DS90UB928Q-Q1: IOL v.s. VOL data of SCL/SDA port

NOBUO FUJIHARA

Genius 9355 points

Part Number: DS90UB928Q-Q1
Other Parts Discussed in Thread: DS90UB928Q

Hi Champs,

My customer required VOL_max value of SCL/SDA at IOL=2mA and IOL=3mA.

Could you support this requirement?

Best regaards,

Nobuo

over 7 years ago

0 Palaniappan Manickam over 7 years ago

TI__Genius 10475 points

Hello,
Please refer to the DS90UB928Q datasheet table 7.9 (DC and AC serial control bus characteristics) for the VOL max specification of SDA/SCL. The IOL value specified in the table is what we have the spec for.

0 NOBUO FUJIHARA over 7 years ago in reply to Palaniappan Manickam

TI__Genius 9355 points

Hello, Thanks for the reply.

Table in clause 7.9 defines VOL with IOL=1.25mA condition, but customer would like to know VOL with IOL=2mA and 3mA condition.
VOL maximum is independent of IOL if IOL<3mA?

0 Palaniappan Manickam over 7 years ago in reply to NOBUO FUJIHARA

TI__Genius 10475 points

Hello,
The VOL max spec should be for a specific current load as listed in the test conditions.

0 NOBUO FUJIHARA over 7 years ago in reply to Palaniappan Manickam

TI__Genius 9355 points

It's OK with reference data.
Can you provide VOL v.s. IOL relation, with the condition of IOL=1.25mA, 2mA and 3mA?

0 Palaniappan Manickam over 7 years ago in reply to NOBUO FUJIHARA

TI__Genius 10475 points

Hello,
This is spec'ed for the 1.25 mA IOL load in the 928 device and it looks like that is what we have the data for. No reference data is available for the other current load values you specified.

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DS90UB928Q-Q1: IOL v.s. VOL data of SCL/SDA port