SN74AVCH4T245-EP: Output Impedance

Tino Gfrörer

Part Number: SN74AVCH4T245-EP

Hello

What is the output impedance of B-port outputs, if the A-port is driven at 3.3V and the B-port at 2.5V?

Best Regards

Tino

+1 Clemens Ladisch over 1 year ago

Guru 243130 points

The B-port drive strength depends only on the B supply voltage.

The output impedance can be derived from the V_Ox/I_Ox values (see [FAQ] What is the output voltage (VOH or VOL) when the output current is X or the supply voltage is Y?). At 2.5 V, the worst-case value is 61.1 Ω; the typical value is about half that.

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