TLC555

LinCMOS TIMER

SLFS043F − SEPTEMBER 1983 − REVISED FEBRUARY 2005

8

POST OFFICE BOX 655303

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Initial error of timing interval‡

VDD = 5 V to 15 V,

RA = RB = 1 kΩ to 100 kΩ,

1%

3%

Supply voltage sensitivity of timing interval

VDD = 5 V to 15 V,

CT = 0.1 µF,

RA = RB = 1 kΩ to 100 kΩ,

See Note 3

0.1

0.5

%/ V

tr

Output pulse rise time

RL = 10 MΩ

CL = 10 pF

20

75

ns

tf

Output pulse fall time

RL = 10 MΩ,

CL = 10 pF

15

60

ns

fmax

Maximum frequency in astable mode

RA = 470 Ω,

CT = 200 pF,

RB = 200 Ω,

See Note 3

1.2

2.1

MHz

‡ Timing interval error is defined as the difference between the measured value and the average value of a random sample from each process

run.

NOTE 3: RA, RB, and CT are as defined in Figure 1.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VIT

Threshold voltage

2.8

3.3

3.8

V

IIT

Threshold current

10

pA

VI(TRIG)

Trigger voltage

1.36

1.66

1.96

V

II(TRIG)

Trigger current

10

pA

VI(RESET)

Reset voltage

0.4

1.1

1.5

V

II(RESET)

Reset current

10

pA

Control voltage (open circuit) as a percentage of supply voltage

66.7%

Discharge switch on-state voltage

IOL = 10 mA

0.14

0.5

V

Discharge switch off-state current

0.1

nA

VOH

High-level output voltage

IOH = − 1 mA

4.1

4.8

V

IOL = 8 mA

0.21

0.4

VOL

Low-level output voltage

IOL = 5 mA

0.13

0.3

V

VOL

Low-level output voltage

IOL = 3.2 mA

0.08

0.3

V

IDD

Supply current

See Note 2

170

350

µA

NOTE 2: These values apply for the expected operating configurations in which THRES is connected directly to DISCH or TRIG.