DS90LV012A: Convert 1.8V signals to LVDS with minimal propagation delay

Jinho Gwon

Part Number: DS90LV012A
Other Parts Discussed in Thread: SN74AXC1T45,

Dear TI Team,

A schematic that converts the 1.8V signal to LVDS is required.

The circuit is designing by referring to the following document.

SNLA307–December 2018

How to Support 1.8-V Signals Using a 3.3-V LVDS Driver/Receiver + Level Shifter

The problem is this schematic will be used in modules that require high precision. (Ex. LiDAR, etc.)

DS90LV012A and SN74AXC1T45 each have propagation delay max of 3.5ns/4ns, so the error is expected to be high.

Please recommend a way to minimize propagation delay.

+1 Clemens Ladisch 8 months ago

Guru 279750 points

An LVDS receiver acts like a comparator, so you can use any LVDS buffer to receive a 1.8 V single-ended signal. See How to Use a 3.3-V LVDS Buffer as a Low-Voltage LVDS Driver.

0 Jinho Gwon 8 months ago in reply to Clemens Ladisch

Hi Clemens,

Thank you very much ! I'll take a look to this doc.

I expect this solves the problem.

+1 Amy 8 months ago

Thank you Clemens for sharing this application note.

Hi Jinho, as the TI application note details, an LVDS buffer can be used as a driver and will have lower propagation delay.

Regards, Amy

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