V

68HC11/Bidirectional-Compatible

µP Reset Circuit

2

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

Factory-trimmed reset thresholds are available in 100mV increments from 2.5V to 5V (see Ordering and Marking Information).

Note 2: This is the minimum time RESET must be held low by an external pull-down source to set the active pull-up flip-flop.

∞.

Output Current (RESET)......................................................20mA

SOT143 (derate 4mW/°C above +70°C) .......................320mW

Operating Temperature Range ...........................-40°C to +85°C

Storage Temperature Range .............................-65°C to +160°C

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

MAX6314US_ _D1-T

CONDITIONS

V

0.4

RESET Output Voltage

k

Ω

32

63

100

MR Pullup Resistance

Reset Threshold (Note 1)

µA

512

V

1.0

5.5

Operating Voltage Range

ns

500

MR to Reset Delay

ns

100

MR Glitch Rejection

µs

1

MR Minimum Input Pulse

V

0.8

MR Input Threshold

ppm/°C

60

Reset Threshold Tempco

µs

35

ms

1

1.4

2

Reset Timeout Period

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

MAX6314US_ _D3-T

MAX6314US_ _D2-T

MAX6314US_ _D4-T

410

1120

1570

2240

140

200

280

20

28

40

2.4

0.3

0.3

0.3

V

ns

400

Transition Flip-Flop Setup Time (Note 2)

mA

20

RESET Active Pullup Current

V

0.4

0.9

Active Pullup Enable Threshold

ns

333

k

Ω

4.2

4.7

5.2

RESET Pullup Resistance

333

666

666

RESET Output Rise Time

(Note 3)

MANUAL RESET INPUT

RESET INTERNAL PULLUP