The IC you speak of is a standard, run-of-the-mill CD4049 CMOS hex inverter
and the 4050 is a standard CMOS hex NON-inverting buffer. The TCP prefix
just means they're made in Japan :-)
Both of these ICs have been around for 30+ years and is fairly "old"
technology. But what the heck, they work fine!
Then again, why use a whole 14 pin dip package device when a single NPN
transistor and 2 resistors will do the same thing? (ok, in the case of the
4050, it takes 2 transistors!)
Ken
At 12:22 PM 12/31/2005 -0800, you wrote:
>>>>
Has anyone used the TC4049BP hex buffer converter chip as an alternative to
open collector NPN transistor COR inverters. I'm curious because we use
such a chip with our RLC-4 controller and it works flawlessly. This chip
has 6 input/outputs with a reference common voltage. There is another chip
which is a buffer and it is ideal when the COR voltage requirement is
higher than can be supplied by the radio COR circuit. The chip number is
TC4050BP. Of course a TC4049BP can be used as a buffer by hooking up 2
input ouputs in series. Here is the pinout: Pin 1 ref voltage up to
20Vcc. Pin 8 Ground ref. Pin 3 input / pin 2 output. Pin 5 input / pin 4
output. Pin 7 input / pin 6 output. Pin 9 input / pin 10 output. Pin 11
input / pin 12 output. Pin 14 input / pin 15 output. Pin 13 and 16 no
connection. Happy new year everyone.
Bruno VE2VK/KD1XG.
VE2RVK voting repeater system.
146.865mhz- 141.3hz.
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