ULN2064B - ULN2066B
ULN2074B - ULN2076B
ULN2068B - ULN2070B
April 1993
50V - 1.5 A QUA D DARLINGT ON SWIT CHES
.OUTPUT CURRENT TO 1.5 A EACH DAR-
LINGTON
.MINIMUM BREAKDOWN 50 V
.SUSTAINING VOLTAGE AT LEAST 35 V
.INTEGRAL SUPPRESSION DIODES
(ULN2064B, ULN2066B, ULN2068B and
ULN2070B)
.ISOLATED DARLINGTON PINOUT
(U LN2074B , ULN2076B )
.VERSIONS COMPATIBLE WITH ALL POPU-
LAR LO GIC FAMILIES
POWERDIP
12 + 2 + 2
PIN CONNECTIONS AND ORDER CODES
ULN2064B
ULN2066B ULN2068B
ULN2070B ULN2074B
ULN2076B
DESCRIPTION
Des igned to int er fac e logi c t o a wide v ari et y of high
current, high voltage loads, these devices each con-
tain four NPN darlington switches delivering up to
1. 5 A wi th a spec ified m in im um br eakd own of 50 V
and a sustaining voltage of 35 V measured at 100
mA. The ULN2064B, ULN2066B, ULN2068B and
ULN2070B contain integral suppression diodes for
inductive loads have common emitters. The
ULN2074B and ULN2076B feature isolated dar-
lington pinouts and are intended for applications
such as emitter follower configurations. Inputs of 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
ULN2070B include a predriver stage to reduce load-
ing on th e c ontr ol lo gic .
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SCHEMATIC DIAGRAM
ULN2064B : RIN = 350Ω
ULN2066B : RIN = 3kΩULN2068B : RIN = 2.5kΩ, Rs = 900Ω
ULN2070B : RIN = 11.6kΩ, Rs = 3.4kΩUL N2074B : RIN = 350Ω
ULN2076B : RIN = 3kΩ
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 – 20 70B - 2074B - 2076 B
for ULN2064B – 20 68B 30
15 V
V
IIInput Current 25 m A
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 Ambien t T emperature Range – 20 to 85 °C
Tstg Storage Tem perature – 55 to 150 °C
ELECTRICAL CHARACTERISTICS (Tamb = 25oC unless other wise specified )
Symbol Parameter Test Conditions Min. Typ. Max. Unit Fig.
ICEX Output Leakage Current VCE = 50V
Tamb = 25°C
Tamb = 70°C100
500 µA
µA
1
VCE(sus) Collector-emitter Sustaining Voltage IC = 100mA, V i = 0.4V 35 V 2
VCE(sat) Collector-emitter Saturation Voltage IC = 5 00mA IB = 625µA
IC = 7 50mA IB = 935µA
IC = 1 A IB = 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 Curren t for ULN20 64B and ULN2074 B
Vi = 2.4V
Vi = 3.75V
for ULN2066B and UL N2076 B
Vi = 5V
Vi = 12V
for ULN2068B
Vi = 2.75V
Vi = 3.75V
for ULN2070B
Vi = 5V
Vi = 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 = 25oC unless other wise specified ) ( continued)
Symbol Parameter Test Conditions Min. Typ. Max. Unit Fig.
Vi(on) Input Voltage VCE = 2 V, IC = 1A
ULN2064B, UL N2074B
ULN2066B, UL N2076B
VCE = 2 V, IC = 1.5A
ULN2064B, UL N2074B
ULN2066B, UL N2076B
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 De lay T ime 0.5 Vi to 0 .5 Vo1µs
tPHL Turn-off Delay Time 0.5 Vi to 0 .5 Vo1.5 µs
IRClamp Diode Leakag e Current for ULN2064B-ULN2 066B
and ULN2068 B-ULN207 0B
VR = 50 V
Tamb = 25°C
Tamb = 70°C50
100 µA
µA
6
VFClamp Diode Forward Voltage for ULN2064B-ULN2 066B
and ULN2068 B-ULN207 0B
IF = 1 A
IF = 1.5 A 1.75
2V
V
7
No t es : 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 CIRCUI TS
Figure 1. Figure 2.
Figure 3. Figure 4.
ULN2064B-ULN2066B-ULN2068B-ULN2070B-ULN2074B-ULN2076B
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Figure 5. Figure 6.
Figure 7. Figure 8.
F ig ure 9 : In put Curr en t as a F u nc tion of
Input Volt age. Figure 10 : Input Cu rr en t as a F u nc ti on of
Input Voltage.
Figure 11 : Collec t or Cur r ent as a F unc tion of
Input Current.
ULN2064B-ULN2066B-ULN2068B-ULN2070B-ULN2074B-ULN2076B
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MOUNTING INSTRUCTIONS
T he R th j-amb can be red uc ed b y s old er ing the GND
pins to a suitable copper area of the printed circuit
boar d ( F ig. 12) or t o an ex ter nal heats ink (F ig. 13).
T he diagr am of Fig ure 14 shows the m axim um dis-
sipable power Ptot and the Rth j-amb as a fun cti on of
th e s ide "α" of two equ al s quar e c opp er ar eas hav-
ing a t hi ck ne s s of 35 µ (1.4 mils).
Durin g s older ing th e pi ns t em p er at ur e mus t not ex -
ceed 260 °C and the soldering time must not be
longer th an 12 se co nds .
The ex ter nal he at si nk o r pr int ed c ir cu it c op per are a
mus t be c onnec te d to electr ic al gro und.
F ig ure 12 : Example of P.C. Board Area which is
Used as Heatsink. Figure 13 : Exter na l Heat sink M ounting E x am ple.
F ig ure 14 : M ax imum Dis s ipabl e P ower an d Ju nc -
tion to Am bient T he rm a l Res istan c e
vs. Side "α".
Figure 15 : Max im u m Al lowabl e P ower D is si pa-
tion vs. Ambient Temperature.
ULN2064B-ULN2066B-ULN2068B-ULN2070B-ULN2074B-ULN2076B
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TYPICAL APPLICATIONS
F ig ure 16 : Common-anode LED Drivers. Figure 17 : Common-cathode LED Drivers.
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. N o lic ense i s granted by imp lication or otherw ise un der any pa tent or p atent right s of SGS- THOMSON M icroelec tronics . Speci fication
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 ex press wr itten a pproval of S GS-THOM SON Mic roelectronic s.
© 1996 SG S-THOMSON Mi croelect ronics – P rinted in Italy – All Right s Reser ved
SGS- THOMSON Mic roelectr onics GROUP OF COMPANIES
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ULN2064B-ULN2066B-ULN2068B-ULN2070B-ULN2074B-ULN2076B
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