|
|
PDF LUCL8575BP Data sheet ( Hoja de datos )
| Número de pieza | LUCL8575BP | |
| Descripción | Dual-Resistive/Low-Cost Subscriber Line Interface Circuit(SLIC) | |
| Fabricantes | Agere Systems | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de LUCL8575BP (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
Advance Data Sheet
March 1997
L8575 Dual-Resistive, Low-Cost
Subscriber Line Interface Circuit (SLIC)
Features
s Two channels in a single package
s Serial data interface
s Per-channel powerdown
s Low standby power (≤65 mW per channel)
s Integrated protection
s No external protection device required
s Battery noise cancellation
s Switchhook detector
s Ring-trip detector
s Switchhook and ring-trip detector self-test
s Fault detector
s Zero ring voltage cross detection
s Three relay drivers per channel
s 44-pin, surface-mount, plastic package (PLCC)
Description
The L8575 is a dual-resistive, low-cost subscriber
line interface circuit (SLIC) that is optimized to meet
both ITU-T recommendations and LSSGR require-
ments for 600 Ω/900 Ω resistive and complex imped-
ance termination applications. It interfaces the low-
voltage circuits on an analog line card to the Tip and
Ring of two subscriber loops. The L8575 does not
supply dc current to the subscriber loops—external
resistors are used for this purpose. The device is built
using a 90 V complementary bipolar (CBIC) process
and is available in a 44-pin PLCC package.
1 page  
Advance Data Sheet
March 1997
Preliminary Pin Information
L8575
Dual-Resistive, Low-Cost SLIC
RDDB
RDRB
RDTB
RTPB
RTNB
XMTB
TSB
RSB
RGBNB
VRNB
IRPB
6 5 4 3 2 1 44 43 42 41 40
7 39
8 38
9 37
10 36
11
12 L8575
13
35
34
33
14 32
15 31
16 30
17 29
18 19 20 21 22 23 24 25 26 27 28
RDDA
RDRA
RDTA
RTPA
RTNA
XMTA
TSA
RSA
RGBNA
VRNA
IRPA
Figure 2. 44-Pin PLCC Pinout
12-3364(F)
Table 1. Pin Descriptions
Pin Symbol Type
1 NC —
2 DO O
3 DI
I
4 CFLTB I/O
5 VDDD
6 DGND
7 RDDB
8 RDRB
9 RDTB
10 RTPB
—
—
O
O
O
I
Name/Function
No Connect. Unused pin (no internal connection).
Serial Data Output. Data in the internal 8-bit serial shift register is shifted out on this logic
output with the clock signal on pin CLK.
Serial Data Input. Data on this logic input is shifted into the 8-bit serial shift register with
the clock signal on pin CLK.
Fault Filter (Channel B). Connect a 0.1 µF capacitor from CFLTB to AGND. This capaci-
tor filters Tip/Ring transients from the channel B fault detector.
5 V Digital dc Supply. 5 V supply for logic and relay driver flyback diodes.
Digital Ground. Ground for channel B relay drivers.
Disconnect Relay Driver (Channel B). This output drives the external relay.
Ringing Relay Driver (Channel B). This output drives an external ringing relay.
Test Relay Driver (Channel B). This output drives an external test relay.
Ring-Trip Positive (Channel B). Positive sense input for the ring-trip detector.
Lucent Technologies Inc.
5
5 Page 
Advance Data Sheet
March 1997
L8575
Dual-Resistive, Low-Cost SLIC
Electrical Characteristics (continued)
Relay Drivers
The relay drivers operate using the VDDD supply. When VDDD is first applied to the device, the relay drivers must
power up and remain in the off-state until the SLIC is configured via the serial data interface. The table below sum-
marizes their parameter requirements.
Table 5. Relay Drivers (RDRA, RDTA, RDRB, RDTB, RDDA, and RDDB)
Parameter1
Off-state Output Current (VOUT = VDDD)
On-state Output Voltage (IOUT = 40 mA)
On-state Output Voltage (IOUT = 20 mA)
Clamp Diode Reverse Current (VOUT = 0)
Clamp Diode On Voltage (IOUT = 80 mA)
Turn-on Time2
Turn-off Time2
Symbol
IOFF
VON
VON
IR
VOC
tON
tOFF
Min
—
0
0
—
VDDD + 0.5
—
—
1. Unless otherwise specified, all logic voltages are referenced to DGND.
2. This parameter is not tested in production. It is guaranteed by design and device characterization.
Max
±10
0.60
0.40
±10
VDDD + 3.0
10
10
Unit
µA
V
V
µA
V
µs
µs
Table 6. Analog Signal Pins
Parameter
PTA, PTB, PRA, and PRB:
Surge Current (from external source):
Continuous
1 ms Exponential Pulse (50 repetitions)
1 second, 60 Hz (60 repetitions)
10 µs Rectangular Pulse (10 repetitions)
Output Drive (PTA and PTB):
Drive Current (sink only)
Voltage Swing (IOUT = 15 mA)
dc Bias Current (active state only)
Output Drive (PRA and PRB):
Drive Current (source only)
Voltage Swing (IOUT = 15 mA)
dc Bias Current (active state only)
Output Impedance (60 Hz—3.4 kHz)1
Output Load Resistance (dc or ac)1
Min
—
—
—
—
0.1
VBAT + 4
5.3
–15
VBAT
–5.3
1
0
Typ
—
—
—
—
—
—
5.6
—
—
–5.6
—
—
1.This parameter is not tested in production. It is guaranteed by design and device characterization.
Max Unit
±50
±750
±175
±1.25
mAdc
mA
mArms
A
15
AGND
5.9
mA
V
mA
–0.1
AGND – 4
–5.9
—
100
mA
V
mA
MΩ
kΩ
Lucent Technologies Inc.
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet LUCL8575BP.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LUCL8575BP | Dual-Resistive/Low-Cost Subscriber Line Interface Circuit(SLIC) | Agere Systems |
| LUCL8575BP-TR | Dual-Resistive/Low-Cost Subscriber Line Interface Circuit(SLIC) | Agere Systems |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |