Timer. 555 Datasheet

555 Timer. Datasheet pdf. Equivalent

555 Datasheet
Recommendation 555 Datasheet
Part 555
Description Timer
Feature 555; INTEGRATED CIRCUITS NE/SA/SE555/SE555C Timer Product data Supersedes data of 1994 Aug 31 Philips Se.
Manufacture Philips
Datasheet
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Philips 555
INTEGRATED CIRCUITS
NE/SA/SE555/SE555C
Timer
Product data
Supersedes data of 1994 Aug 31
Philips
Semiconductors
2003 Feb 14



Philips 555
Philips Semiconductors
Timer
Product data
NE/SA/SE555/SE555C
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 200 mA.
FEATURES
Turn-off time less than 2 µs
Max. operating frequency greater than 500 kHz
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
APPLICATIONS
Precision timing
Pulse generation
Sequential timing
Time delay generation
Pulse width modulation
PIN CONFIGURATION
D and N Packages
GND 1
TRIGGER 2
OUTPUT 3
RESET 4
8 VCC
7 DISCHARGE
6 THRESHOLD
5 CONTROL VOLTAGE
SL00349
Figure 1. Pin configuration
BLOCK DIAGRAM
VCC
8
R
THRESHOLD 6 COMPARATOR
5 CONTROL
VOLTAGE
R
COMPARATOR
R
2
TRIGGER
7
DISCHARGE
FLIP FLOP
4
RESET
ORDERING INFORMATION
DESCRIPTION
8-Pin Plastic Small Outline (SO) Package
8-Pin Plastic Dual In-Line Package (DIP)
8-Pin Plastic Small Outline (SO) Package
8-Pin Plastic Dual In-Line Package (DIP)
8-Pin Plastic Dual In-Line Package (DIP)
8-Pin Plastic Dual In-Line Package (DIP)
OUTPUT
STAGE
3
OUTPUT
1
GND
Figure 2. Block Diagram
SL00350
TEMPERATURE RANGE
0 to +70 °C
0 to +70 °C
–40 °C to +85 °C
–40 °C to +85 °C
–55 °C to +125 °C
–55 °C to +125 °C
ORDER CODE
NE555D
NE555N
SA555D
SA555N
SE555CN
SE555N
DWG #
SOT96-1
SOT97-1
SOT96-1
SOT97-1
SOT97-1
SOT97-1
2003 Feb 14
2



Philips 555
Philips Semiconductors
Timer
Product data
NE/SA/SE555/SE555C
EQUIVALENT SCHEMATIC
VCC
Q5
R1
4.7 k
R2
330
Q6 Q7
R3
4.7 k
R4
1 k
Q9
Q8
FM
CONTROL VOLTAGE
R7
5 k
R12
6.8
k
Q21
Q22
Q19 R13
3.9 k
THRESHOLD
TRIGGER
RESET
DISCHARGE
GND
Q1
Q2 Q3
Q4
R5
10 k
Q11 Q12
R8
5 k
Q10 Q13
Q25
Q14
R6
100 k
R9
5 k
R16
100
R10
82 k
CB
Q18
E
R11
4.7 k
Q23
CB
Q20
OUTPUT
Q16
Q15
Q17
R14
220
Q24
R15
4.7 k
NOTE: Pin numbers are for 8-Pin package
Figure 3. Equivalent schematic
SL00351
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
RATING
Supply voltage
VCC SE555
NE555, SE555C, SA555
+18
+16
PD
Tamb
Maximum allowable power dissipation1
Operating ambient temperature range
NE555
SA555
SE555, SE555C
600
0 to +70
–40 to +85
–55 to +125
Tstg Storage temperature range
–65 to +150
TSOLD
Lead soldering temperature (10 sec max)
+230
NOTE:
1. The junction temperature must be kept below 125 °C for the D package and below 150°C for the N package.
At ambient temperatures above 25 °C, where this limit would be derated by the following factors:
D package 160 °C/W
N package 100 °C/W
UNIT
V
V
mW
°C
°C
°C
°C
°C
2003 Feb 14
3





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