LXT386LE datasheet(55/78 Pages) INTEL

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QUAD T1/E1/J1 Transceiver — LXT386

Datasheet

Input leakage current

Iil

-10

+10

µA

Tri state leakage current

Ihz

-10

+10

µA

Tri state output current

Ihz

––

µA

TTIP, TRING

Line short circuit current

––

–

RMS

2 x 11

Ω series

resistors and 1:2

transformer

Input Leakage (TMS, TDI, TRST)

––

–

µA

Table 37. E1 Transmit Transmission Characteristics

Parameter

Sym

Min

Typ

Max

Unit

Test Condition

Output pulse

amplitude

Ω

120

Ω

–

2.14

2.7

2.37

3.0

2.60

3.3

Tested at the line side

Peak voltage of a

space

Ω

120

Ω

–

-0.237

-0.3

0.237

0.3

Transmit amplitude variation with supply

–

-1

Difference between pulse sequences

–

200

For 17 consecutive pulses

Pulse width ratio of the positive and negative

pulses

–

0.95

1.05

At the nominal half

amplitude

Transmit transformer turns ratio for

75/120

Ω characteristic impedance

–

1:2

Rt = 11

Ω ± 1%

Transmit return

loss 75

Ω coaxial

cable1

51kHz to 102 kHz

102 kHz to 2.048 MHz

2.048 MHz to 3.072 MHz

–

Using components in the

LXD384 evaluation board.

Transmit return

loss 120

Ω twisted

pair cable1

51kHz to 102 kHz

102 kHz to 2.048 MHz

2.048 MHz to 3.072 MHz

–

Using components in the

LXD384 evaluation board.

Transmit intrinsic jitter; 20Hz to 100kHz

––

0.030

0.050

U.I.

Tx path TCLK is jitter free

Transmit path delay

Bipolar mode

U.I.

JA Disabled

Unipolar mode

U.I.

1. Guaranteed by design and other correlation methods.

Table 38. E1 Receive Transmission Characteristics

Parameter

Sym

Min

Typ

Max

Unit

Test Condition

Permissible cable attenuation

–––

@1024 kHz

Receiver dynamic range

0.5

––

Signal to noise interference margin

S/I

-15

––

Per G.703, O.151 @ 6 dB

cable Attenuation

1. Guaranteed by design and other correlation methods.

Table 36. DC Characteristics (Continued)

Parameter

Sym

Min

Typ

Max

Unit

Test Condition

1. Output drivers will output CMOS logic levels into CMOS loads.

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