Hi,
Any comparator IC would do the job. Your two waveforms are not mirror-image inversions of each other, but I guess that's sloppy drawing
? A suitable comparator is the LM311 (8 pin IC). And attached is a circuit simulation screen-dump from LTSpice using a Linear Tech comparator, the LT1017. You can use the same value resistors for the LM311 (the values are not critical, but try keeping R1 = R2). The simulation waveform is on the top of the uploaded image. The Blue waveform is the voltage source V2, the green is the output from the comparator.
If you are not restricted to 8-pin ICs then a simpler solution would be to use any of the 4000 series CMOS inverting gate arrays, eg the CD4011 Quad 2-input NAND gate array. Select any one gate, tie the inputs together, connect the voltage you want to invert to the tied inputs, and the voltage at the output is the inverted form you want.