pt7c5035 Pericom Technology Inc, pt7c5035 Datasheet - Page 2

• Manufacturer Part Number: pt7c5035
• Description: Pt7c5035 Series 1.8v High Frequency Crystal Oscillator
• Manufacturer: Pericom Technology Inc

Data Sheet
PT7C5035 series
1.8V High Frequency Crystal Oscillator
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Block Diagram
Funtion Description
Standby Function
When INHN goes LOW, the device is in standby mode. The Q output becomes high impedance and the oscillator circuit stops.
OE
Q
Oscillator
HIGH(or open)
f0 output frequency
Normal operation
LOW
High impedance
Stopped
Build-in voltage regulator
The voltage regulator generate a stable voltage supplying the oscillator, significantly reducing current consumption and crystal
current, significantly reducing the oscillator characteristics supply voltage dependency.
Power-saving Pull-up Resistor
The INHN pin pull-up resistance changes in response to the input level(HIGH or LOW).When OE is tied LOW ,the pull-up
resistance becomes large, reducing the current consumed by the resistance. When INHN is left open, pull-up resistance becomes
small, such that even if the input is affected by external noise the outputs are stable due to INHN being tied HIGH by the pull-up
resistor.
Oscillation Detector Function
The devices also feature an oscillation detector circuit. This circuit function to disable the outputs until the oscillator circuit starts.
This prevents abnormal oscillator output at oscillator start-up when power is applied or when INHN is switched.
PT0310(08/08)
2
Ver:0