3

LTC1232

sn1232 1232fas

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Voltage

●

4.5

5

5.5

V

ST and PB RST Input High Level

●

V

ST and PB RST Input Low Level

●

– 0.3

0.8

V

DC ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input Leakage

(Note 3)

●

–1

1

µA

Output Current at 2.4V

(Note 5)

●

–1

–13

mA

Output Current at 0.4V

(Note 5)

●

26

mA

Supply Current

(Note 4)

●

0.5

2

mA

TOL = GND

●

4.5

4.62

4.74

V

●

4.25

4.37

4.49

V

40

mV

4

200

mV

The

The

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

●

40

ms

RESET Active Time

●

250

610

1000

ms

ST Pulse Width

●

20

ns

●

100

ns

●

300

µs

●

250

610

1000

ms

(Reset Active Time)

●

0ns

ST Pin Detect to RST and RST

TD = GND

●

60

150

250

ms

(Watchdog Time-Out Period)

TD = Floating

●

250

610

1000

ms

●

500

1200

2000

ms

Input Capacitance

5pF

Output Capacitance

5

pF

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: All voltage values are with respect to GND.

impedance of 10k typical. The TD pin has internal bias current.

Note 4: Measured with outputs open.

Note 5: The RST pin is an open drain output.

The

AC CHARACTERISTICS

RECO

E DED OPERATI G CO DITIO S