ULN2064B - ULN2066B
ULN2074B - ULN2076B
ULN2068B - ULN2070B
April 1993
50V- 1.5A QUAD DARLINGTON SWITCHES
.OUTPUT CURRENT TO 1.5 A EACH DAR-
LINGTON
.MINIMUMBREAKDOWN50 V
.SUSTAININGVOLTAGEATLEAST35 V
.INTEGRAL SUPPRESSION DIODES
(ULN2064B, ULN2066B, ULN2068B and
ULN2070B)
.ISOLATED DARLINGTON PINOUT
(ULN2074B,ULN2076B)
.VERSIONS COMPATIBLE WITH ALL POPU-
LARLOGICFAMILIES
POWERDIP
12 + 2 + 2
PIN CONNECTIONS AND ORDER CODES
ULN2064B
ULN2066B ULN2068B
ULN2070B ULN2074B
ULN2076B
DESCRIPTION
Designedto interfacelogicto a wide varietyof high
current,highvoltageloads,thesedeviceseachcon-
tain four NPN darlington switches delivering up to
1.5 A with a specifiedminimum breakdownof 50 V
and a sustaining voltage of 35 V measuredat 100
mA. The ULN2064B, ULN2066B, ULN2068B and
ULN2070B contain integral suppressiondiodesfor
inductive loads have common emitters. The
ULN2074B and ULN2076B feature isolated dar-
lington pinouts and are intended for applications
suchasemitterfollowerconfigurations.Inputsof the
ULN2064B, ULN2068B and ULN2074B are com-
patible with popular 5 V logic families and the
ULN2066B and ULN2076B are compatible with 6-
15 V CMOS and PMOS. Types ULN2068B and
ULN2070Bincludeapredriverstagetoreduceload-
ing on the controllogic.
1/8
SCHEMATIC DIAGRAM
ULN2064B : RIN = 350Ω
ULN2066B : RIN =3k
ΩULN2068B : RIN = 2.5kΩ,R
s= 900Ω
ULN2070B : RIN = 11.6kΩ,R
s= 3.4kΩULN2074B: RIN = 350Ω
ULN2076B : RIN =3k
Ω
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
VCEX Output Voltage 50 V
VCE(sus) Output Sustaining Voltage 35 V
IOOutput Current 1.75 A
ViInput Voltage for ULN2066B – 2070B - 2074B - 2076B
for ULN2064B – 2068B 30
15 V
V
IIInput Current 25 mA
VsSupply Voltage for ULN2068B
for ULN2070B 10
20 V
V
Ptot Power Dissipation at Tpins =90°C
at Tamb =70°C4.3
1W
W
Tamb Operating Ambient Temperature Range – 20 to 85 °C
Tstg Storage Temperature – 55 to 150 °C
ELECTRICAL CHARACTERISTICS (Tamb =25
o
C unless otherwise specified )
Symbol Parameter Test Conditions Min. Typ. Max. Unit Fig.
ICEX Output Leakage Current VCE = 50V
Tamb =25°C
T
amb =70°C100
500 µA
µA
1
VCE(sus) Collector-emitter Sustaining Voltage IC= 100mA, Vi= 0.4V 35 V 2
VCE(sat) Collector-emitter Saturation Voltage IC= 500mA IB= 625µA
IC= 750mA IB= 935µA
IC=1A I
B= 1.25mA
IC= 1.25A IB= 2mA
1.1
1.2
1.3
1.4
V
V
V
V
3
3
3
3
Ii(on) Input Current for ULN2064B and ULN2074B
Vi= 2.4V
Vi= 3.75V
for ULN2066B and ULN2076B
Vi=5V
V
i= 12V
for ULN2068B
Vi= 2.75V
Vi= 3.75V
for ULN2070B
Vi=5V
V
i= 12V
1.4
3.3
0.6
1.7
4.3
9.6
1.8
5.2
0.55
1.0
0.4
1.25
mA
mA
mA
mA
mA
mA
mA
mA
4
4
4
4
4
4
4
4
ULN2064B-ULN2066B-ULN2068B-ULN2070B-ULN2074B-ULN2076B
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ELECTRICAL CHARACTERISTICS (Tamb =25
o
C 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
6.5
2.5
10
2.75
5
V
V
V
V
V
V
5
5
5
5
5
5
IsSupply Current for ULN2068B
IC= 500mA, Vi= 2.75V
for ULN2070B
IC= 500mA, Vi=5V
6
4.5
mA
mA
8
8
tPLH Turn-on Delay Time 0.5 Vito 0.5 Vo1µs
tPHL Turn-off Delay Time 0.5 Vito 0.5 Vo1.5 µs
IRClamp Diode Leakage Current for ULN2064B-ULN2066B
and ULN2068B-ULN2070B
VR=50V
T
amb =25°C
T
amb =70°C50
100 µA
µA
6
VFClamp Diode Forward Voltage for ULN2064B-ULN2066B
and ULN2068B-ULN2070B
IF=1A
I
F= 1.5 A 1.75
2V
V
7
Notes : 1. Input voltage is with reference to the substrate (no connection to any other pins) for the ULN2074B and ULN2076B
reference is ground for all other types.
2. Input current may be limited by maximum allowable input voltage.
TEST CIRCUITS
Figure 1. Figure2.
Figure 3. Figure4.
ULN2064B-ULN2066B-ULN2068B-ULN2070B-ULN2074B-ULN2076B
3/8
Figure 5. Figure6.
Figure 7. Figure8.
Figure 9 : InputCurrent as a Functionof
InputVoltage. Figure 10 : InputCurrent as a Functionof
InputVoltage.
Figure 11 : CollectorCurrent as a Functionof
InputCurrent.
ULN2064B-ULN2066B-ULN2068B-ULN2070B-ULN2074B-ULN2076B
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MOUNTING INSTRUCTIONS
The Rth j-amb can be reducedby soldering the GND
pins to a suitable copper area of the printed circuit
board(Fig. 12) or to an externalheatsink(Fig. 13).
The diagramof Figure 14 showsthemaximum dis-
sipable powerPtot andthe Rth j-amb asa functionof
theside ”α” oftwo equalsquarecopperareashav-
inga thicknessof 35 µ(1.4mils).
During solderingthe pins temperaturemust notex-
ceed 260 °C and the soldering time must not be
longerthan 12 seconds.
The externalheatsinkor printedcircuit copperarea
mustbe connectedto electricalground.
Figure 12 : Example of P.C. BoardArea which is
Usedas Heatsink. Figure 13 : ExternalHeatsinkMounting Example.
Figure 14 : MaximumDissipable Powerand Junc-
tionto AmbientThermalResistance
vs.Side ”α”.
Figure 15 : MaximumAllowable PowerDissipa-
tionvs. Ambient Temperature.
ULN2064B-ULN2066B-ULN2068B-ULN2070B-ULN2074B-ULN2076B
5/8
TYPICAL APPLICATIONS
Figure 16 : Common-anodeLEDDrivers. Figure17 : Common-cathodeLEDDrivers.
ULN2064B-ULN2066B-ULN2068B-ULN2070B-ULN2074B-ULN2076B
6/8
POWERDIP 16 PACKAGE MECHANICAL DATA
DIM. mm inch
MIN. TYP. MAX. MIN. TYP. MAX.
a1 0.51 0.020
B 0.85 1.40 0.033 0.055
b 0.50 0.020
b1 0.38 0.50 0.015 0.020
D 20.0 0.787
E 8.80 0.346
e 2.54 0.100
e3 17.78 0.700
F 7.10 0.280
I 5.10 0.201
L 3.30 0.130
Z 1.27 0.050
ULN2064B-ULN2066B-ULN2068B-ULN2070B-ULN2074B-ULN2076B
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Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for
the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its
use. No licenseis granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specification
mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously
supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems
without express written approval of SGS-THOMSON Microelectronics.
1996 SGS-THOMSON Microelectronics – Printed in Italy – All Rights Reserved
SGS-THOMSON Microelectronics GROUP OF COMPANIES
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ULN2064B-ULN2066B-ULN2068B-ULN2070B-ULN2074B-ULN2076B
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