Features: * 50 V or 80 V Source Outputs
* Output Current to -500 mA
* Output Transient-Suppression Diodes
* To 3.3 MHz Data-lnput Rate
* Low-Power CMOS Logic and LatchesPinout
SpecificationsOutput Voltage, VOUT
(UCN5890A & UCN5890LW) ............. 80 V
(UCN5891A & UCN5891LW) ............. 50 V
Logic Supply Voltage Range,....
VDD .....................................4.5 V to 15 V
Driver Supply Voltage Range, VBB
(UCN5890A/LW)................... 20 V to 80 V
(UCN5891A/LW).................. 5.0 V to 50 V
Input Voltage Range,
VIN ........................ -0.3 V to VDD + 0.3 V
Continuous Output Current,
IOUT .......................................... -500 mA
Allowable Package Power Dissipation,
PD .......................................... See Graph
Operating Temperature Range,
TA .................................... -20 to +85
Storage Temperature Range,
TS .................................. -55 to +150DescriptionFrequently applied in non-impact printer systems, the UCN5890A, UCN5890LW, UCN5891A, and UCN5891LW are BiMOS 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 of UCN5890A, UCN5890LW, UCN5891A, and UCN5891LW include multiplexed LED and incandescent displays, relays, solenoids, and similar peripheral loads to a maximum of 500 mA per output.
Except for output voltage ratings, these smart high-side driver ICs UCN5890A, UCN5890LW, UCN5891A, and UCN5891LW 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).
BiMOS II UCN5890A, UCN5890LW, UCN5891A, and UCN5891LW have higher data-input rates than the original BiMOS 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 compatible with standard CMOS and NMOS logic levels. TTL circuits of UCN5890A, UCN5890LW, UCN5891A, and UCN5891LW 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' UCN5890A, UCN5890LW, UCN5891A, and UCN5891LW 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. Complementary, 8-bit serial-input, latched sink drivers are the Series UCN5820A.
5891 Data Sheet
