Original question:
Dear team,
I would like to know the difference between LM77CIMX-3/NOPB vs LM77CIM-5/NOPB.
Based on below E2E link, -3 is for 3.3V and -5 is for 5V input.
But in datasheet operation rating>note #4, both part numbers of the LM77 will operate properly over the +VS supply voltage range of 3V to 5.5V
Could you let me know the difference for this two parts?
LM77CIMX-3/NOPB vs LM77CIM-5/NOPB.
Regards,
Ben
Hi Ben,
As noted in the post you linked, the -3 and -5 indicate temperature specs that apply to a supply voltage range of 3.0V to 3.6V and 4.5V to 5.5V, respectively. This is clarified in the notes above and below the Temperature-to-Digital Converter Characteristics table in the datasheet (see snippet shown below).
As far as CIM vs. CIMX, the only difference is packaging size. CIM represents a quantity of 95 and comes in a tube, whereas CIMX represents a quantity of 2,500 and comes in a tape and reel. This is represented in the ordering & quality table on the product page (see snippet below).
This table summarizes the difference between the two parts you mentioned.
| Part | Voltage Supply Range for Temp Specs | Packaging Quantity and Carrier |
| LM77CIMX-3/NOPB | 3.0V to 3.6V | 2,500 | Tape and Reel |
| LM77CIM-5/NOPB | 4.5V to 5.5V | 95 | Tube |
Best regards,
Jesse
