Configurable Delay Timer Chip / Delay Chip / Trigger Delay IC / 2s-1000h Timer IC
Dimensions approximately 12mm x 12mm, operating voltage 2V-5V, timing range can be set from 2 seconds to 1000 hours, details are as follows:
Function and Design Description:
1. The circuit should be connected as required and the timing resistor and power supply voltage should be set correctly;
2. Before triggering, the output is at a high level;
3. The trigger is effective on the falling edge; after triggering, the output immediately goes low and the circuit starts timing;
4. After the set timing period elapses, the output returns to high level, waiting for the next falling edge trigger;
5. The chip is a non-retriggerable type, meaning that if triggered again while the output is low, the trigger will be ineffective;
6. The falling edge trigger refers to the moment of transition from high level to low level;
7. Generally, high level refers to VCC voltage, and low level refers to 0-0.3V or GND, as long as it meets the level requirements;
8. The trigger can be connected to a momentary switch to ground, a microcontroller IO port, or any other digital circuit that can generate a falling edge for effective triggering;
9. It can be designed to trigger on power-up by shorting the trigger to ground; it will trigger upon power-up, and after the timing period, the output will return to high level, waiting for the next falling edge trigger.
Chip Features:
1. Uses CMOS technology for low power consumption, lead-free and environmentally friendly.
2. The low output can directly drive an LED (please add a current limiting resistor), and the high output can drive a transistor (please add a current limiting resistor).
3. The timing can be adjusted using resistors, with 8*N (N=0,1,2,3) timing selections, adjustable from 2s to 1000h.
4. Can choose between trigger timing and power-up timing with the trigger grounded.
5. Standby output is high level, falling edge triggers, after triggering the output goes low, and after the delay ends, it returns to high level.
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