Product Information Product Replacement for the UDN2987x 8-Channel Source Driver with Overcurrent Protection Introduction The UDN2987x 8-Channel Source Driver with Overcurrent Protection has been a very successful product for over 15 years. However, technological advancements in the fabrication process have lead to the design of a more efficient and more cost effective solution with added benefits, the UDN2987x-6. Although the UDN2987x-6 is advertised as a pin-for-pin replacement for the UDN2987x, there are some important differences between them that could affect some applications. These considerations are detailed in the following table. Comparison of Benefits and Notable Differences UDN2987x UDN2987x-6 Driver Supply Voltage: VBB = 7 to 35 V Driver Supply Voltage: VBB = 4.75 to 35 V (Can now be driven directly from a 5 V logic supply.) Driver Supply Current: At VIN = 2.4 V, Typical = 13 mA At VIN = 0.4 V, Typical = 8.0 mA Driver Supply Current: At VIN = 2.4 V, Typical = 7.0 mA At VIN = 0.4 V, Typical = 6.0 mA Input Voltage: Max = 15 V Input Voltage: Min = –0.3 V, Max = 14 V Input Current: At VIN = 2.4 V, Max = 170 μA At VIN = 5.0 V, Max = 1020 μA At VIN = 12.0 V, Max= 1800 μA Input Current: At VIN = 2.4 V, Max = 100 μA At VIN = 5.0 V, Max = 600 μA At VIN = 12.0 V, Max = 1000 μA Overcurrent Protection: To VBB = 35 V Overcurrent Protection: To VBB = 30 V (Can no longer guarantee short circuit protection at VBB > 30 V.) Propagation Delay Time: tPLH = 300 ns (Typical), = 600 ns (Max) tPHL = 2000 ns (Typical), = 4000 ns (Max) Propagation Delay Time: tPLH = 100 ns (Typical), = 600 ns (Max) tPHL = 200 ns (Typical), = 1000 ns (Max) (Provides significantly faster turn-off.) Note: ▪ ▪ ▪ ▪ Typical UDN2987x-6 parameter values were taken from one random lot. Typical parameter values were derived using the same conditions for both device types. Max = maximum specified value found in the datasheet. Min = minimum specified value found in the datasheet. The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no responsibility for its use; nor for any infringement of patents or other rights of third parties which may result from its use. Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detailed specifications as may be required to permit improvements in the design of its products. Copyright © 2006, Allegro MicroSystems, Inc. AN295042