NE555D STMicroelectronics, NE555D Datasheet - Page 12

• Manufacturer Part Number: NE555D
• Description: IC TIMER SINGLE BIPOLAR 8-SOIC
• Manufacturer: STMicroelectronics
• Type: 555 Type, Timer/Oscillator (Single)r

Specifications of NE555D

• Frequency: 500kHz
• Voltage - Supply: 4.5 V ~ 16 V
• Current - Supply: 10mA
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 8-SOIC (3.9mm Width)
• Number Of Internal Timers: 1
• Supply Voltage (max): 16 V
• Supply Voltage (min): 4.5 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Count: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-1962-5; 497-2990-5; 497-2990-5

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