I expected that the outputs would look different if it were a TMS1470 with VFD outputs, but it looks the same as the LED version. But the code number at the bottom of the die starts out 28H, whereas the other 4 TMS1400s start out 28L. I assume that means 28 pins, high or low voltage.
Last edited by seanriddle; 03/17/1512:27 AM. Reason: astro die shot