ICM7555CD datasheet(3/9 Pages) PHILIPS

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Philips Semiconductors Linear Products

Product specification

ICM7555

General purpose CMOS timer

August 31, 1994

339

DC AND AC ELECTRICAL CHARACTERISTICS

TA = 25°C unless otherwise specified.

SYMBOL

PARAMETER

TEST CONDITIONS

LIMITS

UNITS

SYMBOL

PARAMETER

TEST CONDITIONS

ICM7555

UNITS

MIN

TYP

MAX

VDD

Supply voltage

TMIN < TA < TMAX

IDD

Supply current1

VDD = VMIN

VDD = VMAX

180

200

300

µA

Astable mode timing2

Initial accuracy

Drift with supply voltage

Drift with temperature3

RA, RB = 1k to 100k, C = 0.1µF

5V <V

DD <15V

VDD = 5V

VDD = 10V

VDD = 15V

1.0

0.1

100

5.0

3.0

%/V

ppm/oC

VTH

Threshold voltage

VDD = 5V

0.63

0.65

0.67

xVDD

VTRIG

Trigger voltage

VDD = 5V

0.29

0.31

0.34

xVDD

ITRIG

Trigger current

VDD = VTRIG = VMAX

VDD = VTRIG = 5V

VDD = VTRIG = VMIN

ITH

Threshold current

VDD = VTH = VMAX

VDD = VTH = 5V

VDD = VTH = VMIN

IRST

Reset current

VDD = VRST = VMAX

VDD = VRST =

VDD = VRST = VMIN

100

VRST

Reset voltage

VDD = VMIN and VMAX

0.4

0.7

1.0

VCV

Control voltage

VDD = 5V

0.62

0.65

0.67

xVDD

VOL

Output voltage (low)

VDD = VMAX, ISINK = 3.2mA

VDD = 5V,

ISINK = 3.2mA

0.1

0.2

0.4

VOH

Output voltage (high)

VDD = VMAX, ISOURCE = -1.0mA

VDD = 5V,

ISOURCE = -1.0mA

15.25

4.0

15.7

4.5

VDD

VDIS

Discharge output voltage

VDD = 5V, IDIS = 10.0mA

0.2

0.4

Rise time of output3

RL = 10MΩ, CL = 10pF, VDD =

Fall time of output3

RL = 10MΩ, CL = 10pF, VDD =

FMAX

Maximum oscillator frequency

(astable mode)

500

kHz

NOTES:

1. The supply current value is essentially independent of the TRIGGER, THRESHOLD, and RESET voltages.

2. Astable timing is calculated using the following equation: f =

1.38

(RA + 2RB)C

. The components are defined in Figure 2.

3. Parameter is not 100% tested.

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