MiKe wrote:
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Hello Mohit!

(snip)

So you may test the following: connect the B side of the driver to the AD0-AD7 pins of the microcontroller and the A side to the memory. Connect DIR to /WR and ALE to /OE. This should work.

(snip)

Yours sincerely, MiKe
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In practice, using a '245 is not that simple. MiKe's suggestion will result in bus contention for brief periods around the ALE and /WR edges.

Generally, you put pullup resistors on both the CPU and peripheral data busses. 10K is a common value.

Usually, the '245 is configured to drive toward the peripheral bus (A side connected to CPU), except during peripheral reads. The timing is tricky. For example, if you tie /RD from the CPU to the both the '245 DIR pin and the peripherals, then you may have a brief period of bus contention on the falling edge of /RD. Depending on the CPU, you might also have a read data hold time violation on the rising edge of /RD.

Inserting a '245 is not to be taken lightly. Make sure you carefully analyze the circuit timing, and watch for bus contention and hold time violations.