| 1218521 | MT8979 | CEPT PCM 30/CRC-4 Framer & Interface | Zarlink Semiconductor |
| 1218522 | MT89790B | 0.3-7.0V; 40mA; CEPT PCM 30/CRC-4 framer & interface circuit. For primary rate ISDN network nodes, multiplexing equipment, private network: PBX to PBX links | Mitel Semiconductor |
| 1218523 | MT89790BN | 0.3-7.0V; 40mA; CEPT PCM 30/CRC-4 framer & interface circuit. For primary rate ISDN network nodes, multiplexing equipment, private network: PBX to PBX links | Mitel Semiconductor |
| 1218524 | MT89790BS | 0.3-7.0V; 40mA; CEPT PCM 30/CRC-4 framer & interface circuit. For primary rate ISDN network nodes, multiplexing equipment, private network: PBX to PBX links | Mitel Semiconductor |
| 1218525 | MT8979AC | ISO-CMOS ST-BUS¢â FAMILY CEPT PCM 30/CRC-4 Framer & Interface | Mitel Semiconductor |
| 1218526 | MT8979AE | ISO-CMOS ST-BUS¢â FAMILY CEPT PCM 30/CRC-4 Framer & Interface | Mitel Semiconductor |
| 1218527 | MT8979AP | ISO-CMOS ST-BUS¢â FAMILY CEPT PCM 30/CRC-4 Framer & Interface | Mitel Semiconductor |
| 1218528 | MT8980 | 256 x 256 Channels (8 TDM Streams at 2.048 Mbps) Non-blocking Digital Switch (DX) | Zarlink Semiconductor |
| 1218529 | MT8980D | ISO-CMOS ST-BUS FAMILY Digital Switch | Mitel Semiconductor |
| 1218530 | MT8980D-1 | ISO-CMOS ST-BUS¢â FAMILY Digital Switch | Mitel Semiconductor |
| 1218531 | MT8980DE | ISO-CMOS ST-BUS¢â FAMILY Digital Switch | Mitel Semiconductor |
| 1218532 | MT8980DE | ISO-CMOS ST-BUS¢â FAMILY Digital Switch | Mitel Semiconductor |
| 1218533 | MT8980DP | ISO-CMOS ST-BUS¢â FAMILY Digital Switch | Mitel Semiconductor |
| 1218534 | MT8980DP | ISO-CMOS ST-BUS¢â FAMILY Digital Switch | Mitel Semiconductor |
| 1218535 | MT8981 | 128 x 128 Channels (4 TDM Streamsat 2.048 Mbps) Non-blocking Digital Switch | Zarlink Semiconductor |
| 1218536 | MT8981D | ISO-CMOS ST-BUS¢â FAMILY Digital Switch | Mitel Semiconductor |
| 1218537 | MT8981D | Digital Switch | Zarlink Semiconductor |
| 1218538 | MT8981D | ISO-CMOS ST-BUS | Zarlink Semiconductor |
| 1218539 | MT8981D-1 | ISO-CMOS ST-BUS¢â FAMILY Digital Switch | Mitel Semiconductor |
|
| 1218540 | MT8981DC | ISO-CMOS ST-BUS¢â FAMILY Digital Switch | Mitel Semiconductor |
| 1218541 | MT8981DE | ISO-CMOS ST-BUS¢â FAMILY Digital Switch | Mitel Semiconductor |
| 1218542 | MT8981DE | ISO-CMOS ST-BUS¢â FAMILY Digital Switch | Mitel Semiconductor |
| 1218543 | MT8981DE | ISO-CMOS ST-BUS | Zarlink Semiconductor |
| 1218544 | MT8981DL | ISO-CMOS ST-BUS¢â FAMILY Digital Switch | Mitel Semiconductor |
| 1218545 | MT8981DP | ISO-CMOS ST-BUS¢â FAMILY Digital Switch | Mitel Semiconductor |
| 1218546 | MT8981DP | ISO-CMOS ST-BUS¢â FAMILY Digital Switch | Mitel Semiconductor |
| 1218547 | MT8981DP | ISO-CMOS ST-BUS | Zarlink Semiconductor |
| 1218548 | MT8981DP | Digital Switch | Zarlink Semiconductor |
| 1218549 | MT8981DP1 | ISO-CMOS ST-BUS | Zarlink Semiconductor |
| 1218550 | MT8981DPR | ISO-CMOS ST-BUS | Zarlink Semiconductor |
| 1218551 | MT8981DPR1 | ISO-CMOS ST-BUS | Zarlink Semiconductor |
| 1218552 | MT8982 | 64 x 64 Channels (2 TDM streams @ 2.048Mb/s) Non-blocking Digital Switch | Zarlink Semiconductor |
| 1218553 | MT8982-1 | ISO-CMOS ST-BUS¢â FAMILY Small Digital Switch (MiniDX) | Mitel Semiconductor |
| 1218554 | MT8982AC | ISO-CMOS ST-BUS¢â FAMILY Small Digital Switch (MiniDX) | Mitel Semiconductor |
| 1218555 | MT8982AE | ISO-CMOS ST-BUS¢â FAMILY Small Digital Switch (MiniDX) | Mitel Semiconductor |
| 1218556 | MT8982AE | ISO-CMOS ST-BUS¢â FAMILY Small Digital Switch (MiniDX) | Mitel Semiconductor |
| 1218557 | MT8982AN | ISO-CMOS ST-BUS¢â FAMILY Small Digital Switch (MiniDX) | Mitel Semiconductor |
| 1218558 | MT8982AN | ISO-CMOS ST-BUS¢â FAMILY Small Digital Switch (MiniDX) | Mitel Semiconductor |
| 1218559 | MT8982AS | ISO-CMOS ST-BUS¢â FAMILY Small Digital Switch (MiniDX) | Mitel Semiconductor |
| 1218560 | MT8982AS | ISO-CMOS ST-BUS¢â FAMILY Small Digital Switch (MiniDX) | Mitel Semiconductor |
