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CAT1232LPW-T2 Folha de dados(PDF) 3 Page - Catalyst Semiconductor

Nome de Peças CAT1232LPW-T2
Descrição Electrónicos  5V and 3.3V Supply Monitor, Watchdog Timer, Manual Reset, with Active High & Low Resets
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Fabricante Electrônico  CATALYST [Catalyst Semiconductor]
Página de início  http://www.catalyst-semiconductor.com
Logo CATALYST - Catalyst Semiconductor

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CAT1232, CAT1832
ELECTRICAL CHARACTERISTICS
Unless otherwise stated, 1.0V - VCC - 5.5V and over the operating temperature range of -40ºC to +85ºC. All
voltages are referenced to ground.
Symbol Parameter
Conditions
Min
Typ
Max
Units
VCC
Supply Voltage
1.0
5.5
V
VCC = 5.5V, CAT1232LP
35
50
ICC1
Supply Current
VCC = 3.6V, CAT1832
20
35
µA
(5)
2
VIH
ST and PBRST
¯¯¯¯¯¯ Input High
Level
(6)
VCC - 0.4V
VCC + 0.3V
V
VCC = 5.5V, CAT1232LP
-0.3
0.8
VIL
ST and PBRST
¯¯¯¯¯¯ Input Low
Level
VCC = 3.6V, CAT1832
0.5
V
VCCTP
VCC Trip Point (TOL = GND)
CAT1232LP
4.50
4.62
4.74
V
VCCTP
VCC Trip Point (TOL = VCC)
CAT1232LP
4.25
4.37
4.49
V
VCCTP
VCC Trip Point (TOL = GND)
CAT1832
2.80
2.88
2.97
V
VCCTP
VCC Trip Point (TOL = VCC)
CAT1832
2.47
2.55
2.64
V
tTD
Watchdog Time-Out Period
TD = GND
62.5
150
250
ms
tTD
Watchdog Time-Out Period
TD = VCC
500
1200
2000
ms
tTD
Watchdog Time-Out Period
TD floating
250
600
1000
ms
VOH
Output Voltage
I = -500µA
(3)
VCC -0.5V VCC -0.1V
V
IOH
Output Current
Output = 2.4V
(2)
-350
µA
IOL
Output Current
Output = 0.4V,
10
mA
IIL
Input Leakage
(1)
-1.0
1.0
µA
RPU
Internal Pull-Up Resistor
(1)
32
40
55
kΩ
CIN
Input Capacitance
5
pF
C
Output Capacitance
7
pF
OUT
PBRST
¯¯¯¯¯¯ Manual Reset
Minimum Low Time
PBRST
¯¯¯¯¯¯ = V
20
ms
tPB
IL
t
Reset Active Time
250
600
1000
ms
RST
ST
¯¯ Pulse Width
t
(4)
20
ns
ST
VCC Fail Detect to RESET or
RESET
¯¯¯¯¯¯
t
5
8
µs
RPD
t
V
Slew Rate
20
µs
F
CC
PBRST
¯¯¯¯¯¯ Stable LOW to RESET
and RESET
¯¯¯¯¯¯ Active
t
20
ms
PDLY
VCC Detect to RESET or
RESET
¯¯¯¯¯¯ Inactive
tRPU
tRISE = 5µs
250
600
1000
ms
t
V
Slew Rate
4.25V to 4.75V
0
ns
R
CC
Notes:
(1) PBRST
¯¯¯¯¯¯ is internally pulled HIGH to V through a nominal 40kΩ resistor (RPU).
CC
(2) RESET
¯¯¯¯¯¯ is an open drain output on the CAT1232LP.
(3) RESET remains within 0.5V of VCC on power-down until VCC falls below 2V. RESET remains within 0.5V of ground on power-down until
V
falls below 2.0V.
CC
(4) Must not exceed the minimum watchdog time-out period (tTD). The watchdog circuit cannot be disabled. To avoid a reset, ST
¯¯ must be
strobed.
≥ 2.7V.
(5) Measured with VCC
(6) Measured with V
< 2.7V.
CC
© Catalyst Semiconductor, Inc.
3
Doc. No. MD-3018 Rev. D
Characteristics subject to change without notice


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