Device Operating
Temperature Range Package

SEMICONDUCTOR
TECHNICAL DATA
QUAD 1.5 A
DARLINGTON SWITCH
ORDERING INFORMATION*
ULN2068B TA = 0 to +70°C Plastic DIP
B SUFFIX
PLASTIC PACKAGE
CASE 648C
PIN CONNECTIONS
Order this document by ULN2068/D
K
C
B
Gnd
Gnd
VS
B
C
C
NC
B
Gnd
Gnd
B
C
K 1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
*Other options of this ULN2060/2070 series are available
*for volume applications. Contact your local Motorola Sales
*Representative.
1
MOTOROLA ANALOG IC DEVICE DATA
   
 
The ULN2068B is a high–voltage, high–current quad Darlington switch
array designed for high current loads, both resistive and r eactive, up to 300 W .
It is intended for interfacing between low level (TTL, DTL, LS and 5.0 V
CMOS) logic families and peripheral loads such as relays, solenoids, dc and
stepping motors, multiplexer LED and incandescent displays, heaters, or other
high voltage, high current loads.
The Motorola U LN2068B is specified with minimum guaranteed breakdown
of 50 V and is 100% tested for safe area using an inductive load. It includes
integral transient suppression diodes. Use of a predriver stage reduces input
current while still allowing the device to switch 1.5 Amps.
It is supplied in an improved 16–Pin plastic DIP package with heat sink
contact tabs (Pins 4, 5, 12 and 13). A copper alloy lead frame allows maximum
power dissipation using standard cooling techniques. The use of the contact
tab lead frame facilitates attachment of a DIP heat sink while permitting the
use of standard layout and mounting practices.
TTL, DTL, LS, CMOS Compatible Inputs
1.5 A Maximum Output Current
Low Input Current
Internal Freewheeling Clamp Diodes
100% Inductive Load Tested
Heat Tab Copper Alloy Lead Frame for Increased Dissipation
MAXIMUM RATINGS (TA = 25°C and ratings apply to any one device in the
package, unless otherwise noted)
Rating Symbol Value Unit
Output Voltage VO50 V
Input Voltage (Note 1) VI15 V
Supply Voltage VS10 V
Collector Current (Note 2) IC1.75 A
Input Current (Note 3) II25 mA
Operating Ambient Temperature Range TA0 to +70 °C
Storage Temperature Range Tstg –55 to +150 °C
Junction Temperature TJ150 °C
NOTES: 1.Input voltage referenced to ground.
2.Allowable output conditions shown in Figures 11 and 12.
3.May be limited by max input voltage.
Partial Schematic
C
3.0 k
7.2 k
RS
0.9 k
BRin
2.5 k
VS
K
Motorola, Inc. 1995
ULN2068
2MOTOROLA ANALOG IC DEVICE DATA
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted.)
Characteristic Symbol Min Typ Max Unit
Output Leakage Current (Figure 1)
(VCE = 50 V)
(VCE = 50 V, TA = 70°C)
ICEX
100
500
µA
Collector–Emitter Saturation Voltage (Figure 2)
(IC = 500 mA
(IC = 750 mA
(IC = 1.0 A
(IC = 1.25 A
Vin = 2.4 V)
VCE(sat)
1.13
1.25
1.40
1.60
V
Input Current – On Condition (Figure 4)
(VI = 2.4 V)
(VI = 3.75 V)
II(on)
0.25
1.0
mA
Input Voltage – On Condition (Figure 5)
(VCE = 2.0 V, IC = 1.5 A) VI(on) 2.4 V
Inductive Load Test (Figure 3)
(VS = 5.5 V, VCC = 24.5 V,
tPW = 4.0 ms)
Vout 100 mV
Supply Current (Figure 8)
(IC = 500 mA, Vin = 2.4 V, VS = 5.5 V) IS 6.0 mA
Turn–On Delay Time
(50% EI to 50% EO)tPHL 1.0 µs
Turn–Off Delay Time
(50% EI to 50% EO)tPLH 4.0 µs
Clamp Diode Leakage Current (Figure 6)
(VR = 50 V)
(VR = 50 V, TA = 70°C)
IR
50
100
µA
Clamp Diode Forward Voltage (Figure 7)
(IF = 1.0 A)
(IF = 1.5 A)
VF
1.75
2.0
V
TEST FIGURES
9
70 MH
20
VCC
VS
tPW
IC
Iin
Vout = Vout1 – V out2
VCE
Open
µ
A
Open ICEX
0
DUT
14 ms
5.0
V
Vin
Open
VCE
DUT
Vin DUT DUT
mA Open
Vin
Open
Vout1Vout2
Figure 1. Figure 2.
Figure 3. Figure 4.
ULN2068
3
MOTOROLA ANALOG IC DEVICE DATA
Vin, INPUT VOLTAGE (V)
VS = 5.0 V
TA = 25
°
C
0 1.0 2.0 3.0 4.0
IS
II, INPUT CURRENT (mA)
4
2
3
1.0
10040
5.0
0
Device Limit
Number of
outputs conducting
simultaneously
DUTY CYCLE (%)
1
0 20 60 80
0.5
1.5
TYPICAL CHARACTERISTIC CURVES – TA = 25°C
TEST FIGURES (continued)
Figure 5.
IC
VCE
Open
µ
A
DUT
V
Vin Open
V
DUT
Open
IF
V
VF
IR
mA
VR
Vin
DUT
DUT
Open
VS
IC
I , INPUT CURRENT (A)
I
I , COLLECTOR CURRENT (A)
C
VS = 5.0 V
TA = 25
°
C
0 1.0 2.0 3.0 4.0
0
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
Device Limit
4
2
3
1
0
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
1.0
0
0.5
1.5
10040
DUTY CYCLE (%)
0 20 60 80
I , ALLOWABLE PEAK
COLLECTOR CURRENT (A)
C
I , ALLOWABLE PEAK
COLLECTOR CURRENT (A)
C
Number of
outputs conducting
simultaneously
Figure 6.
Figure 7.
Figure 8.
Figure 9. Input Current
versus Input Voltage Figure 10. Collector Current
versus Input Current
Figure 11. TA = 70°C w/o Heat Sink Figure 12. TA = 70°C w/Staver V–8
Heat Sink (37.5°C/W)
ULN2068
4MOTOROLA ANALOG IC DEVICE DATA
3
4
21
Device Limit
Number of
outputs conducting
simultaneously
100806040200
0
0.5
1.0
1.5
DUTY CYCLE (%)
I , ALLOWABLE PEAK
COLLECTOR CURRENT (A)
C
Number of
outputs conducting
simultaneously
Device Limit
Device Limit
Device Limit
I , ALLOWABLE PEAK
COLLECTOR CURRENT (A)
C
I , ALLOWABLE PEAK
COLLECTOR CURRENT (A)
C
I , ALLOWABLE PEAK
COLLECTOR CURRENT (A)
C
100806040200
100806040200100806040200
0
0.5
1.0
1.5
0
0.5
1.0
1.5
0
0.5
1.0
1.5
DUTY CYCLE (%)
DUTY CYCLE (%)DUTY CYCLE (%)
3
4
213
4
21
3
4
2
1
Number of
outputs conducting
simultaneously
Number of
outputs conducting
simultaneously
Figure 13. TA = 70°C w/Staver V–7
Heat Sink (27.5°C/W) Figure 14. TA = 50°C w/o Heat Sink
Figure 15. TA = 50°C w/Staver V–8
Heat Sink (37.5°C/W) Figure 16. TA = 50°C w/Staver V–7
Heat Sink (27.5°C/W)
ULN2068
5
MOTOROLA ANALOG IC DEVICE DATA
OUTLINE DIMENSIONS
DIM MIN MAX MIN MAX
MILLIMETERSINCHES
A0.740 0.840 18.80 21.34
B0.240 0.260 6.10 6.60
C0.145 0.185 3.69 4.69
D0.015 0.021 0.38 0.53
E0.050 BSC 1.27 BSC
F0.040 0.70 1.02 1.78
G0.100 BSC 2.54 BSC
J0.008 0.015 0.20 0.38
K0.115 0.135 2.92 3.43
L0.300 BSC 7.62 BSC
M0 10 0 10
N0.015 0.040 0.39 1.01
____
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION L TO CENTER OF LEADS WHEN
FORMED PARALLEL.
4. DIMENSION B DOES NOT INCLUDE MOLD FLASH.
5. INTERNAL LEAD CONNECTION BETWEEN 4 AND
5, 12 AND 13.
–A–
–B–
16 9
1 8
F
DGE
N
C
NOTE 5
16 PL
S
A
M
0.13 (0.005) T
–T–
SEATING
PLANE
S
B
M
0.13 (0.005) T
J16 PL
M
L
B SUFFIX
PLASTIC PACKAGE
CASE 648C–03
ISSUE C
ULN2068
6MOTOROLA ANALOG IC DEVICE DATA
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ULN2068/D
*ULN2068/D*