(Parte 1 de 3)

July 1998

N DIP8 (Plastic Package)

D SO8 (Plastic Micropackage)

81 - GND 2 - Trigger 3 - Output 4 - Reset 5 - Control voltage 6 - Threshold 7 - Discharge

8 - VCC

PIN CONNECTIONS (top view)

.MAXIMUM OPERATING FREQUENCY GREATER THAN 500kHz

SINK 200mA .ADJUSTABLE DUTY CYCLE .TTL COMPATIBLE

.TEMPERATURE STABILITY OF 0.005% PERoC

PartNumber TemperatureRange Package ND

NE5550oC, 70oC•• SA555–40oC, 105oC•• SE555–55oC, 125oC••

The NE555 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. The NE555 is available in plastic and ceramic minidip package and in a 8-lead micropackage and in metal can package version.

NE555 SA555 - SE555

1k W

5k W

5k W

R9 5kW

4.7k W

4.7k W

6.8k W

Symbol Parameter Value Unit

Vcc Supply Voltage 18 V

ToperOperating Free Air Temperature Rangefor NE555 for SA555 for SE555

0 to 70 –40 to 105

–5 to 125

Tj Junction Temperature 150 oC TstgStorage Temperature Range–65 to 150oC

Tamb = +25oC, VCC = +5V to +15V (unless otherwise specified)

Symbol Parameter SE555NE555 - SA555Unit

Min. Typ. Max. Min. Typ. Max.

ICC Supply Current (RL ∞) (- note 1)

Low StateVCC = +5V VCC = +15V High StateVCC = 5V

Timing Error (monostable)

(RA = 2k to 100kΩ, C = 0.1µF) Initial Accuracy - (note 2)

Drift with Temperature Drift with Supply Voltage

Timing Error (astable)

(RA, RB = 1kΩ to 100kΩ, C = 0.1µF,

VCC = +15V) Initial Accuracy - (note 2)

Drift with Temperature Drift with Supply Voltage

VCLControl Voltage level VCC = +15V VCC = +5V

Vth Threshold Voltage VCC = +15V VCC = +5V

Vtrig Trigger Voltage VCC = +15V VCC = +5V

IresetReset Current

Vreset = +0.4V Vreset = 0V

VOLLow Level Output Voltage

VCC = +15V,IO(sink) = 10mA

IO(sink) = 50mA IO(sink) = 100mA IO(sink) = 200mA

VCC = +5V,IO(sink) = 8mA IO(sink) = 5mA

VOHHigh Level Output Voltage

VCC = +15V,IO(source) = 200mA

IO(source) = 100mA

(Parte 1 de 3)

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