1 Features
1• 1-A Output-Current Capability Per Driver
• Applications Include Half-H and Full-H Solenoid
Drivers and Motor Drivers
• Designed for Positive-Supply Applications
• Wide Supply-Voltage Range of 4.5 V to 36 V positive•
TTL- and CMOS-Compatible High-Impedance
Diode-Clamped Inputs
• Separate Input-Logic Supply
• Thermal Shutdown
• Internal ESD Protection
• Input Hysteresis Improves Noise Immunity
• 3-State Outputs
• Minimized Power Dissipation
• Sink/Source Interlock Circuitry Prevents highSimultaneous
Conduction
• No Output Glitch During Power Up or Power
Down
• Improved Functional Replacement for the SGS
L293

2 Applications
• Stepper Motor Drivers
• DC Motor Drivers
• Latching Relay Drivers

3 Description
The SN754410 is a quadruple high-current half-H
driver designed to provide bidirectional drive currents up to 1 A at voltages from 4.5 V to 36 V. The 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 compatible with TTL-and low-level
CMOS logic. Each output (Y) is a complete totempole
driver 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 become active and in phase with their
inputs. When the enable input is low, those drivers
are disabled and their outputs are off and in a highSimultaneous
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 separate supply voltage (VCC1) is provided for the
logic input circuits to minimize device power dissipation. Supply voltage VCC2 is used for the output
circuits.
The SN754410 is designed for operation from −40°C to 85°C.