le79231 Zarlink Semiconductor, le79231 Datasheet - Page 11

• Manufacturer Part Number: le79231
• Description: Intelligent Subscriber Line Interface Circuit
• Manufacturer: Zarlink Semiconductor

Operating Ranges
Legerity guarantees the performance of this device over commercial (0 to 70º C) and industrial (-40 to 85ºC) temperature ranges
by conducting electrical characterization over each range and by conducting a production test with single insertion coupled to
periodic sampling. These characterization and test procedures comply with section 4.6.2 of Bellcore GR-357-CORE Component
Reliability Assurance Requirements for Telecommunications Equipment.
Environmental Ranges
Electrical Ranges
SPECIFICATIONS
Power Dissipation
Loop resistance = 0 to ∞ unless otherwise noted (not including fuse resistors), 2 x 50 Ω fuse resistors, BATL = –36 V,
BATH = –90 V, VCC = +5 V. For power dissipation measurements, DC-feed conditions are as follows:
•
•
•
•
•
ILA (Active mode current limit) = 25 mA (IRSN = 50 µA)
RFD (Feed resistance) = 500 Ω
VAS (Anti-sat activate voltage) = 10 V
VAPP (Apparent Battery Voltage) = 48 V
RMGLi = RMGPi (Thermal management resistors) = 1 kΩ
Ambient Temperature
Ambient Relative Humidity
VCC
VBL
VBH
BGND with respect to GND
Load resistance on VTX to V
Load resistance on VSAB to V
Power Dissipation
Normal Polarity
Power Supply Currents
Description
REF
REF
On-Hook Disconnect
On-Hook Standby
On-Hook Transmission Le79231 ISLIC device
Fixed Longitudinal Voltage
On-Hook Active High Battery
device
Off-Hook Active Low Battery
device
RL = 294 Ω
On-Hook Disconnect
On-Hook Standby
On-Hook Transmission
Fixed Longitudinal Voltage
On-Hook Active High Battery
Off-Hook Active Low Battery
RL = 294 Ω
Zarlink Semiconductor Inc.
Test Conditions
11
Le79231 ISLIC
Le79231 ISLIC
0 to 70° C Commercial
–40 to +85 ° C extended temperature
15 to 85%
5 V ± 5%
–15 V to VBH
–42.5 to –70V
–100 to +100 mV
20 kΩ minimum
20 kΩ minimum
TMG
VCC
VCC
VCC
VCC
VCC
VBH
VBH
VBH
VBH
VBH
VBL
VBL
VBL
VBL
VBL
Min
0.75
1.85
26.9
Typ
175
340
700
200
0.4
0.1
3.1
3.1
3.6
7.3
0.9
7.5
55
80
0
0
5
0
Max
100
215
400
800
0.7
3.5
1.1
3.5
2.5
4.5
8.0
2.0
70
10
6
Unit
mW
mA