Hello Abhi,
Thanks for your quick response.
Yes, voltages on addressing pins are OK. Matter a fact I tried all 8 addresses of the device (several times) and device always correctly responds at chosen address and always with the this same value.
For replacing the part I'll have to wait for next bunch of sensors to arrive since all devices I ordered for this project are already soldered on their PCBs.
90 TMP275s are in fact installed within two buildings (44 + 46). At each this two sites I use 8 x I2C Mux device which gives me individual access to each sensor.
B Regards,
Josip