Difference between revisions of "V.24 Level Shifter Board"
Jump to navigation
Jump to search
(Created page with "Category:Quantar This is a page about the v.24 level converter I made to be fully drop in replacement for the OEM board.") |
|||
| (3 intermediate revisions by the same user not shown) | |||
| Line 2: | Line 2: | ||
This is a page about the v.24 level converter I made to be fully drop in replacement for the OEM board. | This is a page about the v.24 level converter I made to be fully drop in replacement for the OEM board. | ||
| + | |||
| + | = Features = | ||
| + | |||
| + | * '''Full OEM Compatibility''' - This will work in place of the OEM board | ||
| + | ** Includes a relay so that the station can originate clock _OR_ be clocked by DCE. | ||
| + | * Simple design - Affordable and easy to assemble, only one IC | ||
| + | * The following can be done via dip switch at the RS232 level | ||
| + | ** CD asserted and tied to MARK or SPACE | ||
| + | ** Tie TXCLK and RXCLK together - this allows a station to connect to another which is set to not send TX clock | ||
| + | ** Tie CTS and RTS together - needed in some cases for certain v24 to DCE connections | ||
| + | * Built in cross over port to connect two stations directly without needing a crossover adapter. | ||
| + | * Internally ESD (15kv) protected design - meets or exceeds the OEM v.24 daughter card or other designs based on the MC145406 | ||
| + | * Fits in the front or back ports of the Wireline board without contacting or putting pressure on other compntes on the wireline board. | ||
| + | * Not a Graham Cracker. | ||
| + | |||
| + | |||
| + | Tested with TRN7477, TRN7667, CLN6955, CLN6956 and CLN7343 wireline boards. | ||
| + | |||
| + | = Background info = | ||
| + | |||
| + | https://www.ti.com/lit/an/slla544/slla544.pdf | ||
| + | |||
| + | https://www.analog.com/en/resources/technical-articles/fundamentals-of-rs232-serial-communications.html | ||
| + | |||
| + | https://www.analog.com/en/products/max3185.html | ||
| + | |||
| + | https://www.analog.com/media/en/technical-documentation/data-sheets/MAX3185.pdf | ||
| + | |||
| + | good: | ||
| + | |||
| + | https://electronics.stackexchange.com/a/649122 | ||
| + | |||
| + | https://www.ti.com/lit/ds/symlink/tl145406.pdf | ||
Revision as of 23:42, 11 May 2024
This is a page about the v.24 level converter I made to be fully drop in replacement for the OEM board.
Features
- Full OEM Compatibility - This will work in place of the OEM board
- Includes a relay so that the station can originate clock _OR_ be clocked by DCE.
- Simple design - Affordable and easy to assemble, only one IC
- The following can be done via dip switch at the RS232 level
- CD asserted and tied to MARK or SPACE
- Tie TXCLK and RXCLK together - this allows a station to connect to another which is set to not send TX clock
- Tie CTS and RTS together - needed in some cases for certain v24 to DCE connections
- Built in cross over port to connect two stations directly without needing a crossover adapter.
- Internally ESD (15kv) protected design - meets or exceeds the OEM v.24 daughter card or other designs based on the MC145406
- Fits in the front or back ports of the Wireline board without contacting or putting pressure on other compntes on the wireline board.
- Not a Graham Cracker.
Tested with TRN7477, TRN7667, CLN6955, CLN6956 and CLN7343 wireline boards.
Background info
https://www.ti.com/lit/an/slla544/slla544.pdf
https://www.analog.com/en/products/max3185.html
https://www.analog.com/media/en/technical-documentation/data-sheets/MAX3185.pdf
good:
