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LMK1C110x 1.8-V, 2.5-V, and 3.3-V LVCMOS Clock Buffer Family

1 Features

•High-performance 1:2, 1:3 or 1:4 LVCMOS clock

buffer

•Very low output skew < 50 ps

•Extremely low additive jitter < 50 fs maximum

–7.5 fs typical at V

DD

= 3.3 V

–10 fs typical at V

DD

= 2.5 V

–19.2 fs typical at V

DD

= 1.8 V

•Very low propagation delay < 3 ns

•Synchronous output enable

•Supply voltage: 3.3 V, 2.5 V, or 1.8 V

–3.3-V tolerant input at all supply voltages

–Fail-safe inputs

•f

max

= 250 MHz for 3.3 V

f

max

= 200 MHz for 2.5 V and 1.8 V

•Operating temperature range: –40°C to 125°C

•Available in 8-pin TSSOP package

•Available in 8-pin WSON package

2 Applications

•Factory automation & control

•Telecommunications equipment

•Data center & enterprise computing

•Grid infrastructure

•Motor drives

•Medical imaging

3 Description

The LMK1C110x 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. Three different fan-out

variations, 1:2, 1:3, 1:4, 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.

All family members share the same high performing

characteristics such as low additive jitter, low skew,

and wide operating temperature range.

The LMK1C110x supports a synchronous output

enable control (1G) which switches the outputs into

a low state when 1G is low. 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.

The LMK1C110x family operates in a 1.8-V, 2.5-V and

3.3-V environment and are characterized for operation

from –40°C to 125°C.

Device Information

(1)

PART NUMBERPACKAGEBODY SIZE (NOM)

LMK1C1102

TSSOP (8)3.00 mm × 4.40 mmLMK1C1103

LMK1C1104

LMK1C1102

WSON (8)2.00 mm × 2.00 mm

LMK1C1104

(1)For all available packages, see the orderable addendum at

the end of the data sheet.

LVCMOSLVCMOS

LVCMOS

LVCMOS

LVCMOS

CLKIN

1G

Y0

Y1

Y2

Y3

Functional Block Diagram

LMK1C1102, LMK1C1103, LMK1C1104

SNAS791D – DECEMBER 2019 – REVISED FEBRUARY 2022

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

Produktspecifikationer