L8576B 데이터 시트보기 (PDF) - Agere -> LSI Corporation

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L8576B

Dual Ringing SLIC

Agere -> LSI Corporation 

Data Sheet

May 2001

Pin Information

L8576B Dual Ringing SLIC

NSTATb

NDISCb

RPWRb

PTb

PRb

VITRb

TG2b

TG1b

RTFLTb

RTTHb

DCOUTb

6 5 4 3 2 1 44 43 42 41 40

7

39

8

38

9

37

10

36

11

35

12

34

13

33

14

32

15

31

16

30

17

29

18 19 20 21 22 23 24 25 26 27 28

NSTATa

NDISCa

RPWRa

PTa

PRa

VITRa

TG2a

TG1a

RTFLTa

RTTHa

DCOUTa

Figure 3. 44-Pin PLCC Pin Diagram

12-3361(F).a

Table 1. Pin Descriptions

Pin, Pin,

Circuit Circuit Symbol Type

a

b

Name/Function

1

1

VBAT* — Office Battery Supply. Negative high-voltage power supply, nominally –65 V.

44

2

CF2 — Filter Capacitor 2. Connect 0.22 µF capacitor to AGND.

43

3

CF1 — Filter Capacitor 1. Connect 0.22 µF capacitor to AGND.

42

4 BGND* — Battery Ground. Ground return for the battery supply and fault ground.

41

5

B2

Iu State Input. Refer to Operating States section. A pull-up device is included.

* On the printed-wiring board (PWB), make the leads to BGND and VBAT as wide as possible for thermal and electrical reasons. Also, maxi-

mize the amount of PWB copper on all leads connected to this device for the lowest operating temperature.

Note: Iu and Ou indicate a pull-up device is included on this lead.

Agere Systems Inc.

5

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