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m o HFD3020 .c U 4 t e e h S a at .D w w w
TTL Output Receiver
FEATURES • Converts fiber optic input signals to TTL digital outputs • • • • • • Typical sensitivity 500 nW peak (-33 dBm) Single 5 V supply requirement Edge detection circuitry gives 20 dB minimum dynamic range, low Pulse Width Distortion Operates up to 10 Mbps NRZ Plastic cap with TO-18 header Available in metal package (HFD3000) DESCRIPTION The HFD3020 is a sensitive differentiating optical receiver designed for use in short distance, 850 nm fiber optic systems. The receiver uses a hybrid construction consisting of a PIN photodiode, bipolar integrated receiver circuit with internal voltage regulation and external bypass capacitor. The TTL output allows the HFD3020 to be interfaced directly with standard TTL circuits.