The SN55LBC172 is a monolithic quadruple differential line driver with 3-state outputs. This device is designed to meet the requirements of the Electronics Industry Association (EIA) standard RS-485. The SN55LBC172 is optimized for balanced multipoint bus transmission at data rates up to and exceeding 10 million bits per second. The driver features wide positive and negative common-mode output voltage ranges, current limiting, and thermal-shutdown circuitry, making it suitable for party-line applications in noisy environments. The device is designed using the LinBiCMOS™ process, facilitating ultralow power consumption and inherent robustness.
The SN55LBC172 provides positive- and negative-current limiting and thermal shutdown for protection from line fault conditions on the transmission bus line. This device offers optimum performance when used with the SN55LBC173M quadruple line receiver.
LinBiCMOS is a trademark of Texas Instruments Incorporated.
| Number of receivers | 0 |
| Number of transmitters | 4 |
| Supply voltage (nom) (V) | 5 |
| Signaling rate (max) (MBits) | 10 |
| Fault protection (V) | -10 to 15 |
| Common-mode range (V) | -7 to 12 |
| Number of nodes | 32 |
| Isolated | No |
| Supply current (max) (µA) | 7000 |
| Rating | Military |
| Operating temperature range (°C) | -55 to 125 |
| CDIP (J) | 16 | 135.3552 mm² 19.56 x 6.92 |
| CFP (W) | 16 | 69.319 mm² 10.3 x 6.73 |
| LCCC (FK) | 20 | 79.0321 mm² 8.89 x 8.89 |
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