These are Octal(8 Way) Common Emitter NPN Darlington Transistor Driver Arrays, these are LOW SIDE Drivers, one end of the load is connected to the + Supply rail the the other end of the load is connected to this device output pin, when the input is triggered the device grounds the negative end of the load making the circuit,
There are also HIGH SIDE driver IC's like the UDN2981AT we also have listed, with this device the negative end of the load is connected to the GND and the IC feeds the load with a high voltage seperate from the logic supply allowing you to drive loads up to 50 Vots at ½ Amp from a 5V logic signal like a microcontroller, Arduino etc,
Rated to run a load at up to 50 Volts and take up to 0.5A per channel these devices are great for a number of power driving applications such as high power LED's, Relays, Electromechanical Valves, Small Stepper Motors etc and allow you to drive them from a 5V TTL input from a circuit or microcontroller like a Basic Stamp, PIC or Arduino for example,
Driving Inductive loads like motors and relays is made simpler because these devices include integral suppression diodes for each channel so Back EMF from turning off an inductive load does not damage the devices, if you require more power then 0.5A for a load you can join up to two channels inouts and outputs to get a 1 Amp of drive,
These come in an 18-Pin PDIP package
Specifications
| Configuration | Octal Common Emitter | |
| Dimensions | 23.24 x 7.1 x 3.93mm | |
| Height | 3.93mm | |
| Length | 23.24mm | |
| Maximum Collector Emitter Saturation Voltage | 1.1 V | |
| Maximum Collector Emitter Voltage | 50 V | |
| Maximum Continuous Collector Current | 0.5 A | |
| Maximum Emitter Base Voltage | 50 V | |
| Maximum Operating Temperature | +85 °C | |
| Minimum DC Current Gain | 1000 | |
| Minimum Operating Temperature | -20 °C | |
| Mounting Type | Through Hole | |
| Number of Elements per Chip | 8 | |
| Package Type | PDIP | |
| Pin Count | 18 | |
| Transistor Type | NPN | |
| Width | 7.1mm |
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BasicMicroUK Price Only £4.99 for 5 IC's
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