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參數(shù)資料
| 型號： | LH1465AB |
| 廠商： | Lineage Power |
| 英文描述： | ISDN dc Termination IC(ISDN 終端芯片) |
| 中文描述： | 綜合業(yè)務(wù)數(shù)字網(wǎng)直流終止集成電路（綜合業(yè)務(wù)數(shù)字網(wǎng)終端芯片） |
| 文件頁數(shù)： | 3/14頁 |
| 文件大小： | 375K |
| 代理商： | LH1465AB |
Data Sheet
February 1998
LH1465AB/AAE ISDN dc Termination IC
Features
I
ANSI U-DSL compatible
I
High linearity
I
MLT compatible
I
SARTS compatible
I
Portable test set compatible
Description
The LH1465 ISDN dc Termination IC is used on U-
interface digital subscriber lines (U-DSL) and pro-
vides 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).
Device Code
LH1465AB
LH1465AAE
Package Type
8-Pin, Plastic DIP
16-Pin, Plastic SOG
12-1947(F)
Figure 1. Functional Diagram/8-Pin DIP
1
2
3
4
5
6
7
8
PD1
6N139
8
1
μ
F
15 V, 10%
7
4
2.2 k
4 W, 5%
68
1/4 W, 1%
5
1
6
3
2
POLARITY
GUARD
OPTOISOLATOR
DRIVER
ELECTRONIC INDUCTOR,
BREAKOVER, AND
LATCH CIRCUITS
CURRENT LIMIT AND EXCESS
POWER PROTECTION
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