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| SE809 Datasheet, PDF (3/5 Pages) Seaward Electronics Inc. – 3-Pin Microprocessor Reset Monitor | |||
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3-Pin Microprocessor Reset Monitor
(Preliminary)
SE809
Electrical Characteristics
Vcc=5V for L/M/J ;3.3V for T/S ;3.0V for R ,TA = 25°C, unless otherwise specified.
Symbol
Parameter
Condition
Min
VCC
Input Voltage
2.0
ICC
Supply Current
--
SE809L-4.63V
4.54
SE809M-4.38V
4.29
SE809J-4.00V
3.92
VTH
Reset Threshold
SE809T-3.08V
3.02
SE809S-2.93V
2.87
SE809R-2.63V
2.58
SE809R-2.30V
2.18
Reset Threshold Temperature
--
Coefficient(4)
VCC to Reset Delay VCC = VTH to (VTH â
--
100mV)
Reset Active Timeout Period
--
VOL
RESET Output Voltage Low
ISINK = 3mA
--
VOH
RESET Output Voltage High
ISOURCE = 800μA 0.8VCC
Typ
7
4.63
4.38
4.00
3.08
2.93
2.63
2.25
30
20
200
--
--
Max Unit
5.5
V
10
μA
4.72
4.47
4.08
3.14
V
2.99
2.68
2.33
-- ppm/°C
--
μsec
msec
0.4
V
--
V
PIN DESCRIPTION:
Pin No. Symbol
1
GND
2
RESET
3
Vcc
Description
Ground
RESET output remains low while Vcc is below the reset voltage
threshold and for 200msec(typ) after Vcc rises above reset threshold
Supply Voltage (typ.)
Note 1: Exceeding the absolute maximum rating may damage the device.
Note 2: The device is not guaranteed to function outside its operating rating.
Note 3: The maximum allowable power dissipation at any TA (ambient temperature) is calculated using: PD(MAX) =
(TJ(MAX) â TA)/ÎJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature,
and the regulator will go into thermal shutdown. See âThermal Considerationâ section for details
Note 4: RESET threshold temperature coefficient is the worst case voltage change divided by the total temperature
range.
Revision 1/7/2008
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2007. ⢠www.seawardinc.com
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