SN74LVC1G17: checking on Voh spec

ajayt

Genius 9555 points

Part Number: SN74LVC1G17

HI Team,

Would you happen to know what the Voh variation is over temp and process(part to part) on a set 16mA load?

The data sheet has a 2.4V min. Voh at 3V Vcc when driving a 16mA load.

The 600mV drop from Vcc to Voh is due to the IR drop of the Rdson of the top FET?.

Is there another buffer that has better driving capability to get some more margin?

Thanks much.

over 7 years ago

0 Emrys Maier over 7 years ago

TI__Guru* 97666 points

Hi ajayt,
Our char data shows an average VOH of 2.778V (25C), min/max 2.741V / 2.758V (125C), min/max 2.800V / 2.820V (-40C) for the LVC family output driver.

No, there isn't a stronger driver available in logic -- LVC has the strongest output drivers for this type of device. You can either parallel channels or add an external driver (discrete BJT or MOSFET).

Can you tell me about the application? What needs to both drive 16mA and meet >2.4V @ 3V supply? The only thing I can imagine is driving an indicator LED, but there are so many 1mA options out there, I can't think of another good reason.

0 ajayt over 7 years ago in reply to Emrys Maier

TI__Genius 9555 points

What Vcc and Iol are the char. Data based on?

Thanks.

0 Emrys Maier over 7 years ago in reply to ajayt

TI__Guru* 97666 points

Hi Ajayt,
3V, 16mA.... what you asked for?

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SN74LVC1G17: checking on Voh spec