7.3.3 Output Stage: LMV7235

The LMV7235 has an open drain that requires a pull-up resistor to a positive supply voltage for the output to switch properly. The internal circuitry is identical to the LMV7239 except that the upper P channel output device M4 is absent in the Functional Block Diagram above. When the internal output transistor is off, the output voltage will be pulled up to the external positive voltage by the external pull-up resistor. This allows the output to be OR'ed with other open drain outputs on the same bus. The output pull-up resistor can be connected to any voltage level between V- and V+ for level shifting applications.

Figure 18. LMV7235 Open Drain Output