L293D
L293DD
PUSH-PULL FOUR CHANNEL DRIVER WITH DIODES
600mA OUTPUT CURRENT CAPABILITY
PER CHANNEL
1.2A PEAK OUTPUT CURRENT (non repeti-
tive) PER CHANNEL
ENABLE FACI LITY
OVERTEMPERATURE PROTECTION
LOGICAL "0" INPUT VOLTAGE UP TO 1.5 V
(HIGH NOISE IM MUN ITY)
INTERNAL CLAMP DIODES
DESCRIPTION
The Device is a monolithic integrated high volt-
age, high current four channel driver designed to
accept standard DTL or TTL logic levels and drive
inductive loads (such as relays solenoides, DC
and stepping motors) and switching power tran-
sistors.
To simplify use as two bridges each pair of chan-
nels is equipped with an enable in put. A separate
supply input is provided for t he logic, allowing op-
eration at a lower voltage and internal clamp di-
odes are included.
This device is suitable for use in switching appli-
cations at frequencies up to 5 k Hz .
The L293D is assembled in a 16 lead plastic
packaage which has 4 center pins connected to-
gether and used for heatsinking
The L293DD is assembled in a 20 lead surface
mount which has 8 center pins connected to-
gether and used for heatsinking.
July 2003
®
BLOCK DIAGRAM
SO(12+4+4) Powerdip (12+2+2)
ORDERING NUMBERS:
L293DD L293D
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ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
VSSupply Voltage 36 V
VSS Logic Supply Volta ge 36 V
ViInput Voltage 7 V
Ven Enable Voltage 7 V
IoPeak Output Current (100 µs non repetitive) 1.2 A
Ptot Total Power Dissipation at Tpins = 90 °C4W
T
stg, TjStorage and Junction Temperature – 40 to 150 °C
THERMAL DATA
Symbol Decription DIP SO Unit
Rth j-pins Thermal Resistance Junction-pins max. – 14 °C/W
Rth j-amb Thermal Resistance junction-ambient max. 80 50 (*) °C/W
Rth j- case Thermal Resistance Junction-case max. 14 –
(* ) With 6sq. cm on board heats i nk.
PIN C ONNECTIONS (Top view)
SO(12+4+4) Powerdip(12+2+2)
L293D - L293DD
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ELECTRICAL CHARACTERISTICS (for each channel, VS = 24 V, VSS = 5 V, Tamb = 25 °C, unless
otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
VSSupply Voltage (pin 10) VSS 36 V
VSS Logic Supply Voltage (pin 20) 4.5 36 V
ISTotal Quiescent Supply Current
(pin 10) Vi = L ; IO = 0 ; Ven = H 2 6 mA
Vi = H ; IO = 0 ; Ven = H 16 2 4 m A
Ven = L 4 mA
ISS Total Quiescent Logic Supply
Current (pin 20) Vi = L ; IO = 0 ; Ven = H 44 60 mA
Vi = H ; IO = 0 ; Ven = H 16 22 mA
Ven = L 16 24 mA
VIL Input Low Voltage (pin 2, 9, 12,
19) – 0.3 1.5 V
VIH Input High Voltage (pin 2, 9,
12, 19) VSS ≤ 7 V 2.3 VSS V
VSS > 7 V 2.3 7 V
IIL Low Voltage Input Current (pin
2, 9, 12, 19) VIL = 1.5 V – 10 µA
IIH High Voltage Input Current (pin
2, 9, 12, 19) 2.3 V ≤ VIH ≤ VSS – 0.6 V 30 100 µA
Ven L Enable Low Voltage
(pin 1, 11) – 0.3 1.5 V
Ven H Enable High Voltage
(pin 1, 11) VSS ≤ 7 V 2.3 VSS V
VSS > 7 V 2.3 7 V
Ien L Low Voltage Enable Current
(pin 1, 11) Ven L = 1.5 V – 30 – 100 µA
Ien H High Voltage Enable Current
(pin 1, 11) 2.3 V ≤ Ven H ≤ VSS – 0.6 V ± 10 µA
VCE(sat)H Source Output Saturation
Voltage (pins 3, 8, 13, 18) IO = – 0.6 A 1.4 1.8 V
VCE(sat)L Sink Output Saturation Voltage
(pins 3, 8, 13, 18) IO = + 0.6 A 1.2 1.8 V
VFClamp Diode Forward Voltage IO = 600nA 1.3 V
trRise Time (*) 0.1 to 0.9 VO250 ns
tfFall Time (*) 0.9 to 0.1 VO250 ns
ton Turn-on Delay (*) 0.5 Vi to 0.5 VO750 ns
toff Turn-off Delay (*) 0.5 Vi to 0.5 VO200 ns
(*) See fig. 1.
L293D - L293DD
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TRUTH TABLE (one channel)
Input Enable (*) Output
H
L
H
L
H
H
L
L
H
L
Z
Z
Z = High output impedance
(*) Relative to the considered channel
Figure 1: Switching Times
Figure 2: Junction to ambient thermal resistance vs. area on board heatsink (SO12+4+4 package)
L293D - L293DD
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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
Powerdip 16
OUTLINE AND
MECHANICAL DATA
L293D - L293DD
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110
1120
A
e
B
D
E
L
KH
A1 C
SO20MEC
h x 45˚
SO20
DIM. mm inch
MIN. TYP. MAX. MIN. TYP. MAX.
A 2.35 2.65 0.093 0.104
A1 0.1 0.3 0.004 0.012
B 0.33 0.51 0.013 0.020
C 0.23 0.32 0.009 0.013
D 12.6 13 0.496 0.512
E 7.4 7.6 0.291 0.299
e 1.27 0.050
H 10 10.65 0.394 0.419
h 0.25 0.75 0.010 0.030
L 0.4 1.27 0.016 0.050
K 0˚ (min.)8˚ (max.)
OUTLINE AND
MECHANICAL DATA
L293D - L293DD
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Infor mation furni shed is bel ieved to be ac curate and reliabl e. Howev er, STMicroel ectr onics assum es no responsibility for the consequences
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grante d by implication or otherwise under any patent or patent rights of STMi croelectronics. Specification mentioned in this publication are
subj ect to change without notic e. This public ation supers edes and rep laces all informat ion p reviou sly suppli ed. STMicroel ectron ics pro ducts
are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
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L293D - L293DD
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