ATTL7582AAE PDF VIEW DOWNLOAD, ATTL7582AAE データシート

ATTL7582AAE データシートの表示（PDF） - Agere -> LSI Corporation

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ATTL7582AAE

Tip Ring Access Switch

Agere -> LSI Corporation

ATTL7582AAE Datasheet PDF : 16 Pages

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L7582 Tip Ring Access Switch

Data Sheet

November 1999

Description (continued)

Pin Information

The L7582Bxx version provides only an integrated

diode bridge along with current limiting and thermal

shutdown as shown in Figure 2. This will cause positive

faults to be directed to ground and negative faults to

battery. In either polarity, faults are reduced by the cur-

rent-limit and/or thermal shutdown mechanisms.

To protect the L7582 from an overvoltage fault condi-

tion, use of a secondary protector is required. The sec-

ondary protector must limit the voltage seen at the tip/

ring terminals to prevent the breakdown voltage of the

switches from being exceeded. To minimize stress on

the solid-state contacts, use of a foldback- or crowbar-

type secondary protector is recommended. With proper

choice of secondary protection, a line card using the

L7582 will meet all relevant ITU-T, LSSGR, FCC, or

UL* protection requirements.

The L7582 operates from a 5 V supply only. This

gives the device extremely low idle and active power

dissipation and allows use with virtually any range of

battery voltage. This makes the L7582 especially

appropriate for remote power applications such as

DAML or FOC/FITL or other Bellcore TA 909 applica-

tions where power dissipation is particularly critical.

A battery voltage is also used by the L7582, only as a

reference for the integrated protection circuit. The

L7582 will enter an all OFF state upon loss of battery.

During power ringing, to turn on and maintain the ON

state, the ring access switch will draw a nominal 2 mA

or 4 mA from the ring generator.

The L7582 device is packaged in a 16-pin, plastic DIP

package (L7582AC/BC) and a 16-pin, plastic SOG

package (L7582AAE/BAE). The L7582AAE/BAE are

pin compatible with the L7542AAE/BAE.

*UL is a registered trademark of Underwriters Laboratories, Inc.

FGND 1

TBAT 2

TLINE 3

TRINGING 4

TACCESS 5

SW1

SW3

SW5

VDD 6

TSD 7

DGND 8

SCR

AND

TRIP

CKT

16 VBAT

SW2

SW4

SW6

15 RBAT

14 RLINE

13 RRINGING

12 RACCESS

11 LATCH

10 INRING

9 INACCESS

12-2306.i (F)

Note: Shown with A version protection. The 16-pin SOG is available

with either A or B version protection.

Figure 1. 16-Pin, Plastic SOG