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| PartNumber | DS21Q552 | DS21Q552N+ | DS21Q552BN+ |
| Description | Telecom Interface ICs 5V Quad T1 Transceiver | Telecom Interface ICs 5V Quad T1 Transceiver | Telecom Interface ICs 5V Quad T1 Transceiver |
| Manufacturer | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Product Category | Telecom Interface ICs | Telecom Interface ICs | Telecom Interface ICs |
| Product | T1/E1 Line Interface Units - LIUs | T1/E1 Line Interface Units - LIUs | T1/E1 Line Interface Units - LIUs |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | BGA | BGA | BGA |
| Packaging | Tube | Tube | Tube |
| Series | DS21Q552 | DS21Q552N | DS21Q552BN |
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Number of Channels | 4 Channel | 4 Channel | 4 Channel |
| Moisture Sensitive | Yes | - | - |
| Operating Supply Voltage | 5 V | 5 V | 5 V |
| Product Type | Telecom Interface ICs | Telecom Interface ICs | Telecom Interface ICs |
| Factory Pack Quantity | 40 | 40 | 40 |
| Subcategory | Interface ICs | Interface ICs | Interface ICs |
| Part # Aliases | 90-21Q55-200 DS21Q552 | 90-21Q55+2N0 DS21Q552N | 90-21Q55+2BN DS21Q552BN |
| RoHS | - | Y | Y |