UCN5890 Datasheet | Allegro MicroSystems

5890 AND 5891 Frequently applied in non-impact printer systems, the UCN5890A, UCN5890LW, UCN5891A, and UCN5891LW are Bi MOS II serial-input, latched source (high-side) drivers. The octal, high-current smart-power ICs merge an 8-bit CMOS shift register, associated CMOS latches, and CMOS control logic (strobe and output enable) with sourcing power Darlington outputs. Typical applications include multiplexed LED and incandescent displays, relays, solenoids, and similar peripheral loads to a maximum of -500 m A per output. BIMOS II 8-BIT SERIAL-INPUT, LATCHED SOURCE DRIVERS GROUND CLOCK SERIAL DATA IN STROBE OUT 1 OUT 2 OUT 3 OUT 4 1 2 3 4 5 6 7 8 ST LATCHES CLK SHIFT REGISTER 16 VDD 15 OE 14 SERIAL DATA OUT LOGIC SUPPLY OUTPUT ENABLE LOAD SUPPLY OUT 8 OUT 7 OUT 6 OUT 5 Data Sheet 26182.12C VBB 13 12 11 10 9 Except for output voltage ratings, these smart high-side driver ICs are equivalent. The UCN5890A/LW are rated for operation with load supply voltages of 20 V to 80 V and a minimum output sustaining voltage of 50 V. The UCN5891A/LW are optimized for operation with supply voltages of 5 V to 50 V (35 V sustaining). Bi MOS II devices have higher data-input rates than the original Bi MOS circuits. With a 5 V supply, they will operate to at least 3.3 MHz. At 12 V, higher speeds are possible. The CMOS inputs are patible with standard CMOS and NMOS logic levels. TTL circuits may require the use of appropriate pull-up resistors to ensure a proper input-logic high. A CMOS serial data output, allows cascading these devices in multiple drive-line applications required by many dot matrix, alphanumeric, and bar graph displays. Suffix ‘A’ devices are supplied in a standard dual in-line plastic package with copper lead frame for enhanced package power dissipation characteristics. Suffix ‘LW’ devices are supplied in a standard wide-body SOIC package for surface-mount applications. Similar driver, featuring reduced output saturation voltage, are the UCN5895A and A5895SLW....