LH1465AAE - LH1465AB/AAE ISDN dc Termination IC Data Sheet Advisory
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.
The LH1465 passes dc signaling information to the NT1 circu
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 AM
