| PartNumber | DS21Q42TN | DS21Q42T+ | DS21Q42T |
| Description | Telecom Interface ICs Enhanced Quad T1 Framer | Telecom Interface ICs Enhanced Quad T1 Framer | Telecom Interface ICs Enhanced Quad T1 Framer |
| Manufacturer | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Product Category | Telecom Interface ICs | Telecom Interface ICs | Telecom Interface ICs |
| RoHS | N | Y | - |
| Product | T1 Framers | T1 Framers | T1 Framers |
| Supply Voltage Max | 3.63 V | 3.63 V | 3.63 V |
| Supply Voltage Min | 2.97 V | 2.97 V | 2.97 V |
| Minimum Operating Temperature | - 40 C | 0 C | 0 C |
| Maximum Operating Temperature | + 85 C | + 70 C | + 70 C |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | TQFP-128 | LQFP-128 | LQFP-128 |
| Packaging | Tube | Bulk | Tube |
| Data Rate | 2.048 Mb/s | 2.048 Mb/s | 2.048 Mb/s |
| Series | DS21Q42TN | DS21Q42T | DS21Q42T |
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Number of Channels | 4 Channel | 4 Channel | 4 Channel |
| Moisture Sensitive | Yes | - | Yes |
| Operating Supply Voltage | 3.3 V | 3.3 V | 3.3 V |
| Product Type | Telecom Interface ICs | Telecom Interface ICs | Telecom Interface ICs |
| Factory Pack Quantity | 72 | - | 72 |
| Subcategory | Interface ICs | Interface ICs | Interface ICs |
| Unit Weight | 0.017760 oz | 0.021693 oz | 0.021693 oz |
| Part # Aliases | - | DS21Q42T | - |