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MH88422-3 Datasheet(PDF) 1 Page - Mitel Networks Corporation |
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MH88422-3 Datasheet(HTML) 1 Page - Mitel Networks Corporation |
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1 / 14 page  2-13 Features • FAX and Modem interface (V29) • Variants available with different line impedances • Provides reinforced barrier to international PTT requirements • Transformerless 2-4 Wire conversion. • Integral Loop Switch • Dial Pulse and DTMF operation • Line state detection outputs • Loop current/ringing outputs • Single +5V operation, low on-hook power (5mW) • Full duplex data transmission Applications Interface to Central Office or PABX line for: • Modem •FAX • Telemetry Description The Mitel MH88422 Data Access Arrangement (D.A.A.) provides a complete interface between data transmission equipment and a telephone line. All functions are integrated into a single thick film hybrid module which provides high voltage isolation, very high reliability and optimum circuit design needing a minimum of external components. A number of variants are available to meet particular country impedance requirements. The D.A.A. has been designed to meet regulatory approvals requirements in these countries. Figure 1 - Functional Block Diagram Opto- Isolation Logic Input Buffer Opto- Isolation Opto- Isolation Opto- Isolation Audio Buffer Audio Buffer Buffer Transhybrid loss cancellation circuit Isolation Barrier VDD AGND LC VR VX RVLC TIP RING User Connections Network Connections Input Buffer & TXIN TF RLS Ring & Loop Line Termination DS5067 ISSUE 10 November 1998 Ordering Informations MH88422-1/2/3 26 Pin DIL Package MH88422BD-1 26 Pin DIL Package 0 °C to 70°C MH88422 Data Access Arrangement Preliminary Information |
Similar Part No. - MH88422-3 |
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Similar Description - MH88422-3 |
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