June 2000

3

MIC2779

MIC2779

Micrel

Supply Voltage (V

Input Voltages (V

/RST, RST Output Current (I

Storage Temperature (T

ESD Rating, Note 3 ...................................................... 2kV

Supply Voltage (V

Input Voltages (V

Ambient Temperature Range (T

Package Thermal Resistance ............................... 256

°C/W

Electrical Characteristics

1.5V

≤ V

Symbol

Parameter

Condition

Min

Typ

Max

Units

I

DD

Supply Current

/RST, RST not asserted

1

2

µA

I

Input Leakage Current

5pA

10

nA

V

REF

Reference Voltage

1.240

V

MIC2779H/L-2

1.215

1.265

V

MIC2779H/L-1

1.228

1.252

V

t

D

Propagation Delay

V

5

µs

V

t

RESET

Reset Pulse Width

140

420

ms

V

OL

Reset Output Low Voltage

/RST asserted or RST not asserted,

I

0.3

V

/RST asserted or RST not asserted,

I

0.4

V

V

OH

Reset Output High Voltage

/RST not asserted or RST asserted,

I

0.8V

DD

V

/RST not asserted or RST asserted,

I

0.8V

DD

V

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 4.

V

Timing Diagram

0V

A

A

Propagation delays not shown for clarity.

Note A.

The MIC2779 ignores very brief transients.

See “Applications Information” for details.