ZHCSKT0H November 1998 – February 2020 CD4066B
PRODUCTION DATA.
In applications that employ separate power sources to drive VDD and the signal inputs, the VDD current capability should exceed VDD/RL (RL = effective external load of the four CD4066B device bilateral switches). This provision avoids any permanent current flow or clamp action on the VDD supply when power is applied or removed from the CD4066B device.
In certain applications, the external load-resistor current can include both VDD and signal-line components. To avoid drawing VDD current when switch current flows into pins 1, 4, 8, or 11, the voltage drop across the bidirectional switch must not exceed 0.8 V (calculated from ron values shown).
No VDD current flows through RL if the switch current flows into pins 2, 3, 9, or 10.