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ADM825LYRJ-R7

P1-P3P4-P6P7-P9P10-P12
ADM823/ADM824/ADM825 Data Sheet
Rev. D | Page 4 of 12
Parameter Min Typ Max Unit Test Conditions/Comments
WATCHDOG INPUT (ADM823, ADM824)
Watchdog Timeout Period 1.12 1.6 2.40 sec
WDI Pulse Width 50 ns V
IL
= 0.4 V, V
IH
= 0.8 × V
CC
WDI Input Threshold, V
IL
0.7 × V
CC
0.3 × V
CC
V
WDI Input Current
120
160
V
WDI
= V
CC
, time average
−20 −15 µA V
WDI
= 0 V, time average
MANUAL RESET INPUT (ADM823, ADM825)
MR
Input Threshold 0.7 × V
CC
0.3 × V
CC
V
MR
Input Pulse Width 1 µs
MR
Glitch Rejection 100 ns
MR
Pull-Up Resistance 35 52 75 kΩ
MR
to Reset Delay 500 ns
Data Sheet ADM823/ADM824/ADM825
Rev. D | Page 5 of 12
ABSOLUTE MAXIMUM RATINGS
T
A
= 25°C, unless otherwise noted.
Table 3.
Parameter Rating
V
CC
−0.3 V to +6 V
Output Current (RESET,
RESET
) 20 mA
All Other Pins −0.3 V to (V
CC
+ 0.3 V)
Operating Temperature Range −40°C to +125°C
Storage Temperature Range −65°C to +150°C
θ
JA
Thermal Impedance
SC70 146°C/W
SOT-23
270°C/W
Lead Temperature
Soldering (10 sec) 300°C
Vapor Phase (60 sec) 215°C
Infrared (15 sec) 220°C
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only and functional operation of the device at these or
any other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
ESD CAUTION
ADM823/ADM824/ADM825 Data Sheet
Rev. D | Page 6 of 12
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
ADM823
T
O
P
VIEW
(Not to Scale)
RESET
1
GND
2
MR
3
V
CC
WDI
5
4
04534-002
RESET
1
GND
2
RESET
3
V
CC
WDI
5
4
04534-003
ADM824
TOP VIEW
(Not to Scale)
ADM825
TOP VIEW
(Not to Scale)
RESET
1
GND
2
RESET
3
V
CC
MR
5
4
04534-004
Figure 2. ADM823 Pin Configuration Figure 3. ADM824 Pin Configuration Figure 4. ADM825 Pin Configuration
Table 4. Pin Function Descriptions
Pin No.
Mnemonic
Description
1
RESET
Active Low, Push-Pull Reset Output. Asserted whenever V
CC
is below the reset threshold, V
TH
.
2
GND
Ground.
3
MR
(ADM823) Manual Reset Input. This is an active low input which, when forced low for at least 1 µs, generates
a reset. It features a 52 kΩ internal pull-up.
RESET (ADM824/ADM825) Active High, Push-Pull Reset Output.
4 WDI (ADM823/ADM824) Watchdog Input. Generates a reset if the voltage on the pin remains low or high for the duration
of the watchdog timeout. The timer is cleared if a logic transition occurs on this pin or if a reset is
generated.
MR
(ADM825) Manual Reset Input. This is an active low input which, when forced low for at least 1 µs, generates
a reset. It features a 52 kΩ internal pull-up.
5 V
CC
Power Supply Voltage Being Monitored.
P1-P3P4-P6P7-P9P10-P12

ADM825LYRJ-R7

Mfr. #:
Buy ADM825LYRJ-R7
Manufacturer:
Analog Devices Inc.
Description:
Supervisory Circuits Watchdog Supervisor with MR - IC.
Lifecycle:
New from this manufacturer.
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