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SN74ABT827: Output pin sinks current when it should be in High-Z state according to TINA-TI

user6345621
Prodigy 20 points
Part Number: SN74ABT827
Other Parts Discussed in Thread: TINA-TI

Hi, I am using two SN74ABT827 ICs which will be called IC1 and IC2 and are supplied with 5V. Output 1 of the IC1 is connected to output 1 of the IC2. Output enable pin of both ICs is controlled independently.

Let's say that output of the IC1 is disabled which means that its outputs are in High-Z state. 

Now I want to enable the IC2 output which means there will be 5V on the output if there are 5V on the input.

When I tried to simulate this in TINA-TI software, it appeard that the output of the IC1 sinked current even though it should be in the high impedance state. Is there something wrong with the simulation model or my understanding of it?