19 Sep
2013
19 Sep
'13
5:53 a.m.
Am 18.09.2013 19:51, schrieb Steve Lafferty:
Hi Pete,
Unicornelectronics.com, 7439 at $1.49 (min order $25, though, but the
also have some other goodies as well)
--
Holger
Anyone got practical experience of substituting
for an 8881?
--- The SN7439 is commonly taken as a proper replacement for the
DEC8881. I see a couple 7439's available on eBay at the moment. Also, questcomp.com is
showing DEC8881 in stock at $10 each at quantity-two. Some have mentioned substituting
7438 as a lower spec version. I see from the datasheet that it does have the same
schematic as the 7439. However, it doesn't actually guarantee more than 16mA output
sink current.