NE555D-TR STMicroelectronics, NE555D-TR Datasheet - Page 12

• Manufacturer Part Number: NE555D-TR
• Manufacturer: STMicroelectronics
• Type: Standardr

Specifications of NE555D-TR

• # Internal Timers: 1
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (typ): 5/9/12/15V
• Operating Supply Voltage (max): 16V
• Package Type: SO
• High Level Output Current: -200mA
• Low Level Output Current: 200mA
• Pin Count: 8
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

Application information
4.3
4.4
12/20
Pulse width modulator
When the timer is connected in the monostable mode and triggered with a continuous pulse
train, the output pulse width can be modulated by a signal applied to pin 5.
the circuit.
Figure 18. Pulse width modulator
Linear ramp
When the pull-up resistor, R
source, a linear ramp is generated.
this function.
Figure 19. Linear ramp
Trigger
Output
Output
Trigger
2
3
A
2
3
, in the monostable circuit is replaced by a constant current
4
NE555
4
Figure 19
NE555
1
1
8
shows a circuit configuration that will perform
8
7
6
5
7
5
6
Modulation
or equiv.
0.01
2N4250
Input
R
μ
C
E
F
NE555 - SA555 - SE555
R
C
A
R2
R1
V
CC
Figure 18
V
CC
shows