2879

2878 AND 2879 QUAD HIGH-CURRENT DARLINGTON SWITCHES These quad Darlington arrays are designed to serve as interface between low-level logic and peripheral power devices such as solenoids, motors, incandescent displays, heaters, and similar loads of up to 320 W per channel. Both integrated circuits include transient-suppression diodes that enable use with inductive loads. The input logic is compatible with most TTL, DTL, LSTTL, and 5 V CMOS logic. Type UDN2878W and UDN2879W 4 A arrays are identical except for output-voltage ratings. The former is rated for operation to 50 V (35 V sustaining), while the latter has a minimum output breakdown rating of 80 V (50 V sustaining). The lower-cost UDN2879W-2 is recommended for applications requiring load currents of 3 A or less. These less expensive devices are identical to the basic parts except for the maximum allowable load-current rating. For maximum power-handling capability, all drivers are supplied in a 12-pin single in-line power-tab package. The tab needs no insulation. External heat sinks are usually required for proper operation of these devices. Dwg. No. A-11,974 Data Sheet 29305.10B† FEATURES I Output Currents to 4 A I Output Voltages to 80 V I Loads to 1280 W I TTL, DTL, or CMOS Compatible Inputs I Internal Clamp Diodes I Plastic Single In-Line Package I Heat-Sink Tab ABSOLUTE MAXIMUM RATINGS at +25°C Free-Air Temperature for any driver (unless otherwise noted) Output Voltage, VCEX (UDN2878W) . . . . . . . . . . . . . ...