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LH1085AT1VISHAYN/a1000avaiHigh Voltage Optically Coupled Solid ...
LH1191AT1N/a1783avaiHigh Voltage Optically Coupled Solid ...
LH1527BACINFINEONN/a70avaiSolid State Relay (SSR) 1FormC
LH1527BTINFN/a200avaiSolid State Relay (SSR) 1FormC
LH1537AABTRINFINEONN/a21800avaiSolid State Relay (SSR) 1FormC
LH1537AACSIEN/a200avaiSolid State Relay (SSR) 1FormC
LH1537ABINFINEONN/a65avaiSolid State Relay (SSR) 1FormC


LH1537AABTR ,Solid State Relay (SSR) 1FormCCharacteristics T =25°CAinformation purposes only and are not part of the testing Minimum and maxim ..
LH1537AAC ,Solid State Relay (SSR) 1FormC LH1527, LH1537 1 Form CAbsolute Maximum Ratings ..
LH1537AB ,Solid State Relay (SSR) 1FormC LH1527, LH1537 1 Form CAbsolute Maximum Ratings ..
LH1540AAB ,1 Form A Solid State Relayabsolute Maximum Ratings for extended periods of I = 3 to 10 mAFon 80 time can adversely affect re ..
LH1540AAB ,1 Form A Solid State RelayElectrical Characteristics, T =25°CAMinimum and maximum values are testing requirements. Typical va ..
LH1540AAB ,1 Form A Solid State RelayRevision 06-March-02 3–155Load Current (mA) Typical Performance CharacteristicsFigure 1. LED Vo ..
LM2907M-8 ,Frequency to Voltage ConverterApplicationsvoltage conversion
LM2907MX-8 ,Frequency to Voltage ConverterFeaturesfrequency reaches or exceeds a selected rate. The tachom-eter uses a charge pump technique ..
LM2907MX-8 ,Frequency to Voltage ConverterGeneral Descriptionn Zener regulator on chip allows accurate and stableThe LM2907, LM2917 series ar ..
LM2907N ,Frequency to Voltage ConverterFeaturesfrequency reaches or exceeds a selected rate. The tachom-eter uses a charge pump technique ..
LM2907N/NOPB ,Frequency to Voltage Converter 14-PDIP -40 to 85Features 3 DescriptionThe LM2907 and LM2917 devices are monolithic1• Ground Referenced Tachometer I ..
LM2907N8 ,Frequency to Voltage ConverterFeaturesfrequency reaches or exceeds a selected rate. The tachom-eter uses a charge pump technique ..


LH1085AT1-LH1191AT1-LH1527BAC-LH1527BT-LH1537AABTR-LH1537AAC-LH1537AB
High Voltage Optically Coupled Solid ...



A. LED Voltage vs. Temperature
C. LED Current for Switch Turn-Off vs. Temperature
E. Variation in ON-Resistance vs. LED Current
B. LED Dropout Voltage vs. Temperature
D. ON-Resistance vs. Temperature
F. Switch Capacitance vs. Applied Voltage

AMBIENT TEMPERATURE (°C)
LED FORWARD VOLTAGE (V)
AMBIENT TEMPERATURE (°C)
LED FORWARD CURRENT FOR SWITCH
TURN-ON/OFF (%) NORMALIZED TO 25
CHANGE IN ON-RESISTANCE (%)
NORMALIZED TO 25
AMBIENT TEMPERATURE (°C)
APPLIED VOLTAGE (V)20406080100
CAPACITANCE (pF)
A. Insertion Loss vs. Frequency
C. Leakage Current vs. Applied Voltage (NO)
E. Leakage Current vs. Applied Voltage (NC)

INSERTION LOSS (dB)
FREQUENCY (Hz)
APPLIED VOLTAGE (V)
LEAKAGE CURRENT (pA)
APPLIED VOLTAGE (V)50100150200250400
LEAKAGE CURRENT (nA)
B. Output Isolation
D. Leakage Current vs. Applied Voltage at Elevated
Temperatures (NO)
F. Leakage Current vs. Applied Voltage at Elevated
Temperatures (NC)
APPLIED VOLTAGE (V)50100150200250400
LEAKAGE CURRENT (nA)
300350
A. Switch Breakdown Voltage vs. Temperature
C. Switch Offset Voltage vs. LED Current
E. NO Turn-On Time vs. LED Current
B. Switch Offset Voltage vs. Temperature
D. ton/toff vs. Temperature
F. NC Turn-Off Time vs. LED Current

AMBIENT TEMPERATURE (°C)
CHANGE IN BREAKDOWN VOLTAGE (%)
NORMALIZED TO 25
LED FORWARD CURRENT (mA)
TURN-ON TIME (ms)
CHANGE IN TURN-ON/OFF TIME (%)
NORMALIZED TO 25
AMBIENT TEMPERATURE (°C)
A. NC Turn-On Time vs. LED CurrentB. NO Turn-Off Time vs. LED CurrentVery low operating current
LED FORWARD CURRENT (mA)
TURN-ON TIME (ms)
LED FORWARD CURRENT (mA)
TURN-OFF TIME (ms)
FEATURESHigh-speed operation1500 Vrms I/O isolationCurrent-limit protectionHigh surge capabilityLinear, ac/dc operationClean, bounce-free switchingExtremely low power consumptionHigh-reliability monolithic receptorSurface-mountable
APPLICATIONS
PCMCIA Type 2 cardsBattery powered switch applicationsGeneral telecom switching Telephone line interface
– On/off hook
– Ring relay
– Ground startProgrammable controllersInstrumentation
DESCRIPTION

The LH1525 relay is an SPST normally open switche (1 Form A
and Dual 1 Form A respectively) in small-outline packages (SOP).
They require a minimal amount of LED drive current to operate,
making them ideal for battery powered and power consumption
sensitive applications.
The relays are constructed using a GaAlAs LED for actuation
control and an integrated monolithic die for the switch output.
The die, fabricated in a high-voltage dielectrically isolated
BCDMOS technology, is comprised of a photodiode array, switch-
control circuitry, and MOSFET switches. In addition, the relays
employ current-limiting circuitry enabling it to pass FCC 68.302
and other regulatory surge requirements when overvoltage
protection is provided.
The LH1525 (1 Form A) is packaged in an 8-pin, plastic SOP
(LH1525ACD). Available in sticks or on tape and reel.
Figure 1. LH1525ACD Functional/Pin Diagram
S
HEAT SINK
SS'
Functional Description
Figure 3 shows the switch characteristics of the relays.
The relay exhibits an ON-resistance that is exception-
ally linear through the origin and up to the knee current
(Ik). Beyond Ik, the incremental resistance decreases,
minimizing internal power dissipation. Overload
currents are clamped at ILMT by the internal current-limit
circuitry. The current-limiting circuitry exhibits a nega-
tive temperature coefficient, thereby reducing the
current-limit value when relay temperature is increased.
An extended clamp condition, which increases relay
temperature, decreases the current-limit value,
resulting in a current foldback characteristic. When the
overload is removed, the relay resumes its normal ON-
resistance characteristic.
Figure 3. Typical ac/dc ON Characteristics

ILMT
-V+V
10 W
In a 1 Form A relay, to turn the relay on, forward current
is applied to the LED. The amount of current applied
determines the amount of light produced for the photo-
diode array. This photodiode array develops a drive-
voltage for the MOSFET switch outputs. For high-
temperature or high-load current operations, more LED
current is required.
Thermal Considerations
o minimize thermal resistance, pins 6 and 7 of the
LH1525ACD are formed into a tab. This tab should be
soldered to a printed circuit board land pattern of equal
or greater size. Do Not run metal underneath the
device or the input-to-output isolation could be jeopar-
dized.
Absolute Maximum Ratings At 25°C

Stresses in excess of the Absolute Maximum Ratings
can cause permanent damage to the device. These are
absolute stress ratings only. Functional operation of the
device is not implied at these or any other conditions in
excess of those given in the operational sections of the
data sheet. Exposure to Absolute Maximum Ratings for
extended periods can adversely affect the device reli-
ability.
Recommended Operating Conditions
Electrical Characteristics T
A=25°C
Minimum and maximum values are testing require-
ments. Typical values are characteristics of the device
and are the result of engineering evaluations. Typical
values are for information purposes only and are not
part of the testing requirements.
FEATURESLoad voltage, 350 VLoad current 70 mATRON, typical at 100 mA3750 Vrms I/O isolationCurrent-limit protectionHigh-surge capabilityLinear, ac/dc or dc operationClean, bounce-free switchingLow power consumptionHigh-reliability monolithic receptorSurface-mountable
APPLICATIONS
General telecom switching
– On/off-hook
– Dial pulse
– Ground start
– Ground fault protectionInstrumentationIndustrial controlsPeripherals
DESCRIPTION

The LH1533 (Dual 1 Form A) relays are SPST normally open
switches that can replace electromechanical relays in many appli-
cations. The relays are constructed using a GaAlAs LED for actua-
tion control and an integrated monolithic die for the switch output.
The die, fabricated in a high-voltage dielectrically isolated
BICMOS technology, is comprised of a photodiode array, switch
control circuitry, and MOSFET switches. In addition, the relay
employs current-limiting circuitry enabling it to pass FCC 68.302
and other regulatory voltage surge requirements when overvoltage
protection is provided.
The LH1533 (Dual 1 Form A) relay is packaged in an 8-pin DIP
(LH1533AB) or in a surface-mount, option 9 (LH1533AAC). The
surface-mount devices are available in sticks or on tape and reel.
Figure 1. Functional Diagram
Absolute Maximum Ratings TA=25°C
Stresses in excess of the Absolute Maximum Ratings
can cause permanent damage to the device. These are
absolute stress ratings only. Functional operation of the
device is not implied at these or any other condition in
excess of those given in the operational sections of the
data sheet. Exposure to Absolute Maximum Ratings
for extended periods can adversely affect the device
reliability.
Electrical Characteristics T
A=25°C
Minimum and maximum values are testing require-
ments. Typical values are characteristics of the device
and are the result of engineering evaluations. Typical
values are for information purposes only and are not
part of the testing requirements.
FEATURESExtremely low operating currentHigh-speed operation3750 Vrms I/O isolationCurrent-limit protectionHigh surge capabilityLinear, ac/dc operationdc-only optionClean, bounce-free switchingLow power consumptionHigh-reliability monolithic receptorSurface-mountable
APPLICATIONS
General telecom switching:Telephone line interfaceOn/off hookRing relayBreak switchGround startBattery-powered switch applicationsIndustrial controls:Microprocessor control of solenoids,
lights, motors, heaters, etc.Programmable controllersInstrumentation
DESCRIPTION

The LH1525 and LH1526 relays as SPST normally open switches
(1 Form A) that can replace electromechanical relays in many
applications. The relays require a minimal amount of LED drive
current to operate, making it ideal for battery-powered and power
consumption sensitive applications. The relay is constructed using
a GaAIAs LED for actuation control and an integrated monolithic
die for the switch output. The die, fabricated in a high-voltage
dielectrically isolated BCDMOS technology, comprised of a photo-
diode array, switch-control circuitry, and MOSFET switches. In
addition, the relay employs current-limiting circuitry, enabling it to
pass FCC 68.302 and other regulatory surge requirements when
overvoltage protection is provided. The relay can be configured for
ac/dc or dc-only operation.
The LH1525 is packaged in a 6-pin, plastic DIP (LH1525AT) or in a
surface-mount gull wing (LH1525AAB). The LH1526 is packaged
in a 8-pin, plastic DIP (LH1526AB) or in a surface-mount gull wing
(LH1526AAC). Both devices are available in sticks or on tape
and reel.
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