I am not getting any output from the 4-16 line decoder (MC14514) when the 4-bit counter (74HC163) is connected, although the counter is working. When the inputs to the decoder are hardwired to the 5V/0V rail, the respective output pin goes high so the chip itself is fine. I didn't worry about compatibility because both are CMOS.
One more thing...does anyone know of a TTL 4-16 line decoder with non-inverting outputs?
Thanks for your reply. I found out what the problem was...the LED's I had connected to see the output of the counter used too much voltage and the decoder was left out!