The SC 91214A IC is a single chip with silicon gate body structure and CMOS integrated circuit. It consists of oscillator for a 3.58MHZ crystal or ceramic resonator. It performs the function related to pulse dialing (DP) or dual tone multi-frequency (DTMF) dialing. A standard 4 X4 matrix keyboard can be used to support...
Read moreThe SC 91214A IC is a single chip with silicon gate body structure and CMOS integrated circuit. It consists of oscillator for a 3.58MHZ crystal or ceramic resonator. It performs the function related to pulse dialing (DP) or dual tone multi-frequency (DTMF) dialing. A standard 4 X4 matrix keyboard
can be used to support either DP or DTMF modes.
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