Data Sheet
Table Of Contents
- 1 Schematic diagrams
- 2 Absolute maximum ratings and operating conditions
- 3 Electrical characteristics
- Table 3. Tamb = +25˚ C, VCC = +5 V to +15 V (unless otherwise specified)
- Figure 3. Minimum pulse width required for triggering
- Figure 4. Supply current versus supply voltage
- Figure 5. Delay time versus temperature
- Figure 6. Low output voltage versus output sink current
- Figure 7. Low output voltage versus output sink current
- Figure 8. Low output voltage versus output sink current
- Figure 9. High output voltage drop versus output
- Figure 10. Delay time versus supply voltage
- Figure 11. Propagation delay versus voltage level of trigger value
- 4 Application information
- 5 Package information
- 6 Ordering information
- 7 Revision history
Application information NE555 - SA555 - SE555
14/20 Doc ID 2182 Rev 6
Figure 21. 50% duty cycle oscillator
Note that this circuit will not oscillate if R
B
is greater than 1/2 R
A
because the junction of R
A
and R
B
cannot bring pin 2 down to 1/3 V
CC
and trigger the lower comparator.
4.6 Additional information
Adequate power supply bypassing is necessary to protect associated circuitry. The
minimum recommended is 0.1 µF in parallel with 1 µF electrolytic.
Out
R
A
C
NE555
2
4
3
1
5
6
7
8
V
CC
51k
Ω
R
B
22k
Ω
0.01μF
V
CC
0.01μF