Im using lsf204 for translator for two applications with tssop package footprint and low power.
Vref_A = 3.3V
Vref_B = 5V.
1) case 1:
A-side has 2 open drain input but the board already have 10K pullups on board and 2 push-pull inputs. This is for low speed interrtupt signal.
3.3V -- 5V
od1_pu ->
od2_pu ->
pushpull1 ->
pushpull2 ->
B-side doesn't have any pullup so look like the level doesn't reach 5V.
would I need add pullup or perhaps change to:
txb104: pushpull is ok, but does open drain work since I have external pullups?
txsb0104: This has builtin pullup so it should work for open drain. it mentions itnshould wirk for pushpull as well.
2) case 2:
serial port 3.3V to 5V push-pull rx, tx,cts, rts.
Again look like for output on 5V side, I need pullup.
3.3V -- 5V
tx ->
rx <-
rts <-
clt ->
in this case perharps txb104 or txsb0104 should work as footprint is the same in tssop package with EN active high.
