Telephone decoder (CB10151E)

This circuit was obtained in an 80s documentation on telephony. The components used are TTL, and the power must be made with 5 V.

| Clique na imagem para ampliar |

Receiver for echo sounder (CB22357E)
Found in old documentation, this circuit is the receiver for the previous circuit. Components are...
XTAL Low Frequency Stable Oscillator (CB14152E)
We found this circuit in the 1994 Linear Applications Handbook by National Semiconductor. The...
8-Channel Switch (CB24698E)
This circuit switches the capacitors of a digital filter with the 4046 IC (PLL). The circuit was...