Hi Team,
A customer simulated the IBIS model of SN74LVC1G17 and noticed a 45mA current spike appeared on Pin A input. Here are the details of his inquiry.
"The specific input model from the SN74LVC1G17 was for 5 V logic.
LVC1G17_IN_50
Model_type Input
Vinl=1.35
Vinh=3.85
The SN74LVC1G17 pin A input was being driven by a generic CMOS driver. The resulting 45 mA current spike on the rising edge of the input signal has a pulse width of ~0.5 ns. The driver was connected directly to the pin A of the SN74LVC1G17 without series termination or transmission line model. Adding a series resistor and transmission line (TD = 100 ns & Zo = 50 Ω) between the driver and receiver dampened the current spike to ~32 mA."
Is this 45mA current spike an error in the IBIS model?
Regards,
Danilo
