I bought a 74141 on Ebay and I had a bit of trouble with the delivery but
it arrived eventually so I'm trying to test it on the breadboard.
I've hooked up LEDs from +ve to all the outputs and pulled the 4 address
lines down to ground with 100k
When I power it up 6 of the LEDS are on and
74xx TTL devices have a rather high input-low current, on the order of 1mA,
so you should use a much smaller pulldown resistor, say 100 ohms, or
perhaps none at all. Logically, it should not be possible for more than 1
output to get driven low on the 7441, but that only applies if all
Thanks,
I'll give those suggestions a go.
On Tuesday, 26 September 2023 at 16:05:17 UTC+1 gregebert wrote:
> 74xx TTL devices have a rather high input-low current, on the order of
> 1mA, so you should use a much smaller pulldown resistor, say 100 ohms, or
> perhaps none at all. Logically, it
