MAX699CWE ,Low Cost Power-On Reset and Watchdog ControllersFeatures
. Precision Voltage Monitor
t Power OK/Reset Time Delay
. Watchdog Timer
. Minimum ..
MAX699CWE ,Low Cost Power-On Reset and Watchdog ControllersElectrical Characteristics).
RESET (Small Outline devices only) Goes high when Vcc falls below int ..
MAX699CWE ,Low Cost Power-On Reset and Watchdog ControllerslVI/J X I An
Low Cost Power-On Reset
and Watchdog Controllers
MAX699CWE ,Low Cost Power-On Reset and Watchdog ControllersELECTRICAL CHARACTERISTICS
(TA = 25°C, Vcc = +5V, unless otherwise noted.)
those indicated in ..
MAX699CWE+ ,Low-Cost, Power-On Reset and Watchdog ControllersApplicationsPin Coniguration● Computers● ControllersTOP VIEW+● Intelligent InstrumentsV 1 8 GNDCC● ..
MAX699EPA ,Low Cost Power-On Reset and Watchdog ControllersElectrical Characteristics).
RESET (Small Outline devices only) Goes high when Vcc falls below int ..
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 ..
MAX698CPA-MAX698CWE-MAX698EPA-MAX699CPA-MAX699CWE-MAX699EPA-MAX699EWE
Low Cost Power-On Reset and Watchdog Controllers
General Description
The MAX698 and MAX699 monitor the +5V supply in
microgrocessor and digital systems. They supply a
RESET pulse of at least 140ms duration on power-up,
power-down, and during low voltage "brown out" condi-
tions. Circuit reliability is increased at reduced cost by
eliminating all external components and adjustments.
The MAX699 includes all features of the MAX698 but also
provides a "watchdog" input to monitor microprocessor
activity, The RESET output goes low if the watchdog
input (WDI) is not toggled within 1 second. The watch-
dog feature can be disabled by leaving WDI open.
Both parts are supplied in 8 lead DIP and 16 lead 0.3"
wide Small Outline (SO) packages and are specified from
0°C to +70"C for Ky grade devices and -40'C to +85°C
for Ty devices. The Small Outline versions, with more
pins than the 8 lead DIP, have additional outputs not
available in DIP packages. These are RESET (without
inversion) and Watchdog Output (WDO),
Applications
Computers
Controllers
Intelligent Instruments
Automotive Systems
Critical pp Power Monitoring
2AMLillDiethAMl
Low Cost Power-On Reset
and Watchdog Controllers
Features
. Precision Voltage Monitor
. Power OK/Reset Time Delay
. Watchdog Timer
. Minimum Component Count
Ordering Information
- PART TEMP. RANGE - PACKAGE
MAX698CPA ot to +700 8 Lead Plastic DlP
MAX698CWE 0''C to +70°C 16 Lead Wide so
MAX698EPA -40''C to +85°C 8 Lead Plastic DIP
MAX698EWE 40°C to +85''C 16 Lead Wide so
MAX699CPA 0°C to +70°C a Lead Plastic DIP
MAX699CWE (Y'C to +70''C 16 Lead Wide so
MAX699EPA -40°C to +850 8 Lead Plastic DIP
MAX699EWE -40'C to +85'C 16 Lead Wide so
Pin Configurations
opView
TypicalOperatingCircuit . v
Vcc I: El GND
q Vcc E "ldfJdf Terr
GND E mm”. , NC(W0l)'
GND E E] NC.
+5V +5V
1 Vcc GND 8
2 J--'---- GND E E RESET
Vcc "firx'lgf RESET TAL' Vcc I MAXIM 3] RE-SCT
a GNO M L 0:0 Vcc l: ms: E N/) (m-OO)'
GND E E "
4 GND NC. ' NC. Li] El NC.
_ N.C. E E NC.(WDl)'
Nl), [L El NC
NC [E E GNC)
'PIN LABELS|N( AE Fm MAX699 ONLY
MAXIM Maxim Integrated Products 1
& the latest literature: http://,
GGQXVW/BGQXVW
MAX698/MAX699
Low Cost Power-On Reset
and Watchdog Controllers
ABSOLUTE MAXIMUM RATINGS
Vcc ........................
Input Voltage (with respect_ to GND)
WDI, ADO, RESET, RESET FFF'
Operating Temperature Range
MAX69XC _ ............
MAX69XE .................
..... ,...-O.3V106.0V PateofRise,Vcc. .P._..l.._ TrFF» ___- ..1OOV/ps
Power Dissipation
.......... 0.3V to Vcc Plastic DIP (Derate 5mWf'C above 70''C) . . . . , _ . _ . 400mw
Small Outline (Derate 7mWf'C above 70°C) ..... . 600mw
........ . . 0°C to +70''C Storage Temperature _ . . . _ . _ . . _ _ . _ . . , _ , _ -65'C to +150°C
......... -40°C to +850 Lead Temperature (Soldering 10 seconds) _ . _ . _ _ _ . . , +300'C
Stresses above those listed under 'Absolure Maximum Hatings'may pause permanent damage to the dewce. These are stress ratings only, and luncllona/
operation of the dewce at these or any other conditions above those mdicated In the operations sections or the specifications IS not implied Expos ure to absolute
mammum ralmg conditions for extended periods may affect device reliability,
ELECTRICAL CHARACTERISTICS
(TA--- - 25' C, Vcc-- - WN, unless otherwise noted)
[ PARAMETER CONDITIONS MIN TYP MAX UNITS "
' Operating Voltage Range TA = Full 3.0 5 5 v I
Supply Current 5 mA
Power Up Reset De-Assertion TA = Full 4.5 4.65 4.75 V
Power Down Reset Assertion TA = Full 4 4 V
Hysteresis 40 mV
Reset Output Pulse Width 140 500 ms
RESET Output (Open Drain)
Output Low ISINK = 1.6mA, Vcc = 4.4V 0.4 V
Output High ISOURCE = 1pA, Vcc = 5V l 3.5
RESET Output - so Pkg. Only F
Output Low ISINK = 1.6mA. Vcc = 5V 0.4 V
Output High Isounu; = IPA, Vcc = 4.4V 3.5
WDC) Output - SO MAX699 Only
Output Low ISINK = 1.6mA, Vcc = 5V 0.4 V
Output High |SOURCE = IPA, Vcc = 4.4V 3.5
MAX699 Watchdog
Timeout Period 10 1.6 2.25 sec
MAX699 Minimum WDI Input
Pulse Width 200 ns
MAX699 WDI Input Threshold
Logic Low Vcc = +5V O 8 V
Logic High 3.8
MAX699 WDI Input Current W8: : iff -50 g, 50 “A 1
IVI l] X I IV!
