LINEAR INTEGRATED CIRCUITS
PUSH-PULL FOUR CHANNEL DRIVERS
The L293 and the L293E are monolithic integrated high voltage, high current four channel drivers in
dual in-line plastic package with 16 leads and 20 leads respectively. They are designed to accept standard
DTL or TTL input logic levels and drive inductive loads (such as relays, solenoids, DC and stepping
motors) and switching power transistors.
Both are provided of complementary push-pull output stage, two inhibit inputs (which disable two
channels each), and an additional supply inputs so that the logic circuitry may run at a lower voltage to
reduce power dissipation.
In the L293E the emitters of the lower transistors of each push-pull stage are not internally grounded
and the corresponding pins can be used for the connection of an external sensing resistor, making very
easy switch-mode current control.
The main features of the L293 and of the L293E are:
1A output current capability per channel
2A peak output current (non-repetitive) per channel
Logical "0" input voltage up to 1.5V (high noise immunity).
The devices are assembled in new packages which have the four central pins connected together and used
for heatsinking and grounding.
ABSOLUTE MAXIMUM RATINGS
Tstg , Tj
Logic supply voltage
Peak output current (non-repetitive)
Total power dissipation at TgrOUnd-Pins= 800C
Storage and junction temperature
ORDERING NUMBERS: L293B (16 leads)
L293E (20 leads)
-40 to 150
Dimensions in mm