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ULN2064B ,QUAD 1.5 A DARLINGTON SWITCHESULN2064B - ULN2066BULN2068B - ULN2070BULN2074B - ULN2076B50V - 1.5A QUAD DARLINGTON SWITCHES.OUTPUT ..
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ULN2067B ,80 VELECTRICAL CHARACTERISTICS (T = 25 C unless otherwise specified )ambSymbol Parameter Test Condition ..
ULN2068B ,50VULN2064B - ULN2066BULN2068B - ULN2070BULN2074B - ULN2076B50V - 1.5A QUAD DARLINGTON SWITCHES.OUTPUT ..
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ULN2064-ULN2070B
50V
ULN2064B- ULN2066B
ULN2074B- ULN2076BULN2068B- ULN2070BApril 1993
50V- 1.5A QUAD DARLINGTON SWITCHES OUTPUT CURRENT TO 1.5A EACH DAR-
LINGTON. MINIMUM BREAKDOWN50V. SUSTAINING VOLTAGEAT LEAST35V. INTEGRAL SUPPRESSION DIODES
(ULN2064B, ULN2066B, ULN2068B and
ULN2070B). ISOLATED DARLINGTON PINOUT
(ULN2074B,ULN2076B). VERSIONS COMPATIBLE WITH ALL POPU-
LAR LOGIC FAMILIES
POWERDIP+2+2
PIN CONNECTIONS AND ORDER CODESULN2064B
ULN2066B
ULN2068B
ULN2070B
ULN2074B
ULN2076B
DESCRIPTIONDesignedto interface logictoa wide varietyof high
current,highvoltageloads,thesedeviceseach con-
tain four NPN darlington switches deliveringupto
1.5A witha specifiedminimum breakdownof50V
anda sustaining voltageof35V measuredat 100
mA. The ULN2064B, ULN2066B, ULN2068B and
ULN2070B contain integral suppression diodesfor
inductive loads have common emitters. The
ULN2074B and ULN2076B feature isolated dar-
lington pinouts andare intendedfor applications
suchasemitterfollowerconfigurations.Inputsofthe
ULN2064B, ULN2068B and ULN2074Bare com-
patible with popular5V logic families and the
ULN2066B and ULN2076Bare compatible with6-V CMOS and PMOS. Types ULN2068B and
ULN2070Bincludea predriverstageto reduceload-
ingonthe control logic.
1/8
SCHEMATIC DIAGRAMULN2064B:RIN= 350Ω
ULN2066B:RIN =3kΩ
ULN2068B:RIN= 2.5kΩ,Rs= 900Ω
ULN2070B:RIN= 11.6kΩ,Rs= 3.4kΩ
ULN2074B:RIN= 350Ω
ULN2076B:RIN =3kΩ
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value UnitVCEX Output Voltage 50 V
VCE(sus) Output Sustaining Voltage 35 V Output Current 1.75 A Input Voltage for ULN2066B– 2070B- 2074B- 2076B
for ULN2064B– 2068B Input Current 25 mA Supply Voltage for ULN2068B
for ULN2070B
Ptot Power Dissipationat Tpins =90°C Tamb =70°C
Tamb Operating Ambient Temperature Range –20to85 °C
Tstg Storage Temperature –55to150 °C
ELECTRICAL CHARACTERISTICS (Tamb =25oC unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit Fig.ICEX Output Leakage Current VCE=50V
Tamb =25°C
Tamb =70°C
500 μA
VCE(sus) Collector-emitter Sustaining VoltageIC= 100mA,Vi= 0.4V 35 V 2
VCE(sat) Collector-emitter Saturation VoltageIC= 500mA IB= 625μA= 750mA IB= 935μA =1A IB= 1.25mA= 1.25A IB= 2mA
Ii(on) Input Current for ULN2064Band ULN2074B= 2.4V= 3.75V
for ULN2066Band ULN2076B =5V=12V
for ULN2068B= 2.75V= 3.75V
for ULN2070B =5V=12V
ULN2064B-ULN2066B-ULN2068B-ULN2070B-ULN2074B-ULN2076B
2/8
ELECTRICAL CHARACTERISTICS (Tamb =25oC unless otherwise specified) (continued)
Symbol Parameter Test Conditions Min. Typ. Max. Unit Fig.Vi(on) Input Voltage VCE=2V,IC =1A
ULN2064B, ULN2074B
ULN2066B, ULN2076B
VCE=2V,IC= 1.5A
ULN2064B, ULN2074B
ULN2066B, ULN2076B
ULN2068B
ULN2070B
2.75 Supply Current for ULN2068B= 500mA,Vi= 2.75V
for ULN2070B= 500mA,Vi =5V
tPLH Turn-on Delay Time 0.5Vito0.5Vo 1 μs
tPHL Turn-off Delay Time 0.5Vito0.5Vo 1.5 μs Clamp Diode Leakage Current for ULN2064B-ULN2066B
and ULN2068B-ULN2070B =50V
Tamb =25°C
Tamb =70°C
100 μA Clamp Diode Forward Voltage for ULN2064B-ULN2066B
and ULN2068B-ULN2070B=1A=1.5A
Notes:1. Input voltageiswith referencetothe substrate(no connectiontoany other pins)forthe ULN2074Band ULN2076B
referenceis groundforall other types. Input currentmaybe limitedby maximum allowable input voltage.
TEST CIRCUITS
Figure1. Figure2.
Figure3. Figure4.
ULN2064B-ULN2066B-ULN2068B-ULN2070B-ULN2074B-ULN2076B3/8
Figure5. Figure6.
Figure7. Figure8.
Figure9: Input Currentasa Functionof
Input Voltage.
Figure10: InputCurrentasa Functionof
Input Voltage.
Figure11: CollectorCurrentasa Functionof
InputCurrent.
ULN2064B-ULN2066B-ULN2068B-ULN2070B-ULN2074B-ULN2076B4/8
MOUNTING INSTRUCTIONSTheRth j-amb canbe reducedby solderingthe GND
pinstoa suitable copper areaofthe printed circuit
board (Fig.12)ortoan external heatsink (Fig. 13).
The diagramof Figure14 showsthe maximumdis-
sipable powerPtot andtheRth j-ambasa functionof
the side”α”oftwo equalsquare copper areashav-
inga thicknessof35μ (1.4mils).
During solderingthe pins temperaturemustnotex-
ceed 260°C andthe soldering time mustnotbe
longerthan12 seconds.
The externalheatsinkor printed circuit copper area
mustbe connectedto electrical ground.
Figure12: Exampleof P.C. Board Area whichis
Usedas Heatsink.
Figure13: ExternalHeatsink Mounting Example.
Figure14: Maximum Dissipable Power and Junc-
tionto Ambient Thermal Resistance
vs. Side ”α”.
Figure15: Maximum Allowable Power Dissipa-
tionvs. Ambient Temperature.
ULN2064B-ULN2066B-ULN2068B-ULN2070B-ULN2074B-ULN2076B5/8
TYPICAL APPLICATIONS
Figure16: Common-anodeLED Drivers.
Figure17: Common-cathode LED Drivers.
ULN2064B-ULN2066B-ULN2068B-ULN2070B-ULN2074B-ULN2076B6/8
