(Hong Kong)
Product Summary
The HT3820 is a single-chip 128 note melody generator. The HT3820 implemented in CMOS technology. The HT3820 can play a melody of 128 notes by trigger input or automatically when power is on. Customers’ melody sources are programmed by changing a masking layer during device fabrication.
Parametrics
HT3820 absolute maximum ratings: (1)Supply Voltage: –0.3V to 5.5V; (2)Storage Temperature: –50℃ to 125℃; (3)Input Voltage: VSS–0.3V to VDD+0.3V; (4)Operating Temperature: –20℃ to 75℃.
Features
HT3820 features: (1)Working voltage: 2.4V~5.0V; (2)7 tempo options; (3)2 “CHA” envelopes; (4)Normal or octave higher option; (5)4 operation modes; (6)Extremely few external components; (7)Drive an 8 Ω speaker through an NPN transistor; (8)3-pin TO-92 or 16 DIP/SOP package.
Diagrams
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HT3820 |
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HT3834 |
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HT38A5 |
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