MFG:AT&T Package Cooled:DIP
MFG: AT&T
Package Cooled: DIP
Description: The LH1465 ISDN dc Termination IC is used on Uinterface digital subscriber lines (U-DSL) and provides a polarity ins...
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 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).
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device.
These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those indicated in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability.
| Parameter | Symbol | Min | Typ | Max | Unit |
| Ambient Operating Temperature | TA | 40 | - | 85 | °C |
| Storage Temperature | Tstg | 40 | - | 125 | °C |
| Power Dissipation | PD | - | - | 1 | W |
| Pin Soldering Temperature (t = 15 s) | - | - | - | 300 | °C |
Maximum Voltage (T/R, R/T)* |
- | - | - | 300 | Vdc |
* If the SOG package is used, it is recommended to place a drop of RTV (room temperature vulcanizing) compound on the tip and ring pins (pins 3 and 4). This will guard against the possibility of arcing between the pins (which are 0.030 in. apart) under worst-case dust and oil board buildup conditions.
LH1465AB
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