CMOS hex gate with mixed logic functions
The CD4572UBM is a Texas Instruments 4000B-series CMOS hex gate that integrates NOR, NAND, and inverter functions on a single die — six circuits with eight inputs total (1, 1, 2, 2, 1, 1). It operates across a 3V to 18V supply range, making it usable in battery-backed or unregulated rail designs where a 5V or 12V bus is the only available supply.
Output drive and package fit
Each output sinks or sources 6.8mA typical — enough to drive a standard TTL load or a low-power LED indicator, but not a relay coil directly. Housed in a 16-SOIC (0.154", 3.90mm width) surface-mount package, the CD4572UBM shares the same footprint as other 4000B-series SOIC-16 parts, so a single PCB layout serves multiple logic functions. No Schmitt-trigger input on any gate — the switching threshold follows the standard CMOS VDD/2 ratio. If the input signal is noisy or slow-rising, a separate Schmitt buffer is needed ahead of this gate.