am79r251 Advanced Micro Devices, am79r251 Datasheet - Page 15

• Manufacturer Part Number: am79r251
• Description: Intelligent Subscriber Line Interface Circuit Islic
• Manufacturer: Advanced Micro Devices

Thermal Resistance
Absolute Maximum Ratings
Operating Ranges
Environmental Ranges
The junction to air thermal resistance of the Am79R251 in a 32-pin, PLCC package is 45°C/W. The
typical junction to case thermal resistance is 14°C/W. Measured under free air convection conditions
and without external heatsinking.
Operating ranges define those limits between which device functionality is guaranteed. Functionality
of the device from 0°C to 70°C is guaranteed by production testing. Performance from –40°C to
85°C is guaranteed by characterization and periodic sampling of production units.
Storage Temperature
Ambient temperature, under bias
Humidity
VCC with respect to GND
VBH, VBL with respect to GND
VBP with respect to GND
VBP with respect to VBH
BGND with respect to GND
Voltage on R1 relay outputs
AD or BD to BGND:
Continuous
10 ms (F = 0.1 Hz)
1 µs (F = 0.1 Hz)
250 ns (F = 0.1 Hz)
Current into SA or SB: 10 µs rise to Ipeak; 1000 µs fall to 0.5 Ipeak;
2000 µs fall to I =0
Current into SA or SB: 2 µs rise to Ipeak; 10 µs fall to 0.5 Ipeak; 20 µs fall to I = 0
SA SB continuous
Current through AD or BD
P1, P2, P3, LD to GND
ESD Immunity (Human Body Model)
Maximum power dissipation,
Note 1: Thermal limiting circuitry on chip will shut down the circuit at a junction temperature of about 165°C.
Note 2: Rise time of VBH (dv/dt) must be limited to less than 27 v/ s.
Ambient Temperature
Ambient Relative Humidity
T
A
= 85°C
The device should never see this temperature. Operation above 145° C junction temperature may
degrade device reliability.
1
T
A
2
= 70°C
Am79R251
0 to 70°C Commercial
–40 to +85 °C extended temperature
15 to 85%
–55 to +150° C
–40 to +85° C
TBD
–0.4 to +7 V
+0.4 to –85 V
–0.4 to +85 V
150 V
–3 to +3V
+7 V
VBH – 1 to VBP + 1
VBH – 5 to VBP + 5
VBH – 10 to VBP + 10
VBH – 15 to VBP + 15
Ipeak = ±5 mA
Ipeak = ±12.5 mA
5 mA
± 150 mA
–0.4 to VCC + 0.4 V
1500 V min
1.67 W
1.33 W
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