Datasheet
MAX6316–MAX6322
5-Pin µP Supervisory Circuits with
Watchdog and Manual Reset
2
Maxim Integrated
ELECTRICAL CHARACTERISTICS
(V
CC
= 2.5V to 5.5V, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
ABSOLUTE MAXIMUM RATINGS
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.
Voltage (with respect to GND)
V
CC
......................................................................-0.3V to +6V
RESET (MAX6320/MAX6321/MAX6322 only)...... -0.3V to +6V
All Other Pins.........................................-0.3V to (V
CC
+ 0.3V)
Input/Output Current, All Pins .............................................20mA
Continuous Power Dissipation (T
A
= +70°C)
SOT23 (derate 7.1mW/°C above +70°C)...............571mW
Operating Temperature Range..........................-40°C to +125°C
Junction Temperature ......................................................+150°C
Storage Temperature Range..............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow)
Leaded Package .........................................................+240°C
Lead-Free Package.....................................................+260°C
Note 1: Overtemperature limits are guaranteed by design, not production tested.
Note 2: A factory-trimmed voltage divider programs the nominal reset threshold (V
TH
). Factory-trimmed reset thresholds are
available in 100mV increments from 2.5V to 5V (see Table 1 at end of data sheet).
Note 3: Guaranteed by design.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Operating Voltage Range V
CC
T
A
= -40°C to +125°C 1.0 5.5 V
V
CC
= 5.5V 10 20
MAX6316/MAX6317/MAX
6318/MAX6320/MAX6321
V
CC
= 3.6V 5 12
V
CC
= 5.5V 3 12
Supply Current I
CC
MAX6319/MAX6322:
MR unconnected
V
CC
= 3.6V 3 8
µA
Reset Threshold
Temperature Coefficient
∆V
TH
/°C 40 ppm/°C
T
A
= +25°C V
TH
- 1.5% V
TH
V
TH
+ 1.5%
Reset Threshold (Note 2) V
RST
T
A
= -40°C to +125°C V
TH
- 2.5% V
TH
V
TH
+ 2.5%
V
Reset Threshold Hysteresis 3mV
MAX63_ _ A_-T 1 1.4 2
MAX63_ _ B_-T 20 28 40
MAX63_ _ C_-T 140 200 280
Reset Active Timeout Period t
RP
MAX63_ _ D_-T 1120 1600 2240
ms
V
CC
to RESET Delay t
RD
V
CC
falling at 1mV/µs 40 µs
PUSH/PULL RESET OUTPUT (MAX6316L/MAX6317H/MAX6318_H/MAX6319_H/MAX6321HP/MAX6322HP)
V
CC
≥ 1.0V, I
SINK
= 50µA 0.3
V
CC
≥ 1.2V, I
SINK
= 100µA 0.3
V
CC
≥ 2.7V, I
SINK
= 1.2mA 0.3
V
OL
V
CC
≥ 4.5V, I
SINK
= 3.2mA 0.4
V
CC
≥ 2.7V, I
SOURCE
= 500µA 0.8 x V
CC
RESET Output Voltage
V
OH
V
CC
≥ 4.5V, I
SOURCE
= 800µA V
CC
- 1.5
V
RES ET Ri se Ti m e ( M AX 6316L,
M AX 6318LH , M AX 6319LH )
t
R
Rise time is measured from 10% to 90%
of V
CC
; C
L
= 5pF, V
CC
= 3.3V (Note 3)
525 ns
V
CC
≥ 2.7V, I
SINK
= 1.2mA 0.3
V
OL
V
CC
≥ 4.5V, I
SINK
= 3.2mA 0.4
V
CC
≥ 1.8V, I
SOURCE
= 150µA 0.8 x V
CC
V
CC
≥ 2.7V, I
SOURCE
= 500µA 0.8 x V
CC
RESET Output Voltage
V
OH
V
CC
≥ 4.5V, I
SOURCE
= 800µA V
CC
- 1.5
V