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參數(shù)資料
| 型號： | LE79555-1VC |
| 英文描述： | Telecommunication IC |
| 中文描述： | 通信集成電路 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 411K |
| 代理商： | LE79555-1VC |
Publication#
080686
Issue Date:
January 2001
Rev:
A3
Amendment: /
0
Le79555
Subscriber Line Interface Circuit
The Le79555 Subscriber Line Interface Circuit implements the basic telephone line interface functions, and enables
the design of low-power, high-performance POTS line interface cards.
DISTINCTIVE CHARACTERISTICS
I
Ideal for high-density, low-power linecard
applications
I
Control states: Active, Reverse Polarity, Tip
Open, Ringing, Standby, and Open Circuit
I
Low standby power (35 mW)
I
–16 V to –58 V battery operation
I
On-hook transmission
I
Two-wire impedance set by single external
impedance
I
Programmable constant-current feed
I
Low Overhead Voltage (6 V)
I
Programmable loop-detect threshold
I
Ground-start detector
I
Programmable ring-trip detect threshold
I
No –5 V supply required
I
Current Gain = 500
I
Three on-chip relay drivers and relay snubbers,
one ringing and two general purpose
I
Tip Open state for ground-start lines
I
On-chip switching regulator for Low power
dissipation
BLOCK DIAGRAM
Controller
C3
RSN
Two-Wire
Interface
HPA
HPB
Signal
Transmission
Input Decoder
and Control
Ring-Trip Detector
Power-Feed
L
BGND
VCC
VBREF
RDC
CAS
VDC
AGND
VTX
VBAT
A(TIP)
B(RING)
DET
RYOUT1
RD
C1
C2
Relay
Driver
Relay
Driver
Ring Relay
Driver
DA
DB
RINGOUT
RYOUT2
D1
D2
Off-Hook Detector
Battery Switch
VBAT2
BATSW
VREG
Switching Regulator
CHS
QBAT CHCLK
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| LE79555-4VC | Telecommunication IC |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LE79555-2BVC | 制造商:Microsemi Corporation 功能描述:SLIC 1CH 63DB 120MA 5V 44TQFP - Trays 制造商:Microsemi Corporation 功能描述:SLIC+ CODEC |
| LE79555-2BVCT | 制造商:Microsemi Corporation 功能描述:SLIC 1CH 63DB 120MA 5V 44TQFP - Tape and Reel |
| LE79555-2FQC | 制造商:Microsemi Corporation 功能描述:SLIC 1CH 63DB 120MA 5V 32QFN EP - Trays 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC SLIC 1CH SWREG 63DB 32QFN 制造商:Microsemi Corporation 功能描述:IC SLIC 1CH SWREG 63DB 32QFN |
| LE79555-2FQCT | 制造商:Microsemi Corporation 功能描述:SLIC 1CH 63DB 120MA 5V 32QFN EP - Tape and Reel 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC SLIC 1CH SWREG 63DB 32QFN 制造商:Microsemi Corporation 功能描述:IC SLIC 1CH SWREG 63DB 32QFN |
| LE79555-4BVC | 制造商:Microsemi Corporation 功能描述:SLIC 1-CH 63dB 120mA 5V 44-Pin TQFP Tray 制造商:Microsemi Corporation 功能描述:SLIC 1CH 63DB 120MA 5V 44TQFP - Trays 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC SLIC 1CH SWREG 63DB 44TQFP 制造商:Microsemi Corporation 功能描述:IC SLIC 1CH SWREG 63DB 44TQFP 制造商:Legerity 功能描述:TELECOM-SLIC, PQFP44 |
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