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XR-C277 - Low-Voltage PCM Repeater

Description

The XR-C277 is a monolithic repeater circuit for PulseCode Modulated (PCM) telephone systems.

It is designed to operate as a regenerative repeater at 1.544 Megabits per second (Mbps) data rate on T1-type PCM lines.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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XR-C277 Low-Voltage PCM Repeater GENERAL DESCRIPTION The XR-C277 is a monolithic repeater circuit for PulseCode Modulated (PCM) telephone systems. It is designed to operate as a regenerative repeater at 1.544 Megabits per second (Mbps) data rate on T1-type PCM lines. It is packaged in a hermetic 16-Pin CERDIP package and is designed to operate over a temperature range of -40°C to +85°C. It contains all the basic functional blocks of a regenerative repeater system, including Automatic Line Build-Out (ALBO) and equalization, and is insensitive to reflections caused by cable discontinuities. The key feature of the XR-C277 is its ability to operate with low supply voltage (6.3 volts and 4.3 volts) with a supply current of less than 13 mA.
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