| LTC1344 | | | EIA530, EIA530-A, RS232, RS449, V.35, V.36, X.21 | | | | Included | SSOP-24 |
| LTC1344A | | | EIA530, EIA530-A, RS232, RS449, V.35, V.36, X.21 | | | | Included | SSOP-24 |
| LTC2873 | 1 | 1 | RS232, RS485, RS422, RS562 | Selectable 1Mbps/250kbps (RS232/RS562), 20Mbps (RS422/RS485) | | | Included | 4x5 QFN-24 |
| LTC1321 | 2 | 2 | RS232, RS562, RS422, RS485 | 120kbps (RS232/RS562), 10Mbps (RS422/RS485) | | | | N-24,SW-24 |
| LTC1323 | 2 | 3 | LocalTalk, RS232, RS422 | 120kbps (RS232/RS562), 2Mbps (RS422/RS485) | Data, Control | | | SO-16,SW-24 |
| LTC1387 | 2 | 2 | RS232, RS562, RS422, RS485 | 120kbps (RS232/RS562), 150kbps or 5Mbps (RS422/RS485) | | | | SSOP-20,SW-20 |
| LTC2870 | 2 | 2 | RS232, RS485, RS422, RS562 | 500kbps (RS232/RS562), 20Mbps (RS422/RS485) | | | Included | 4x5 QFN-28,TSSOP-28 |
| LTC1345 | 3 | 3 | V.35 | 10Mbps (V.35 Async), 5Mbps (V.35 Sync) | Data, Clock | | | NW-28,SW-28 |
| LTC1346A | 3 | 3 | V.35 | 10Mbps (V.35 Async), 5Mbps (V.35 Sync) | Data, Clock | | | SW-24 |
| LTC1543 | 3 | 3 | EIA530, EIA530-A, RS232, RS449, V.35, V.36, X.21 | 10Mbps (V.35 Async), 5Mbps (V.35 Sync), 100kbps (RS232/RS562), 10Mbps (RS422/RS485) | Data, Clock | | | SSOP-28 |
| LTC1546 | 3 | 3 | EIA530, EIA530-A, RS232, RS449, V.35, V.36, X.21 | 10Mbps (V.35 Async), 5Mbps (V.35 Sync), 100kbps (RS232/RS562), 10Mbps (RS422/RS485) | Data, Clock | | Included | SSOP-28 |
| LTC2846 | 3 | 3 | EIA530, EIA530-A, RS232, RS449, V.35, V.36, X.21 | 10Mbps (V.35 Async), 5Mbps (V.35 Sync), 100kbps (RS232/RS562), 10Mbps (RS422/RS485) | Data, Clock | | Included | SSOP-36 |
| LTC2847 | 3 | 3 | EIA530, EIA530-A, RS232, RS449, V.35, V.36, X.21 | 10Mbps (V.35 Async), 5Mbps (V.35 Sync), 100kbps (RS232/RS562), 10Mbps (RS422/RS485) | Data, Clock | | Included | 5x7 QFN-38 |
| LTC2871 | 3 | 3 | RS232, RS485, RS422, RS562 | 500kbps (RS232/RS562), 20Mbps (RS422/RS485) | | | Included | 5x7 QFN-38,TSSOP-38 |
| LTC1322 | 4 | 4 | RS232, RS562, RS422, RS485 | 120kbps (RS232/RS562), 10Mbps (RS422/RS485) | | | | N-24,SW-24 |
| LTC1334 | 4 | 4 | RS232, RS562, RS422, RS485 | 120kbps (RS232/RS562), 5Mbps (RS422/RS485) | | | | NW-28,SSOP-28,SW-28 |
| LTC1335 | 4 | 4 | RS562, RS422, RS485 | 120kbps (RS232/RS562), 10Mbps (RS422/RS485) | | | | N-24,SW-24 |
| LTC1343 | 4 | 4 | EIA530, EIA530-A, RS232, RS449, V.35, V.36, X.21 | 8Mbps (V.35 Async), 4Mbps (V.35 Sync) | Data, Clock or Control | LL, RL, TM | | SSOP-44 |
| LTC1544 | 4 | 4 | EIA530, EIA530-A, RS232, RS449, V.35, V.36, X.21 | 10Mbps (V.35 Async), 5Mbps (V.35 Sync), 100kbps (RS232/RS562), 10Mbps (RS422/RS485) | Control | LL | | SSOP-28 |
| LTC2844 | 4 | 4 | EIA530, EIA530-A, RS232, RS449, V.35, V.36, X.21 | 10Mbps (V.35 Async), 5Mbps (V.35 Sync), 100kbps (RS232/RS562), 10Mbps (RS422/RS485) | Control | LL | | SSOP-28 |
| LTC2872 | 4 | 4 | RS232, RS485, RS422, RS562 | 500kbps (RS232/RS562), 20Mbps (RS422/RS485) | | | Included | 5x7 QFN-38 |
| LTC1545 | 5 | 5 | EIA530, EIA530-A, RS232, RS449, V.35, V.36, X.21 | 10Mbps (V.35 Async), 5Mbps (V.35 Sync), 100kbps (RS232/RS562), 10Mbps (RS422/RS485) | Control | LL, RL, TM | | SSOP-36 |
| LTC2845 | 5 | 5 | EIA530, EIA530-A, RS232, RS449, V.35, V.36, X.21 | 10Mbps (V.35 Async), 5Mbps (V.35 Sync), 100kbps (RS232/RS562), 10Mbps (RS422/RS485) | Control | LL, RL, TM | | 5x7 QFN-38,SSOP-36 |
