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MFG:MITEL  Package Cooled:DIP  

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Part Number: MT8940

 

MFG: MITEL

Package Cooled: DIP

 

Description: The MT8940 is a dual digital phase-locked loopproviding the timing and synchronization signals for the T1 or CEPT...


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MT8940 General Description


The MT8940 is a dual digital phase-locked loop providing the timing and synchronization signals for the T1 or CEPT transmission links and the ST-BUS. The first PLL provides the T1 clock (1.544 MHz) synchronized to the input frame pulse at 8 kHz. The timing signals for the CEPT transmission link and the ST-BUS are provided by the second PLL loc-ked to an internal or an external 8 kHz frame pulse signal.

The MT8940 is fabricated in MITEL's ISO-CMOS technology.

MT8940 Maximum Ratings

Parameter Symbol Min Max Units
1 Supply Voltage VDD -0.3 7.0 V
2 Voltage on any pin VI VSS-0.5 VDD+0.5 V
3 Input/Output Diode Current IIK/OK ±10  mA
4 Output Source or Sink Current IO   ±25 mA
5 DC Supply or Ground Current IDD/ISS ±50 mA
6 Storage Temperature TST -65 150 °C
7 Package Power Dissipation PD 600 mW

MT8940 Features

• Provides T1 clock at 1.544 MHz locked to input frame pulse
• Sources CEPT (30+2) Digital Trunk/ST-BUS clock and timing signals locked to internal or external 8 kHz signal
• TTL compatible logic inputs and outputs
• Uncommitted 2-input NAND gate
• Single 5 volt power supply
• Low power ISO-CMOS technology

MT8940 Typical Application

• Synchronization   and   timing   control   for T1 and CEPT digital trunk transmission links
• ST- BUS clock and frame pulse source

MT8940 Connection Diagram

MT8940 Connection Diagram

MT8940 datasheet

MT8940
PDF/DataSheet Download

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