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| FX602D4 | Calling line identifier | Consumer Microcircuits Limited | N/A | 16 | -40°C | 85°C | FX602D4 datasheet (1M) |
| FX602P3 | Calling line identifier | Consumer Microcircuits Limited | DIP | 16 | -40°C | 85°C | FX602P3 datasheet (1M) |
| FX604D4 | V23 compatible modem | Consumer Microcircuits Limited | N/A | 16 | -40°C | 85°C | FX604D4 datasheet (405K) |
| FX604P3 | V23 compatible modem | Consumer Microcircuits Limited | DIP | 16 | -40°C | 85°C | FX604P3 datasheet (405K) |
| FX609J | Continuously variable slope delta modulation codec | Consumer Microcircuits Limited | DIP | 22 | -30°C | 85°C | FX609J datasheet (200K) |
| FX609L2 | Continuously variable slope delta modulation codec | Consumer Microcircuits Limited | PLCC | 24 | -40°C | 85°C | FX609L2 datasheet (200K) |
| FX609LG | Continuously variable slope delta modulation codec | Consumer Microcircuits Limited | PEBC | 24 | -40°C | 85°C | FX609LG datasheet (200K) |
| FX611J | Sybscriber private metering (SRM) detector | Consumer Microcircuits Limited | DIP | 16 | -30°C | 85°C | FX611J datasheet (280K) |
| FX611LG | Sybscriber private metering (SRM) detector | Consumer Microcircuits Limited | PLCC | 24 | -30°C | 70°C | FX611LG datasheet (280K) |
| FX611LS | Sybscriber private metering (SRM) detector | Consumer Microcircuits Limited | PLCC | 24 | -30°C | 70°C | FX611LS datasheet (280K) |