L293D
QUADRUPLE HALF-H DRIVER
SLRS008A – SEPTEMBER 1986 – REVISED MAY 1990
Copyright 1990, Texas Instruments Incorporated
3–1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
600-mA Output Current Capability Per
Driver
Pulsed Current 1.2-A Per Driver
Output Clamp Diodes for Inductive
Transient Suppression
Wide Supply Voltage Range
4.5 V to 36 V
Separate Input-Logic Supply
Thermal Shutdown
Internal ESD Protection
High-Noise-Immunity Inputs
Functional Replacement for SGS L293D
description
The L293D is a quadruple high-current half-H
driver designed to provide bidirectional drive
currents of up to 600-mA at voltages from 4.5 V to
36 V . It is designed to drive inductive loads such as
relays, solenoids, dc and bipolar stepping motors,
as well as other high-current/high-voltage loads in
positive-supply applications.
All inputs are TTL-compatible. Each output is a
complete totem-pole drive circuit with a Darlington
transistor sink and a pseudo-Darlington source.
Drivers are enabled in pairs with drivers 1 and 2
enabled by 1,2EN and drivers 3 and 4 enabled by
3,4EN. When an enable input is high, the
associated drivers are enabled, and their outputs
are active and in phase with their inputs. External
high-speed output clamp diodes should be used
for inductive transient suppression. When the
enable input is low, those drivers are disabled, and
their outputs are off and in a high-impedance
state. With the proper data inputs, each pair of
drivers form a full-H (or bridge) reversible drive
suitable for solenoid or motor applications.
A VCC1 terminal, separate from VCC2, is provided
for the logic inputs to minimize device power
dissipation.
The L293D is designed for operation from 0°C
to 70°C.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1,2EN
1A
1Y
2Y
2A
VCC2
VCC1
4A
4Y
3Y
3A
3,4EN
NE PACKAGE
(TOP VIEW)
HEAT SINK AND
GROUND
HEAT SINK AND
GROUND
logic symbol
4A
3,4EN
3A
2A
1,2EN
1A
15
9
10
7
1
2
4Y
3Y
2Y
1Y
14
11
6
3
EN
EN
EN
EN
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
logic diagram
4A
3,4EN
3A
2A
1,2EN
1A
15
9
10
7
1
2
4Y
3Y
2Y
1Y
14
11
6
3
INPUTSOUTPUT
Y
FUNCTION TABLE
(each driver)
AEN
H
L
X
H
H
L
H
L
Z
H = high-level, L = low level,
X = irrelevant, Z = high-impedance (off)
In the thermal shutdown mode, the
output is in the high-impedance state
regardless of the input levels.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
L293D
QUADRUPLE HALF-H DRIVER
SLRS008A – SEPTEMBER 1986 – REVISED MAY 1990
3–2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265
schematics of inputs and outputs
Input
VCC2
Output
GND
TYPICAL OF ALL OUTPUTS
EQUIVALENT OF EACH INPUT
VCC1
Current
Source
GND
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Logic supply voltage range, VCC1 (see Note 1) 36 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output supply voltage range, VCC2 36 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, VI 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range, VO 3 V to VCC2 + 3 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Peak output current (nonrepetitive, t 100 µs) ±1.2 A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous output current, IO ±600 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total dissipation at (or below) 25°C free-air temperature (see Notes 2 and 3) 2075 mW. . . . . . .
Continuous total dissipation at 80°C case temperature (see Note 3) 5000 mW. . . . . . . . . . . . . . . . . . . . . . . . .
Operating case or virtual junction temperature range, TJ –40°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg –65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NOTES: 1. All voltage values are with respect to the network ground terminal.
2. For operation above 25°C free-air temperature, derate linearly at the rate of 16.6 mW/°C.
3. For operation above 25°C case temperature, derate linearly at the rate of 71.4 mW/°C. Due to variations in individual device electrical
characteristics and thermal resistance, the built-in thermal overload protection may be activated at power levels slightly above or
below the rated dissipation.
recommended operating conditions
MIN MAX UNIT
Logic supply voltage, VCC1 4.5 7 V
Output supply voltage, VCC2 VCC1 36 V
High level in
p
ut voltage VIH
VCC1 7 V 2.3 VCC1
V
High
-
le
v
el
inp
u
t
v
oltage
,
V
IH VCC1 7 V 2.3 7
V
Low-level input voltage, VIL 0.31.5 V
Operating free-air temperature, TA0 70 °C
The algebraic convention, in which the least positive (most negative) value is designated minimum, is used in this data sheet for logic voltage
levels.
L293D
QUADRUPLE HALF-H DRIVER
SLRS008A – SEPTEMBER 1986 – REVISED MAY 1990
3–3
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
electrical characteristics, VCC1 = 5 V, VCC2 = 24 V, TA = 25°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VOH High-level output voltage IOH = –0.6 A VCC21.8 VCC21.4 V
VOL Low-level output voltage IOL = 0.6 A 1.2 1.8 V
VOKH High-level output clamp voltage IOK = –0.6 A VCC2+1.3 V
VOKL Low-level output clamp voltage IOK = –0.6 A 1.3 V
IIH
High level in
p
ut current
A
VI=7V
0.2 100
µA
I
IH
High
-
le
v
el
inp
u
t
c
u
rrent
EN
V
I =
7
V
0.2 ±10 µ
A
IIL
Low level in
p
ut current
A
VI=0
–3 –10
µA
I
IL
Lo
w-
le
v
el
inp
u
t
c
u
rrent
EN
V
I =
0
–2 100 µ
A
All outputs at high level 13 22
ICC1 Logic supply current IO = 0 All outputs at low level 35 60 mA
All outputs at high impedance 8 24
All outputs at high level 14 24
ICC2 Output supply current IO = 0 All outputs at low level 2 6 mA
All outputs at high impedance 2 4
switching characteristics, VCC1 = 5 V, VCC2 = 24 V, TA = 25°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
tPLH Propagation delay time, low-to-high-level output from A input 800 ns
tPHL Propagation delay time, high-to-low-level output from A input
CL=30
p
F See Figure 1
400 ns
tTLH T ransition time, low-to-high-level output
C
L =
30
pF
,
See
Fig
u
re
1
300 ns
tTHL T ransition time, high-to-low-level output 300 ns
PARAMETER MEASUREMENT INFORMATION
Output
CL = 30 pF
(see Note B)
GND
VCC1 VCC2
EN
A
5 V 24 VInput
3 V
Y
TEST CIRCUIT
Pulse
Generator
(see Note A)
90%
10%
1.5 V
tftr3 V
0
tPHL VOH
tTHL tTLH
VOLTAGE WAVEFORMS
50%
tPLH
Output
Input
VOL
1.5 V
10%
50%
90%
10% 10%
90% 90%
tw
NOTES: A. The pulse generator has the following characteristics: tr 10 ns, tf 10 ns, tw = 10 µs, PRR = 5 kHz, ZO = 50 .
B. CL includes probe and jig capacitance.
Figure 1. Test Circuit and Voltage Waveforms
L293D
QUADRUPLE HALF-H DRIVER
SLRS008A – SEPTEMBER 1986 – REVISED MAY 1990
3–4 POST OFFICE BOX 655303 DALLAS, TEXAS 75265
APPLICATION INFORMATION
24 V5 V
10 k
VCC1 VCC2
16 3
1,2EN
1
1A
2
2A
7
3,4EN
9
3A
10
4A
15
Control A
Control B
4, 5, 12, 13
GND
Thermal
Shutdown
Motor
1Y
3
2Y
6
3Y
11
4Y
14
Figure 2. Two-Phase Motor Driver
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Copyright 1998, Texas Instruments Incorporated