The SN74LVC162244A datasheet states that ‘Output ports have equivalent 26 ohms series resistors, so no external resistors are required’. I’m using the sn74lvc162244a.ibs IBIS model (rev 1.1 - dated 12-17-2004) and getting 600mV undershoot with no series, passes when adding a 33 ohm series by the driver.
Do the sn74lvc162244a.ibs output models include the 26 ohm series?