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L293, L293D QUADRUPLE HALF-H DRIVERS
SLRS008B – SEPTEMBER 1986 – REVISED JUNE 2002

D D D D D D D D D D

Featuring Unitrode L293 and L293D Products Now From Texas Instruments Wide Supply-Voltage Range: 4.5 V to 36 V Separate Input-Logic Supply Internal ESD Protection Thermal Shutdown High-Noise-Immunity Inputs Functional Replacements for SGS L293 and SGS L293D Output Current 1 A Per Channel(600 mA for L293D) Peak Output Current 2 A Per Channel (1.2 A for L293D) Output Clamp Diodes for Inductive Transient Suppression (L293D)

N, NE PACKAGE (TOP VIEW)

1,2EN 1A 1Y HEAT SINK AND GROUND 2Y 2A VCC2

1 2 3 4 5 6 7 8

16 15 14 13 12 11 10 9

VCC1 4A 4Y HEAT SINK AND GROUND 3Y 3A 3,4EN

DWP PACKAGE (TOP VIEW)

description
The L293 and L293D are quadruple high-current half-Hdrivers. The L293 is designed to provide bidirectional drive currents of up to 1 A at voltages from 4.5 V to 36 V. The L293D is designed to provide bidirectional drive currents of up to 600-mA at voltages from 4.5 V to 36 V. Both devices are designed to drive inductive loads such as relays, solenoids, dc and bipolar stepping motors, as well as other high-current/high-voltage loads inpositive-supply applications.

1,2EN 1A 1Y NC NC NC HEAT SINK AND GROUND NC NC 2Y 2A VCC2

1 2 3 4 5 6 7 8 9 10 11 12 13 14

28 27 26 25 24 23 22 21 20 19 18 17 16 15

VCC1 4A 4Y NC NC NC HEAT SINK AND GROUND NC NC 3Y 3A 3,4EN

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 inpairs, 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. When the enable input is low, those drivers are disabled and their outputs are off and in the high-impedance state. With the proper data inputs, each pair of drivers forms a full-H (or bridge)reversible drive suitable for solenoid or motor applications. On the L293, external high-speed output clamp diodes should be used for inductive transient suppression. A VCC1 terminal, separate from VCC2, is provided for the logic inputs to minimize device power dissipation. The L293and L293D are characterized for operation from 0°C to 70°C.

Please be aware that an important notice concerningavailability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright  2002, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing doesnot necessarily include testing of all parameters.

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

1

L293, L293D QUADRUPLE HALF-H DRIVERS
SLRS008B – SEPTEMBER 1986 – REVISED JUNE 2002

block diagram
VCC1 1 0 1 0 1 2 1 3 4 M 5 6 2 1 0 7 8 3 10 9 4 14 13 12 11

16 15 1 0 M

1 0 1 0 M

VC NOTE: Output diodes are internal in L293D. TEXAS INSTRUMENTS AVAILABLE OPTIONS PACKAGE TAPLASTIC DIP (NE) L293NE L293DNE

0°C to 70°C

AVAILABLE OPTIONS PACKAGED DEVICES TA SMALL OUTLINE (DWP) L293DWP L293DDWP PLASTIC DIP (N) L293N L293DN

0°C to 70°C

The DWP package is available taped and reeled. Add the suffix TR to device type (e.g., L293DWPTR).

2

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

L293, L293D QUADRUPLE HALF-H DRIVERS
SLRS008B – SEPTEMBER 1986 –REVISED JUNE 2002

FUNCTION TABLE (each driver) INPUTS† OUTPUT A H L X EN H H L Y 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.

logic diagram
1A 1,2EN 2A 2 1 7

3A 3,4EN 4A

10 9 15

schematics of inputs and outputs (L293)
EQUIVALENT OF EACH INPUT...