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TI's 7-ch relay driver claims 80% reduced board space

Posted: 24 Aug 2012     Print Version  Bookmark and Share

Keywords:relay driver  CMOS  interface 

Texas Instruments Inc. (TI) unveils the ULN2003LV, a fully-integrated, seven-channel relay driver that can support low-voltage relays from as low as 1.8V up to 5V.


The ULN2003LV relay driver replaces a handful of discrete components with a single device to drive lower voltages for data relays and rails within telecommunications equipment. Using the ULN2003LV integrated circuit (IC), customers can reduce board space by up to 80 per cent, while lowering power consumption and cost, said TI.

The relay has an input resistor capacitor (RC) snubber that is said to greatly improve the driver performance in noisy operating conditions. Its internal input pull-down resistor allows input logic to be tri-stated for greater efficiency at higher loads. The relay's 1.8V to 5V CMOS logic input interface is compatible with a wider range of microcontrollers and other logic interfaces compared to the competition, according to TI.

The ULN2003LV is available in 10mm x 4mm, 16-pin SOIC and 5.1mm x 4.5mm, 16-pin TSSOP packages. Suggested retail pricing in 100-unit quantities is Rs.8.20 ($0.15).

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