[Lowfer] [part15] " XR " got thirsty

[Charlie , W5COV]

Andy , did you order the Standby option , or the Output Enable option ?

Lyle makes this note on them :

If the OE/ST pin is left floating, the oscillator runs continuously. When it 
is grounded, the oscillator is either placed in STANDBY or OUTPUT DISABLE 
mode, depending on the chip option. The difference is that chips with the 
STANDBY option will turn off completely when OE/ST is grounded. In chips 
with the OUTPUT ENABLE option, the oscillator keeps running but the output 
stage is turned off. There apparently is an internal pullup resistor of a 
couple of megohms on the OE/ST line, because the current from the pin is 
only about 2 microamps when it is grounded. If you want to be able to shut 
off the oscillator with a logic-level signal and minimize power consumption 
while in the disabled mode, you would want a chip with the STANDBY option. 
For rapid on/off switching, as in a CW transmitter, you'd need the OUTPUT 
ENABLE option.

Charlie , W5COV