PBL386402QNAXT Infineon Technologies, PBL386402QNAXT Datasheet - Page 9
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PBL386402QNAXT
Manufacturer Part Number
PBL386402QNAXT
Description
Manufacturer
Infineon Technologies
Datasheet
1.PBL386402QNAXT.pdf
(51 pages)
Specifications of PBL386402QNAXT
Number Of Channels
1
On-hook Transmission
Yes
Polarity Reversal
Yes
On-chip Ring Relay Driver
Yes
Operating Temp Range
-40C to 85C
Package Type
PLCC
Loop Current Limit
45mA
Operating Temperature Classification
Industrial
Pin Count
28
Mounting
Surface Mount
Operating Supply Voltage (max)
5.25/-58V
Lead Free Status / RoHS Status
Compliant
1.2
•
•
1.3
The PBL 38640/2 Subscriber Line Interface Circuit (SLIC) is a 90 V bipolar integrated
circuit for use in PBX, Terminal adapters and other telecommunications equipment. The
PBL 38640/2 SLIC has been optimized for low total line interface cost and for a high
degree of flexibility in different applications.
The PBL 38640/2 SLIC emulates resistive loop feed, programmable between 2x50
and 2x900
current limited region the loop feed is nearly constant current with a slight slope
corresponding to 2x30 k .
A second lower battery voltage may be connected to the device to reduce short loop
power dissipation. The SLIC automatically switches between the two battery supply
voltages without need for external components or external control.
The SLIC incorporates loop current, ground key and ring-trip detection functions. The
PBL 38640/2 is compatible with both loop and ground start signalling.
Two- to four-wire and four- to two-wire voice frequency (VF) signal conversion is
accomplished by the SLIC in conjunction with either a conventional CODEC/filter or with
a programmable CODEC/filter, for example SiCoFi PEB 2466. The programmable two-
wire impedance, complex or real, is set by a simple external network.
Longitudinal voltages are suppressed by a feedback loop in the SLIC and the
longitudinal balance specifications meet Bellcore TR909 requirements.
The PBL 38640/2 SLIC package options are 24-pin SSOP, 24-pin PDSO or 28-pin
PLCC.
Data Sheet
Basic functionality Central Office Line card
Digital Loop Carriers (DLC)
Typical Applications
Description
, with short loop current limiting adjustable to maximum 45 mA. In the
9
Rev. 2.0, 2005-04-14
PBL 38640/2
FlexiSLIC
Overview