ICL7665AESA+T ,µP Voltage Monitor with Dual Over/Undervoltage DetectionICL766519-0001; Rev 3; 11/15Microprocessor Voltage Monitor withDual Over/Undervoltage Detection____ ..
icl7665bcja ,Microprocessor Voltage Monitor withFeatures' µP Over/Undervoltage WarningThe ICL7665 warns microprocessors (m Ps) of overvolt-age and ..
ICL7665BCPA ,Microprocessor Voltage Monitor withELECTRICAL CHARACTERISTICS(V+ = 5V, T = +25°C, unless otherwise noted.)APARAMETER SYMBOL CONDITIONS ..
ICL7665BCPA ,Microprocessor Voltage Monitor withApplicationsICL7665BCPA 0°C to +70°C 8 Plastic DIPµP Voltage Monitoring ICL7665CSA 0°C to +70°C 8 S ..
ICL7665BCSA ,Microprocessor Voltage Monitor withFeatures' µP Over/Undervoltage WarningThe ICL7665 warns microprocessors (m Ps) of overvolt-age and ..
ICL7665CPA ,Microprocessor Voltage Monitor withICL766519-0001; Rev 2; 8/97Microprocessor Voltage Monitor withDual Over/Undervoltage Detection_____ ..
IDT72V70200PF , 3.3 VOLT TIME SLOT INTERCHANGE DIGITAL SWITCH 512 x 512
IDT72V70800TF , 3.3 VOLT TIME SLOT INTERCHANGE DIGITAL SWITCH 512 x 512
IDT72V70840DA , 3.3 VOLT TIME SLOT INTERCHANGE DIGITAL SWITCH
IDT72V71660BB , 3.3 VOLT TIME SLOT INTERCHANGE DIGITAL SWITCH 16,384 X 16,384
IDT72V73260BB , 3.3 VOLT TIME SLOT INTERCHANGE DIGITAL SWITCH 16,384 X 16,384
IDT72V811L15TF , 3.3 VOLT DUAL CMOS SyncFIFO™
ICL7665ACSA+-ICL7665ACSA-T-ICL7665AESA+-ICL7665AESA+T-ICL7665CSA+
µP Voltage Monitor with Dual Over/Undervoltage Detection
_______________General DescriptionThe ICL7665 warns microprocessors (µPs) of overvolt-
age and undervoltage conditions. It draws a typical
operating current of only 3µA. The trip points and hys-
teresis of the two voltage detectors are individually pro-
grammed via external resistors to any voltage greater
than 1.3V. The ICL7665 will operate from any supply
voltage in the 1.6V to 16V range, while monitoring volt-
ages from 1.3V to several hundred volts. The Maxim
ICL7665A is an improved version with a 2%-accurate
VSET1threshold and guaranteed performance over
temperature.
The 3µA quiescent current of the ICL7665 makes it
ideal for voltage monitoring in battery-powered sys-
tems. In both battery- and line-powered systems, the
unique combination of a reference, two comparators,
and hysteresis outputs reduces the size and compo-
nent count of many circuits.
________________________ApplicationsµP Voltage Monitoring
Low-Battery Detection
Power-Fail and Brownout Detection
Battery Backup Switching
Power-Supply Fault Monitoring
Over/Undervoltage Protection
High/Low Temperature, Pressure, Voltage Alarms
____________________________Features
µP Over/Undervoltage Warning
Improved Second Source
Dual Comparator with Precision Internal Reference
3µA Operating Current
2% Threshold Accuracy (ICL7665A)
1.6V to 16V Supply Voltage Range
On-Board Hysteresis Outputs
Externally Programmable Trip Points
Monolithic, Low-Power CMOS Design
______________Ordering Information
Ordering Information continued on last page.
ICL7665
Microprocessor Voltage Monitor with
Dual Over/Undervoltage DetectionOUT2
SET2
HYST2GND
SET1
HYST1
OUT1
ICL7665
DIP/SOTOP VIEW
_________________Pin ConfigurationsICL7665
OUT1OUT2
SET2SET1VIN2VIN173
GND
OVERVOLTAGE
DETECTION
UNDERVOLTAGE
DETECTION
SIMPLE THRESHOLD DETECTORNMI
__________Typical Operating Circuit19-0001; Rev 3; 11/15
PARTTEMP. RANGEPIN-PACKAGEICL7665CPA0°C to +70°C8 Plastic DIP
ICL7665ACPA0°C to +70°C8 Plastic DIP
ICL7665BCPA0°C to +70°C8 Plastic DIP
ICL7665CSA0°C to +70°C8 SO
ICL7665ACSA0°C to +70°C8 SO
ICL7665BCSA0°C to +70°C8 SO
ICL7665CJA0°C to +70°C8 CERDIP
ICL7665ACJA0°C to +70°C8 CERDIP
ICL7665BCJA0°C to +70°C8 CERDIP
+Denotes a lead(pb)-free/RoHS-compliant package.
icroprocessor Voltage Monitor withDual Over/Undervoltage Detection
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS(V+ = 5V, TA= +25°C, unless otherwise noted.)
Stresses beyond 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 beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Note 1:Due to the SCR structure inherent in the CMOS process used to fabricate these devices, connecting any terminal to volt-
ages greater than (V+ + 0.3V) or less than (GND - 0.3V) may cause destructive latchup. For this reason, we recommend
that inputs from external sources that are not operating from the same power supply notbe applied to the device before its
supply is established, and that in multiple supply systems, the supply to the ICL7665 be turned on first. If this is not possi-
ble, currents into inputs and/or outputs must be limited to ±0.5mA and voltages must not exceed those defined above.
Supply Voltage (Note 1).........................................-0.3V to +18V
Output Voltages OUT1 and OUT2
(with respect to GND) (Note 1)..........................-0.3V to +18V
Output Voltages HYST1 and HYST2
(with respect to V+) (Note 1).............................+0.3V to -18V
Input Voltages SET1 and SET2
(Note 1)........................................(GND - 0.3V) to (V+ + 0.3V)
Maximum Sink Output Current
OUT1 and OUT2.............................................................25mA
Maximum Source Output Current
HYST1 and HYST2........................................................-25mA
Continuous Power Dissipation (TA= +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C)............727mW
SO (derate 5.88mW/°C above +70°C)........................471mW
CERDIP (derate 8.00mW/°C above +70°C)................640mW
TO-99 (derate 6.67mW/°C above +70°C)...................533mW
Operating Temperature Ranges
ICL7665C_ _.......................................................0°C to +70°C
ICL7665I_ _.....................................................-20°C to +85°C
ICL7665E_ _....................................................-40°C to +85°C
Storage Temperature Range.............................-65°C to +160°C
Lead Temperature (soldering, 10sec).............................+300°C
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSOperating Supply VoltageV+
ICL7665TA= +25°C1.616
TA = TMINto TMIN1.816
ICL7665ATA = TMINto TMIN2.016
ICL7665BTA= +25°C1.610
Input Trip VoltageVSET
ICL7665, ICL7665B, TA= +25°CVSET11.1501.3001.450
VSET21.2001.3001.400
ICL7665A, TA= +25°CVSET11.2751.3001.325
VSET21.2251.3001.375
ICL7665A, TA= TMINto TMAXVSET11.2501.3001.350
VSET21.2151.3001.385
VSETTempco100 ppm/°C
ROUT1, ROUT2, RHYST1, RHYST2= 1MΩ0.004%/V
Supply CurrentI+
GND £VSET1,
VSET2£V+,
all outputs open
circuit
V+ = 2V2.510A
V+ = 9V2.610
V+ = 15V2.915
ICL7665B,= +25°C
V+ = 2V2.510
V+ = 9V2.610
TA = TMINto TMIN1.810
ICL7665,= +25°C;
ICL7665A,= TMINto TMAX
Supply Voltage Sensitivity
of VSET1, VSET2
icroprocessor Voltage Monitor witDual Over/Undervoltage Detection
ELECTRICAL CHARACTERISTICS (continued)(V+ = 5V, TA= +25°C, unless otherwise noted.)
PARAMETERCONDITIONSMINTYPMAXUNITSOutput Leakage CurrentIOLK,
IHLK
All grades, VSET= 0V or
VSET‡2V, TA= +25°C
OUT1, OUT210200
HYST1, HSYT2-10-100
OUT1, OUT22000
HYST1, HSYT2-500
ICL7665B, V+ = 9V,= TMINto TMAX
OUT1, OUT22000
HYST1, HSYT2-500
VOUT1Saturation
Voltage
VSET1= 2V,
IOUT1= 2mA
ICL7665, ICL7665B: V+ = 2V0.200.50
ICL7665A: V+ = 2V0.20
All grades: V+ = 5V0.100.30
ICL7665, ICL7665A: V+ = 15V0.060.20
ICL7665B: V+ = 9V0.060.25
All grades: V+ = 2V-0.15-0.30
All grades: V+ = 5V-0.05-0.15
ICL7665, ICL665A: V+ = 15V-0.02-0.10
ICL7665B: V+ = 9V-0.02-0.15
VOUT2Saturation
Voltage
VSET2= 0V,
IOUT2= 2mA
All grades: V+ = 2V0.200.50All grades: V+ = 5V0.150.30
ICL7665, ICL665A: V+ = 15V0.110.25
ICL7665B: V+ = 9V0.110.30
VHYST2Saturation
Voltage
All grades: V+ = 2V-0.25-0.80
All grades: V+ = 5V-0.43-1.00
ICL7665: V+ = 15V-0.35-0.80
ICL7665A: V+ = 15V-0.35-1.00
ICL7665B: V+ = 9V-0.35-1.00
ISETGND £VSET£V+±0.01±10nAVSET0.1mV
VSET1–
VSET2±5±50mV
±0.1mV
SYMBOLVHYST1Saturation
VoltageVVSET1= 2V,
IHYST1= -0.5mA
ICL7665, ICL7665A,
V+ = 15V,= TMINto TMAX
VSET2= 2V,
IHYST2= -0.2mA
VSET2= 2V,
IHYST2= -0.5mA
VSET Input Leakage
Current
ROUT, RHYST= 1MW
ROUT, RHYST= 1MW
ROUT= 4.7kW, RHYST= 20kW,
VOUTLO = 1% V+, VOUTHI = 99% V+
VSETInput Change for
Complete Output
Change
Difference in Trip
Voltage
Output/Hysteresis
Difference
icroprocessor Voltage Monitor withDual Over/Undervoltage Detection
AC OPERATING CHARACTERISTICS(V+ = 5V, TA= +25°C, unless otherwise noted.)
VSETswitched between 1.0V and 1.6V,
ROUT= 4.7kΩ, CL= 12pF,
RHYST= 20kΩ
1.8tH2f
Output Fall Times4.0tH1f
0.7tO2f
0.6tO1f
VSETswitched between 1.0V and 1.6V,
ROUT= 4.7kΩ, CL= 12pF,
RHYST= 20kΩ
0.7tH2r
Output Rise Times7.5tH1r
0.8tO2r
0.6tO1r
VSETswitched from 1.6V to 1.0V,
ROUT= 4.7kΩ, CL= 12pF,
RHYST= 20kΩtSH2d
Output Delay Time,
Input Going Low60tSO2dtSH1dtSO1d
VSETswitched from 1.0V to 1.6V,
ROUT= 4.7kΩ, CL= 12pF,
RHYST= 20kΩ
CONDITIONStSH2d
Output Delay Time,
Input Going High55tSO2dtSH1dtSO1d
UNITSMINTYPMAXSYMBOLPARAMETERINPUT
OUT1
HYST1
OUT2
HYST2
tO1f
tSO1d
tH1r
tSO2d
tSH2d
tO2rtO2f
tSH2d
tO1r
1.6V
1.0V
V+ (5V)
GND
V+ (5V)
GND
V+ (5V)
GND
V+ (5V)
GND
VSET1,VSET2
tSH1d
tH2rtH2f
tSO2d
tSH1dtH1f
tSO1d
_______________________________________________________Switching Waveforms
icroprocessor Voltage Monitor withDual Over/Undervoltage DetectionOUT1 SATURATION VOLTAGE AS A
FUNCTION OF OUTPUT CURRENT
ICL7665-01
IOUT OUT1 (mA)
V+ = 2V
V+ = 9V
V+ = 15V
V+ = 5V
SUPPLY CURRENT AS A
FUNCTION OF SUPPLY VOLTAGE (m
SUPPLY VOLTAGE (V)
ICL7665-0246810121416
TA = +25°C
TA = +70°C
0V £ VSET1, VSET2 £ V+
TA = -20°C
SUPPLY CURRENT AS A
FUNCTION OF AMBIENT TEMPERATUREAMBIENT TEMPERATURE (°C)
ICL7665-03
(m
V+ = 15V
V+ = 9V
V+ = 2V
0V £ VSET1, VSET2 £ V+
-2.0
HYST1 OUTPUT SATURATION VOLTAGE
vs. HYST1 OUTPUT CURRENT
(V
HYST1 OUTPUT CURRENT (mA)
ICL7665-04
V+ = 2VV+ = 5V
V+ = 9V
V+ = 15V
-5-4-3-2-10
HYST2 OUTPUT SATURATION VOLTAGE
vs. HYST2 OUTPUT CURRENT (V
HYST2 OUTPUT CURRENT (mA)
ICL7665-05
V+ = 2V
V+ = 15V
V+ = 9V
V+ = 5V
OUT2 SATURATION VOLTAGE AS A
FUNCTION OF OUTPUT CURRENT
(V
IOUT OUT2 (mA)
ICL7665-06
V+ = 2V
V+ = 5V
V+ = 9V
V+ = 15V
__________________________________________Typical Operating Characteristics(TA = +25°C, unless otherwise noted.)
_______________Detailed DescriptionAs shown in the block diagram of Figure 2, the Maxim
ICL7665 combines a 1.3V reference with two com-
parators, two open-drain N-channel outputs, and two
open-drain P-channel hysteresis outputs. The refer-
ence and comparator are very low-power linear CMOS
circuits, with a total operating current of 10mA maxi-
mum, 3mA typical. The N-channel outputs can sink
greater than 10mA, but are unable to source any cur-
rent. These outputs are suitable for wire-OR connections
and are capable of driving TTL inputs when an external
pull-up resistor is added.
The ICL7665 Truth Table is shown in Table 1. OUT1 is
an inverting output; all other outputs are noninverting.
HYST1 and HYST2 are P-channel current sources
whose sources are connected to V+. OUT1 and OUT2
are N-channel current sinks with their sources connect-
ed to ground. Both OUT1 and OUT2 can drive at least
one TTL load with a VOLof 0.4V.
In spite of the very low operating current, the ICL7665
has a typical propagation delay of only 75ms. Since the
comparator input bias current and the output leakages
are very low, high-impedance external resistors can be
used. This design feature minimizes both the total sup-
ply current used and loading on the voltage source that
is being monitored.
icroprocessor Voltage Monitor with
Dual Over/Undervoltage DetectionFigure 1. Test Circuit
HYST2 = OFF = LOWOUT2 = ON = LOWVSET2 < 1.3V
HYST2 = ON = HIOUT2 = OFF = HIVSET2> 1.3V
HYST1 = OFF = LOWOUT1= OFF = HIVSET1< 1.3V
HYST1 = ON = HIOUT1 = ON = LOWVSET1> 1.3V
HYSTERESISOUTPUTINPUT*
Table 1. ICL7665 Truth TableHYST1
HYST2
OUT1
OUT2
TO V+
SET2
SET1
1.3V
BANDGAP
REFERENCE
Figure 2. Block Diagram
ICL7665
OUT1
HYST1
SET1
GND
OUT2
SET2
HSYT2
12pF12pF12pF12pF
OUT1
HYST1
OUT2
HSYT2
4.7k
4.7k
1.6V
1.0V
INPUT
20k20k
* See Electrical Characteristics
OUT1 is an inverting output; all others are noninverting. OUT1
and OUT2 are open-drain, N-channel current sinks. HYST1
and HYST2 are open-drain, P-channel current sinks.
