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NE556D_03

GENERAL PURPOSE DUAL BIPOLAR TIMERS

STMicroelectronics 

NE556-SA556-SE556

ELECTRICAL CHARACTERISTICS Tamb = +25°C, VCC = +5V to +15V (unless otherwise specified)

SE556

NE556 - SA556

Symbol

Parameter

Unit

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

ICC

VCL

Vth

Ith

Vtrig

Itrig

Vreset

Ireset

VOL

VOH

Idis(off)

Vdis(sat)

tr

tf

toff

Supply Current (RL ∝) - note 1) (2 timers)

Low Stage

VCC = +5V

VCC = +15V

High State

VCC = +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 - see note 2

Drift with Temperature

Drift with Supply Voltage

Control Voltage Level

VCC = +15V

VCC = +5V

Threshold Voltage

VCC = +15V

VCC = +5V

Threshold Current - note 3)

Trigger Voltage

VCC = +15V

VCC = +5V

Trigger Current (Vtrig = 0V)

Reset Voltage 4)

Reset Current

Vreset = +0.4V

Vreset = 0V

Low 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

High Level Output Voltage

VCC = +15V

IO(sink) = 200mA

IO(sink) = 100mA

VCC = +5V

IO(sink) = 100mA

Discharge Pin Leakage Current

(output high) (Vdis = 10V)

Discharge pin Saturation Voltage

(output low) - note 5)

VCC = +15V, Idis = 15mA

VCC = +5V, Idis = 4.5mA

Output rise Time

Output Fall Time

Turn off Time - note 6) (Vreset = VCC)

9.6

2.9

9.4

2.7

4.8

1.45

0.4

13

3

6

20

4

0.5

30

0.05

1.5

90

0.15

10

3.33

10

3.33

0.1

5

1.67

0.5

0.7

0.1

0.4

0.1

0.4

2

2.5

0.1

0.05

12.5

13.3

3.3

20

180

80

100

100

0.5

10

6

24

20

4

2

1

100

50

0.2

0.1

2.25

150

0.3

10.4 9

10

3.8 2.6 3.33

10.6 8.8 10

4

2.4 3.33

0.25

0.1

5.2 4.5

5

1.9 1.1 1.67

0.9

0.5

1

0.4 0.7

0.4

0.1

1

0.4

0.15

0.1

0.5

0.4

2.2

2

2.5

0.25

0.3

0.2

0.25

12.5

12.75 13.3

2.75 3.3

100

20

480

180

200

80

200

100

200

100

0.5

12

30

mA

3

%

ppm/°C

0.5 %/V

%

ppm/°C

%/V

11

V

4

11.2 V

4.2

0.25 µA

5.6

V

2.2

2.0 µA

1

V

0.4 mA

1.5

0.25

0.75

2.5

V

0.4

0.35

V

100 nA

480 mV

200

300

300

ns

µs

1. Supply current when output is high is typically 1mA less.

2. Tested at VCC = +5V and VCC = +15V

3. This will determine the maximum value of RA + RB for +15V operation the max total is R = 20MΩ and for 5V operation the max total R = 3.5MΩ

4. Specified with trigger input high

5. No protection against excessive pin 7 current is necessary, providing the package dissipation rating will not be exceeded

6. Time measured from a positive going input pulse from 0 to 0.8x Vcc into the threshold to the drop from high to low of the output trigger is tied to threshold.

3/8

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