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Texas Instruments LMK01010ISQ/NOPB — Clock & Timing ICs

LMK01010ISQ/NOPB Clock Buffer 1.6 GHz LVDS Fanout - TI

MPNLMK01010ISQ/NOPB
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Texas Instruments LMK01010ISQ/NOPB, Fanout Buffer (Distribution), Divider, 1.6 GHz max, 1:8 LVDS outputs, 3.15V-3.45V supply, -40°C to 85°C, 48-WQFN Exposed Pad

$12.2600Ref. price · indicative, final on quote
Texas Instruments LMK01010ISQ/NOPB datasheet (PDF)
Packaging48-WFQFN Exposed Pad
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LMK01010ISQ/NOPB specifications
ParameterValue
TypeFanout Buffer (Distribution), Divider
MountingSurface Mount
Supply voltage3.15V ~ 3.45V
Frequency - max1.6 GHz
Operating temperature-40°C~85°C
InputClock
OutputLVDS
PackageTape & Reel (TR)
Case48-WFQFN Exposed Pad
Number of circuits1
Ratio - Input:Output1:8
Differential - Input:OutputYes/Yes

Product details

What this 1.6 GHz fanout buffer does for your clock tree

The LMK01010ISQ/NOPB is a 1.6 GHz fanout buffer with a 1:8 input-to-output ratio, distributing a single clock input to eight LVDS outputs. It integrates a divider, so you can generate sub-rate clocks from a higher-frequency reference without an extra chip. The differential input and output path (Yes/Yes) keeps noise rejection high, critical when routing clocks across a board with mixed-signal content.

The supply range is tight: 3.15V to 3.45V. That means the 3.3V rail needs to be within ±4.5% — a standard LDO or switcher with 1% tolerance will hold it, but a noisy rail or one that droops under load risks jitter or output failure.

Package and footprint — what the 48-WQFN demands

Sourcing — active production, no end-of-life watch

Frequently asked questions

Is the LMK01010ISQ/NOPB a drop-in replacement for the LMK01010ISQ?

The LMK01010ISQ/NOPB shares the same base product number (LMK01010) and same package (48-WQFN). The /NOPB suffix indicates lead-free (RoHS) plating. If your existing BOM uses the non-NOPB variant, verify the board-level solder profile — the NOPB version requires a higher reflow peak temperature. Electrically they are identical.

Does the LMK01010ISQ/NOPB require external termination resistors for the LVDS outputs?

Yes, standard LVDS termination applies. Each differential output pair needs a 100-ohm termination resistor placed as close to the receiver input as possible. The buffer itself does not include on-die termination. The datasheet (TI literature number SNAS480) shows the recommended termination scheme.

What is the difference between LMK01010ISQ/NOPB and CDCLVP1204RGTR?

The CDCLVP1204 is a 2:4 fanout multiplexer with LVPECL outputs, while the LMK01010ISQ/NOPB is a 1:8 fanout buffer with LVDS outputs. The CDCLVP1204 accepts multiple input types (LVCMOS, LVDS, LVPECL, LVTTL) and runs from a 2.375V supply. The LMK01010ISQ/NOPB has a fixed 1:8 ratio and a tighter 3.15V-3.45V supply. They are not drop-in replacements — the output logic family and supply voltage differ.