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LH1465AAE - LH1465AB/AAE ISDN dc Termination IC Data Sheet Advisory

General Description

The LH1465 ISDN dc Termination IC is used on Uinterface 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.

Key Features

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Datasheet Details

Part number LH1465AAE
Manufacturer Agere Systems
File Size 375.48 KB
Description LH1465AB/AAE ISDN dc Termination IC Data Sheet Advisory
Datasheet download datasheet LH1465AAE Datasheet

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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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Advisory July 1998 LH1465AB/AAE ISDN dc Termination IC Data Sheet Advisory Application Circuit Replace Figure 11 on page 10 of the LH1465AB/AAE data sheet with the figure shown below. MLT CIRCUIT C15 1.0 µF R11 137 Ω (PLACE THIS CAPACITOR AS CLOSE AS POSSIBLE TO THE LH1465) LH1465AB 8 TC PR+ 7 RS T U3 6 PD R 5 COM PR– R14 1.1 kΩ 2W +5 V R10 10 kΩ 8 6 5 R9 R8 17.8 kΩ SCNT1 OPTOIN PIN U2 R12 137 Ω 2 3 CA 1.0 µF ZD 1 2 3 4 R15 1.1 kΩ 2W RING TIP 7 HCPL-0701 2.2 MΩ FOR NORTH AMERICAN APPLICATIONS ONLY 5-7034(C) Figure 1. MLT Circuit Showing New Placement of Zener Diode (ZD) and Capacitor (CA) In the ILOSS mode (refer to ANSI T1.601 1992, Section 6.5.2), the NT generates a scrambled, framed, 2B1Q signal such as SN1 and SN2.