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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.
SE555 Maximum Ratings
SYMBOL
PARAMETER
RATING
UNIT
Supply voltage
VCC
SE555
+18
V
NE555, SE555C, SA555
+16
V
PD
Maximum allowable power dissipation1
600
mW
TA
Operating ambient temperature range
NE555
0 to +70
°C
SA555
-40 to +85
°C
SE555, SE555C
-55 to +125
°C
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 temperaturesabove 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
SE555 Features
• Turn-off time less than 2ms • 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
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.
SE555C Maximum Ratings
SYMBOL
PARAMETER
RATING
UNIT
Supply voltage
VCC
SE555
+18
V
NE555, SE555C, SA555
+16
V
PD
Maximum allowable power dissipation1
600
mW
TA
Operating ambient temperature range
NE555
0 to +70
°C
SA555
-40 to +85
°C
SE555, SE555C
-55 to +125
°C
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 temperaturesabove 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
SE555C Features
• Turn-off time less than 2ms • 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