XR-C587

~R XR·C587 I C588 T 1C PCM Repeater Chip Set GENERAL DESCRIPTION The IC pair, XR-C587 and XR-C588, provides all the active circuitry needed to form one side of a Tl C PCM Repeater (3.152 MBits/sec). Each chip is packaged in a 16-Pin CERDIP package, with an operating temperature range of - 40°C to +85°C. The supply voltage range is 6.0 to 6.8 VDC' with a typical supply current for the pair of 16 mAo The XR-C587 contains an amplifier, three AlBO ports, and an npn transistor. The amplifier is a modified version of the amplifier in Exar's XR-C262 Tl repeater chip. This amplifier has its own ground pin for isolation, as well as for eliminating the amplifier current drain if only the XR-C587 AlBO diodes and/or the transistor are used. Each of the three ALBO ports has a separate ground and one common drive input. Any number, up to three, can be used while eliminating current in any not used. The npn transistor is provided for incidental uses. The XR-C588 contains a preamplifier, an A...