RS-422/RS-485 full-duplex transceiver in a 14-pin DIP
The Maxim Integrated MAX491CPD+ is a single-channel RS-422/RS-485 transceiver that handles full-duplex communication over a single twisted pair or two pairs.
Full duplex — one pair for transmit, one for receive
Full-duplex operation means the driver and receiver are active simultaneously, so the MAX491CPD+ needs two twisted pairs: one for transmit and one for receive. This contrasts with half-duplex RS-485 transceivers that share a single pair and require direction control via a DE/RE pin.
The 14-pin DIP (0.300" body width) is a through-hole package that fits standard pitch sockets or can be soldered directly into plated through-holes. The supplier device package is 14-PDIP.
It is ROHS3 compliant.