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AAT3532 Datasheet(PDF) 4 Page - Advanced Analog Technology, Inc.

Part No. AAT3532
Description  MicroPower™ Microprocessor Reset Circuit
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Maker  AAT [Advanced Analog Technology, Inc.]
Homepage  http://www.aatech.com.tw
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AAT3532 Datasheet(HTML) 4 Page - Advanced Analog Technology, Inc.

   
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AAT3532
MicroPower™ Microprocessor Reset Circuit
4
3532.2005.12.1.2
DC Electrical Characteristics
V
IN = 4.5V to 5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C.
AC Electrical Characteristics
V
IN = 4.5V to 5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C.
Symbol
Description
Conditions
Min
Typ
Max
Units
C
IN
Input Capacitance ST, TOL
3
T
A = 25ºC
5
pF
C
OUT
Output Capacitance RST, RST
3
T
A = 25ºC
7
pF
t
PB
PBRST
4
See Figure 2
20
ms
t
PBD
PBRST Delay
See Figure 2
1
4
20
ms
t
RST
Reset Active Time
250
610
1000
ms
t
ST
ST Pulse Width
See Figure 3
20
ns
TD Pin = 0V
62.5
150
250
t
TD
ST Time-out Period
TD Pin = Open
250
600
1000
ms
TD Pin = V
CC
500
1200
2000
t
f
V
CC Fall Time
3
4.75V to 4.25V
10
µs
t
r
V
CC Rise Time
3
4.25V to 4.75V
0
5
µs
t
RPD
V
CC Detect to RST High and RST Low
V
CC Falling
50
µs
t
RPU
V
CC Detect to RST Low and RST Open
V
CC Rising
250
610
1000
ms
Symbol
Description
Conditions
Min
Typ
Max
Units
V
CC
Supply Voltage
4.5
5.0
5.5
V
CMOS Levels
23
50
I
Q
Quiescent Current
1
V
CC = 5.5V
TTL Levels
160
500
µA
V
CCTP
Reset Threshold 5%
TOL = GND
4.50
4.62
4.74
V
Reset Threshold 10%
TOL = V
CC
4.25
4.37
4.49
I
IL
Input Leakage ST, TOL
-1.0
1.0
µA
I
OH
Output Current RST
2
V
OH = 2.4V
-8.0
mA
I
OL
Current RST
2, RST
V
OL = 0.4V
10.0
mA
V
IH
ST and PBRST Input High
2.0
V
CC + 0.3
V
V
IL
ST and PBRST Input Low
-0.3
0.8
V
I
RST
RST Output Leakage
V
OH = VCC
1.0
µA
1. Measured with outputs open and ST toggling at 100kHz, 50% duty cycle.
2. RST is an open drain output.
3. Guaranteed by design and not subject to production testing.
4. PBRST must remain low for greater than 20ms to guarantee a reset.


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