NE556, SA556, SE556

DUAL PRECISION TIMERS

SLFS023C – APRIL 1978 – REVISED DECEMBER 1999

3

POST OFFICE BOX 655303

recommended operating conditions

MIN

MAX

UNIT

Supply voltage VCC

NE556, SA556

4.5

16

V

Supply voltage, VCC

SE556

4.5

18

V

Input voltage (CONT, RESET, THRES, and TRIG), VI

VCC

V

Output current, IO

±200

mA

NE556

0

70

Operating free-air temperature, TA

SA556

–40

85

°C

SE556

–55

125

PARAMETER

TEST CONDITIONS

NE556, SA556

SE556

UNIT

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

UNIT

VT

Threshold voltage level

VCC = 15 V

8.8

10

11.2

9.4

10

10.6

V

VT

Threshold voltage level

VCC = 5 V

2.4

3.3

4.2

2.7

3.3

4

V

IT

Threshold current (see Note 3)

30

250

30

250

nA

VTRIG

Trigger voltage level

VCC = 15 V

4.5

5

5.6

4.8

5

5.2

V

VTRIG

Trigger voltage level

VCC = 5 V

1.1

1.67

2.2

1.45

1.67

1.9

V

ITRIG

Trigger current

TRIG at 0 V

0.5

2

0.5

0.9

µA

VRESET Reset voltage level

0.3

0.7

1

0.3

0.7

1

V

IRESET

Reset current

RESET at VCC

0.1

0.4

0.1

0.4

mA

IRESET

Reset current

RESET at 0 V

–0.4

1.5

–0.4

–1

mA

IDISCH

Discharge switch off-state

current

20

100

20

100

nA

VCONT

Control voltage (open circuit)

VCC = 15 V

9

10

11

9.6

10

10.4

V

VCONT

Control voltage (open circuit)

VCC = 5 V

2.6

3.3

4

2.9

3.3

3.8

V

IOL = 10 mA

0.1

0.25

0.1

0.15

VCC =15V

IOL = 50 mA

0.4

0.75

0.4

0.5

VOL

Low level output voltage

VCC = 15 V

IOL = 100 mA

2

2.5

2

2.2

V

VOL

Low-level output voltage

IOL = 200 mA

2.5

2.5

V

VCC =5V

IOL = 5 mA

0.1

0.25

0.1

0.15

VCC = 5 V

IOL = 8 mA

0.15

0.3

0.15

0.25

VCC =15V

IOH = – 100 mA

12.75

13.3

13

13.3

VOH

High-level output voltage

VCC = 15 V

IOH = – 200 mA

12.5

12.5

V

VCC = 5 V

IOH = – 100 mA

2.75

3.3

3

3.3

Output low,

VCC = 15 V

20

30

20

24

mA

ICC

Supply current

,

No Load

VCC = 5 V

6

12

6

10

mA

ICC

Supply current

Output high,

VCC = 15 V

18

26

18

20

nA

g

No load

VCC = 5 V

4

10

4

8

nA

NOTE 3: This parameter influences the maximum value of the timing resistors RA and RB in the circuit of Figure 1. 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.