MAX1232CSA+T Maxim Integrated Products, MAX1232CSA+T Datasheet - Page 5

• Manufacturer Part Number: MAX1232CSA+T
• Description: IC MPU MONITOR 8-SOIC
• Manufacturer: Maxim Integrated Products
• Type: Simple Reset/Power-On Resetr

Specifications of MAX1232CSA+T

• Number Of Voltages Monitored: 1
• Output: Open Drain or Open Collector
• Reset: Active High/Active Low
• Reset Timeout: 250 ms Minimum
• Voltage - Threshold: 4.37V, 4.62V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Monitored Voltage: 4.5 V or 4.75 V
• Undervoltage Threshold: 4.5 V or 4.25 V
• Overvoltage Threshold: 4.74 V or 4.49 V
• Manual Reset: Resettable
• Watchdog: Yes
• Battery Backup Switching: No
• Power-up Reset Delay (typ): 1000 ms
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Supply Current (typ): 200 uA
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 70 C
• Chip Enable Signals: No
• Minimum Operating Temperature: 0 C
• Operating Supply Voltage: 5 V
• Output Type: Active High or Active Low or Open Drain
• Power Fail Detection: No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 3. Pushbutton Reset. The debounced PBRST input
ignores input pulses less than 1ms and is guaranteed to rec-
ognize pulses of 20ms or greater.
Figure 5. Power-Down Slew Rate
PB RST
RST
RST
V
CC
V
IL
t
PBD
+4.75V
_______________________________________________________________________________________
+4.25V
t
PB
t
F
V
IH
t
RST
Microprocessor Monitor
Figure 6. Power-Up Slew Rate
Figure 4. Watchdog Strobe Input
ST
V
NOTE: t
CC
TRANSITIONS (ST IS ACTIVATED BY FALLING EDGES ONLY) WHICH WILL
KEEP THE WATCHDOG TIMER FROM FORCING THE RESET OUTPUTS
ACTIVE FOR A TIME OF t
THE TD PIN, AS TABULATED BELOW.
CONDITION
TD pin = 0V
TD pin = open
TD pin = V
SD
t
ST
IS THE MAXIMUM ELAPSED TIME BETWEEN ST HIGH-TO-LOW
CC
MIN
62.5ms
250ms
500ms
RST
. t
t
TD
TD
IS A FUNCTION OF THE VOLTAGE AT
t
R
+4.25V
TYP
150ms
250ms
1200ms
t
TD
+4.75V
MAX
250ms
1000ms
2000ms
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