TLC555CDBLE datasheet(9/19 Pages) TI

9 / 19 page

TLC555

LinCMOS TIMER

SLFS043F − SEPTEMBER 1983 − REVISED FEBRUARY 2005

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

TYPICAL CHARACTERISTICS

Figure 1

−75 − 50

− 25

125

DISCHARGE SWITCH ON-STATE RESISTANCE

FREE-AIR TEMPERATURE

100

TA − Free-Air Temperature − °C

VDD = 2 V, IO = 1 mA

VDD = 5 V, IO = 10 mA

VDD = 15 V, IO = 100 mA

Figure 2

100

PROPAGATION DELAY TIMES TO DISCHARGE

OUTPUT FROM TRIGGER AND THRESHOLD

SHORTED TOGETHER

SUPPLY VOLTAGE

400

200

500

600

300

VDD − Supply Voltage − V

tPLH†

IO(on) ≥ 1 mA

CL ≈ 0

TA = 25°C

† The effects of the load resistance on these values must be

taken into account separately.

tPHL

APPLICATION INFORMATION

0.1

µF

0.1

µF

Output

GND

TRIG

THRES

RESET

DISCH

CONT

VDD

OUT

VDD

2/3 VDD

1/3 VDD

GND

tPHL

tPLH

tc(H)

tc(L)

CIRCUIT

TRIGGER AND THRESHOLD VOLTAGE WAVEFORM

TLC555

Pin numbers shown are for all packages except the

FK package.

Figure 3. Astable Operation

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