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Supervisory Circuits. CAT705 Datasheet

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Supervisory Circuits. CAT705 Datasheet






CAT705 Circuits. Datasheet pdf. Equivalent




CAT705 Circuits. Datasheet pdf. Equivalent





Part

CAT705

Description

(CATxxx) Supervisory Circuits



Feature


CAT705, CAT706, CAT813 µP Supervisory Circuits FEATURES „ Accurate under vol tage system monitoring ¯¯¯¯¯¯ gua ranteed valid for VCC = 1.0V „ RESET 6µA supply current www.DataSheet4U.c om „ 200ms DESCRIPTION The CAT705, CA T706, and CAT813 provide reset and moni toring functions for the electronic sys tems. Each device monitors the system v oltage and maintains a reset o.
Manufacture

Catalyst Semiconductor

Datasheet
Download CAT705 Datasheet


Catalyst Semiconductor CAT705

CAT705; utput until that voltage reaches the dev ice’s specified trip value and then m aintains the reset output active condit ion until the device’s internal timer allows the system power supply to stab ilize. The CAT705, CAT706, and CAT813 h ave a watchdog input which can be used to monitor a system signal and cause a reset to be issued if the signal fails to change state prior .


Catalyst Semiconductor CAT705

to a timeout condition. ¯¯¯¯¯¯ The CAT705 and CAT706 provide a manual RES ET input which initiate reset if pulled low. The CAT705, CAT706 and CAT813 pro vide a RESET output which is low for th e CAT705 and CAT706, but high for the C AT813. There is a secondary supply moni tor included for power-fail warning (pi n PFI). The CAT706 has a threshold volt age 4.40V. The CAT705/ C.


Catalyst Semiconductor CAT705

AT813 have a threshold voltage of 4.65V. For Ordering Information details, see page 13. RESET pulse width „ Watchdo g timer function 1.6 sec timeout „ Bro wnout detection system reset for use wi th 3.0, 3.6, and 5.0 volt systems „ Pi n and function compatible with the MAX7 05/706/813L products „ Operating Range from -40°C to +85°C „ Available in SOIC 8-lead and MSOP 8-le.

Part

CAT705

Description

(CATxxx) Supervisory Circuits



Feature


CAT705, CAT706, CAT813 µP Supervisory Circuits FEATURES „ Accurate under vol tage system monitoring ¯¯¯¯¯¯ gua ranteed valid for VCC = 1.0V „ RESET 6µA supply current www.DataSheet4U.c om „ 200ms DESCRIPTION The CAT705, CA T706, and CAT813 provide reset and moni toring functions for the electronic sys tems. Each device monitors the system v oltage and maintains a reset o.
Manufacture

Catalyst Semiconductor

Datasheet
Download CAT705 Datasheet




 CAT705
µP Supervisory Circuits
CAT705, CAT706, CAT813
FEATURES
„ Accurate under voltage system monitoring
„ R¯¯E¯S¯E¯T¯ guaranteed valid for VCC = 1.0V
„ 6µA supply current
www.DataSheet4„U.c2om00ms RESET pulse width
„ Watchdog timer function 1.6 sec timeout
„ Brownout detection system reset for use with
3.0, 3.6, and 5.0 volt systems
„ Pin and function compatible with the
MAX705/706/813L products
„ Operating Range from -40°C to +85°C
„ Available in SOIC 8-lead and MSOP 8-lead
packages
APPLICATIONS
„ Microprocessor and microcontroller based
systems
„ Intelligent instruments
„ Control systems
„ Critical µP monitors
„ Portable equipment
PIN CONFIGURATION
SOIC 8-Lead
MR 1
8 WDO
VCC 2
GND 3
7 RESET
(RESET for CAT813)
6 WDI
PFI 4
5 PFO
MSOP 8-Lead
RESET
(RESET for CAT813)
WDO
1
2
8 WDI
7 PFO
MR 3
6 PFI
VCC 4
5 GND
DESCRIPTION
The CAT705, CAT706, and CAT813 provide reset and
monitoring functions for the electronic systems. Each
device monitors the system voltage and maintains a
reset output until that voltage reaches the device’s
specified trip value and then maintains the reset
output active condition until the device’s internal timer
allows the system power supply to stabilize.
The CAT705, CAT706, and CAT813 have a watchdog
input which can be used to monitor a system signal
and cause a reset to be issued if the signal fails to
change state prior to a timeout condition.
The CAT705 and CAT706 provide a manual R¯¯E¯S¯E¯T¯
input which initiate reset if pulled low. The CAT705,
CAT706 and CAT813 provide a RESET output which
is low for the CAT705 and CAT706, but high for the
CAT813.
There is a secondary supply monitor included for
power-fail warning (pin PFI).
The CAT706 has a threshold voltage 4.40V. The
CAT705/ CAT813 have a threshold voltage of 4.65V.
For Ordering Information details, see page 13.
PIN FUNCTIONS
Pin Name
¯M¯R¯
VCC
GND
PFI
¯P¯F¯O¯
WDI
R¯¯E¯S¯E¯T¯
RESET
¯W¯¯D¯O¯
Function
Manual Reset input
Power Supply
Ground
Power Fail voltage monitor Input.
Power Fail Output
Watchdog Timer Input
CMOS Push-Pull Active Low Reset
Output (CAT705 & CAT706)
CMOS Push-Pull Active High Reset
Output (CAT813)
Watchdog Timer Output
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. MD-3030, Rev. A




 CAT705
CAT705, CAT706, CAT813
BLOCK DIAGRAM
MR
VCC
VCC
250µA
RESET
CONTROLLER
www.DataSheet4U.com
4.65/4.40V
5W2kATCHDOG
WDI TRANSITION
DETECTION
PFI
TIMER
WATCHDOG
TIMER
1.25V
Device
CAT705
CAT706
CAT813
R¯¯E¯S¯E¯T¯
@ 4.65 V
@ 4.40 V
RESET
@ 4.65 V
¯M¯R¯
x
x
x
WDI
x
x
x
RESET
(RESET for CAT813)
WDO
PFO
¯W¯¯D¯O¯
x
x
x
PFI
@ 1.25 V
@ 1.25 V
@ 1.25 V
Doc. No. MD-3030, Rev. A
2 © Catalyst Semiconductor, Inc.
Characteristics subject to change without notice




 CAT705
ABSOLUTE MAXIMUM RATINGS(1)
Parameters
Supply Voltage
All other pins
Output Current RST, ¯R¯S¯T¯,W¯¯D¯O¯
Continuous Power Dissipations (TA = +70ºC)
SOIC 8-lead (derate 5.9mW/ºC above +70ºC)
MSOP 8-lead (derate 4.1mW/ºC above +70ºC)
Storage Temperature
www.DataSheet4UL.ceoamd Soldering (10 seconds max)
ESD Rating: Human Body Model
ESD Rating: Machine Model
RECOMMENDED OPERATING CONDITIONS
Parameter
VCC (TA = -40ºC to +85ºC)
All Other Pins
Ambient Temperature
CAT705, CAT706, CAT813
Ratings
6.5
-0.3 to (VCC + 0.3)
20
471
330
-65 to 150
+300
2000
200
Units
V
V
mA
mW
ºC
ºC
V
V
Range
1.2 to 5.5
-0.1 to (VCC + 0.1)
-40 to +85
Units
V
V
ºC
Notes:
(1) Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions outside of those listed in the operational sections of this
specification is not implied. Exposure to any absolute maximum rating for extended periods may affect device performance and reliability.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
3
Doc. No. MD-3030, Rev. A



Recommended third-party CAT705 Datasheet






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