Description
The LH1465 ISDN dc Termination IC is used on U-interface digital subscriber lines (U-DSL) and provides a polarity insensitive dc termination for the loop-sealing current and a recognizable signature for mechanized loop testing (MLT) systems. The LH1465 passes dc signaling information to the NT1 circuitry through a 6N139 optoisolator (or equivalent). The LH1465 IC consists of two functional blocks. The first provides the electronic inductor and silicon-controlled rectifier portion of the termination, while the second drives the LED of the 6N139 optoisolator. Inquire about the availability of tape-and-reel packaging for the 16-pin SOG (LH1465AAE).

FEATUREs
■ ANSI U-DSL compatible
■ High linearity
■ MLT compatible
■ SARTS compatible
■ Portable test set compatible