TCA9517: Schematic review

Jeff YANG

Part Number: TCA9517

Hi team,

Would you please review below schematic? thanks!

The A-side is connected to the connector I2C, while the B-side is connected to the CPU's I2C interface.

Could you please confirm if the bias voltages connected to VCCa and VCCb are correct?
Are the pin connections for SCLa/SDAa and SCLb/SDAb hooked up properly?

0 Tyler Townsend 4 days ago

Hi Jeff,

We will respond to you by end of day tomorrow.

Regards,

Tyler

0 Jason Trinh 3 days ago

Hi Jeff,

I am looking into this and will respond by EOD.

Regards,

Jason

0 Jason Trinh 2 days ago in reply to Jason Trinh

Hi Jeff,

Please see below.

Condition	Check	Notes
VCCA within 0.9–5.5 V	Good
VCCB within 2.7–5.5 V	Good	B-side rail inside range
Pull-up resistors present on both A-side and B-side	U101, U201, U301	Required on each side independently
Every B-side device VOL must be under 0.4 V	Check	B-side pull-up resistance must be chosen so this margin holds
100 nF local decoupling on VCCA and VCCB	Good
EN pin	Good
Pinout	Good	Matches for DGK package

Regards,

Jason

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