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MAX1232CSAMAXIM,MAXIMN/a50000avaiMAX 1232 Microprocessor Monitor
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MAX1232CSA ,MAX 1232 Microprocessor MonitorBlock Diagram (p5 RST Vcc TD MAX1232 5 MAXIM TOL ' MAX1232 (INC) RST " T DlP/SO 50/41/1008 RST ..
MAX1232CSA ,MAX 1232 Microprocessor MonitorELECTRICAL CHARACTERISTICS (TA = TMIN Io TMAx; Vcc = +4.5V to +5 5V) PARAMETER r SYMBOL CONDITION ..
MAX1232CSA ,MAX 1232 Microprocessor MonitorApplications Computers Controlters Intelligent Instruments Automotive Systems Critical ..
MAX1232CSA ,MAX 1232 Microprocessor MonitorELECTRICAL CHARACTERISTICS (TA = TMIN Io TMAx; Vcc = +4.5V to +5 5V) PARAMETER r SYMBOL CONDITION ..
MAX1232CSA ,MAX 1232 Microprocessor MonitorGeneral Description The MAX1232 microprocessor (pP) supervisory circuit provides " "housekeepin ..
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MAX355MJE ,Fault-Protected Analog MultiplexersApplicationsMAX354MJE -55°C to +125°C 16 CERDIP**MAX355CPE 0°C to +70°C 16 Plastic DIPData-Acquisit ..
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MAX358CPE ,Fault-Protected Analog MultiplexerGeneral Description Maxim's Hl-508A and MAX358 are 8 channel single- ended (1 of 8) multiplexer ..
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MAX1232CPA-MAX1232CSA-MAX1232CWE-MAX1232EPA-MAX1232ESA-MAX1232EWE-MAX1232MJA
MAX 1232 Microprocessor Monitor
19-3899, Rev f, 2/91
General Description
The MAX1232 microprocessor (pP) supervisory circuit
provides pP "housekeeping" and power-supply super-
vision functions while consuming only 1/10th the power
of the DS1232, The MAX1232 enhances circuit reliability
In " systems by monitoring the power supply, monitoring
software execution, and providing a debounced manual
reset 'rlpt2, The MAX1232 is a plug-in upgrade ol the
Dallas DS1232
A reset pulse of at least 250ms duration is supplied on
power-up, power-down, and low-voltage brown-out con-
ditions (5% or 10% supply lolerances can be selected
digitally). Also featured ts a debounced manual reset
tnput that forces the reset outputs to their active states 'or
a minimum of 250ms, A digitally-programmable
watchdog timer monitors software execution and can be
programmed for timeout settings of 150ms, 600ms, or 1 .2sec.
The MAX1232 requires no external components.
Applications
Computers
Controllers
Intel igent Instruments
Automotive Systems
Crittcal pP Power Monitoring
/M] AlDyC[LAAl
MAX1232 Microprocessor Monitor
Features
. Consumes 1/10th the Power of the DS1232
. Precision Voltage Monitor - Adjustable +4.5V
or +4.75V
. Power OK/Reset Pulse Width - 250ms Min
. No External Components
. Adjustable Watchdog Timer - 150ms, 600ms, or
1 .2sec
. Debounced Manual Reset Input for External Overide
. Available in 8-pin DIP/Small Outline and
16-pin Wide Small Outline Packages
Ordering Information
PART TEMP. RANGE PIN-PACKAGE
MAX1232CPA -occ to +700 8 Plasttc DIP
MAXIP32CSA (TC to +700 - 8 so
MAX1232CWE owe to +701: 16 Wtde so
MAX1232C/D JC to not Dice"
MAX1232EPA -40"C) to " 85'C 8 Plastic DIP
meszESA -400C to +85 C 8 so i
MAX1232EWE -40'C to +85 c 16 Wide so
LMAX1232MJA -55'C to +125 C 8 CERDIP
. Contact factory for dice specifications.
Pin Configuration
- TOPVIEW V
Block Diagram m E . ( m
e MAXIM -
TO B MAX1232 11 SI
MAXIM 10L I 1 RST
MAX1232 GNU 7 Ts RS'
V::: T - .. - DlP/SO
- To/lout -rV PST
TOL TOLERANCE V- H* RFSFT , Is,'
- mm , "" _ ' GENERAIOR "" _ - . V
REF)- g = RST L04 E NC
l - Pl) RS" E MAXIM E Vrc
Pm NO E MAX1232 m NO
DEBOUNCE 7 JO A E s
- NO E T2] NO
'o, l/oils'', 7 WATCHDOG‘ _fT TOL I E T51
SELECT TIMER NO L E NO
GNC) T Ts] HST
WIDESO
MAXIM Maxim Integrated Products 1
Call toll free 1-800-998-8800 for free samples or literature.
ZEZLXVW
MAX 1 232
MAXf 232 Microprocessor Monitor
ABSOLUTE MAXIMUM RATINGS
Voltage on any pm (with respect to GND) _______. -1V to +7V
Operating Temperature Ranges:
MAX1232C_ - ................ JC ( +70''C
MAX1232E, - ................ -40"C to +850
MAX1232M_ - ..... _ , -55"C to +125°C
StorageTemperature Range .............. -65”C to +160 C
Lead Temperature (Soldenng, 10 sec.) ..........
+300"C
Stresses beyond [hose Hsled under "Abso/ute Maximum Ratings" may cause permanent damage to the devrce These are stress ranngs only and functional
operation or me dowcc aI lhese or any other cond/Uons beyond those md/caled 1n the operational SQCIIONS of the speohcatiors rs no! Implied Exposure [0
abso/ulc maumum ralmg cond/Irons for extended periods may affect dewce re/rabr/Ily
RECOMMENDED D.C. OPERATING CONDITIONS
(TA = TIVHN to TMAX)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage Vcc 4 5 5.0 5 5 V
S-T and PB RST
Input High Level (Note l) VIH 2-0 VCC +0.3 V
g and PB FIST
Input Low Level VI, -0 3 +0 8 V ,
D.C. ELECTRICAL CHARACTERISTICS
(TA = TMW to TMAX: Vcc = +4.5V to +5 5V)
PARAMETER _ SYMBOL CONDITIONS MIN TYP MAX UNITS
”Input Leakage s7 TOL IIL -1.C) +10 uA
Output Current HST loH VOH = 2_4V 4.0 -12 mA
Output Current RST, W IOL VOL = OAV 2 C) 10 mA
Operating Current (Note 2) Ice 50 200 pA
VCC 5% Trip Pont (Note 3) VCCTP TOL = GND 4.50 4,62 4 74 V
Vcc _10% Trip Palm (Note 3) YCCTP TOL = Vcc 4f1C_4_3_r 4 49 V
MllXI/VI
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