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MH88634BT-2 Datasheet(PDF) 1 Page - Mitel Networks Corporation |
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MH88634BT-2 Datasheet(HTML) 1 Page - Mitel Networks Corporation |
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1 / 13 page  2-265 Features • Loop Start Trunk Interface • 600 Ω & 900Ω Input Impedance • 2-4 Wire Conversion • Line state Detection Outputs: • - Forward Loop • - Reverse Loop • - Ringing Voltage • - Switch Hook • One Relay Driver • On-Hook Reception • Small footprint area • Meets FCC Part 68 Leakage Current Requirements Applications Interface to Central Office for: • PABX • Key Telephone Systems • Channel Bank • Voice Mail • Terminal Equipment • Digital Loop Carrier • Optical Multiplexer Description The Mitel MH88634-2 Central Office Interface Circuit trunk provides a complete analogue and signalling link between audio switching equipment and a telephone Line. The device is available in a single in line package for high packing densities or with a lead frame formed at 90 ° for low clearance applications. The device is fabricated as a thick film hybrid incorporating various technologies for optimum circuit design and very high reliability. This part supercedes the MH88634-2 and is pin for pin compatible. We advise that the B rev parts are fully tested. However, we do not expect to see changes between MH88634-2 and MH88634BV-2. The component design has been changed to improve the general performance of the part. It is also now capable of operating at a 24V battery. Figure 1 - Functional Block Diagram Status Detection Receive Gain Transmit Gain 2 - 4 Wire Hybrid Dummy Ringer Line Termination Loop Relay Driver Impedance Matching Network Balance XLA XLB XLC XLD LRC LRD VRLY RING TIP RV VCC RX TX VEE AGND FL RL SHK DS5061 ISSUE 6 January 1999 Ordering Information MH88634BV-2 21 Pin SIL Package MH88634BT-2 21 Pin 90 ° L/F Package MH88634BV-4 21 Pin SIL Package 0 °C to 70°C MH88634B Central Office Interface Circuit Advance Information |
Similar Part No. - MH88634BT-2 |
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