DS90LV018A: About Drive Strength for DS90LV018A

Satoshi Okamoto

Part Number: DS90LV018A
Other Parts Discussed in Thread: SN74AUC1G125

Hi There,

We are considering the adoption of "DS90LV018ATMX/NOPB".

Since the system in the second stage is 1.8V, it is necessary to divide the voltage.
Attenuates at 68 Ω/ 75Ω. ( 75Ω / (68Ω+75Ω) * 3.3V ≒ 1.731V )

I want to reduce the load because the frequency is high（100MHz）.
Therefore, I want to know the output current driven.

How much drive output current is possible?

Best regards

- satoshi

0 Clemens Ladisch over 5 years ago

Guru 325070 points

23 mA is way too much. V_OH is measured at 0.4 mA. You would need 3.9 kΩ / 4.7 kΩ.

I would recommend a fast CMOS buffer with an overvoltage-tolerant input, e.g., the SN74AUC1G125.

0 Satoshi Okamoto over 5 years ago in reply to Clemens Ladisch

Hi There,

Thank you for your answer.

I thought the drive current was large.
We employ attenuators and buffers.

Best regards
- satoshi

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