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| HT9200A | DTMF generator with serial interface | Holtek Semiconductor Inc. | DIP | 8 | -20°C | 75°C | HT9200A datasheet (282K) |
| HT9200B | DTMF generator with serial/parallel interface | Holtek Semiconductor Inc. | DIP | 14 | -20°C | 75°C | HT9200B datasheet (282K) |
| HT9200B | DTMF generator with serial/parallel interface | Holtek Semiconductor Inc. | SOP | 14 | -20°C | 75°C | HT9200B datasheet (282K) |
| HT9202A | 2-memory tone/pulse dialer | Holtek Semiconductor Inc. | DIP | 18 | -20°C | 75°C | HT9202A datasheet (209K) |
| HT9202B | 2-memory tone/pulse dialer | Holtek Semiconductor Inc. | SDIP | 22 | -20°C | 75°C | HT9202B datasheet (209K) |
| HT9202C | 2-memory tone/pulse dialer | Holtek Semiconductor Inc. | DIP | 20 | -20°C | 75°C | HT9202C datasheet (209K) |
| HT9202D | 2-memory tone/pulse dialer | Holtek Semiconductor Inc. | SDIP | 24 | -20°C | 75°C | HT9202D datasheet (209K) |
| HT9202F | 1-memory tone/pulse dialer | Holtek Semiconductor Inc. | DIP | 18 | -20°C | 75°C | HT9202F datasheet (209K) |
| HT9202G | 1-memory tone/pulse dialer | Holtek Semiconductor Inc. | DIP | 16 | -20°C | 75°C | HT9202G datasheet (209K) |
| HT9202H | 1-memory tone/pulse dialer | Holtek Semiconductor Inc. | DIP | 18 | -20°C | 75°C | HT9202H datasheet (209K) |