| 1218601 | MT90210AL | Multi-Rate Parallel Access Circuit | Mitel Semiconductor |
| 1218602 | MT90220 | Octal Inverse Multiplexing for ATM (IMA) Device with Flexible IMA and UNI mMode | Zarlink Semiconductor |
| 1218603 | MT90220AL | Octal IMA/UNI PHY Device | Mitel Semiconductor |
| 1218604 | MT90221 | Quad Inverse Multiplexing for ATM (IMA) Device with Flexible IMA and UNI Mode | Zarlink Semiconductor |
| 1218605 | MT90221AL | Quad IMA/UNI PHY Device | Mitel Semiconductor |
| 1218606 | MT9040 | Single reference frequency selectable, 3.3V Digital PLL with multiple clock outputs for stratum 4 applications | Zarlink Semiconductor |
| 1218607 | MT90401 | SONET/SDH System Synchronizer | Zarlink Semiconductor |
| 1218608 | MT90401AB | SONET/SDH system synchronizer. | Zarlink Semiconductor |
| 1218609 | MT9040AN | T1/E1 Synchronizer | Zarlink Semiconductor |
| 1218610 | MT9041 | Single reference frequency selectable Digital PLL with multiple clock outputs for T1/E1 trunk and backplane synchronization | Zarlink Semiconductor |
| 1218611 | MT9041AP | Multiple Output Trunk PLL | Mitel Semiconductor |
| 1218612 | MT9041B | T1/E1 System Synchronizer | Mitel Semiconductor |
| 1218613 | MT9041BP | T1/E1 System Synchronizer | Mitel Semiconductor |
| 1218614 | MT9042 | Global Digital Trunk Synchronizer | Mitel Semiconductor |
| 1218615 | MT9042AP | Global Digital Trunk Synchronizer | Mitel Semiconductor |
| 1218616 | MT9042B | Multitrunk System Synchronizer | Zarlink Semiconductor |
| 1218617 | MT9042C | Dual reference frequency selectable Digital PLL with multiple clock outputs for T1/E1 (ITU-T G.812 type IV) and Stratum ( 3, 4, 4E) applications | Zarlink Semiconductor |
| 1218618 | MT9042CP | Multitrunk System Synchronizer | Mitel Semiconductor |
| 1218619 | MT9043 | Dual reference frequency selectable, 3,3V Digital PLL with multiple clock outputs for T1/E1 and Stratum 4 and 4E applications | Zarlink Semiconductor |
|
| 1218620 | MT9043AN | T1/E1 System Synchronizer | Zarlink Semiconductor |
| 1218621 | MT9043AN48PINSSOP | T1/E1 System Synchronizer | Zarlink Semiconductor |
| 1218622 | MT9044 | Dual reference frequency selectable Digital PLL with multiple clock outputs for T1/E1 (ITU-T G.812 type IV), Stratum(3, 4, 4E) and STS-3/OC3 systems | Zarlink Semiconductor |
| 1218623 | MT9044AL | T1/E1/OC3 System Synchronizer | Mitel Semiconductor |
| 1218624 | MT9044AP | 0.3-7.0V; T1/E1/OC3 system synchronizer. For synchronization and timing control for multitrunk T1, E1 and STS-3/OC3 systems, ST-BUS clock and frame pulse sources | Mitel Semiconductor |
| 1218625 | MT9045 | Dual reference frequency selectable 3.3V Digital PLL with multiple clock outputs for T1/E1 (ITU-T G.812 type IV), Stratum( 3, 4, 4E) and STS-3/OC3 systems | Zarlink Semiconductor |
| 1218626 | MT9045AN | T1/E1/OC3 System Synchronizer | Zarlink Semiconductor |
| 1218627 | MT9046 | T1/E1 System Synchronizer with Holdover | Zarlink Semiconductor |
| 1218628 | MT9046AN | T1/E1 System Synchronizer with Holdover | Zarlink Semiconductor |
| 1218629 | MT90500 | 1024 Channel ATM AAL1 SAR | Zarlink Semiconductor |
| 1218630 | MT90500AL | Multi-Channel ATM AAL1 SAR | Mitel Semiconductor |
| 1218631 | MT90502 | Multi-Channel AAL2 SAR | Zarlink Semiconductor |
| 1218632 | MT90503 | 2048VC AAL1 SAR | Zarlink Semiconductor |
| 1218633 | MT90503AG | 2048VC AAL1 SAR | Zarlink Semiconductor |
| 1218634 | MT90520 | 8-Port Primary Rate Circuit Emulation AAL1 SAR | Zarlink Semiconductor |
| 1218635 | MT90520AG | 8-Port Primary Rate Circuit Emulation AAL1 SAR | Zarlink Semiconductor |
| 1218636 | MT90528 | 28-Port Primary Rate Circuit Emulation AAL1 SAR | Zarlink Semiconductor |
| 1218637 | MT90710 | High Speed Isochronous Multiplexer | Zarlink Semiconductor |
| 1218638 | MT90710AP | High-Speed Isochronous Multiplexer | Mitel Semiconductor |
| 1218639 | MT9072 | Octal T1/E1/J1 Framer | Zarlink Semiconductor |
| 1218640 | MT9072AB | Octal T1/E1/J1 Framer | Zarlink Semiconductor |
