5036 series
FUNCTIONAL DESCRIPTION
Standby Function
When OE goes LOW, the oscillator stops and the output pins (OUT, OUTN) become high impedance.
OE
HIGH (or open)
LOW
OUT, OUTN
Either f
O
or f
O
/2
High impedance
Oscillator
Normal operation
Stopped
Power-saving Pull-up Resistor
The OE pin pull-up resistance changes in response to the input level (HIGH or LOW). When OE is tied LOW
(standby state), the pull-up resistance becomes large, reducing the current consumed by the resistance. When
OE is open circuit, the pull-up resistance becomes small, decreasing the susceptibility to the effects of external
noise.
Oscillation Detector Function
The 5036 series also feature an oscillation detector circuit. This circuit functions to disable the outputs until the
oscillator circuit starts and oscillation becomes stable. This alleviates the danger of abnormal oscillator output
at oscillator start-up when power is applied or when OE is switched.
SEIKO NPC CORPORATION —10
SEIKO [ SEIKO EPSON CORPORATION ]
