The MAX13450E/MAX13451E are half-duplex and full-duplex RS-485/RS-422 transceivers. These devices feature internal 100Ω and 120Ω termination resistors. The devices have strong drivers specified to drive low-impedance lines found when a fully loaded bus, based on today’s 100Ω characteristic impedance cable, is doubly terminated. Both devices allow slew-rate limiting of the driver output to reduce EMI and reflections for data rates up to 500kbps.
The MAX13450E and MAX13451E are half‑duplex and full‑duplex RS‑485/RS‑422 transceivers featuring pin‑selectable 100 Ω or 120 Ω termination resistors, fault‑indication (MAX13451E), and logic‑level inputs down to 1.8 V. They are supplied in a 14‑pin TSSOP package and are rated for automotive temperature ranges.
Key features include a maximum data rate of 500 kbps, up to 256 devices on a bus using 1/8‑unit load, ESD protection up to +30 kV (HBM), and selectable slew‑rate limiting to reduce EMI. The devices operate from a supply voltage of +4.5 V to +5.5 V and are RoHS‑compliant.
| Supply Voltage (VCC) | +4.5 V to +5.5 V |
|---|---|
| Logic Supply Voltage (VL) | 1.62 V to 1.8 V |
| Maximum Data Rate | 500 kbps |
| Package Type | 14‑pin TSSOP |
The devices support data rates up to 500 kbps.
They operate from +4.5 V to +5.5 V.
Yes, the MAX13451E includes a FAULT alarm indication output.