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| PartNumber | CAT1161LI-45-G | CAT1161LI-42-G | CAT1161LI-42 |
| Description | Supervisory Circuits CPU w/16K | Supervisory Circuits CPU w/16K | |
| Manufacturer | ON Semiconductor | ON | ON |
| Product Category | PMIC - Supervisors | IC Chips | IC Chips |
| Type | - | Voltage Supervisory | Voltage Supervisory |
| Packaging | - | Bulk | Bulk |
| Unit Weight | - | 0.032805 oz | 0.032805 oz |
| Mounting Style | - | Through Hole | Through Hole |
| Output Type | - | Active High Active Low Open Drain | Active High Active Low Open Drain |
| Pd Power Dissipation | - | 1 W | 1 W |
| Maximum Operating Temperature | - | + 85 C | + 85 C |
| Minimum Operating Temperature | - | - 40 C | - 40 C |
| Operating Supply Current | - | 3 mA | 3 mA |
| Battery Backup Switching | - | No Backup | No Backup |
| Supply Voltage Max | - | 6 V | 6 V |
| Supply Voltage Min | - | 2.7 V | 2.7 V |
| Package Case | - | PDIP-8 | PDIP-8 |
| Watchdog Timers | - | Watchdog | Watchdog |
| Threshold Voltage | - | 4.25 V to 4.5 V | 4.25 V to 4.5 V |
| Number of Inputs Monitored | - | 1 Input | 1 Input |
| Manual Reset | - | Manual Reset | Manual Reset |
| Chip Enable Signals | - | No Chip Enable | No Chip Enable |
| Power Fail Detection | - | No | No |
| Reset Delay Time | - | 5 us | 5 us |
| Overvoltage Threshold | - | 4.5 V | 4.5 V |
| Undervoltage Threshold | - | 4.25 V | 4.25 V |