MH89790CEPT/CRC4, MH89791, MH89792-2 Selling Leads, Datasheet
MFG:MFG Package Cooled:PLCC 44 D/C:2005+
MH89790CEPT/CRC4, MH89791, MH89792-2 Datasheet download
Part Number: MH89790CEPT/CRC4
MFG: MFG
Package Cooled: PLCC 44
D/C: 2005+
MH89790CEPT/CRC4, MH89791, MH89792-2
- Table of contents:
Info of MH89790CEPT/CRC4
Info of MH89791
Info of MH89792-2
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About MH80625C
PDF/DataSheet Download
Datasheet: MH80625C
File Size: 35412 KB
Manufacturer: MITEL [Mitel Networks Corporation]
Download : Click here to Download
About MH89791
PDF/DataSheet Download
Datasheet: MH89791
File Size: 122766 KB
Manufacturer: MITEL [Mitel Networks Corporation]
Download : Click here to Download
About MH89792-2
PDF/DataSheet Download
Datasheet: MH89792-2
File Size: 68860 KB
Manufacturer: MITEL [Mitel Networks Corporation]
Download : Click here to Download
MH89791 General Description
The MH89791 is a programmable network for use with a PCM 30 line interface, specifically the MH89790B on The ISDN EXPRESS™ Card. The MH89791 contains transmit equalizer and a 6 dB pad, for external loop around, with 120 input and output impedances. It is fabricated in thick film hybrid technology and is 2 inches high by 0.5 inches wide. The MH89791 is designed to interface to 22 gauge/.6 mm twisted pair. Figure 1 shows how the MH89791 is connected to the transmit side of a PCM 30 interface. The seven switches control the distance settings of the equalizer. Ti, Ri, TL, and RL are the inputs and outputs of the 6 dB pad. The 4 pole double throw relay connected to the transformer inputs and outputs shows how the transmit signal is switched between the equalizer for normal operation,and the 6dB pad for loop around. Figure 2 shows the circuit description of the MH89791 while Figure 3 shows the switch settings for the Tx equalizer.
MH89791 Features
• Used with the MH89790B
• Programmable equalization for different line lengths
• 6dB loop around circuit
• Programmable equalization for different line lengths
• 6dB loop around circuit
MH89791 Connection Diagram
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