5.5 Electrical Characteristics

Test Circuit, T = 25°C, all switches open, RESET to VS unless otherwise noted(1)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

IS

Supply current

VS = 1.5 V

130

200

µA

VS = 5 V

180

250

VS = 12 V

220

400

VCTRL

Control voltage

VS = 1.5 V

0.8

1.0

1.2

V

VS = 5 V

2.9

3.3

3.8

VS = 12 V

7.4

8.0

8.6

VDIS

Discharge saturation voltage

VS = 1.5 V, IDIS = 1 mA

75

150

mV

VS = 5 V, IDIS = 10 mA

150

300

VOL

Output voltage (low)

VS = 1.5 V, IO = 1 mA

0.2

0.4

V

VS = 5 V, IO = 8 mA

0.3

0.6

VS = 12 V, IO = 50 mA

1.0

2.0

VOH

Output voltage

(high)

VS = 1.5 V, IO = −0.25 mA

1.0

1.25

V

VS = 5 V, IO = −2 mA

4.4

4.7

VS = 12 V, IO = −10 mA

10.5

11.3

VTRIG

Trigger voltage

VS = 1.5 V

0.4

0.5

0.6

V

VS = 12 V

3.7

4.0

4.3

ITRIG

Trigger current

VS = 5 V

10

pA

VRES

Reset voltage

VS = 1.5 V (2)

0.4

0.7

1.0

V

VS = 12 V

0.4

0.75

1.1

IRES

Reset current

VS = 5 V, VRES = VS

10

pA

VS = 5 V, VRES = 0 V

5.9

µA

ITHRESH

Threshold current

VS = 5 V

10

pA

IDIS

Discharge leakage

VS = 12 V

1.0

100

nA

(1)

All voltages are measured with respect to the ground pin, unless otherwise specified.

(2)

If the RESET pin is to be used at temperatures of −20°C and less, then ensure that VS is 2.0 V or greater.

5.6 Switching Characteristics

Test Circuit, T = 25°C, all switches open, RESET to VS unless otherwise noted.(1) Characteristic values are specified by

design, characterization, or both.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

t

Timing accuracy

SW 2, 4 closed

VS = 1.5 V

0.9

1.1

1.25

ms

VS = 5 V

1.0

1.1

1.20

VS = 12 V

1.0

1.1

1.25

Δt/ΔVS

Timing shift with supply

VS = 5 V ± 1 V

0.3

%/V

Δt/ΔT

Timing shift with

temperature

VS = 5 V

75

ppm/°C

fA

Astable frequency

SW 1, 3 closed, VS = 12 V

4.0

4.8

5.6

kHz

fMAX

Maximum frequency

Maximum frequency test circuit, VS = 5 V

3.0

MHz

tR, tF

Output rise and

fall times

Maximum frequency test circuit

VS = 5 V, CL = 10 pF

15

ns

tPD

Trigger propagation

delay

VS = 5 V, measure delay

from trigger to output

100

ns

(1)

All voltages are measured with respect to the ground pin, unless otherwise specified.

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LMC555

SNAS558N – JANUARY 2000 – REVISED MARCH 2024

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