Apple Computer LocalTalk Bus



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Different Apple computer or Macintosh computer Apple-Talk pin-outs are listed below. The pinout tables are all for 8 pin circular mini-DIN connectors used for the Apple-Talk protocol. A short description may be provided along with the pinouts. Each pinout table indicates which computer, printer or device the pinouts are used with. How ever, no electrical standards or cabling information is provided. The LocalTalk interface operates up to 230kbps using the AppleTalk protocol. The EtherNet interface replaced the Localtalk interface, offering higher networking speed and a standard connector. The LocalTalk interface is Obsolete and should not be used for new designs.

Additional pin out tables for other Apple protocols are listed on the Apple Computer Buses page.
A full list of buses found on any computer type is listed on the Personal Computer Buses page.
Here is a link to Connector Manufacturers, or Cable manufacturers, and a list of Cable Assemblies manufacturers.

Mini DIN Connector

8-Pin Mini DIN Local Talk Pinout

The Apple Computer Local Talk Pinout and Signal names on a circular 8-Pin Mini-DIN connector.
Used on LaserWriter 12/600
Used on LaserWriter Select 360
Used on LaserWriter 16/600 PS Printer
Used on LaserWriter 4/600 PS Printer

8 Pin Mini-DIN Connector
Pin Name Description
1 NC Not Connected
2 NC Not Connected
3 /TXD Transmit Data (Inverted}
4 GND Ground
5 /RXD Receive Data (inverted)
6 TXD Transmit Data
7 NC Not Connected
8 RXD Receive Data

8-Pin Mini DIN LocalTalk and RS422 Pinout

The Apple Computer Local Talk and RS-422 Pinout and Signal names on a circular 8-Pin Mini-DIN connector.
Used on LaserWriter Pro 600/630
Used on LaserWriter Personal NTR (Pin 7 is NC, No Connect)

8 Pin Mini-DIN Connector
Pin Name Description
1 HSKo Handshake Signal Output
2 HSKi Handshake Signal Input
3 /TXD Transmit Data (Inverted}
4 GND Ground
5 /RXD Receive Data (inverted)
6 TXD Transmit Data
7 GPi General Purpose Input
8 RXD Receive Data

8-Pin Mini DIN LocalTalk Pinout

The Apple Computer LocalTalk Pinout and Signal names on a circular 8-Pin Mini-DIN connector.
Used on LaserWriter 12/640 PS Printer

8 Pin Mini-DIN Connector
Pin Name Description
1 SERV_IN Service IN
2 SERV_OUT Service Out
3 /TXD Transmit Data (Inverted}
4 GND Chassis Ground
5 RXD Receive Data
6 TXD Transmit Data
7 /RXD Receive Data (Inverted)
8 CGND Chassis Ground

Checking the current Mac mini offering from Apple shows the following interfaces: 120 volt Power, a 10/100 BASE-T Ethernet interface on a RJ-45, a Modem interface on a RJ-11, a DVI/VGA video connector, two USB connectors, a FireWire 400 connector, and an Audio connector {2006}. It's evident that the AppleTalk interfaces on this page are no longer used in new product design by Apple.

Engineering Key words: Apple, Macintosh, MAC, ImageWriter, LaserWriter, AppleTalk, AppleLine, Computer Buses, Connector Pin-Outs, Standard, Interface Standard, Specification, Spec, Physical Interface, Description, Personal Computer Interface, Peripheral, Printer Interface, Obsolete, Legacy, Out-Dated, Up-Grade Path.


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Last Modified 2/16/08
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