L293D Motor driver IC

The L293D are quadruple high-current half-H drivers. This device 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 1,2 EN and drivers 3 and 4 enabled by 3,4 EN. 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.

Features
Wide Supply-Voltage Range: 4.5 V to 36 V
Separate Input-Logic Supply
Pin compatible with L293D
Internal ESD Protection
Thermal Shutdown
High-Noise-Immunity Inputs
Output Current 0.6 A Per Channel
Peak Output Current 2 A Per Channel
Output Clamp Diodes for Inductive Transient Suppression

Description

The L293D are quadruple high-current half-H drivers. This device 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 1,2 EN and drivers 3 and 4 enabled by 3,4 EN. 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.

Features
Wide Supply-Voltage Range: 4.5 V to 36 V
Separate Input-Logic Supply
Pin compatible with L293D
Internal ESD Protection
Thermal Shutdown
High-Noise-Immunity Inputs
Output Current 0.6 A Per Channel
Peak Output Current 2 A Per Channel
Output Clamp Diodes for Inductive Transient Suppression

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