motor-drivers

L293D

Key datasheet specifications and the closest alternatives, ranked by parametric similarity and grounded in the manufacturer datasheet.

01 — Overview

This ST Microelectronics datasheet covers the L293D and L293DD, four-channel motor drivers with internal diodes. It details their use for driving inductive loads like DC motors at frequencies up to 5 kHz. Key parameters include a continuous output current of 600mA per channel, a peak current of 1.2A, supply voltages from 4.5V to 36V, and quiescent currents between 4mA and 24mA depending on logic state. The document also specifies absolute maximum ratings and thermal resistance values for both DIP and SO packages.

02 — Key specifications

Datasheet parameters

ParameterMinTypMaxConditions
quiescent current — 2 mA 6 mA Vi = L; IO = 0; Ven = H
output current — — 1.2 A
supply voltage range 4.5 V — 36 V
forward voltage — 1.3 V — IO = 600nA
power dissipation — — 4 W
rise time — 250 ns — 0.1 to 0.9 VO
fall time — 250 ns — 0.9 to 0.1 VO
03 — Alternatives

Closest matches to L293D

DRV8803DW 1.7× higher supply voltage range, 1.5× lower output current, 1.4× lower fall time
DRV8803PWPR 1.7× higher supply voltage range, 1.4× lower fall time, 1.4× lower rise time
DRV8833 3.0× lower supply voltage range, 1.6× lower fall time, 1.4× lower rise time
A4988 2.0× higher quiescent current, 1.2× higher output current, 1.1× lower forward voltage
TB6612FNG 10.4× lower rise time, 6.8× lower supply voltage range, 6.1× lower fall time
TB67S109AFNG 3.1× lower rise time, 2.8× lower fall time, 1.4× higher supply voltage range
TB67H450FNG 4.2× lower rise time, 3.1× lower fall time, 2.9× higher output current
TB67H451AFNG 4.2× lower rise time, 3.1× lower fall time, 2.9× higher output current
04 — FAQ

Frequently asked questions

What is the fall time specification for the L293D?

The fall time is 250 ns measured from 0.9 to 0.1 VO.

What is the forward voltage when IO = 600nA?

The forward voltage is 1.3 V when IO = 600nA.

What is the output current of the L293D?

The output current is 1.2 A.

What is the power dissipation of the L293D?

The power dissipation is 4 W.

What is the quiescent current when Vi = L, IO = 0, and Ven = H?

The quiescent current is 2 mA.

What is the rise time of the L293D?

The rise time is 250 ns from 0.1 to 0.9 VO.

What is the supply voltage range for the L293D?

The supply voltage range is 36 V.

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