| PartNumber | MAX6861UK20-T | MAX6861UK21+T | MAX6861UK20+T |
| Description | Supervisory Circuits | Supervisory Circuits Single nPower Supervisor | Supervisory Circuits Single nPower Superviso |
| Manufacturer | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Product Category | Supervisory Circuits | Supervisory Circuits | PMIC - Supervisors |
| Type | Voltage Supervisory | Voltage Supervisory | Simple Reset/Power-On Reset |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | SOT-23-5 | SOT-23-5 | - |
| Threshold Voltage | 2 V | 2.1 V | 1.2 V to 5.5 V |
| Number of Inputs Monitored | 1 Input | 1 Input | 1 Input |
| Output Type | Active Low, Push-Pull | Active Low, Push-Pull | Active Low Push-Pull |
| Manual Reset | Manual Reset | Manual Reset | Manual Reset |
| Watchdog Timers | No Watchdog | No Watchdog | No Watchdog |
| Battery Backup Switching | No Backup | No Backup | No Backup |
| Supply Voltage Max | 5.5 V | 5.5 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Series | MAX6861 | MAX6861 | MAX6861 |
| Packaging | Reel | Reel | Tape & Reel (TR) |
| Height | 1.1 mm | 1.1 mm | - |
| Length | 2.9 mm | 2.9 mm | - |
| Width | 1.63 mm | 1.63 mm | - |
| Brand | Maxim Integrated | Maxim Integrated | - |
| Overvoltage Threshold | 2.05 V | 2.153 V | 2.05 V |
| Undervoltage Threshold | 1.95 V | 2.048 V | 1.95 V |
| Chip Enable Signals | No Chip Enable | No Chip Enable | No Chip Enable |
| Operating Supply Current | 7 uA | 7 uA | 7 uA |
| Pd Power Dissipation | 571 mW | 571 mW | - |
| Power Fail Detection | No | No | No |
| Product Type | Supervisory Circuits | Supervisory Circuits | - |
| Subcategory | PMIC - Power Management ICs | PMIC - Power Management ICs | - |
| Supply Voltage Min | 1.1 V | 1.1 V | - |
| Part # Aliases | MAX6861 | MAX6861 | MAX6861 |
| Unit Weight | 0.001058 oz | 0.001058 oz | - |
| RoHS | - | Y | - |
| Factory Pack Quantity | - | 2500 | - |
| Package Case | - | - | SOT-23-5L |
| Operating Temperature | - | - | -40°C ~ 85°C (TA) |
| Mounting Type | - | - | Surface Mount |
| Supplier Device Package | - | - | SOT-23-5 |
| Output | - | - | Push-Pull, Totem Pole |
| Reset | - | - | Active Low |
| Number of Voltages Monitored | - | - | 1 |
| Reset Timeout | - | - | Adjustable/Selectable |
| Voltage Threshold | - | - | 2V |
| Pd Power Dissipation | - | - | 571 mW |
| Supply Voltage Max | - | - | 5.5 V |
| Supply Voltage Min | - | - | 1.1 V |