Microprocessor Supervisory Reset Circuits

with Edge-Triggered, One-Shot Manual Reset

4

_______________________________________________________________________________________

OUTPUT VOLTAGE HIGH

vs. SOURCE CURRENT

7

6

4

5

2

3

1

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

0

08

MAXIMUM TRANSIENT DURATION

vs. RESET THRESHOLD OVERDRIVE

RESET THRESHOLD OVERDRIVE (mV)

50

40

30

20

10

100

200

300

400

500

600

0

060

RESET ASSERTS

ABOVE THIS LINE

TEMPERATURE (

°C)

110

95

65 80

-10 5

20 35 50

-25

65

70

75

80

85

90

95

100

105

110

115

120

60

-40

125

MR TO RESET DELAY

vs. TEMPERATURE

PROPAGATION DELAY

(WITH 100mV OVERDRIVE)

MAX6467 toc10

4

µs/div

3.0V

3V

0

2.8V

AC-COUPLED

RESET 1V/div

RESET PULLUP AND PULLDOWN RESPONSE

MAX6467 toc11

40

µs/div

1.675V

1.6V

0

1.475V

RESET 500mV/div

Ω,

MAX6467_S16D3-T

RESET TIMEOUT PERIOD

MAX6467 toc12

40ms/div

3.3V

3.3V

0

0

RESET 2V/div

Typical Operating Characteristics (continued)