UM805 Datasheet, PDF (3/14 Pages) Union Semiconductor, Inc. – Voltage Monitors with Manual Reset Input

UM805/811/812
Pin Description
Pin
Number
1
2
3
Pin Name
GND
______________
RESET
(UM805/811)
RESET
(UM812)
_______
MR
Function
Ground
_____________
Active-Low Reset Output. RESET remains low while V_CC is below
_______
the reset threshold or while M R is held low. It remains low for the
Reset Active Timeout Period (t_RP) after the reset conditions are
terminated. See Figure 1.
UM811:
CMOS push-pull output (sources and sinks current)
UM805:
Open-drain, active low, NMOS output (sinks current only). Connect a
______________
pull-up resistor from RESET to any supply voltage up to 6V.
Active-High Reset Output. RESET remains high while V_CC is below
_______
the reset threshold or while MR is held low. RESET remains high for
Reset Active Timeout Period (t_RP) after the reset conditions are
terminated.
_______
Manual Reset Input. A logic low on M R asserts reset. Reset remains
_______
_______
asserted as long as M R is low and for 240ms after M R returns high.
This active-low input has an internal 20kΩ pull-up resistor. It can be
driven from a TTL or CMOS-logic line, or shorted to ground with a
switch. Leave open if unused. See Figure 2.
4
V_CC
+5V, +3.3V, or +3V Supply Voltage
Absolute Maximum Ratings (Note 1)
Symbol
Parameter
Value
Unit
V_CC Supply Voltage
-0.3 to +6.0
_____________
RESET, RESET (push-pull)
-0.3 to (V_CC+0.3)
V
_____________
RESET (open-drain)
-0.3 to +6.0
_______
I_{CC Input Current, VCC, M R}
_____________
I_{O Output Current, RESET, RESET}
20
mA
20
mA
P_D
Continuous Power Dissipation (Derate 4mW/°C above
70°C)
320
mW
T_A Operating Temperature Range
-40 to +105
°C
T_STG Storage Temperature Range
-65 to +160
°C
Lead Temperature (soldering, 10s)
+300
°C
Note 1: Stresses beyond those listed under “Absolute maximum Ratings” may cause permanent
damage to the device. These are stress ratings only and functional operation of the device at these or
any other conditions beyond those indicated in the operational sections of the specifications are not
implied. Exposure to absolute maximum rating conditions for extended periods may affect device
reliability.
________________________________________________________________________
http://www.union-ic.com Rev.01 Jan.2015
3/14