DS2154 datasheet(81/87 Pages) DALLAS

tên linh kiện	DS2154

Giải thích chi tiết về linh kiện	Enhanced E1 Single Chip Transceiver

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DS2154

81 of 87

AC CHARACTERISTICS -

°C to 70°C; V

DD=5V

±=5% for DS2154L;

TRANSMIT SIDE

-40

°C to +85°C; V

DD=5V

±=5% for DS2154LN)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

TCLK Period

tCP

488

TCLK Pulse Width

tCH

tCL

TCLKI Period

tLP

488

TCLKI Pulse Width

tLH

tLL

TSYSCLK Period

tSP

122

648

448

TSYSCLK Pulse Width

tSH

tSL

TSYNC or TSSYNC Set Up toTCLK or

TSYSCLK falling

tSU

tCH-5 or

tSH-5

TSYNC or TSSYNC Pulse Width

tPW

TSER, TSIG, TDATA, TLINK, TPOSI,

TNEGI Set Up to TCLK, TSYSCLK,

TCLKI Falling

tSU

TSER, TSIG, TDATA, TLINK, TPOSI,

TNEGI Hold from TCLK, TSYSCLK,

TCLKI Falling

tHD

TCLK, TCLKI, or TSYSCLK Rise and

Fall Times

tR, tF

Delay TCLKO to TPOSO, TNEGO

Valid

tDD

Delay TCLK to TESO Valid

tD1

Delay TCLK to TCHBLK, TCHBLK,

TSYNC, TLCLK

tD2

Delay TSYSCLK to TCHCLK,

TCHBLK

tD3

See Figures 14-7 to 14-9 for details.

NOTES:

1. TSYSCLK=1.544 MHz.

2. TSYSCLK=2.048 MHz.

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