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NE555

PRECISION TIMERS

Diodes Incorporated. 

NE555/SA555/NA555

PRECISION TIMERS

Electrical Characteristics (VCC = 5V to 15V, TA = 25°C unless otherwise stated)

Symbol

VOL

VOH

ICC

TER

TTC

TVCC

TRI

TFA

Parameter

Test conditions

VCC = 15V, IOL = 10mA

VCC = 15V, IOL = 50mA

Low level output voltage

VCC = 15V, IOL = 100mA

VCC = 15V, IOL = 200mA

VCC = 5V, IOL = 5mA

VCC = 5V, IOL = 8mA

VCC = 15V, IOH = -100mA

High level output voltage

VCC = 15V, IOH = -200mA

VCC = 5V, IOH = -100mA

Supply current

Output low, no load

Output high, no load

VCC = 15V

VCC = 5V

VCC = 15V

VCC = 5V

Initial error of timing interval

Each time, monostable

(Note 9)

(Note 8)

Each time, astable

(Note 10)

Each time, monostable

Temperature coefficient of timing (Note 9)

interval

Each time, astable

TA = full

range

(Note 10)

Supply voltage sensitivity of

timing interval

Each time, monostable

(Note 9)

Each time, astable

(Note 10)

Output pulse rise time

CL = 15pF

Output pulse fall time

CL = 15pF

Min

12.75

2.75

Typ.

0.1

0.4

2

2.5

0.1

0.15

13.3

12.5

3.3

10

3

9

2

1

2.25

50

150

0.1

0.3

100

100

Max Unit

0.25

0.75

2.5

V

0.35

0.4

V

15

6

mA

13

5

3

%

ppm/°C

0.5

%/V

300 ns

300 ns

Notes:

6. This parameter influences the maximum value of the timing resistors RA and RB in the circuit of Figure 12. For example, when VCC = 5 V, the

maximum value is R = RA + RB ≉ 3.4MΩ, and for VCC = 15 V, the maximum value is 10MΩ.

7. No protection against excessive pin 7 current is necessary providing package dissipation rating is not exceeded

8. Timing interval error is defined as the difference between the measured value and the average value of a random sample from each process run.

9. Values specified are for a device in a monostable circuit similar to Figure 9, with the following component values: RA = 2kΩ to 100kΩ, C = 0.1uF.

10. Values specified are for a device in an astable circuit similar to Figure 12, with the following component values: RA = 1kΩ to 100kΩ, C = 0.1uF.

NE555/SA555/NA555

Document number: DS35112 Rev. 4 - 2

4 of 14

www.diodes.com

February 2012

© Diodes Incorporated

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