Texas Instruments ULN2803ADWG4 Darlington Driver SO18

Order Code:

82-0669

Brand: Texas Instruments MPN: ULN2803ADWG4

RoHS Compliant
Country of Origin:

Discontinued

Product Details

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

Type	Darlington
Height	2.65mm
Input Compatibility	CMOS, TTL
Length	11.75mm
Operating Temperature Range	-40 to +85°C
Package/Case	18-SOIC
Width	7.6mm

Questions

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Friday, August 2, 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 - Friday, August 2, 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.