SN65LBC176A, SN75LBC176A

DIFFERENTIAL BUS TRANSCEIVERS

SLLS376C− MAY 2000 − REVISED DECEMBER 2000

9

POST OFFICE BOX 655303

TYPICAL CHARACTERISTICS

Driver Input

Receiver Output

120

Ω

120

Ω

Receiver Output

Driver Input

Figure 9. Typical Waveform of Non-Return-To-Zero (NRZ), Pseudorandom Binary Sequence (PRBS) Data

at 100 Mbps Through 15m, of CAT 5 Unshielded Twisted Pair (UTP) Cable

TIA/EIA-485-A defines a maximum signaling rate as that in which the transition time of the voltage transition

of a logic-state change remains less than or equal to 30% of the bit length. Transition times of greater length

perform quite well even though they do not meet the standard by definition.