Időkésleltetési chip/késleltetési chip/trigger késleltetés IC/2s-1000h időzítő IC beállítható
Time delay timing chip/delay chip/trigger delay IC/2s-1000h timing IC can be set
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{http://pan.baidu.com/share/link?shareid=44472&uk=4147086434} appearance is about 12 mm * 12 mm, 2 v to 5 v working voltage, timing can be set to a small 2 seconds to 1000 hours, as shown in the following description:
 
Function and Design description:
1. Connect the circuit as required and set the time resistance and supply voltage;
2. The output terminal is at a high level before the power-on is triggered.
3. The "falling edge" of the trigger end is triggered effectively. After the trigger, the output end immediately becomes low level and the circuit starts timing;
4. At the set timing time, the output terminal returns to high level and waits for the next "falling edge" to trigger;
5. The chip is non-repeat trigger type, which means that if the chip continues to trigger during the output low level after the trigger, the trigger is invalid;
6. The "falling edge" trigger at the trigger end refers to the change moment from high level to low level;
7. General 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 trigger end can be on the ground touch switch or SINGLE chip IO port or other digital circuit "falling edge" can be triggered effectively;
9. It can be designed as power-on trigger, just short circuit the trigger end to the ground, and the power-on will be triggered. When the time is up, the output will return to high level and wait for the next one
The falling edge fires again.
 
Chip features:
1. CMOS technology, low power consumption, lead free environmental protection.
2. Output low level can be directly pushed LED(add current limiting resistor), output high level can be pushed triode (add current limiting resistor).
3. Available resistance timing, 8*N(N=0.1.2.3) times timing choice, the time can be adjusted from 2s-1000h.
4. You can select trigger timing and grounding power-on timing.
5. Standby output high level, falling edge triggers, output low level after triggering, and restore high level after the delay ends.
1005003291167689 - supersel