Home Clocks & timing Clock buffers
Home
Clocks & timing
Clock buffers

LMK1D2102

ACTIVE

Dual bank 2-channel output LVDS 1.8-V, 2.5-V, and 3.3-V buffer

Order now
Data sheet

LMK1D2102

ACTIVE
Data sheet Order now

Product details

Number of outputs 4 Additive RMS jitter (typ) (fs) 50 Core supply voltage (V) 1.8, 2.5, 3.3 Output supply voltage (V) 1.8, 2.5, 3.3 Output skew (ps) 20 Operating temperature range (°C) -40 to 105 Rating Catalog Output type LVDS Input type HCSL, LP-HCSL, LVCMOS, LVDS, LVPECL
Number of outputs 4 Additive RMS jitter (typ) (fs) 50 Core supply voltage (V) 1.8, 2.5, 3.3 Output supply voltage (V) 1.8, 2.5, 3.3 Output skew (ps) 20 Operating temperature range (°C) -40 to 105 Rating Catalog Output type LVDS Input type HCSL, LP-HCSL, LVCMOS, LVDS, LVPECL
VQFN (RGT) 16 9 mm² 3 x 3
  • High-performance LVDS clock buffer family: up to 2GHz
    • Dual 1:2 differential buffer
    • Dual 1:4 differential buffer
  • Supply voltage: 1.71V to 3.465V
  • Fail-safe input operation
  • Low additive jitter: < max 60fs RMS in 12kHz to 20MHz at 156.25MHz
    • Very low phase noise floor: -164dBc/Hz (typical)
  • Very low propagation delay < 575ps max
  • Output skew of 20ps max
  • Universal inputs accept LVDS, LVPECL, LVCMOS, HCSL and CML signal levels.
  • LVDS reference voltage, VAC_REF, available for capacitive coupled inputs
  • Industrial temperature range: –40°C to 105°C
  • Packaged in
    • LMK1D2102: 3mm × 3mm, 16-Pin VQFN
    • LMK1D2104: 5mm × 5mm, 28-Pin VQFN
  • High-performance LVDS clock buffer family: up to 2GHz
    • Dual 1:2 differential buffer
    • Dual 1:4 differential buffer
  • Supply voltage: 1.71V to 3.465V
  • Fail-safe input operation
  • Low additive jitter: < max 60fs RMS in 12kHz to 20MHz at 156.25MHz
    • Very low phase noise floor: -164dBc/Hz (typical)
  • Very low propagation delay < 575ps max
  • Output skew of 20ps max
  • Universal inputs accept LVDS, LVPECL, LVCMOS, HCSL and CML signal levels.
  • LVDS reference voltage, VAC_REF, available for capacitive coupled inputs
  • Industrial temperature range: –40°C to 105°C
  • Packaged in
    • LMK1D2102: 3mm × 3mm, 16-Pin VQFN
    • LMK1D2104: 5mm × 5mm, 28-Pin VQFN

The LMK1D210x clock buffer distributes two clock inputs (IN0 and IN1) to a total of up to 8 pairs of differential LVDS clock outputs (OUT0, OUT7) with minimum skew for clock distribution. Each buffer block consists of one input and up to 4 LVDS outputs. The inputs can either be LVDS, LVPECL, HCSL, CML or LVCMOS.

The LMK1D210x is specifically designed for driving 50Ω transmission lines. In case of driving the inputs in single-ended mode, the appropriate bias voltage as shown in 1.8V, 2.5V, 3.3V LVCMOS Clock Driver Connected to LMK1D210x Input must be applied to the unused negative input pin.

Using the control pin (EN), output banks can either be enabled or disabled. If this pin is left open, two buffers with all outputs are enabled, if switched to a logic "0", both banks with all outputs are disabled (static logic "0"), if switched to a logic "1", one bank and the outputs are disabled while another bank with the outputs are enabled. The part supports a fail-safe function. The device further incorporates an input hysteresis which prevents random oscillation of the outputs in the absence of an input signal.

The device operates in 1.8V or 2.5V or 3.3V supply environment and is characterized from –40°C to 105°C (ambient temperature). The LMK1D210x package variant is shown in the table below:

The LMK1D210x clock buffer distributes two clock inputs (IN0 and IN1) to a total of up to 8 pairs of differential LVDS clock outputs (OUT0, OUT7) with minimum skew for clock distribution. Each buffer block consists of one input and up to 4 LVDS outputs. The inputs can either be LVDS, LVPECL, HCSL, CML or LVCMOS.

The LMK1D210x is specifically designed for driving 50Ω transmission lines. In case of driving the inputs in single-ended mode, the appropriate bias voltage as shown in 1.8V, 2.5V, 3.3V LVCMOS Clock Driver Connected to LMK1D210x Input must be applied to the unused negative input pin.

Using the control pin (EN), output banks can either be enabled or disabled. If this pin is left open, two buffers with all outputs are enabled, if switched to a logic "0", both banks with all outputs are disabled (static logic "0"), if switched to a logic "1", one bank and the outputs are disabled while another bank with the outputs are enabled. The part supports a fail-safe function. The device further incorporates an input hysteresis which prevents random oscillation of the outputs in the absence of an input signal.

The device operates in 1.8V or 2.5V or 3.3V supply environment and is characterized from –40°C to 105°C (ambient temperature). The LMK1D210x package variant is shown in the table below:
filter Find other Clock buffers
Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Similar functionality to the compared device
LMK1D1204 ACTIVE 4-channel output LVDS 1.8-V buffer Same performance with MUXed 1:4

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 1
Top documentation Type Title Format options Date
* Data sheet LMK1D210x Low Additive Jitter LVDS Buffer datasheet (Rev. C) PDF | HTML 27 Feb 2026

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LMK1D1208EVM — LMK1D1208 evaluation module for low jitter 2:8 LVDS fan-out buffer

LMK1D1208 is a high-performance, low additive jitter LVDS clock buffer with two differential inputs and eight LVDS outputs. This evaluation module (EVM) is designed to demonstrate the electrical performance of the LMK1D1208. This EVM can also be used to evaluate other 28-pin devices within the (...)
User guide: PDF | HTML
Not available on TI.com
Simulation model

LMK1DX IBIS Model (Rev. B)

SNAM251B.ZIP (67 KB) - IBIS Model
Download
Design tool

PLLATINUMSIM-SW — PLL loop filter, phase noise, lock time, and spur simulation tool

PLLATINUMSIM-SW is a simulation tool that allows users to create detailed designs and simulations of our PLLatinum™ integrated circuits, which include the LMX series of phase-locked loops (PLLs) and synthesizers.

Supported products & hardware

Supported products & hardware
Download options
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Request
Package Pins CAD symbols, footprints & 3D models
VQFN (RGT) 16 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos