Hi all ,

In my project I am using transceiver 74LS243 to grant the serial bus
to 4 slaves .The master issues enable/disable signal for 74LS243 to
communicate with the slave .My problem is that the IC's 74LS243 are
getting heated up though I have combined 3 drivers each for the transmit
line and receive line but still it is getting heated.

1) Is it ok for 74LS243 to get heated so much if not can I use 74S241
octal buffer or some other chip.

2) Please let me know some other chip which could be usefull for
enabling/disabling the serial bus.