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| PartNumber | DS21Q58L+ | DS21Q554N | DS21Q55DK |
| Description | Telecom Interface ICs Quad E1 Transceiver | Telecom Interface ICs Quad E1 Transceiver | KIT DESIGN FOR DS21Q55 |
| Manufacturer | Maxim Integrated | Maxim Integrated | - |
| Product Category | Telecom Interface ICs | Telecom Interface ICs | - |
| RoHS | Y | N | - |
| Product | E1 Line Interface Units - LIUs | T1/E1 Line Interface Units - LIUs | - |
| Supply Voltage Max | 3.465 V | - | - |
| Supply Voltage Min | 3.135 V | - | - |
| Minimum Operating Temperature | 0 C | - | - |
| Maximum Operating Temperature | + 70 C | - | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | LQFP-100 | BGA | - |
| Packaging | Tube | Tube | - |
| Data Rate | 64 kb/s | - | - |
| Series | DS21Q58L | DS21Q554N | - |
| Brand | Maxim Integrated | Maxim Integrated | - |
| Number of Channels | 4 Channel | 4 Channel | - |
| Moisture Sensitive | Yes | Yes | - |
| Operating Supply Voltage | 3.3 V | 5 V | - |
| Product Type | Telecom Interface ICs | Telecom Interface ICs | - |
| Factory Pack Quantity | 90 | 40 | - |
| Subcategory | Interface ICs | Interface ICs | - |
| Part # Aliases | 90-21Q58+L00 DS21Q58L | 90-21Q55-4N0 DS21Q554N | - |
| Unit Weight | 0.046530 oz | - | - |