THRES voltage level

TRIG voltage level

RESET current

CONT voltage (open circuit)

Low-level output voltage

Supply current

VCC = 15 V

VCC = 5 V

VCC = 15 V

Output low,

No load

Output high,

No load

V

V

mA

V

V

V

TEST

CONDITIONS†

Initial error of timing interval‡

TA = 25°C

TA = MIN to MAX

TA = 25°C

ppm/

°C

%/V

ns

SLFS022 – D1669, SEPTEMBER 1973—REVISED FEBRUARY 1992

NE555, SA555, SE555, SE555C

PRECISION TIMERS

POST OFFICE BOX 655303

5

PARAMETER

TEST CONDITIONS

SE555

NE555, SA555,

SE555C

UNIT

MIN

TYP

MAX

MIN

TYP

MAX

VCC = 15 V

9.4

10

10.6

8.8

10

11.2

VCC = 5 V

2.7

3.3

4

2.4

3.3

4.2

THRES current (see Note 2)

30

250

30

250

nA

VCC = 15 V

4.8

5

5.2

4.5

5

5.6

VCC = 5 V

1.45

1.67

1.9

1.1

1.67

2.2

TRIG current

TRIG at 0 V

0.5

0.9

0.5

2

µA

RESET voltage level

0.3

0.7

1

0.3

0.7

1

V

RESET at VCC

0.1

0.4

0.1

0.4

RESET at 0 V

– 0.4

–1

– 0.4

– 1.5

DISCH switch off-state current

20

100

20

100

nA

VCC = 15 V

9.6

10

10.4

9

10

11

VCC = 5 V

2.9

3.3

3.8

2.6

3.3

4

IOL = 10 mA

0.1

0.15

0.1

0.25

IOL = 50 mA

0.4

0.5

0.4

0.75

IOL = 100 mA

2

2.2

2

2.5

IOL = 200 mA

2.5

2.5

IOL = 5 mA

0.1

0.2

0.1

0.35

IOL = 8 mA

0.15

0.25

0.15

0.4

IOH = – 100 mA

13

13.3

12.75

13.3

High-level output voltage

IOH = – 200 mA

12.5

12.5

VCC = 5 V

IOH = – 100 mA

3

3.3

2.75

3.3

VCC = 15 V

10

12

10

15

VCC = 5 V

3

5

3

6

mA

VCC = 15 V

9

10

9

13

VCC = 5 V

2

4

2

5

NOTE 2: 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 ≈ 3.4 MΩ, and for VCC = 15 V, the maximum value is 10 MΩ.

PARAMETER

SE555

NE555, SA555,

SE555C

UNIT

MIN

TYP

MAX

MIN

TYP

MAX

Each timer, monostable§

0.5%

1.5%

1%

3%

Each timer, astable¶

1.5%

2.25%

Temperature coefficient

Each timer, monostable§

30

100

50

of timing interval

Each timer, astable¶

90

150

Supply voltage sensitivity

Each timer, monostable§

0.05

0.2

0.1

0.5

of timing interval

Each timer, astable¶

0.15

0.3

Output pulse rise time

CL = 15 pF,

100

200

100

300

Output pulse fall time

TA = 25°C

100

200

100

300

† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.

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

§ Values specified are for a device in a monostable circuit similar to Figure 9, with component values as follow: RA = 2 kΩ to 100 kΩ, C = 0.1 µF.

¶ Values specified are for a device in an astable circuit similar to Figure 12, with component values as follow: RA = 1 kΩ to 100 kΩ, C = 0.1 µF.