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| # | Part: | Description: | Manuf. | Package | Pins | T°min | T°max | PDF size |
| 1. |  CAT1021WE-25TE13 | Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer | Catalyst Semiconductor | CATALYST | - | - | - | 163 Kb |
| 2. | CAT1021WE-28TE13 | Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer | Catalyst Semiconductor | CATALYST | - | - | - | 163 Kb |
| 3. | CAT1021WE-30TE13 | Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer | Catalyst Semiconductor | CATALYST | - | - | - | 163 Kb |
| 4. | CAT1021WE-42TE13 | Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer | Catalyst Semiconductor | CATALYST | - | - | - | 163 Kb |
| 5. | CAT1021WE-45TE13 | Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer | Catalyst Semiconductor | CATALYST | - | - | - | 163 Kb |
| 6. | CAT1021WI-25 | Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer | Catalyst Semiconductor | CATALYST | - | - | - | 281 Kb |
| 7. | CAT1021WI-25-GT2 | Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer | Catalyst Semiconductor | CATALYST | - | - | - | 281 Kb |
| 8. | CAT1021WI-25-GT2 | Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer | Catalyst Semiconductor | CATALYST | - | - | - | 202 Kb |
| 9. | CAT1021WI-25-GT3 | Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer | Catalyst Semiconductor | CATALYST | - | - | - | 202 Kb |
| 10. | CAT1021WI-25-GT3 | Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer | Catalyst Semiconductor | CATALYST | - | - | - | 281 Kb |
| 11. | CAT1021WI-25-T2 | Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer | Catalyst Semiconductor | CATALYST | - | - | - | 202 Kb |
| 12. | CAT1021WI-25-T3 | Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer | Catalyst Semiconductor | CATALYST | - | - | - | 202 Kb |
| 13. | CAT1021WI-25T2 | Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer | Catalyst Semiconductor | CATALYST | - | - | - | 281 Kb |
| 14. | CAT1021WI-25T3 | Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer | Catalyst Semiconductor | CATALYST | - | - | - | 281 Kb |
| 15. | CAT1021WI-25TE13 | Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer | Catalyst Semiconductor | CATALYST | - | - | - | 163 Kb |
| 16. | CAT1021WI-28 | Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer | Catalyst Semiconductor | CATALYST | - | - | - | 281 Kb |
| 17. | CAT1021WI-28-GT2 | Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer | Catalyst Semiconductor | CATALYST | - | - | - | 281 Kb |
| 18. | CAT1021WI-28-GT2 | Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer | Catalyst Semiconductor | CATALYST | - | - | - | 202 Kb |
| 19. | CAT1021WI-28-GT3 | Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer | Catalyst Semiconductor | CATALYST | - | - | - | 202 Kb |
| 20. | CAT1021WI-28-GT3 | Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer | Catalyst Semiconductor | CATALYST | - | - | - | 281 Kb |
