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correct a tri state op amp IS THERE 1 ??instead of a quad op amp and a 4016is there a quad o amp with a 2nd state for high impedance on driving off floating
gerald
pi out of 24 ok otherwise 2c 14 pin dipsI dont think a quad opamp with a tri-state enable for each amplifier exists. That would be four pins per opamp (+,-,out, En) plus Vds and Vss for a total of 16+2 pins = 18 pins. Maybe in Surface Mount. Check National.com or TI.com.
LM358 and LM2904 - Low Power Dual Operational Amplifier use 2 of them.