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.