ULN2803 High-Voltage High-Current Darlington Array
The ULN2803 IC is a high-voltage, high-current Darlington transistor array that enables interfacing TTL signals with higher voltage/current loads. This 18-pin IC includes eight transistors, making it perfect for switching higher level signals. Key features include:
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Product Details:
The ULN2803 is an Integrated Circuit (IC) featuring a high-voltage, high-current Darlington transistor array, designed for interfacing TTL signals with higher voltage and current loads. With an 18-pin configuration, this IC includes eight transistors that receive low-level signals (TTL, CMOS, PMOS, NMOS) and effectively switch on or off higher-level signals.
Pins 1-8 are for low-level inputs, pin 9 is grounded (reference for low-level signals), pin 10 connects to the positive side of the relay coil voltage, and pins 11-18 are the outputs. Each channel can handle peak currents of 600mA, and suppression diodes offer protection against back EMF while driving inductive loads.
Use of the Product:
This IC is widely used in relay driving, motor driving, LED driving, and other high-power applications. Its ability to switch high-level signals while interfacing with low-level control signals makes it an essential component for many electronic designs.
Benefit of the Product:
The ULN2803 provides numerous benefits, including high current capacity, compatibility with various logic families (TTL, CMOS, PMOS, NMOS), and integrated suppression diodes for protection. It's a versatile and reliable IC for diverse applications requiring high-power switching.
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