Low cost, low power, low speed SPST switch recommendation

Hi,

I have two major circuits on my board, one for ECG and one for Pulse Oximeter and they are both powered by the same 3.0V regulator. I want to be able to shut off the pulse oximeter circuit to save power. The pulse oximeter circuit draws at most 50mA at 3.0V, but probably averages less than 4.2mA.  Here is the circuit, the switch I need to add is shown in red:

The control line PC6 is a direct ouput from a Stellaris LM3S5P56 which has a 3.3V power supply. The voltage output level of PC6 is minimum high of 2.4V and minimum low of 0.4V. 

PC6 has multiple driver currents and pull-up/pull-down configurations that it can be set to that are internal to the chip.  The output current strength can be 2mA, 4mA, 8mA, or 8mA with slew-rate control. The output can be configured as standard push-pull, or with weak pull up, or with weak pull down (please suggest the best configuration with your switch recommendation).

Speed is unimportant as switching will be done sporadically under the user control. However, cost, power consumption, and part availability are all very important.

The power to the switch can be provided from the 3.0V for the pulse ox (VCC_3_0), but there is also a 3.3V and 5.0V supply.

Peak current through the switch is < 50mA. Average current is < 10mA.

I'm proposing a SN74LVC1G3157 based on advice I have already received on another switch related question in this forum:

Thanks in advance for your help!

Kind regards,

Kevin Kreger