TXS0104E: Drive

user6235192

Part Number: TXS0104E

Hello,

Are there any precautions for the TXS0104 output driver? Is there a restriction that the capacitive load is up to 70pf like the TXB series?

over 2 years ago

0 Clemens Ladisch over 2 years ago

Guru 243110 points

The TXS has edge accelerators which drive high for a short time (like the TXB). If the capacitive load is larger than 70 pF, the output voltage might not reach V_CC immediately.

But the TXS has integrated pull-up resistors, so the output voltage will rise eventually. This might or might not be fast enough for you.

0 user6235192 over 2 years ago in reply to Clemens Ladisch

Prodigy 65 points

Thanks,

Please tell me about the following. I'm assuming it will be used with low speed interface like I2C (400KHz).

Their capacitive load is greater than 70pF depending on the trace length and cable.

Is there any problem?

＞But the TXS has integrated pull-up resistors, so the output voltage will rise eventually. This might or might not be fast enough for you.

0 Clemens Ladisch over 2 years ago in reply to user6235192

Guru 243110 points

It's fast enough for I²C. The edge accelerators would be needed to reach 2000 kHz.

0 user6235192 over 2 years ago in reply to Clemens Ladisch

Prodigy 65 points

I understand that TXS is fast enough for I²C and UART.

But, Do we have to consider that the capacitive load exceeds 70pF ?

TXS has a pull-up resistor, so don't worry about it?

0 Clemens Ladisch over 2 years ago in reply to user6235192

Guru 243110 points

A high capacitive load limits only the speed.

Logic

Logic forum

TXS0104E: Drive