ULN2064B, ULN2066B
ULN2068B, ULN2074B
50 V - 1.5 A quad Darlington switches
Features
■
■
■
■
■
■
Output current to 1.5 A for each Darlington
Minimum breakdown 50 V
Sustaining voltage at least 35 V
Integral suppression diodes (ULN2064B,
ULN2066B and ULN2068B
Isolated Darlington pinout (ULN2074B)
Versions compatible with all popular logic families
Description
Designed to interface logic to a wide variety of high current, high voltage loads, these devices each contain four NPN Darlington switches delivering up to 1.5 A with a specified minimum breakdown of 50 V and a sustaining voltage of 35
V measured at 100 mA. The ULN2064B,
ULN2066B and ULN2068B contain integral suppression diodes for inductive loads have common emitters. The ULN2074B feature isolated Darlington pinouts and is intended for
PowerDIP-16 applications such as emitter follower configurations. Inputs of the ULN2064B,
ULN2068B and ULN2074B are compatible with popular 5 V logic families and the ULN2066B are compatible with 6 - 15 V CMOS and PMOS. Type
ULN2068B includes a pre-driver stage to reduce loading on the control logic.
Table 1.
Device summary
Part numbers
ULN2064B
ULN2066B
ULN2068B
ULN2074B
January 2009 Rev 2
Package
PowerDIP-16
PowerDIP-16
PowerDIP-16
PowerDIP-16
1/14 www.st.com
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7
8
5
6
9
3
4
1
2
Contents
Contents
ULN2064B, ULN2066B, ULN2068B, ULN2074B
Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Mounting instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Typical applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
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ULN2064B, ULN2066B, ULN2068B, ULN2074B
1 Diagram
Figure 1.
Schematic diagrams
ULN2064B: R
IN
= 350 Ω
ULN2066B: R
IN
= 3k
Ω
ULN2068B: R
IN
= 2.5k
Ω, R
S
= 900
Ω
ULN2074B: R
IN
= 350 Ω
Diagram
3/14
Pin configuration
2 Pin configuration
Figure 2.
Pin connections (top view)
ULN2064B, ULN2066B, ULN2068B, ULN2074B
ULN2064B
ULN2066B
ULN2068B ULN2074B
4/14
ULN2064B, ULN2066B, ULN2068B, ULN2074B
3 Maximum
Table 2.
Symbol
Absolute maximum ratings
Parameter
V
CEX
V
CE(SUS)
I
O
V
I
I
I
V
S
P
TOT
T
AMB
T
STG
Output voltage
Output sustaining voltage
Output current
Input voltage ULN2066B - 2074B
Input voltage ULN2064B - 2068B
Input current
Supply voltage for ULN2068B
Power dissipation at T
PINS
= 90 °C
Power dissipation at T
AMB
= 70 °C
Operating ambient temperature range
Storage temperature
Maximum ratings
Value
50
35
1.75
30
15
25
10
4.3
1
- 20 to 85
- 55 to 150
Unit
V
V
A
V mA
V
W
°C
°C
5/14
Electrical characteristics ULN2064B, ULN2066B, ULN2068B, ULN2074B
Table 3.
Symbol
I
CEX
Electrical characteristics (T
A
= 25 °C unless otherwise specified).
Parameter Test condition Min.
Typ.
Max.
Unit
Output leakage current
( Figure 5 )
V
CE
= 50V, T
A
= 25°C
V
CE
= 50V, T
A
= 70°C
100
500
µA
V
CE(SUS)
Collector-emitter sustaining voltage (
Figure 4
)
I
C
= 100mA, V
I
= 0.4V
35 V
V
CE(SAT)
Collector-emitter saturation voltage (
Figure 5
)
I
I(ON)
V
I(ON)
I
S t
PLH t
PHL
I
R
V
F
Input current (
Figure 6 )
Input voltage (
Figure 7
)
Supply current (
Figure 10 )
Turn-on delay time
Turn-off delay time
Clamp diode leakage current
( Figure 8 )
Clamp diode forward voltage
( Figure 9 )
I
C
= 500mA, I
B
= 325µA
I
C
= 750mA, I
B
= 935µA
I
C
= 1A, I
B
= 1.25mA
I
C
= 1.25A, I
B
= 2mA for ULN2064B and ULN2074B
V
I
= 2.4V
V
I
= 3.75V
for ULN2066B,
V
I
= 5V
V
I
= 12V for ULN2068B,
V
I
= 2.75V
V
I
= 3.75V
V
CE
= 2V, I
C
= 1A
ULN2064B, ULN2074B,
ULN2066B
V
CE
= 2V, I
C
= 1.5A
ULN2064B, ULN2074B,
ULN2066B
ULN2068B for ULN2068B, V
I
= 2.75V,
I
C
= 500mA
0.5 V
I to 0.5V
O
0.5 V
I to 0.5V
O
For ULN2064B - ULN2066B -
ULN2068B, V
R
= 50V
T
A
= 25°C
T
A
= 70°C
For ULN2064B - ULN2066B -
ULN2068B
I
F
= 1A
I
F
= 1.5A
1.4
3.3
0.6
1.7
1.1
1.2
1.3
1.4
4.3
9.6
1.8
5.2
0.55
1.0
2
6.5
2.5
10
2.75
6
1
1.5
50
100
1.75
2
V mA
V mA
µs
µs
µA
V
Note: Input voltage is with reference to the substrate (no connection to any other pins) for the
ULN2074B reference is ground for all other types.
Note: 1 Input current may be limited by maximum allowable input voltage.
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ULN2064B, ULN2066B, ULN2068B, ULN2074B
Figure 3.
Output leakage current
Test circuits
Figure 4.
Collector-emitter sustaining voltage
Figure 5.
Collector-emitter saturation voltage Figure 6.
Input current (ON)
Figure 7.
Input voltage Figure 8.
Clamp diode leakage current
7/14
Test circuits
Figure 9.
Clamp diode forward voltage
ULN2064B, ULN2066B, ULN2068B, ULN2074B
Figure 10.
Supply current
Figure 11.
Input current as a function of input voltage
Figure 12.
Input current as a function of input voltage
Figure 13.
Collector current as a function of input current
8/14
ULN2064B, ULN2066B, ULN2068B, ULN2074B Mounting instructions
The R thJA
can be reduced by soldering the GND pins to a suitable copper area of the printed
circuit board ( Figure 14 ) or to an external heatsink ( Figure 15 ).
The diagram of Figure 16 shows the maximum dissipated power P
TOT
and the R thJA
as a function of the side " α" of two equal square copper areas having a thickness of 35 µ (1.4 mils).
During soldering the pins temperature must not exceed 260 °C and the soldering time must not be longer than 12 seconds.
The external heatsink or printed circuit copper area must be connected to electrical ground.
Figure 14.
Example of P.C. board area which is used as heatsink
Figure 15.
External heatsink mounting example
Figure 16.
Maximum dissipated power and junction to ambient thermal resistance vs. side "
α"
Figure 17.
Maximum allowable power dissipation vs. ambient temperature
9/14
Typical applications
Figure 18.
Common-anode LED drivers
ULN2064B, ULN2066B, ULN2068B, ULN2074B
Figure 19.
Common-cathode LED drivers
10/14
ULN2064B, ULN2066B, ULN2068B, ULN2074B
8 Package mechanical data
Package mechanical data
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
11/14
Package mechanical data
F
I e e3
D
E b b1
Dim.
mm inch.
Min.
Typ.
Max.
Min.
Typ.
Max.
a1
B
0.51
0.85
1.40
0.020
0.033
0.055
0.50
0.020
0.38
0.50
20.0
0.015
0.020
0.787
8.80
2.54
17.78
0.346
0.100
0.700
7.10
5.10
0.280
0.201
L
Z
3.30
1.27
0.130
0.050
ULN2064B, ULN2066B, ULN2068B, ULN2074B
OUTLINE AND
MECHANICAL DATA
PowerDIP-16
12/14
ULN2064B, ULN2066B, ULN2068B, ULN2074B
9 Revision history
Table 4.
Date
Document revision history
Revision
12-Sep-2003
22-Jan-2009
1
2
First release
Modified
Table 1 on page 1
.
Changes
Revision history
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ULN2064B, ULN2066B, ULN2068B, ULN2074B
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