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MH88524 Dataheets PDF



Part Number MH88524
Manufacturers Mitel Networks
Logo Mitel Networks
Description Dual 2-4 Wire Circuit Preliminary Information
Datasheet MH88524 DatasheetMH88524 Datasheet (PDF)

MH88524 ® Dual 2-4 Wire Circuit Preliminary Information Features • • • • • • Full duplex operation Two complete circuits per package Transformerless 2-4 Wire (4-2 Wire) conversion + 5V operation Wide bandwidth (50kHz) Small Package Size MH88524 ISSUE 4 April 1995 Ordering Information 10 Pin SIL Package 0° C to 70° C Description The Mitel MH88524 (Dual 2-4 wire Circuit) provides two independent interfaces between4-Wire devices such as the MH88631 COIC (Central Office Interface CIrcuit) and .

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MH88524 ® Dual 2-4 Wire Circuit Preliminary Information Features • • • • • • Full duplex operation Two complete circuits per package Transformerless 2-4 Wire (4-2 Wire) conversion + 5V operation Wide bandwidth (50kHz) Small Package Size MH88524 ISSUE 4 April 1995 Ordering Information 10 Pin SIL Package 0° C to 70° C Description The Mitel MH88524 (Dual 2-4 wire Circuit) provides two independent interfaces between4-Wire devices such as the MH88631 COIC (Central Office Interface CIrcuit) and a speech switch such as the MT8814 (Analog Switch Array), requiring only a single bidirectional switch per crosspoint. The MH88524 can accommodate two full duplex audio links. The device is fabricated as a thick film hybrid which incorporates various technologies for optimum circuit design and very high reliability. Applications 4-2 Wire and 2-4 Wire conversion for: • • • • • • • • • MH88630/631, MH88632, MH88500 & MT8840 PBX Key Telephone System Channel bank Voice Mail Terminal Equipment Digital Loop Carrier Modem Intercom RX1 Receive Gain Circuit1 2-4 Wire Circuit 1 JUN1 TX1 Transmit Gain Circuit 1 RX2 Receive Gain Circuit 2 2-4 Wire Circuit 2 JUN2 TX2 Transmit Gain Circuit 2 VDD VEE AGND Figure 1 - Functional Block Diagram 2-73 MH88524 Preliminary Information RX1 JUN1 TX1 VDD AGND VEE IC TX2 JUN2 RX2 1 2 3 4 5 6 7 8 9 10 Figure 2 - Pin Connections Pin Description Pin # 1 2 3 4 5 6 7 8 9 10 Name RX1 JUN1 TX1 VDD AGND VEE IC TX2 JUN2 RX2 Description Receive 1 (Input). 4-Wire ground (AGND) referenced audio output. Junctor 1 (Transmit and Receive). Ground referenced transmit and receive speech path. Transmit 1. 4-Wire ground (AGND) referenced audio output. Positive Supply Voltage. Typically +5V. Analog Ground. 2-Wire and 4-Wire ground. Normally connected to System Ground. Negative Supply Voltage. Typically -5V. Internal Connection. This pin is internally connected. Transmit 2 (Output). 4-Wire ground AGND) referenced audio output. Junctor 2 (Transmit and Receive). Ground referenced transmit and receive speech path. Receive 2 (Input). 4-Wire ground (AGND) referenced audio output. Absolute Maximum Ratings* Parameter 1 2 DC Supply Voltage Storage Temperature Sym VDD VEE TS Min -0.3 +0.3 -55 Max 15 -15 125 Units V V °C Comments With respect LGND * Exceeding these values may cause permanent damage. Functional operation under these conditions is not implied. Recommended Operating Conditions Parameter 1 2 DC Supply Voltage Operating Temperature Sym VDD VEE TOP Typ* 5.0 -5.0 Min 4.75 -4.75 0 Max 10 -10 70 Units V V °C Comments * Typical figures are at 25° C with nominal +5V supplies and are for design aid only. 2-74 Preliminary Information DC Electrical Characteristics ‡ Characteristics 1 2 Supply Current Power Dissipation Sym IDD PEE PC Min Typ* Max 4 4 40 Units mA mW MH88524 Test Conditions VDD = +5.0 VEE = 5.0 VDD = +5.0 VEE = 5.0 ‡ DC Electrical Characteristics are over recommended operating conditions unless otherwise stated. * Typ.


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