LTC1232(RevA) データシートの表示（PDF） - Linear Technology
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LTC1232 Datasheet PDF : 8 Pages
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LTC1232
RECO E DED OPERATI G CO DITIO S The ● denotes the specifications which apply
over the full operating temperature. VCC = full operating range.
SYMBOL
VCC
VIH
VIL
PARAMETER
Supply Voltage
ST and PB RST Input High Level
ST and PB RST Input Low Level
CONDITIONS
MIN TYP
MAX
●
4.5
5
5.5
●
2
●
– 0.3
VCC+ 0.3
0.8
UNITS
V
V
V
DC ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature. VCC = full operating range.
SYMBOL
IIL
IOH
IOL
ICC
VCCTP
VCCTP
VHYS
VRST
PARAMETER
Input Leakage
Output Current at 2.4V
Output Current at 0.4V
Supply Current
VCC Trip Point
VCC Trip Point
VCC Trip Point Hysteresis
RST Output Voltage at VCC = 1V
CONDITIONS
(Note 3)
(Note 5)
(Note 5)
(Note 4)
TOL = GND
TOL = VCC
ISINK = 10µA
MIN
TYP
MAX
●
–1
1
●
–1
–13
●
2
6
●
0.5
2
●
4.5
4.62
4.74
●
4.25 4.37
4.49
40
4
200
UNITS
µA
mA
mA
mA
V
V
mV
mV
AC CHARACTERISTICS The ● denotes the specifications which apply over the full operating temperature.
VCC = full operating range.
SYMBOL
tPB
tRST
tST
tRPD
tf
tRPU
tR
tTD
CIN
COUT
PARAMETER
PB RST = VIL
RESET Active Time
ST Pulse Width
VCC Detect to RST and RST
VCC Slew Rate 4.75V– 4.25V
VCC Detect to RST and RST
(Reset Active Time)
VCC Slew Rate 4.25V– 4.75V
ST Pin Detect to RST and RST
(Watchdog Time-Out Period)
Input Capacitance
Output Capacitance
CONDITIONS
tR = 5µs
TD = GND
TD = Floating
TD = VCC
MIN TYP
MAX
●
40
●
250
610
1000
●
20
●
100
●
300
●
250
610
1000
●
0
●
60
150
250
●
250
610
1000
●
500 1200 2000
5
5
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: All voltage values are with respect to GND.
Note 3: The PB RST pin is internally pulled up to VCC with an internal
impedance of 10k typical. The TD pin has internal bias current.
Note 4: Measured with outputs open.
Note 5: The RST pin is an open drain output.
UNITS
ms
ms
ns
ns
µs
ms
ns
ms
ms
ms
pF
pF
sn1232 1232fas
3
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