le79r241 Zarlink Semiconductor, le79r241 Datasheet - Page 22
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le79r241
Manufacturer Part Number
le79r241
Description
Intelligent Subscriber Line Interface Circuit
Manufacturer
Zarlink Semiconductor
Datasheet
1.LE79R241.pdf
(27 pages)
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LINE CARD PARTS LIST - EXTERNAL RINGING
The following list defines the parts and part values required to meet target specification limits for channel i of the line card (i = 1,
2, 3, 4).
Notes:
1.
2.
3.
U1
U2
U5
DLH
RFA
RSA
RT
RRX
RREF
RMGL
RSHB, RSLB
RHLa
RHLb
RHLc
RHLd
CHLb
CHLd
RMT
RLG
RTEST
CAD
CBATH
CHP
CS
RGFD
RSRB
KR
i
i
i
Required to insure VBH < VBL during startup. May not be needed for some supplies.
DT2i is optional - Should be put if Le79R251 is used.
Value can be adjusted to suit application.
3
i
i
i
i
i
i
i
1
, RFB
i
, RSB
, CBD
i
i
i
i
i
i
, DH
i
i
i
, RSRC
, RMGP
i
, CBATL
i
i
, DL
i
i
3
Item
i
i
, DT1
i
i
DT2i
2
Le79R241 ISLIC device
VE790 series ISLAC
device
TISP61089
Diode
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Capacitor
Capacitor
Resistor
Resistor
Resistor
Capacitor
Capacitor
Capacitor
Capacitor
Resistor
Resistor
Relay
Type
Zarlink Semiconductor Inc.
100 mA
80.6 kΩ
90.9 kΩ
69.8 kΩ
40.2 kΩ
4.32 kΩ
2.49 kΩ
2.49 kΩ
3.01 kΩ
6.04 kΩ
5 V Coil
0.82 µF
200 kΩ
750 kΩ
750 kΩ
100 nF
100 nF
3.3 nF
510 Ω
Value
22 nF
22 nF
50 Ω
1 kΩ
2 kΩ
22
10%
10%
10%
20%
20%
20%
Tol.
2%
2%
1%
1%
1%
5%
1%
1%
1%
1%
1%
1%
1%
1%
2%
1%
Rating
1/10 W
1/10 W
1/10 W
1/10 W
100 V
1/4 W
1/8 W
1/8 W
1/8 W
1/8 W
1/8 W
1/8 W
100 V
100 V
100 V
100 V
1/4 W
10 V
80 V
10 V
2 W
1 W
1 W
2 W
codec
Transient Voltage Suppressor, Power
Innovations
50 ns response time
Fusible or PTC protection resistors
Sense resistors
Impedance control resistor
Receive path gain resistor
Current reference setting resistor
Thermal management resistors
Battery Sense Resistors
Feed/Metering resistor
Feed/Metering resistor
Use 2.87kΩ in metering
Feed/Metering resistor
Use 2.87kΩ in metering
Feed/Metering resistor
Feed/Metering capacitor - Not Polarized
Feed/Metering capacitor - Ceramic
Metallic Current Sense Resistors
Longitudinal Current Sense Resistors
Test board
Ceramic
Ceramic
Ceramic
Protector speed up capacitor
1.2 W typ
External Ringing sense resistors
DPDT
Comments