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LMK1C1103A
  • LMK1C1103A
  • LMK1C1103A

LMK1C1103A

ACTIVE

1.8V,2.5V or 3.3V asynchronous 3 channel output LVCMOS buffer

Texas Instruments LMK1C1103A Product Info

1 April 2026 2

Parameters

Number of outputs

3

Additive RMS jitter (typ) (fs)

19.2

Core supply voltage (V)

1.8, 2.5, 3.3

Output supply voltage (V)

1.8, 2.5, 3.3

Output skew (ps)

25

Operating temperature range (°C)

-40 to 125

Rating

Catalog

Output type

LVCMOS

Input type

LVCMOS

Package

TSSOP (PW)-8-19.2 mm² 3 x 6.4

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
  • 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

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.

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