MAX6301CSA+ Maxim Integrated Products, MAX6301CSA+ Datasheet - Page 7
![IC SUPERVISORY CIRC 5V LP 8-SOIC](/photos/1/39/13902/8-soic_21-0042b_sml.jpg)
MAX6301CSA+
Manufacturer Part Number
MAX6301CSA+
Description
IC SUPERVISORY CIRC 5V LP 8-SOIC
Manufacturer
Maxim Integrated Products
Type
Simple Reset/Power-On Resetr
Datasheet
1.MAX6301CSA.pdf
(12 pages)
Specifications of MAX6301CSA+
Number Of Voltages Monitored
1
Output
Open Drain or Open Collector
Reset
Active Low
Reset Timeout
2.8 ms Minimum
Voltage - Threshold
Adjustable/Selectable
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Undervoltage Threshold
Adj V
Overvoltage Threshold
Adj V
Manual Reset
Resettable
Watchdog
Yes
Battery Backup Switching
No
Power-up Reset Delay (typ)
5.2 ms
Supply Voltage (max)
5.5 V
Supply Voltage (min)
1 V
Supply Current (typ)
4 uA (Typ)
Maximum Power Dissipation
471 mW
Mounting Style
SMD/SMT
Maximum Operating Temperature
+ 70 C
Chip Enable Signals
No
Minimum Operating Temperature
0 C
Output Type
Active Low or Open Drain
Power Fail Detection
No
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Figure 2a. Watchdog Timing Diagram, WDS = GND
Figure 2b. Watchdog Timing Diagram, WDS = V
watchdog counter. When WDI is left unconnected, the
watchdog timer is cleared by this internal driver just
before the timeout period is reached (the internal driver
pulls WDI high at about 94% of t
three-stated, the maximum allowable leakage current of
the device driving WDI is 10µA.
In normal mode (WDS = GND), the watchdog timer
cannot be disabled by three-stating WDI. WDI is a
high-impedance input in this mode. Do not leave WDI
unconnected in normal mode.
The reset timeout period is adjustable to accommodate
a variety of µP applications. Adjust the reset timeout
period (t
(C
the reset timeout capacitor as follows:
SRT
NORMAL MODE (WDS = GND)
EXTENDED MODE (WDS = V
) between SRT and ground (Figure 3). Calculate
RESET
RESET
WDI
WDI
RP
Selecting the Reset and Watchdog
V
V
V
V
) by connecting a specific value capacitor
0V
0V
CC
0V
CC
0V
CC
CC
Applications Information
_______________________________________________________________________________________
+5V, Low-Power µP Supervisory Circuits
C
CC
SRT
)
= t
RP
/2.67
Timeout Capacitor
WD
with Adjustable Reset/Watchdog
). When WDI is
CC
t
WD
t
WD
x 500
Figure 3. Calculating the Reset (C
Timeout Capacitor Values
C
SRT
C
SRT
C
t
RP
SRT
= t
in µs
2.67
in pF
RP
C
SWT
t
RP
C
C
t
WD
GND
SRT
SWT
SWT
SWT
in µs
= t
in pF
MAX6301
MAX6302
MAX6303
MAX6304
2.67
WD
SRT
) and Watchdog (C
V
CC
V
CC
0.1µF
t
RP
SWT
)
7