Details

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BUY SE555P https://www.utsource.net/itm/p/72724.html
Standard Timer Single -55°C 125°C 8-Pin PDIP Tube

Parameter	Symbol	Min	Typ	Max	Unit
Supply Voltage	Vcc	4.5	-	16	V
Supply Current	ICC	-	3	10	mA
Trigger Input	Vtr	0.1	-	1.1	V
Threshold Input	Vth	2/3Vcc	-	2/3Vcc	V
Control Voltage	Vc	0.7	-	18	V
Reset Input	Vr	0.7	-	18	V
Output Voltage	Vo	0	Vcc-1.5	Vcc-1.5	V
Output Current	Io	-	200	-	μA
Maximum Power Dissipation	Pd	-	625	-	mW
Operating Temperature	Ta	-55	-	125	°C
Storage Temperature	Ts	-65	-	150	°C

Instructions for Using the SE555P Timer IC

1. Power Supply:

   • Connect the supply voltage (Vcc) between pin 8 and ground (pin 1). The SE555P can operate from 4.5V to 16V.

2. Trigger Input (Pin 2):

   • The trigger input is used to start the timing cycle. It should be pulled low (below 1/3 Vcc) to start the timer.

3. Threshold Input (Pin 6):

   • The threshold input is used to stop the timing cycle. It should be pulled high (above 2/3 Vcc) to reset the timer.

4. Control Voltage (Pin 5):

   • This pin can be used to modify the internal reference voltages. If not used, it should be bypassed to ground with a 10nF capacitor.

5. Reset Input (Pin 4):

   • The reset input can be used to disable the timer. It should be held high (Vcc) to enable the timer. Pulling it low will reset the timer.

6. Output (Pin 3):

   • The output pin provides the timing signal. It can drive loads up to 200μA. For higher current loads, use a transistor or other driver circuit.

7. Discharge (Pin 7):

   • This pin is used to discharge the external capacitor during the timing cycle. It is internally connected to the output and ground.

8. Ground (Pin 1):

   • Connect this pin to the ground of your power supply.

9. Capacitor and Resistor Selection:

   • For monostable mode, connect a resistor between pin 7 and Vcc, and a capacitor between pin 6 and ground.
   • For astable mode, connect a resistor between pin 7 and Vcc, and another resistor between pin 7 and pin 6. Connect a capacitor between pin 6 and ground.

10. Thermal Considerations:

    • Ensure that the device is not operated beyond its maximum power dissipation. Use a heat sink if necessary.

11. Operating and Storage Temperature:

    • The SE555P can operate from -55°C to 125°C and can be stored from -65°C to 150°C.

12. Handling Precautions:

    • The SE555P is sensitive to static electricity. Handle the device with care and use proper ESD protection.

By following these instructions, you can effectively use the SE555P timer IC in various applications such as oscillators, timers, and pulse generators.

(For reference only)