YTD428 데이터 시트보기 (PDF) - Yamaha Corporation

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YTD428

IDSU ISDN DSU for Terminal Equipment

Yamaha Corporation 

REFERENCE CIRCUIT

- 23 -

REFERENCE CIRCUIT

The reference circuit using YTD428 is shown as bellow.

1S953 12

YTD428

R(1%)

LO1

1µ

1µ

R(1%)

8.2k

LO2

LI1

A1

UDM1

UDP1 2SJ278

TDK

NL322522T-3R3J

A1

2SJ278

LI2

8.2k

8(1%)

8(1%)

RA

100

RB

TA

A2

0.1µ

33k

22µ

0.1µ

1M

LICT

RX

CX1

CX2

100

TB

Varistor 6

A2

10k

NTSEL

FG

I.430 TTL Interface

YTD418 or YTD423

HRD

LRD

HTD

LTD

D

HRD

LRD

HTD

LTD

UDP0

2SK2315

UDM0

2SK2315

A1

A1

0.01µ(10%) 6

1

15(1W)

L2

560(1%)

RXU2

RXU1

560(1%)

SGA

RXS

SGB

SGBP

SGR

RUC

VRB

VRT

5

2

KP15N14

1.8k(1%)

8

1.8k(1%)

7

3

1µ/160V

4

15(1W)

TDK

VRYA15

TRTEPC9.8-0319C

KP4N12

0.0047µ(10%)

0.0022µ(10%)

0.015µ(10%)

0.15µ(10%)

0.33µ(10%)

0.1µ

0.1µ

0.1µ

Line activation

circuit

FG

L1

KP15N14

FG

A1

CLK1536

RESET

Line activation

circuit

10k

10k

10k

10k

10k

10k 11

10k 5

10k 3

10k

CLK1536

RESET

REV

TDP

RDP

ODSEL

TSMPSEL

MULTI

EXID

CLKSEL

ATEO

TEST0,2-9,21,22

TEST1,16-19

TEST10,11,24

TEST28

LPSW

LOOP2A

CLK200

CLK400

CLK4K

CLK192K

CLK256K

SXA

TEST20

AVDD2

AVSS2

AVDD1

Line activation

circuit

1u

A2

1u

AVSS1

POWMON

LOCAL

A1

LPSEL

TSMPAUT

DVDD

ATEI

1u

TEST12 - 15

TEST23, 25-27

DVSS

D

D

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