piclist 1998\01\25\181714a >
Thread: Name that chip! [adjacent topic]
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part 0 1170 bytes
Try Phillips/Signetics HEF4069UB  (hex inverter, U stands for unbufffered

From:   John P. Leonard[SMTP:leonardspamEraseMETARDIS.SVSU.EDU]
Sent:   Sunday, January 25, 1998 10:19 PM
To:     .....PICLISTTakeThisOuTspamEraseMEMITVMA.MIT.EDU
Subject:        Name that chip! [adjacent topic]

Hi all,

I need help identifying an IC in a device I'm dissecting.  The device is
a the receiver for an "invisible fence" system for pets:  a buried perimeter
wire emits a signal that is picked up by a small receiver attached to the
pet's collar.  The transmitter and receiver are both PIC-based; the receiver
detects the signal with an IC bearing the following logo and part #:

                /                  /
              /      ____________/
            /______/   _________         9  5  3  3  H
                      /       /
                    /       /
                  /       /            4   0  6  9  U  B

This receiver would work perfectly in a project I'm working on.
Any help on who the manufacturer of the mystery IC would be appreciated.

John Leonard

Midland, MI


See also: www.piclist.com/techref/microchip/devices.htm?key=pic
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