Datasheet
LM809, LM810
SNVS052D –SEPTEMBER 1999–REVISED MAY 2013
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Pin Descriptions
PIN
NAME FUNCTION
SON SOT-23
1 1 GND Ground reference
Active-low output. RESET remains low while V
CC
is below the reset threshold, and for
RESET (LM809)
240ms after V
CC
rises above the reset threshold.
3 2
Active-high output. RESET remains high while V
CC
is below the reset threshold, and for
RESET (LM810)
240ms after V
CC
rises above the reset threshold.
5 3 V
CC
Supply Voltage (+5V, +3.3V, or +3.0V)
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Absolute Maximum Ratings
(1)(2)
V
CC
−0.3V to 6.0V
RESET, RESET −0.3V to (V
CC
+ 0.3V)
Input Current, V
CC
Pin 20mA
Output Current, RESET, RESET Pin 20mA
Rate of Rise, V
CC
100V/µs
ESD Rating
(3)
2kV
Continuous Power Dissipation
(4)
320mW
Thermal Resistance, θ
JA
SON-6 152°C/W
SOT-23-3 326°C/W
Ambient Temperature Range −40°C to +105°C
Maximum Junction Temperature 125°C
Storage Temperature Range −65°C to +160°C
Lead Temperature (soldering, 10sec) +300°C
(1) Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which the
device operates correctly. Operating ratings do not imply ensured performance limits. For specified performance limits and associated
test conditions, see the Electrical Characteristics.
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and
specifications.
(3) The human body model is a 100pF capacitor discharged through a 1.5kΩ resistor into each pin.
(4) At elevated temperatures, devices must be derated based on package thermal resistance. The device in the SOT-23-3 package must be
derated at 4mW/°C at ambient temperatures above 70°C. The device has internal thermal protection.
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