January 2006

3

MIC1232

MIC2755

Micrel, Inc.

Electrical Characteristics

Parameter

Condition

Min

Typ

Max

Units

Supply Voltage Range

4.5

5.5

V

Supply Current

18

40

µA

/ST and /PBRST Input Levels

2.0

V

–0.3

0.8

V

Input Leakage

±1

µA

Output Souce Current, RST

1.0

10

mA

Output Sink Current, /RST. RST

2.0

10

mA

TOL = GND

4.5

4.62

4.74

V

Threshold Voltage)

4.25

4.37

4.49

V

Threshold Voltage)

Input Capacitance, /ST, TOL

5

pF

Output Capacitance, /RST, RST

7

pF

AC Electrical Characteristics

20

ms

1

4

20

ms

250

610

1000

ms

20

ms

TD = 0V

62.5

150

250

ms

TD = Open

250

600

1000

ms

500

1200

2000

ms

10

µs

0

ns

50

150

µs

250

610

1000

µs

Note 1. Exceeding the absolute maximum rating may damage the device.

Note 2. The device is not guaranteed to function outside its operating rating.

Note 3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.

Note 6. Guaranteed by design

Note 7. /PBRST must be held low for a minimum of 20ms to guarantee a reset

Note 9. /RST has an open drain output

Terminal Voltage

Input Current

VCC ...................................................................... 250mA

GND, all other inputs .............................................. 25mA

Lead Temperature (soldering, 10 sec.)...................... 300°C

Storage Temperature.................................. –65°C to 150°C

ESD Rating,

Note 3

Operating Temperature Range

MIC1232M/N ............................................ –40°C to 85°C