25 Jan
2011
25 Jan
'11
12:23 p.m.
Philip Pemberton wrote:
I'm planning on replacing the
"recommended" 75157/75158 "dual
differential driver/receiver" pair with a 26LS31/26LS32 quad diff
RX/TX pair on the grounds that:
* The 26LS parts are cheaper by about a factor of 3
* the 26LS parts seem to be easier to find (higher stock levels at
Farnell and Digikey when I last checked).
Anyone reckon I'm likely to have any problems with this substitution?
The spec only requires that the differential drivers and receivers meet
EIA-422 specs (formerly RS-422). The Am26LS31 and Am26LS32 will work,
as would the MC3486 and MC3487 or many other parts. EIA-485
transceivers (e.g., SN751765) can also be used, when configured as
driver only or receiver only.