Rainbow Electronics DS21458 - Manual (Page 251)

DS21455/DS21458 Quad T1/E1/J1 Transceivers
251 of 270
37. OPERATING PARAMETERS
ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground……………………………………………..-1.0V to +6.0V
Operating Temperature Range for DS21455/DS21458………………………………………0
°C to +70°C
Operating Temperature Range for DS21455N/DS21458N………………………………...-40 °C to +85°C
Storage Temperature Range……………………………………………………………….-55 °C to +125°C
Soldering Temperature ………………………………………………………..See IPC/JEDEC J-STD-20A
This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation
sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time can affect reliability.
THERMAL CHARACTERISTICS
PARAMETER MIN TYP MAX NOTES
Ambient Temperature -40 °C — +85 °C 1
Junction Temperature — — +125 °C
Theta-JA ( q
JA
) in Still Air for 100-pin LQFP — — 2
Theta-JA ( q
JA
) in Still Air for 10mm
CSBGA pin LQFP
— — 2
NOTES:
1) The package is mounted on a four-layer JEDEC standard test board.
2) Theta-JA ( q
JA
) is the junction-to-ambient thermal resistance, when the package is mounted on a four-
layer JEDEC standard test board.
THETA-JA ( q
JA
) vs. AIRFLOW
FORCED AIR
(meters per second)
THETA-JA ( q
JA
)
100-PIN LQFP
THETA-JA ( q
JA
)
10mm CSBGA
0
1
2.5