CAT809MTBI-T3 ON Semiconductor, CAT809MTBI-T3 Datasheet - Page 7

• Manufacturer Part Number: CAT809MTBI-T3
• Description: Supervisory Circuits 4.38V Push-Pull Low
• Manufacturer: ON Semiconductor
• Type: Power Supply Monitorr

Specifications of CAT809MTBI-T3

• Chip Enable Signals: No
• Minimum Operating Temperature: - 40 C
• Output Type: Active Low or Push-Pull
• Power Fail Detection: No
• Number Of Voltages Monitored: 1
• Monitored Voltage: 2.5 V or 3 V or 3.3 V or 5 V
• Undervoltage Threshold: 4.31 V
• Overvoltage Threshold: 4.45 V
• Manual Reset: No
• Watchdog: No
• Battery Backup Switching: No
• Power-up Reset Delay (typ): 460 ms
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1.2 V
• Supply Current (typ): 20 uA
• Maximum Power Dissipation: 320 mW
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 85 C
• Package / Case: SOT-23-3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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
-