TXB0106: Maximum continuous output current

Cera Wei

Intellectual 2010 points

Part Number: TXB0106
Other Parts Discussed in Thread: SN74LV541AT, SN74LV244AT, SN74LXC8T245

Hi Team,

In datasheet, I saw the Continuous output current is +/-50mA, may I know if 50mA for each channel or 6ch totally? Thanks!

Regards,

Cera

over 4 years ago

0 Clemens Ladisch over 4 years ago

Guru 316690 points

That value is purely theoretical. Due to the output impedance of 4 kΩ, you will not be able to draw more than 1.25 mA out of each output.

0 Cera Wei over 4 years ago in reply to Clemens Ladisch

TI__Intellectual 2010 points

Hi Ladisch,

Thanks for your reply. Then seems it cannot meet my requirement. My requirement is 15mA/channel, 6ch needed, 3.3V to 5V. Do you have any recommendation?

Regards,

Cera

+1 Clemens Ladisch over 4 years ago in reply to Cera Wei

Guru 316690 points

If "3.3V to 5V" means unidirectional signals, then you can use a buffer with TTL-compatible inputs, such as the SN74LV244AT (or SN74LV541AT with flow-through pinout).

0 Cera Wei over 4 years ago in reply to Clemens Ladisch

TI__Intellectual 2010 points

Got it, thanks!

0 Dylan Hubbard over 4 years ago in reply to Cera Wei

TI__Mastermind 45725 points

Hey Cera,

If you are driving 15 mA out of 6 channels then you will violate that devices maximum current through Vcc. I recommend they use SN74LXC8T245 for this instead.

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TXB0106: Maximum continuous output current