TUSTIN, Calif. -- TDK Semiconductor Corp. here has expanded its family of line interface transceivers for E3, DS3, STS-1 and ATM applications with new products that offer 3.3- or 5-volt operation capability
The new 78P7200L, a single-channel T3/E3 line interface unit (LIU), has a typical power dissipation of 230 milliwatts at 3.3 V. Other new enhancements include loop-back and clockpolarity selection, and the device pin and functionally compatible to the 78P7200 and the recently introduced 78P2241.
The 78P7200L is a single-chip IC featuring a proprietary clock recovery and transmitter pulse-shaping function for applications using 75-ohm coaxial cable at distances up to 1,100 feet. The receiver recovers clock and positive data and negative data from an AMI signal. It can compensate for over 12 dB of cable and 6 dB of flat loss. The transmitter generates a signal that meets the standard pulse shape requirements.
According to Andy Mills, vice president and general manager of the company's network business unit, "This new device, which is being manufactured in an advanced BiCMOS process, gives the designer the flexibility of 5 V or 3.3 V, with lower power consumption. The primary product applications include DSLAMs, T3/E3 digital multiplexers, Sonet add/drop multiplexers, PDH equipment, DS3 to Fiber optic and microwave modems, and ATM WAN access for routers and switches."
The 78P7200L is available in 28-lead PLCC and 48-lead TQFP packages. It is compatible to both the 78P7200 (28-lead PLCC). The device is available off-the-shelf for $28.33 at volumes of 10,000 pieces.