CAT809SSDI-T3 ON Semiconductor, CAT809SSDI-T3 Datasheet - Page 7

• Manufacturer Part Number: CAT809SSDI-T3
• Description: IC SUPERVISOR MPU PP 2.93V SC70-
• Manufacturer: ON Semiconductor
• Type: Simple Reset/Power-On Resetr

Specifications of CAT809SSDI-T3

• Number Of Voltages Monitored: 1
• Output: Push-Pull, Totem Pole
• Reset: Active Low
• Reset Timeout: 140 ms Minimum
• Voltage - Threshold: 2.93V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SC-70-3, SOT-323-3
• Monitored Voltage: 2.5 V, 3 V, 3.3 V, 5 V
• Output Type: Active Low, Push-Pull
• Manual Reset: Not Resettable
• Watchdog: No Watchdog
• Battery Backup Switching: No Backup
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1.2 V
• Supply Current (typ): 15 uA
• Maximum Power Dissipation: 175 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Power Fail Detection: No
• Undervoltage Threshold: 2.89 V
• Overvoltage Threshold: 2.96 V
• Power-up Reset Delay (typ): 240 ms (Typ)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: CAT809SSDI-T3CT

V
The CAT809/810 protect µPs against brownout failure.
Short duration transients of 4µsec or less and 100 mV
amplitude typically do not cause a false RESET.
Figure 2 shows the maximum pulse duration of negative-
going V
DETAILED DESCRIPTIONS
RESET TIMING
The reset signal is asserted LOW for the CAT809 and
HIGH for the CAT810 when the power supply voltage
falls below the threshold trip voltage and remains asserted
for at least 140ms after the power supply voltage has
risen above the threshold.
© 2005 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CC
Figure 2. Maximum Transient Duration Without Causing a Reset Pulse vs. Reset Comparator Overdrive
TRANSIENT RESPONSE
CC
Voltage
RESET
RESET
Supply
Power
transients that do not cause a reset condition.
5V
0V
5V
0V
5V
0V
30
25
20
15
10
5
0
Figure 1. Reset Timing Diagram
1
RESET OVERDRIVE V TH - V CC [mV]
CAT809M
10
7
T AMB = 25°C
100
As the amplitude of the transient goes further below the
threshold (increasing V
duration decreases. In this test, the V
initial voltage of 0.5V above the threshold and drops
below it by the amplitude of the overdrive voltage (V
V
CAT809Z
CC
Threshold
).
Voltage
1000
minimum
140ms
Reset Timeout Period
TH
- V
CC
), the maximum pulse
CAT803/CAT809
CAT810
CAT809, CAT810
CC
starts from an
Doc No. 3004, Rev. Q
TH
-