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MAX696EPEMAXIMN/a90avaiMicroprocessor Supervisory Circuits
MAX696EWEMAXIMN/a2avaiMicroprocessor Supervisory Circuits
MAX696CPEMAXIM ?N/a50avaiMicroprocessor Supervisory Circuits
MAX696CWEMAXIM ?N/a100avaiMicroprocessor Supervisory Circuits
MAX697CPEMAXIMN/a5avaiMicroprocessor Supervisory Circuits
MAX697CWEMAXN/a457avaiMicroprocessor Supervisory Circuits
MAX697EWEMAXIM ?N/a45avaiMicroprocessor Supervisory Circuits
MAX697EWEMAXIMN/a34avaiMicroprocessor Supervisory Circuits


MAX697CWE+ ,Microprocessor Supervisory CircuitsApplicationsMAX69613 LLIN4● Computers GND● Controllers12 N.C.BATT ON 5● Intelligent Instruments● Cr ..
MAX697CWE+T ,Microprocessor Supervisory CircuitsFeatures● Adjustable Low-Line Monitor and Power-Down ResetThe MAX696/MAX697 supervisory circuits re ..
MAX697EWE ,Microprocessor Supervisory CircuitsELECTRICAL CHARACTERISTICS (Vcc = full operating range, VBATT = 2.8V, TA 2 25°C, unless otherwis ..
MAX697EWE ,Microprocessor Supervisory CircuitsFeatures . Adjustable Low Line monitor and Power Down Reset . Power OK/Reset Time Delay . ..
MAX697EWE+ ,Microprocessor Supervisory CircuitsElectrical Characteristics(V = full operating range, V = 2.8V, T = +25°C, unless otherwise noted.)C ..
MAX698 ,Low-Cost Power On Reset ICElectrical Characteristics(V = +5V, T = +25°C, unless otherwise noted.)CC APARAMETER CONDITIONS MIN ..
MB401 , 40 Amp Single Phase Bridge Rectifier 50 to 1000 Volts
MB401 , 40 Amp Single Phase Bridge Rectifier 50 to 1000 Volts
MB401 , 40 Amp Single Phase Bridge Rectifier 50 to 1000 Volts
MB40166 ,AD/DA CONVERTERFUJITSU SEMICONDUCTORDS04-28500-5EDATA SHEETASSPAD/DA CONVERTERMB40166/MB401761-CHANNEL 6-BIT AD/DA ..
MB40176 ,AD/DA CONVERTERFUJITSU SEMICONDUCTORDS04-28500-5EDATA SHEETASSPAD/DA CONVERTERMB40166/MB401761-CHANNEL 6-BIT AD/DA ..
MB40176 ,AD/DA CONVERTERFUJITSU SEMICONDUCTORDS04-28500-5EDATA SHEETASSPAD/DA CONVERTERMB40166/MB401761-CHANNEL 6-BIT AD/DA ..


MAX696CPE-MAX696CWE-MAX696EPE-MAX696EWE-MAX697CPE-MAX697CWE-MAX697EWE
Microprocessor Supervisory Circuits
_ General Description
The MAX6961697 supervisory circuits reduce the
complexity and number of components required for
power supply monitoring and battery control functions
in microprocessor systems. These include pP reset
and backup-battery switchover. watchdog timer,
CMOS RAM write protection, and power-failure warn-
ing. The MAX696/697 significantly improves system
reliability and accuracy compared to that obtained
with separate ICs or discrete components.
The MAX696 and MAX697 are supplied in 16 pin
packages and perform six functions:
1. A Reset output during power-up, power-down and
brownout conditions. The threshold for this "low
line" reset is adjustable by an external voltage
divider.
2. A Reset pulse if the optional watchdog timer has
not been toggled within a specified time.
3. Individual outputs for low line and watchdog fault
conditions.
4. The Reset time may be left at its default value of 50
ms. or may be varied with an external capacitor or
clock pulses.
5. A separate 1.3 volt threshold detector for power fail
warning, low battery detection, or to monitor a
power supply other than Vcc.
The MAX696 also has battery backup switching for
CMOS RAM. CMOS microprocessor, or other low
power logic.
The MAX697 lacks batte backup s_witching, but has
write protection pins ( Em and CEOUT) for CMOS
RAM or EPROM. In addition, it consumes less than
250 microamperes.
- Applications
Computers
Controllers
Intelligent Instruments
Automotive Systems
Critical pP Power Monitoring
Pin Configurations
Top View
~ RESET
woo ”m 1|va
le MAX697
AM] Al] Cite: ll MMI
Microprocessor
Supervisory Circuits
- Features
. Adjustable Low Line monitor and Power Down
. Power OK/Reset Time Delay
. Watchdog Timer-looms, 1.6 sec, or adjustable
. Minimum Component Count
. IPA Standby Current
. Battery Backup Power Switching (MAX696)
. Onboard Gating ot Chip Enable Signals (MAX697)
. Separate Monitor for Power Fail or Low Battery
Warning
Ordering Information
PART TEMP. RANGE PACKAGE
MAX696C/D 0°C to '70''C Dice
MAX696CPE (Y'C to '70''C 16 Lead Plastic DIP
MAX696CWE 0''C to +70°C 16 Lead Wide SO
MAX696EPE -40''C to r85''C 16 Lead Plastic DIP
MAX696EJE -40''C to +85°C 16 Lead CERDIP
MAX696EWE -MY'C to +35°C 16 Lead Wide so
MAX696MJE -55''C to '1250C 16 Lead CERDIP
MAX697C/D 0°C to '70''C Dice
MAX697CPE 0"C to *70°C 16 Lead Plastic DIP
MAX697CWE 0°C to +70°C 16 Lead Wide SO
MAX697EPE -40°C to +85°C 16 Lead Plastic DIP
MAX697EJE -40''C to 455°C 16 Lead CERDIP
MAX697EWE 40°C to +85°C 16 Lead Wide SO
_MAX697MUE -55''C to +125°C 16 Lead CERDIP
- - Typical Operating Circuit
——__——1
POWER Tll
CMDS RAM
7 Van hm - nth,
-at Vam
--. [VI A "A I IVI
' MAX696
butt RESET - m: nzsn
"I W1 - M' m
. l/ll
i m" LINE
MAX696 Typical Application
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7 Maxim Lngograted Products 1
£69/969XVW
MAX696/697
Microprocessor
Supervisory Circuits
ABSOLUTE MAXIMUM RATINGS
Terminal Voltage (with respect to GND)
Vcc .................................... -0.3V to 6.0V
VBATT .................................. -OBV to 6.0V
All Other Inputs (Note 1) ........ -03V to (Vow +0.5V)
Input Current
Vcc .......................................... 200mA
VBATT '.rm.rrr...m_.F_r..W._...__....9'.._...PF. 50mA
GND r...rr._t....Fm.Fm..F._Fm._..m_m..m__Fm__. 20mA
Output Current
Vow ........................... short circuit protected
All Other Outputs .............................. 20mA
Rate-of-Rise, me. Vcc ....................... 100V/ps
Operating Temperature Range
C suffix ................................ 0°C to 00°C
E suffix m__.FFm__.rr'.._F..t'..r_..r'_ -40°C to m85''C
M suffix ....r.-P..lPVFP_r.. -55°C to 425°C
Power Dissipation
16 Pin Plastic DIP
(Derate 7mW/"C above '70''C) ................ 600mW
16 Pin Small Outline
(Derate 7mW/°C above 40°C) ................ 600mW
16 Pin CERDIP
(Derate 10mW/°C above +85°C) ............... 600mW
Storage Temperature Range ............ -65''C to 0160°C
Lead Temperature (Soldering, 10 seconds) ........ 300°C
Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the dewce. These are stress ratings only. and
functional opelanon of the dewce at these or any other condmons above those rndlcated In me operational sectrons of the spamhcanons IS no!
implied. Exposure to absolute maxmmm rating conditions for extended periods may affect dewce rehabthty,
ELECTRICAL CHARACTERISTICS
(Vcc = full operating range, VBATT = 2.8V. TA = 2tPC, unless otherwise noted.)
PARAMETER CONDITIONS MIN TYP MAX UNIT84
Operating Voltage Range TA 2 Full
MAX696 Vcc 3.0 5.5
MAX696 VBAH 2 O Vcc -OBV V
MAX697 Vcc 3.0 5.5
Supply Current (MAX697) TA 2 Full 160 300 pA
BATTERY BACKUP SWITCHING (MAX696) I
IOUT = 1mA, TA = Full Vcc Ah3 Vcc -0.1
Vou, Output Voltage low = 50mA, TA = Full Vcc -(15 Vcc -0.25 V
Vow in Battery Backup Mode ty ;u2"5011A, Vcc < VBATT -0.2V, VesArr -0.1 VBATT -0.02 V
Iout = 1mA 1.5 4
Supply Current (excludes lour) low = 60mA 2.5 7 mA
. Vcc = OV, VBATT = A8V, TA a 25''C 0.6 1
Supply Current In Battery Backup Mode Vcc : 0V, VGA” = 2.8V, TA = Full 10 PA
5.5V > Vcc > 1hsArrHh3V
Battery Standby Leakage Current TA : 25''C -100 +20 nA
T, = Full -1 +0.02 pA
Battery Switchover Threshold Power Up 70 mV
Vcc-Vsarr Power Down 50
Battery Switchover Hysteresis 20 mV
BATT ON Output Voltage Ismx = 1.6mA 0.4 V
BATT ON Output Short BATT ON - Vow = 2.4V Sink Current 7 mA
Circuit Current BATT ON = VOUT. Vcc ' 0V 0.5 2.5 25 MA
RESET AND WATCHDOG TIMER
Low Line Voltage Threshold (LLm) I Vcr: = HN, +3v. TA = Full 1.25 120 1.35 I v
2 IVl/l X t IVI
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