DS26521 datasheet(236/258 Pages) MAXIM

236 / 258 page

DS26521 Single T1/E1/J1 Transceiver

236 of 258

11.1

Thermal Characteristics

Table 11-4. Thermal Characteristics

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Ambient Temperature

(Note 1)

-40

+85

°C

Junction Temperature

+125

°C

Theta-JA (

JA) in Still Air for 64-Pin LQFP

(Note 2)

+17.5

°C/W

Note 1:

The package is mounted on a four-layer JEDEC standard test board.

Note 2:

Theta-JA (

JA) is the junction-to-ambient thermal resistance, when the package is mounted on a four-layer JEDEC standard test

board.

11.2

Line Interface Characteristics

Table 11-5. Transmitter Characteristics

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

E1 75

2.13

2.37

2.61

E1 120

2.70

3.00

3.30

T1 100

2.40

3.00

3.60

Output Mark Amplitude

J1 110

2.40

3.00

3.60

Output Zero Amplitude

(Note 1)

-0.3

+0.3

Transmit Amplitude Variation with

Supply

-1

Table 11-6. Receiver Characteristics

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Cable Attenuation

Attn

192

Allowable Zeros Before Loss

(Note 1)

2048

192

Allowable Ones Before Loss

(Note 2)

192

Note 1:

192 zeros for T1 and T1.231 Specification Compliance. 192 zeros for E1 and G.775 Specification Compliance. 2048 zeros for

ETS 300 233 compliance.

Note 2:

24 ones in 192-bit period for T1.231; 192 ones for G.775; 192 ones for ETS 300 233.

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