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Typo in TXS0102/0104 Datasheet for VIL max?

J Evans
Prodigy 200 points
Other Parts Discussed in Thread: TXS0104E, TXB0104

Hi!

In my design, the input device to the TXS0104E has a VOL max value of 0.4V (pg. 3). I am using 1.8V for VCCA and 3.3V for VCCB.

After checking the TXS0104 datasheet, the VIL max value is shown as "0.15V". However, in comparison, the VIL max value shown in the TXB0104 datasheet is "VCCI x 0.35 V".

I'm wondering if there is a typo in the TXS0104 datasheet and the VIL max value should be "VCCI x 0.15 V" instead of "0.15V"?

This makes quite a difference for my design: VIL= 3.3 x 0.15 = 0.495V versus VIL = 0.15V for VOL max = 0.4V.

Thanks for your help in advance!

James

  • 0
    TI__Expert 6430 points

    Hi James

    For TXS01XX serials, they are speicfic design for open-drain application. Thus, the circuits design is based on transmit gate architecture. When input is low, the tranmist gate is on and low signal pass the transmit gate. There is a voltage drop between sides of the transmit gate. The value coule be 100-200mV. Therefore, ouptut voltage should be euqal to input low voltage + dropped voltage and output voltage also is regnized as low. In gerenal, 0.4V will be regnized low in 2.3V-5.5V supply on VCCB.

    This is the reaon that Vil is 150 mV.

    Thanks 

  • 0 in reply to Wei Lang
    Prodigy 200 points

    Hi Wei,

    Thanks for your quick response, and I appreciate you clarifying this for me.

    Regards,

    James