Aufbau/Content: IC (CMOS); Form/Case/Outline: DIP-14 (TP5088N) | ~TSSOP-14 / M14B (TP5088WM); Type/Application: DTMF Generator for Binary Data; Daten/electr.data: Vcc: 3.5 ... 8 V; Icc: 1.5 mA; Pd: <500 mW; t op: -30...+70 °C. Manufactured by NSC - National Semiconductor Corp. USA -