#RS-422 transceivers

[wrrn2rnnr]

https://www.futureelectronics.com/p/semiconductors--signal-interface--rs-485-422/sp485ecn-l-tr-maxlinear-1799436

Data transfer, RS-485 communication, RS-422 transceivers, RS-485 serial bus

SP485E Series 10 Mbps 5 V Enhanced Low EMI Half Duplex RS-485 Transceiver-NSOIC8

[ahy2batts]

Ethernet signal, RS-485 transceiver, RS-422 transceivers, RS-485 communication

SP485E Series 10 Mbps 5 V Enhanced Low EMI Half Duplex RS-485 Transceiver-NSOIC8

[ezbabth2te]

RS-485 transceivers, RS-422 transceivers, Ethernet signal, RS-485 communication

SP485E Series 10 Mbps 5 V Enhanced Low EMI Half Duplex RS-485 Transceiver-NSOIC8

[edw2liams]

https://www.futureelectronics.com/p/semiconductors--signal-interface--rs-485-422/sp485ecn-l-tr-maxlinear-2187927

RS-485 Transceiver, USB to RS-485 Adapters, RS485 /RS-422 Transceiver,

SP485E Series 10 Mbps 5 V Enhanced Low EMI Half Duplex RS-485 Transceiver-NSOIC8

[wliam2tag]

https://www.futureelectronics.com/p/semiconductors--signal-interface--rs-485-422/sp485ecn-l-tr-maxlinear-2187927

RS-485 Transceiver, USB to RS-485 Adapters, RS485 /RS-422 Transceiver,

SP485E Series 10 Mbps 5 V Enhanced Low EMI Half Duplex RS-485 Transceiver-NSOIC8

[brc2nsson]

https://www.futureelectronics.com/p/semiconductors--signal-interface--rs-485-422/sp485ecn-l-tr-maxlinear-1799436

RS 422 485 converter, RS 422 485 USB adapter, RS-422 Transceiver

SP485E Series 10 Mbps 5 V Enhanced Low EMI Half Duplex RS-485 Transceiver-NSOIC8

[jpsjns2s]

https://www.futureelectronics.com/p/semiconductors--signal-interface--rs-485-422/isl83485ibz-t-renesas-8027834

RS 485 Receiver, high-speed data transmission, RS-422 connector types

ISL83485 Series 3.6 V 10 Mbps (-40 to +85°C)RS-485/RS-422 Transceiver - SOIC-8

[phil2yttes]

https://www.futureelectronics.com/p/semiconductors--signal-interface--rs-485-422/sp485ecn-l-tr-maxlinear-1799436

RS -422 connector, rs-422 voltage levels, RS-485/RS-422 Transceiver

SP485E Series 10 Mbps 5 V Enhanced Low EMI Half Duplex RS-485 Transceiver-NSOIC8

[crig2miny]

https://www.futureelectronics.com/p/semiconductors--signal-interface--rs-485-422/sp3077een-l-tr-maxlinear-7064642

Low EMI Half Duplex RS-485 Transceiver, RS 485 cable, rs-422 vs ethernet

SP3077E Series 16 Mbps ±15 kV ESD Protected RS-485/RS-422 Transceiver-NSOIC-8

[plip2urrnss]

https://www.futureelectronics.com/p/semiconductors--signal-interface--rs-485-422/sp485ecn-l-tr-maxlinear-9164721

RS-422/485 usb adapter, RS 485 chips, Low EMI Half Duplex RS-485 Transceiver

SP485E Series 10 Mbps 5 V Enhanced Low EMI Half Duplex RS-485 Transceiver-NSOIC8

[ahy2batts]

Ethernet signal, RS-485 transceiver, RS-422 transceivers, RS-485 communication

SP485E Series 10 Mbps 5 V Enhanced Low EMI Half Duplex RS-485 Transceiver-NSOIC8

[rbrtt2oss]

What is RS-484, 485 cable to usb, RS 485 cable connector, wireless USB

SP485E Series 10 Mbps 5 V Enhanced Low EMI Half Duplex RS-485 Transceiver-NSOIC8

[techav]

The Amputated Franken-Plus

Last year I revived an old Mac Plus that had been destructively robbed for parts over the years. I added sockets for the chips that had been removed, gave it a new power supply, added my SE-VGA card for video, and bodged a few broken traces. But there still remained the most heinously destructive part removal that had been committed against this poor board ...

Long before I had mastery of a soldering iron, and lacking the proper tools for desoldering components successfully, I had a project where I needed n 8-pin mini DIN connector. I had this non-functional Mac Plus board gathering dust so I decided to remove one of its connectors. With a knife. By cutting the board around the connector.

I was young ...

Obviously, there's no repairing that. The board has a permanent chunk removed from it.

However, I find myself wanting to be able to use those serial ports now that I have the rest of the board running. There are lots of fun things to use them for, like LocalTalk networking, printers, zTerm, etc.

So I set out to build a breakout board to add the connectors for these serial ports back to the board. I started by digging up datasheets for the RS-422 & RS-232 transceivers Apple used, as well as schematics for the Plus and similar era Macs so I could trace out how the connectors were originally wired. It turns out all of the signals for both ports are routed to some RC filters in a straight line at the back of the board. This made it fairly easy to solder a ribbon cable to the filter pins on the back side of the board.

I've come to like ribbon cables; they're easy to work with. I can just crimp an IDC connector on one end and attach them to some pin headers. The breakout board itself is just some generic protoboard, and has said pin headers and two female 8-pin mini-DIN connectors.

It's not ideal. The ribbon cable wires are fragile and cold easily be pulled off the motherboard. But hopefully this will restore the last lost functionally for this poor tortured Mac Plus motherboard.

I plan to include the Franken-Plus in my exhibit for VCF Southwest in Richardson, Texas this weekend (23-25 June 2023). If you're in the area, definitely stop by; it's shaping up to be a great show.

[addohaislam2000]

RS-422, Data rate, rs485 pinout, rs-485, rs485 usb converter, supply voltage

SP485E Series 10 Mbps 5 V Enhanced Low EMI Half Duplex RS-485 Transceiver-NSOIC8