The MAX3040–MAX3045 is a family of 5V quad RS-485/RS-422 transmitters designed for digital data transmission over twisted-pair balanced lines. All transmitter outputs are protected to ±10kV using the Human Body Model. In addition the MAX3040–MAX3045 withstand ±4kV per IEC 1000-4-4 Electrical Fast Transient/Burst Stressing. The MAX3040/MAX3043 (250kbps) and the MAX3041/MAX3044 (2.5Mbps) are slew-rate limited transmitters that minimize EMI and reduce reflections caused by improperly terminated cables, thus allowing error-free transmission. The MAX3040–MAX3045 feature a hot-swap capability that eliminates false transitions on the data cable during power-up or hot insertion. The MAX3042B/MAX3045B are optimized for data transfer rates up to 20Mbps, the MAX3041/MAX3044 for data rates up to 2.5Mbps, and the MAX3040/MAX3043 for data rates up to 250kbps. The MAX3040–MAX3045 offer optimum performance when used with the MAX3093E or MAX3095 5V quad differential line receivers or MAX3094E/MAX3096 3V quad differential line receivers. The MAX3040–MAX3045 are ESD-protected pin-compatible, low-power upgrades to the industry-standard ‘SN75174 and ‘DS26LS31C. They are available in space-saving TSSOP, narrow SO, and wide SO packages.
The MAX3040–MAX3045 family are 5 V quad RS‑485/RS‑422 transmitters designed for digital data transmission over twisted‑pair balanced lines. They feature single‑supply operation, hot‑swap capability, and ESD protection up to ±10 kV Human Body Model.
Key features include slew‑rate‑limited operation for low EMI, data rates ranging from 250 kbps to 20 Mbps depending on the device variant, low‑power shutdown (2 nA), and pin‑compatible upgrades to legacy parts. The devices are offered in space‑saving TSSOP, narrow‑SO, and wide‑SO packages and are suited for telecom, industrial motor control, PLCs, and networking applications.
| Supply Voltage | +5 V ±5 % |
|---|---|
| Maximum Data Rate | 20 Mbps (MAX3042B/MAX3045B) |
| ESD Protection | ±10 kV Human Body Model |
| Operating Supply Current | 1 mA typical |
| Shutdown Mode Current | 2 nA |
They support data rates up to 20 Mbps.
The devices are protected to ±10 kV using the Human Body Model.
They include hot‑swap inputs that prevent false transitions during power‑up or board insertion.