CD4066 datasheet(12/20 Pages) TI

12 / 20 page

CD4066B

CMOS QUAD BILATERAL SWITCH

SCHS051D – NOVEMBER 1998 – REVISED SEPTEMBER 2003

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

APPLICATION INFORMATION

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 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.

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 terminals 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 will flow through RL if the switch current flows into terminals 2, 3, 9, or 10.

CD4066 Datasheet(PDF) 12 Page - Texas Instruments