| 1218321 | MT8888CS | Integrated DTMF Transceiver with Intel Micro Interface | Zarlink Semiconductor |
| 1218322 | MT8888CS-1 | Integrated DTMFTransceiver with Intel Micro Interface | Mitel Semiconductor |
| 1218323 | MT8888CS1 | Integrated DTMF Transceiver with Intel Micro Interface | Zarlink Semiconductor |
| 1218324 | MT8888CSR | Integrated DTMF Transceiver with Intel Micro Interface | Zarlink Semiconductor |
| 1218325 | MT8888CSR1 | Integrated DTMF Transceiver with Intel Micro Interface | Zarlink Semiconductor |
| 1218326 | MT8888CS_CS-1 | 6V; 10mA; integrated DTMF transceiver with intel micro interface. For paging systems, repeater systems/mobile radio, credit card systems, personal computers, interconnect dialers | Mitel Semiconductor |
| 1218327 | MT8889C | Integrated DTMFTransceiver with Adaptive Micro Interface | Mitel Semiconductor |
| 1218328 | MT8889C | Integrated DTMF Transceiver with Adaptive Micro Interface | Zarlink Semiconductor |
| 1218329 | MT8889C-1 | Integrated DTMFTransceiver with Adaptive Micro Interface | Mitel Semiconductor |
| 1218330 | MT8889CC | Integrated DTMFTransceiver with Adaptive Micro Interface | Mitel Semiconductor |
| 1218331 | MT8889CC-1 | Integrated DTMFTransceiver with Adaptive Micro Interface | Mitel Semiconductor |
| 1218332 | MT8889CC_CC-1 | 6V; 10mA; integrated DTMF transceiver with adaptive micro interface. For paging systems, repeater systems/mobile radio, credit card systems, personal computers, interconnect dialers | Mitel Semiconductor |
| 1218333 | MT8889CE | Integrated DTMFTransceiver with Adaptive Micro Interface | Mitel Semiconductor |
| 1218334 | MT8889CE-1 | Integrated DTMFTransceiver with Adaptive Micro Interface | Mitel Semiconductor |
| 1218335 | MT8889CE_CE-1 | 6V; 10mA; integrated DTMF transceiver with adaptive micro interface. For paging systems, repeater systems/mobile radio, credit card systems, personal computers, interconnect dialers | Mitel Semiconductor |
| 1218336 | MT8889CN | Integrated DTMFTransceiver with Adaptive Micro Interface | Mitel Semiconductor |
| 1218337 | MT8889CN-1 | Integrated DTMFTransceiver with Adaptive Micro Interface | Mitel Semiconductor |
| 1218338 | MT8889CN_CN-1 | 6V; 10mA; integrated DTMF transceiver with adaptive micro interface. For paging systems, repeater systems/mobile radio, credit card systems, personal computers, interconnect dialers | Mitel Semiconductor |
| 1218339 | MT8889CS | Integrated DTMFTransceiver with Adaptive Micro Interface | Mitel Semiconductor |
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| 1218340 | MT8889CS-1 | Integrated DTMFTransceiver with Adaptive Micro Interface | Mitel Semiconductor |
| 1218341 | MT8889CS_CS-1 | 6V; 10mA; integrated DTMF transceiver with adaptive micro interface. For paging systems, repeater systems/mobile radio, credit card systems, personal computers, interconnect dialers | Mitel Semiconductor |
| 1218342 | MT88E39 | CMOS Calling Number Identification Circuit(CNIC1.1) | Mitel Semiconductor |
| 1218343 | MT88E39AS | CMOS Calling Number Identification Circuit(CNIC1.1) | Mitel Semiconductor |
| 1218344 | MT88E41 | Extended Voltage Calling Number Identification Circuit (ECNIC) | Zarlink Semiconductor |
| 1218345 | MT88E41AE | CMOS Extended Voltage Calling Number Identification Circuit (ECNIC) | Zarlink Semiconductor |
| 1218346 | MT88E41AN | CMOS Extended Voltage Calling Number Identification Circuit (ECNIC) | Zarlink Semiconductor |
| 1218347 | MT88E41AS | CMOS Extended Voltage Calling Number Identification Circuit (ECNIC) | Zarlink Semiconductor |
| 1218348 | MT88E43 | Extended Voltage Calling Number Identification Circuit 2 | Zarlink Semiconductor |
| 1218349 | MT88E43AE | Extended Voltage Calling Number Identification Circuit 2 | Zarlink Semiconductor |
| 1218350 | MT88E43AS | Extended Voltage Calling Number Identification Circuit 2 | Zarlink Semiconductor |
| 1218351 | MT88E43B | Extended Voltage Calling Number Identification Circuit for CLIP, CID and CIDCW applications (Type 2) | Zarlink Semiconductor |
| 1218352 | MT88E45 | Dual inputs (tip/ring and 4 wire) Extended Voltage Calling Number Identification Circuit for CLIP, CID and CIDCW applications (Type 2) | Zarlink Semiconductor |
| 1218353 | MT88E45AS | 4-Wire Calling Number Identification Circuit 2(4-Wire CNIC2) | Mitel Semiconductor |
| 1218354 | MT88E45B | Dual inputs (tip/ring and 4 wire) Extended Voltage Calling Number Identification Circuit for CLIP, CID and CIDCW applications (Type 2) | Zarlink Semiconductor |
| 1218355 | MT88E45BN | 4-Wire Calling Number Identification Circuit 2 | Zarlink Semiconductor |
| 1218356 | MT88E45BN | 4-Wire Calling Number Identification Circuit 2 (4-Wire CNIC2) | Zarlink Semiconductor |
| 1218357 | MT88E45BN1 | 4-Wire Calling Number Identification Circuit 2 (4-Wire CNIC2) | Zarlink Semiconductor |
| 1218358 | MT88E45BNR1 | 4-Wire Calling Number Identification Circuit 2 (4-Wire CNIC2) | Zarlink Semiconductor |
| 1218359 | MT88E45BS | 4-Wire Calling Number Identification Circuit 2 (4-Wire CNIC2) | Zarlink Semiconductor |
| 1218360 | MT88E45BS | 4-Wire Calling Number Identification Circuit 2 | Zarlink Semiconductor |
