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2012 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FT7522 Rev. 1.0.0
4
FT7522
—
Reset
Timer
with
Fixed
Delay
and
Reset
Pulse
DC Electrical Characteristics
The values reported are valid for any of the following ranges:
TA=-40°C to +85°C at VCC=1.8V to 5.0V,
TA=-25°C to +85°C at VCC=1.7V to 5.0V,
TA=0°C to +85°C at VCC=1.65V to 5.0V.
Symbol
Parameter
Condition
Min.
Max.
Unit
VIH
Input High Voltage
DSR, /SR0
0.65 x VCC
V
VIL
Input Low Voltage
DSR, /SR0
0.25 x VCC
V
VOL
Low Level Output Voltage
RST, IOL=500A
0.3
V
IIN
Input Leakage Current (/SR0, DSR)
0V
V
IN 5.0V
1.0
A
ICC
Quiescent Supply Current (Timer Inactive) /SR0=VCC
1
A
Dynamic Supply Current (Timer Active)
/SR0=0V
100
A
AC Electrical Characteristics
The values reported are valid for any of the following ranges:
TA=-40°C to +85°C at VCC=1.8V to 5.0V,
TA=-25°C to +85°C at VCC=1.7V to 5.0V,
TA=0°C to +85°C at VCC=1.65V to 5.0V.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
tPHL1
Timer Delay, /SR0 to RST (DSR=0)
CL=5pF, RL=5K, See Figure 6
6.0
7.5
9.0
s
tREC
Reset Timeout Delay
320
400
480
ms
Capacitance Specifications
TA=+25C.
Symbol
Parameter
Condition
Typical
Unit
CIN
Input Capacitance
VCC=GND
4.0
pF
COUT
Output Capacitance
VCC=5.0V
5.0
pF
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