September 29, 2000

3

MIC2774

MIC2774

Micrel

Supply Voltage (V

Input Voltages (V

Output Voltages (V

RST, (/RST) Current .................................................. 20mA

Storage Temperature (T

ESD Rating, Note 3 ................................................... 1.5kV

Supply Voltage (V

Input Voltages (V

Output Voltages

V

V

Ambient Temperature Range (T

Package Thermal Resistance (

θ

Electrical Characteristics

Note 5; T

Symbol

Parameter

Condition

Min

Typ

Max

Units

I

DD

Supply Current

V

3.5

µA

Note 5; /MR, RST, /RST open

VDD VOLTAGE THRESHOLD

Under-Voltage Threshold On V

DD

V

V

TH

V

V

(See Standard Voltage Options Table)

V

HYST

Hysteresis Voltage

1%

IN, UNDER-VOLTAGE DETECTOR INPUT

V

REF

Under-Voltage Threshold

Note 5

295

300

305

mV

V

HYST

Hysteresis Voltage

3mV

I

IN

Input Current

5pA

T

10

nA

RST, /RST OUTPUTS

t

PROP

Propagation Delay

V

20

µs

V

t

RST

Reset Pulse Width

T

140

280

ms

V

OL

RST or /RST Output Voltage Low

I

0.3

V

V

I

0.3

V

V

V

OH

RST or /RST Output Voltage High

I

0.8V

DD

V

V

(H and L Version Only)

I

0.8V

DD

V

V

/MR INPUTS

V

IH

Input High Voltage

Note 5

0.7V

DD

V

V

IL

Input Low Voltage

Note 5

0.3V

DD

V

t

PROP

Propagation Delay

V

5

µs

t

MIN

Minimum Input Pulse Width

Reset Occurs, V

33

ns

I

PU

Internal Pull-up Current

100

nA

I

IN

Input Current, /MR

V

100

nA

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

Note 5.

V