1NB4-5036 comparator pins
44-pin LQFP, 0.8mm pitch
based on use in 16717A module
A little more information:
Input pin 35 = output pin 21.
On 16751B U85, output pin 21 = pod 1 bit 4, and output pin 23 = pod 1 bit 5. Output pins 10, 12, 14, 16 are bits 0 to 3, but not necessarily in that order.