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| FX613DW | Universal call progress decoder | Consumer Microcircuits Limited | N/A | 16 | -30°C | 85°C | FX613DW datasheet (61K) |
| FX613P | Universal call progress decoder | Consumer Microcircuits Limited | DIP | 14 | -30°C | 85°C | FX613P datasheet (61K) |
| FX614D4 | Bell 202 compatible modem | Consumer Microcircuits Limited | N/A | 16 | -40°C | 85°C | FX614D4 datasheet (401K) |
| FX614P3 | Bell 202 compatible modem | Consumer Microcircuits Limited | DIP | 16 | -40°C | 85°C | FX614P3 datasheet (401K) |
| FX619J | Eurocom delta codec | Consumer Microcircuits Limited | DIP | 22 | -40°C | 85°C | FX619J datasheet (91K) |
| FX619L1 | Eurocom delta codec | Consumer Microcircuits Limited | PEBC | 24 | -40°C | 85°C | FX619L1 datasheet (91K) |
| FX619L2 | Eurocom delta codec | Consumer Microcircuits Limited | PLCC | 24 | -40°C | 85°C | FX619L2 datasheet (91K) |
| FX619M1 | Eurocom delta codec | Consumer Microcircuits Limited | CLCC | 28 | -40°C | 85°C | FX619M1 datasheet (91K) |
| FX621LG | Low-power subscriber private metering (SRM) detector | Consumer Microcircuits Limited | PEBC | 24 | -30°C | 70°C | FX621LG datasheet (68K) |
| FX621LS | Low-power subscriber private metering (SRM) detector | Consumer Microcircuits Limited | PLCC | 24 | -30°C | 70°C | FX621LS datasheet (68K) |