XRT79L71IB datasheet(60/441 Pages) EXAR

60 / 441 page

XRT79L71

PRELIMINARY

áç

REV. P1.0.3

1 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC

TABLE 8: DS3 PULSE MASK EQUATIONS

TIME IN UNIT INTERVALS

NORMALIZED AMPLITUDE

LOWER CURVE

-0.85

< T < -0.36

- 0.03

-0.36

< T < 0.36

0.36

< T < 1.4

- 0.03

UPPER CURVE

-0.85

< T < -0.68

0.03

-0.68

< T < 0.36

0.36

< T < 1.4

0.08 + 0.407 x e-1.84[T-0.36]

TABLE 9: DS3 TRANSMITTER LINE SIDE OUTPUT AND RECEIVER LINE SIDE INPUT SPECIFICATIONS (GR-499)

PARAMETER

MIN

TYP

MAX

UNITS

TRANSMITTER LINE SIDE OUTPUT CHARACTERISTICS

Transmit Output Pulse Amplitude

(measured with TxLEV = 0)

0.65

0.75

0.85

Vpk

Transmit Output Pulse Amplitude

(measured with TxLEV = 1)

0.9

1.0

1.1

Vpk

Transmit Output Pulse Width

10.10

11.18

12.28

Transmit Output Pulse Amplitude Ratio

0.9

1.0

1.1

Transmit Intrinsic Jitter ( without Jitter Attenuator in Transmit path)

0.01

0.015

UIpp

Transmit Intrinsic Jitter ( withJitter Attenuator in Transmit path)

0.02

0.04

UIpp

RECEIVER LINE SIDE INPUT CHARACTERISTICS

Receiver Sensitivity (length of cable)

900

1100

feet

Jitter Tolerance @ 400 KHz (Cat II)

0.15

UIpp

Signal Level to Declare Loss of Signal

Refer to Table 10

Signal Level to Clear Loss of Signal

Refer to Table 10

0.5 1

---1

0.18

-----------















sin

0.03

–

0.5 1

---1

0.34

-----------















sin

0.03

XRT79L71IB Datasheet(PDF) 60 Page - Exar Corporation

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