Philips Semiconductors Linear Products

Product specification

NE/SA/SE556/NE556-1

Dual timer

August 31, 1994

356

SYMBOL

PARAMETER

TEST CONDITIONS

SE556/556-1

NE/SA556/SE556C

NE556-1/SE556-1C

UNIT

SYMBOL

PARAMETER

TEST CONDITIONS

Min

Typ

Max

Min

Typ

Max

UNIT

0.5

1.0

1.0

2.0

%

Drift with temperature

10

±10

ppm/

°C

Drift with supply voltage

0.1

0.2

0.2

0.5

%/V

NOTES:

1. Supply current when output is high is typically 1.0mA less.

R=3.4M

Ω.

4. Matching characteristics refer to the difference between performance characteristics for each timer section in the monostable mode.

5. Specified with trigger input high. In order to guarantee reset the voltage at reset pin must be less than or equal to 0.4V. To disable reset

function, the voltage at reset pin has to be greater than 1V.

tied to threshold.

TYPICAL APPLICATIONS

One feature of the dual timer is that by utilizing both halves it is

possible to obtain sequential timing. By connecting the output of the

first half to the input of the second half via a 0.001

µF coupling

The first half of the timer is started by momentarily connecting Pin 6

Sequential Timer

All resistor values are in

Ω.

NOTE:

VCC

VCC

VCC

VCC

VCC

INPUT

OUTPUT 1

OUTPUT 2

50

µF

10k

1M

1

2

6

7

11

3

9

5

8

13

12

14

10

4

556

.01

.001

C1

C2

R2

R1

.001

.01

1

µF

10k

130k