V
• 28fs typical at VDD = 1.8V
• Very low propagation delay < 3ns
• Asynchronous output enable
• Supply voltage: 3.3V, 2.5V, or 1.8V
– Fail-safe inputs: 3.3V tolerant input at all supply
voltages
• fmax = 250MHz for 3.3V
fmax = 200MHz for 2.5V or 1.8V
• Operating temperature range: –40°C to 125°C

2 Applications
• Factory automation & control
• Telecommunications equipment
• Data center & enterprise computing
• Grid infrastructure
• 1PPS Applications
• Motor drives
• Medical imaging

3 Description
The LMK1C110xA is a modular, high-performance,
low-skew, general-purpose clock buffer family from
Texas Instruments. The entire family is designed with
a modular approach in mind. Five different fan-out
variations, 1:2, 1:3, 1:4, 1:6 and 1:8 are available.
All of the devices within this family are pin-compatible
to each other and backwards compatible to the
CDCLVC110x family for easy handling.
The LMK1C110xA supports a asynchronous output
enable control (1G) which switches the outputs into a
low state when 1G is low. Asynchronous enable and
disable is helpful for 1PPS applications and DC inputs
operations. These devices have a fail-safe input that
prevents oscillation at the outputs in the absence of
an input signal and allows for input signals before
VDD is supplied.