It is easy to distinguish whether an IC has an output-tolerant function.
Let’s look at the datasheets for ICs of the 74VHC and 74LCX Series.
See the bus I/O voltage shown in the Operating Ranges table.
The datasheet of the 74VHC245 shows VIO＝０ to VCC. This means that the output pin is tolerant of only up to VCC. Therefore, the 74VHC245 does not have an output-tolerant function.
In contrast, the datasheet of the 74LCX245 shows VIN＝０to 5.5 V, meaning that up to 5.5 V can be applied to the bus I/O pin regardless of VCC. Therefore, the 74LCX245 has an output-tolerant function.