Datasheet > HC-5509B

HC-5509B

更新时间： 2024-01-17 12:35:48

品牌	Logo	应用领域
英特矽尔 - INTERSIL		/
页数	文件大小	规格书
10页	109K
描述
SLIC Subscriber Line Interface Circuit

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HC-5509B 数据手册

HC-5509B3999-003

Pin Descriptions (Continued)

SOIC

SYMBOL

PRI

DESCRIPTION

A TTL compatible input used to control PR. PRI active High = PR active low.

An active low open collector output. Can be used to drive a Polarity Reversal Relay.

Digital Ground - To be connected to zero potential. Serves as a reference for all digital inputs and outputs on

the SLIC.

Ring Relay Driver - An active low open collector output. Used to drive a relay that switches ringing signals onto

the 2-Wire line.

VFB

Feedback input to the tip feed amplifier; may be used in conjunction with transmit output signal and the spare

op amp to accommodate 2-Wire line impedance matching.

Tip Feed - A low impedance analog output connected to the TIP terminal through a feed resistor. Functions

with the RF terminal to provide loop current, and to feed voice signals to the telephone set and to sink longitu-

dinal currents. Must be tied to TF .

Tie directly to TF in the PLCC application.

Ring Feed - A low impedance analog output connected to the RING terminal through a feed resistor. Functions

with the TF terminal to provide loop current, feed voice signals to the telephone set, and to sink longitudinal

currents. Tie directly to RF .

Tie directly to RF in the PLCC application.

VB-

The battery voltage source. The most negative supply.

Battery Ground - To be connected to zero potential. All loop current and some quiescent current flows into this

ground terminal.

No internal connection.

NOTE:

1. All grounds (AG, BG, DG) must be applied before V or V . Failure to do so may result in premature failure of the part. If a user wishes

B+ B-

to run separate grounds off a line card, the AG must be applied ﬁrst.

1...3 4 567 8 9 10

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HC5509B3	ETC	获取价格	Telecommunication IC
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