UCN5821A/LW, UCN5822A/LW are 8-bit serial-input, latched drivers with higher input speeds and stronger drive capability.
This document is a datasheet for the Allegro MicroSystems UCN5821A, UCN5821LW, UCN5822A, and UCN5822LW devices. These are 8-bit serial-input, latched drivers that utilize a merged combination of bipolar and MOS (BiMOS) technology. The devices feature an eight-bit CMOS shift register, CMOS control circuitry, eight CMOS data latches, and eight bipolar current-sinking Darlington output drivers.
| Data Input Rate | To 3.3 MHz |
|---|---|
| Output Leakage Current | 50 uA |
| Collector-Emitter Saturation Voltage | 1.6 V |
| Operating Temperature Range | -20°C to +85°C |
| Package Power Dissipation (Code A) | 2.1W |
The UCN5821A/LW and UCN5822A/LW are identical except for rated output voltage.
Yes, the DIP package and the SOIC package are electrically identical and share common terminal number assignments.
The CMOS inputs are compatible with standard CMOS and NMOS logic levels.