1. Product Overview & Intended Use

️· Series: CF5035
️· Type: CMOS Function Generator/Oscillator IC
️· Crucial Note: These chips are *not* intended for applications where failure could directly harm human lives. You must obtain written permission from SEIKO NPC before using them in such critical applications.
️· Disclaimer: Specifications are subject to change without notice for product improvement.

2. Key Features & Functional Description

️· Standby Function: When the INHN pin is LOW, the device enters standby mode. This stops the oscillator and puts the Q output in a high-impedance state (effectively "off").
️· Power-Saving Pull-up Resistor: A pull-up resistor on the INHN pin changes resistance based on the input level (HIGH or LOW). A higher resistance when INHN is LOW reduces current consumption.
️· Oscillation Detector Function: This circuit prevents abnormal outputs at startup by disabling the outputs until the oscillator stabilizes.
️· Output Duty Cycle: Can be adjusted (40-60% when VDD is 1.6-2.25V, 45-55% when VDD is 2.25-3.6V)
️· Output Enable/Disable Delay Times:
- tOE (Enable): up to 2ms
- tOD (Disable): up to 200ns

3. Electrical Characteristics (Key Specs - see full datasheet for complete list)

️· Supply Voltage (VDD): 1.6V to 3.6V
️· Output Enable (INHN) Pull-up Resistance:
- RPU1: 0.4 MΩ (when INHN is LOW)
- RPU2: 30-150 kΩ (when INHN is 0.7VDD)
️· Output Rise/Fall Times (tr/tf):
- VDD = 2.25V - 3.6V: tr/tf = 1-2 ns
- VDD = 1.6V - 2.25V: tr/tf = 1.5-2.5 ns
️· Output High Voltage (VOH): (Dependent on supply voltage and load capacitance)
️· Output Low Voltage (VOL): (Dependent on supply voltage and load capacitance)
️· Input High Voltage (VIH): 0.7VDD (minimum)
️· Input Low Voltage (VIL): 0.3VDD (maximum)
️· Oscillation Stop Time: Built-in (related to tOD)
️· Oscillator Frequency: Determined by external components (not explicitly listed in this datasheet extract, as it is not a fixed frequency generator but rather an oscillator)

4. AC Characteristics

️· Rise Time (tr): 1-2 ns (VDD 2.25-3.6V), 1.5-2.5 ns (VDD 1.6-2.25V)
️· Fall Time (tf): 1-2 ns (VDD 2.25-3.6V), 1.5-2.5 ns (VDD 1.6-2.25V)

5. Measurement Circuits

The datasheet includes diagrams of measurement circuits used to determine the electrical and AC characteristics. These circuits are for reference and allow for accurate testing.

6. Important Notes & Legal Disclaimers

️· Product Intended Use: The most important disclaimer: Use in applications impacting human safety requires *prior* written approval from SEIKO NPC.
️· Specifications Subject to Change: Product specifications are subject to change without notice.
️· Intellectual Property: NPC makes no claims about freedom from intellectual property infringement by this product.
️· Export Control: Adherence to export administration laws is required.