piclist 1998\01\25\173324a >
Thread: Name that chip! [adjacent topic]
www.piclist.com/techref/microchip/devices.htm?key=pic
picon face BY : Morgan Olsson email (remove spam text)



4069UB=CMOS HEX inverter of series 4000, Unbuffered MAnufactured year 95
Week 33
A very lot of manufacturer make it. For data try Mototrola, Harris,
National etc
Pinning as TTL 7404, Voltage 3-15V typical
One of my favourites.
Often used in analog mode as inverting amplifier: Input voltage via
resistor to inverter input, and another between input and output. Cheap,
simple low-end.
In the named cirquit, replacing the one inverter with two serially
connected inverters instead, makes it an scmitt-trigger. Another use is to
build crystal oscillators. Or RC oscillators, or....

Regards
/Morgan


At 16:19 1998-01-25 -0500, you wrote:
{Quote hidden}

Morgan Olsson, MORGANS REGLERTEKNIK, Sweden, ph: +46 (0)414 70741; fax 70331
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