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
PowerDIP-16
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
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
Package
PowerDIP-16
PowerDIP-16
PowerDIP-16
PowerDIP-16
January 2009
Rev 2
1/14
www.st.com
14
Contents
ULN2064B, ULN2066B, ULN2068B, ULN2074B
Contents
1
2
3
4
5
6
7
8
9
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
Diagram
1
Figure 1.
Diagram
Schematic diagrams
ULN2064B: R
IN
= 350Ω
ULN2066B: R
IN
= 3kΩ
ULN2068B: R
IN
= 2.5kΩ, R
S
= 900Ω
ULN2074B: R
IN
= 350Ω
3/14
Pin configuration
ULN2064B, ULN2066B, ULN2068B, ULN2074B
2
Figure 2.
Pin configuration
Pin connections (top view)
ULN2064B
ULN2066B
ULN2068B
ULN2074B
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ULN2064B, ULN2066B, ULN2068B, ULN2074B
Maximum ratings
3
Table 2.
Maximum ratings
Absolute maximum ratings
Parameter
Output voltage
Output sustaining voltage
Output current
Input voltage ULN2066B - 2074B
V
I
I
I
V
S
P
TOT
T
AMB
T
STG
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
Value
50
35
1.75
30
V
15
25
10
4.3
W
1
- 20 to 85
- 55 to 150
°C
°C
mA
V
Unit
V
V
A
Symbol
V
CEX
V
CE(SUS)
I
O
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嵌入式系统
