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Texas Instruments ULN2803ADWG4 Darlington Driver SO18

Order Code:  

82-0669

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1 review
Brand: Texas Instruments  Copy to clipboard MPN: ULN2803ADWG4  Copy to clipboard
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Discontinued

A high-current Darlington transistor array consisting of eight NPN Darlington pairs that feature high-voltage outputs with Common-Cathode clamp diodes for switching inductive loads. Applications include relay drivers, hammer drivers, lamp drivers, display drivers (LED and gas discharge), line drivers and logic buffers.
  • Darlington transistor array
  • 8x Drivers
  • CMOS
  • TTL Input compatibility
  • 500mA Peak output current
  • 50V Output voltage
  • 50V Switching voltage
  • 130ns Delay time
  • Working temperature -40°C to +85°C
  • DIL-18 Case
Height 2.65mm
Input Compatibility CMOS, TTL
Length 11.75mm
Operating Temperature Range -40 to +85°C
Type Darlington
Package/Case 18-SOIC
Width 7.6mm

Questions


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02 August 2013 Question by: Rapid Customer | Product code: 82-0669
Q. Would this be one of the best choices to buffer the action of Raspberry Pi pin(s) when defined as output. Is this 100% safe way of protecting the Pi even if the Pi pin is accidently redefined as an input pin when still wired as an output pin. Thank you.
A. Hi N Chettleburgh. Thank you for your question. This should be fine to use when configured as an output. If left in the circuit and re-configured as an input, because of the high impedance we would think that it would do nothing and should not harm the Raspberry Pi.

Reviews


Ideal for building interface for computers

Reviewed by: Nyge - 02 August 2013
Using this chip it is possible to build a forgiving interface to link computer output to relays ... relays are ideal for operating most everyday technology applications such as motors. It is all straightforward wiring for the novice and a self build will save much cost. Also used these in a project to pick up light from programmed light patches on monitor using multiple LDRs in a potential divider input - ideal for very many independent outputs - ideal in model railways.