Modern part to power on reset a Z80 ?

[jamma-plusser]

I need to make up a reset circuit to reset, on power on, a Z80 (old
40-pin DIP type) and a few TTLs. I don't want to make up some circuit
using TTLs and resistors, caps, etc, I simply want to buy an off the
shelf part which ONLY requires +5 volts, GND and a wire to connect it
to the reset line on my PCB. I don't want to have to wire up other
parts to it to get it to work.

Does such a modern part exist?

Thanks

 

[Hal Murray]

In article <4a21b317.131944687@news.zen.co.uk>,
jamma-plusser@hotmail.com (jamma-plusser) writes:

I need to make up a reset circuit to reset, on power on, a Z80 (old
40-pin DIP type) and a few TTLs. I don't want to make up some circuit
using TTLs and resistors, caps, etc, I simply want to buy an off the
shelf part which ONLY requires +5 volts, GND and a wire to connect it
to the reset line on my PCB. I don't want to have to wire up other
parts to it to get it to work.

Does such a modern part exist?

Yes, there are many of them. Some may require a pair of resistors
to set the voltage.

For example, go to ti.com
On the left column, click the Power Managment link
then click
Supervisory Circuits(Voltage Supervisors) (237)
(it's about half way down the page)

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