Thank you for your information, Clemens,
Not sure if there is 1 channel or 2 channel version for this -55 to 125 deg. C rated CD74HCT125 device or not? Thanks.
yenwu lo
Arthur ,
There are various quad buffer gates you could consider like the sn74AHCT125 which operates at 5v and TTL input compatible.(Vih =2V).
also , CD74HCT125 is another option.