HT9200A/HT9200B DTMF Generators Features · Opera.
Holtek Semiconductor Inc
HT9200A - DTMF Generators
HT9200A/HT9200B DTMF Generators Features · Operating voltage: 2.5V~5.5V · Serial mode for the HT9200A · Serial/parallel mode for the HT9200B · Low st.