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| PartNumber | MXD1818UR22+T | MXD1818UR22 | MXD1818UR23 |
| Description | Supervisory Circuits 3-Pin uPower Reset Circuit | Processor Supervisor 2.18V 2.5V/3V/3.3V/5V 3-Pin SOT-23 - Product that comes on tape, but is not reeled (Alt: MXD1818UR22) | Power Supply Support Circuit, Fixed, 1 Channel, +2.31VV, BICMOS, PDSO3 |
| Manufacturer | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Product Category | Supervisory Circuits | PMIC - Supervisors | PMIC - Supervisors |
| RoHS | Y | - | - |
| Type | Voltage Supervisory | Simple Reset/Power-On Reset | Simple Reset/Power-On Reset |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | SOT-23-3 | - | - |
| Threshold Voltage | 2.5 V, 3 V, 3.3 V, 5 V | 2.5 V 3 V 3.3 V 5 V | 2.5 V 3 V 3.3 V 5 V |
| Number of Inputs Monitored | 1 Input | 1 Input | 1 Input |
| Output Type | Active Low, Open Drain | Active Low Open Drain | Active Low Open Drain |
| 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 |
| Reset Delay Time | 250 ms | 250 ms | 250 ms |
| Supply Voltage Max | 5.5 V | - | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 105 C | + 105 C | + 105 C |
| Series | MXD1818 | MXD1818 | MXD1818 |
| Packaging | Reel | Digi-ReelR Alternate Packaging | Tape & Reel (TR) |
| Height | 0.94 mm | - | - |
| Length | 2.92 mm | - | - |
| Width | 1.3 mm | - | - |
| Brand | Maxim Integrated | - | - |
| Overvoltage Threshold | 2.25 V | 2.25 V | 2.37 V |
| Undervoltage Threshold | 2.12 V | 2.12 V | 2.25 V |
| Chip Enable Signals | No Chip Enable | No Chip Enable | No Chip Enable |
| Operating Supply Current | 9 uA | 9 uA | 9 uA |
| Pd Power Dissipation | 320 mW | - | - |
| Power Fail Detection | No | No | No |
| Product Type | Supervisory Circuits | - | - |
| Factory Pack Quantity | 2500 | - | - |
| Subcategory | PMIC - Power Management ICs | - | - |
| Supply Voltage Min | 1 V | - | - |
| Part # Aliases | MXD1818 | MXD1818 | MXD1818 |
| Unit Weight | 0.000282 oz | 0.050717 oz | 0.050717 oz |
| Package Case | - | SOT-23-3 | SOT-23-3 |
| Operating Temperature | - | -40°C ~ 105°C (TA) | -40°C ~ 105°C (TA) |
| Mounting Type | - | Surface Mount | Surface Mount |
| Supplier Device Package | - | SOT-23-3 | SOT-23-3 |
| Output | - | Open Drain or Open Collector | Open Drain or Open Collector |
| Reset | - | Active Low | Active Low |
| Number of Voltages Monitored | - | 1 | 1 |
| Reset Timeout | - | 100 ms Minimum | 100 ms Minimum |
| Voltage Threshold | - | 2.18V | 2.31V |
| Pd Power Dissipation | - | 320 mW | 320 mW |
| Supply Voltage Max | - | 5.5 V | 5.5 V |
| Supply Voltage Min | - | 1 V | 1 V |