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| PartNumber | BU21050FS-E2 | BU21051FS-E2 | BU21050FS |
| Description | Capacitive Touch Sensors CAP SENSOR 4.5-5.5V 8ch SEN INPUT | Capacitive Touch Sensors CAP SENSOR 4.5-5.5V 8ch SEN INPUT | |
| Manufacturer | Rohm Semiconductor | Rohm Semiconductor | - |
| Product Category | Interface - Sensor and Detector Interfaces | Interface - Sensor and Detector Interfaces | - |
| Series | - | - | - |
| Type | Capacitive Switch | Capacitive Switch | - |
| Packaging | Digi-ReelR Alternate Packaging | Digi-ReelR Alternate Packaging | - |
| Termination Style | SMD/SMT | SMD/SMT | - |
| Package Case | SSOP- A32 | SSOP-A16 | - |
| Input Type | Logic | Logic | - |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | - |
| Mounting Type | Surface Mount | Surface Mount | - |
| Output Type | Logic | Logic | - |
| Interface | Port | Port | - |
| Supplier Device Package | 32-SSOPA | 16-SSOPA | - |
| Current Supply | 550μA | 500μA | - |
| Temperature Range | - 55 C to + 125 C | - 55 C to + 125 C | - |
| Operating Supply Voltage | 5 V | 5 V | - |
| Dimensions | 13.6 mm L x 7.8 mm W x 1.8 mm H | 6.6 mm L x 6.2 mm W x 1.5 mm H | - |
| Number of Channels | - | 2 Channel | - |