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Philips Semiconductors Linear Products |
Product specification |
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Timer |
NE/SA/SE555/SE555C |
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DESCRIPTION
The 555 monolithic timing circuit is a highly stable controller capable of producing accurate time delays, or oscillation. In the time delay mode of operation, the time is precisely controlled by one external resistor and capacitor. For a stable operation as an oscillator, the free running frequency and the duty cycle are both accurately controlled with two external resistors and one capacitor. The circuit may be triggered and reset on falling waveforms, and the output structure can source or sink up to 200mA.
FEATURES
•Turn-off time less than 2μs
•Max. operating frequency greater than 500kHz
•Timing from microseconds to hours
•Operates in both astable and monostable modes
•High output current
•Adjustable duty cycle
•TTL compatible
•Temperature stability of 0.005% per °C
PIN CONFIGURATIONS
D, N, FE Packages
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GND |
1 |
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8 |
VCC |
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TRIGGER |
2 |
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7 |
DISCHARGE |
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OUTPUT |
3 |
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6 |
THRESHOLD |
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RESET |
4 |
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5 |
CONTROL VOLTAGE |
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F Package
GND |
1 |
14 |
VCC |
NC |
2 |
13 |
NC |
TRIGGER |
3 |
12 |
DISCHARGE |
OUTPUT |
4 |
11 |
NC |
NC |
5 |
10 |
THRESHOLD |
RESET |
6 |
9 |
NC |
NC |
7 |
8 |
CONTROL VOLTAGE |
TOP VIEW
APPLICATIONS
•Precision timing
•Pulse generation
•Sequential timing
•Time delay generation
•Pulse width modulation
ORDERING INFORMATION
DESCRIPTION |
TEMPERATURE RANGE |
ORDER CODE |
DWG # |
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8-Pin Plastic Small Outline (SO) Package |
0 to +70°C |
NE555D |
0174C |
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8-Pin Plastic Dual In-Line Package (DIP) |
0 to +70°C |
NE555N |
0404B |
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8-Pin Plastic Dual In-Line Package (DIP) |
-40°C to +85°C |
SA555N |
0404B |
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8-Pin Plastic Small Outline (SO) Package |
-40°C to +85°C |
SA555D |
0174C |
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8-Pin Hermetic Ceramic Dual In-Line Package (CERDIP) |
-55°C to +125°C |
SE555CFE |
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8-Pin Plastic Dual In-Line Package (DIP) |
-55°C to +125°C |
SE555CN |
0404B |
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14-Pin Plastic Dual In-Line Package (DIP) |
-55°C to +125°C |
SE555N |
0405B |
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8-Pin Hermetic Cerdip |
-55°C to +125°C |
SE555FE |
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14-Pin Ceramic Dual In-Line Package (CERDIP) |
0 to +70°C |
NE555F |
0581B |
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14-Pin Ceramic Dual In-Line Package (CERDIP) |
-55°C to +125°C |
SE555F |
0581B |
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14-Pin Ceramic Dual In-Line Package (CERDIP) |
-55°C to +125°C |
SE555CF |
0581B |
August 31, 1994 |
346 |
853-0036 13721 |
Philips Semiconductors Linear Products |
Product specification |
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Timer |
NE/SA/SE555/SE555C |
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BLOCK DIAGRAM
VCC
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8 |
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R |
CONTROL |
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VOLTAGE |
THRESH- |
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5 |
OLD |
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6 |
COMPARATOR |
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R |
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TRIGGER |
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COMPARATOR |
2 |
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R |
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DIS- |
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CHARGE |
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7 |
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RESET |
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FLIP FLOP |
4 |
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OUTPUT |
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STAGE |
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3 |
1 |
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OUTPUT |
GND |
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EQUIVALENT SCHEMATIC |
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FM |
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CONTROL VOLTAGE |
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VCC |
R1 |
R2 |
R3 |
R |
R |
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R12 |
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4.7K |
330 |
4.7 |
4 |
7 |
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6.8K |
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K |
1 |
5 |
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K |
K |
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Q6 |
Q7 |
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Q21 |
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Q5 |
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Q9 |
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Q22 |
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Q8 |
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Q19 |
R13 |
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3.9K |
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Q1 |
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Q4 |
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R1 |
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0 |
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THRESHOLD |
Q2 |
Q3 |
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82. |
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OUTPUT |
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K |
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Q23 |
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CB |
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C |
B |
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R11 |
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Q18 |
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R5 |
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E |
4.7K |
Q20 |
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10 |
Q11 Q12 |
R8 |
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5K |
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K |
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Q17 |
R14 |
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Q10 |
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Q13 |
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TRIGGER |
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220 |
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Q16 |
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Q24 |
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Q25 |
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RESET |
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Q15 |
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R15 |
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R6 |
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R9 |
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DISCHARGE Q14 |
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4.7K |
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5K |
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100K |
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GND |
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R16 |
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100 |
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NOTE: Pin numbers are for 8-Pin package |
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August 31, 1994 |
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347 |
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Philips Semiconductors Linear Products |
Product specification |
|
|
|
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Timer |
NE/SA/SE555/SE555C |
|
|
|
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ABSOLUTE MAXIMUM RATINGS
SYMBOL |
PARAMETER |
RATING |
UNIT |
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Supply voltage |
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VCC |
SE555 |
+18 |
V |
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NE555, SE555C, SA555 |
+16 |
V |
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P |
Maximum allowable power dissipation1 |
600 |
mW |
D |
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TA |
Operating ambient temperature range |
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NE555 |
0 to +70 |
°C |
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SA555 |
-40 to +85 |
°C |
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SE555, SE555C |
-55 to +125 |
°C |
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TSTG |
Storage temperature range |
-65 to +150 |
°C |
TSOLD |
Lead soldering temperature (10sec max) |
+300 |
°C |
NOTES:
1.The junction temperature must be kept below 125°C for the D package and below 150°C for the FE, N and F packages. At ambient temperatures above 25°C, where this limit would be derated by the following factors:
D package 160°C/W FE package 150°C/W
N package 100°C/W
F package 105°C/W
August 31, 1994 |
348 |