參數(shù)資料
型號(hào)： IDT82P2521BH
廠商： IDT, Integrated Device Technology Inc
文件頁數(shù)： 72/147頁
文件大?。?/td> 0K
描述： IC LIU E1 21+1CH SHORT 640-PBGA
標(biāo)準(zhǔn)包裝： 5
類型： 線路接口裝置（LIU）
規(guī)程： E1
電源電壓： 3.135 V ~ 3.465 V
安裝類型： 表面貼裝
封裝/外殼： 640-BGA 裸露焊盤
供應(yīng)商設(shè)備封裝： 640-PBGA-EP（31x31）
包裝： 托盤
其它名稱： 82P2521BH
IDT82P2521
21(+1) CHANNEL HIGH-DENSITY E1 LINE INTERFACE UNIT
Functional Description
30
December 7, 2005
The transformer-less connection will offer a termination option with
reduced cost and board space. However, the waveform amplitude is not
standard compliant, and surge protection and common mode depres-
sion should be enhanced depending on equipment environment.
Figure-8 Receive Differential Line Interface with Twist-
ed Pair Cable (with transformer)
Figure-9 Receive Differential Line Interface with Coax-
ial Cable (with transformer)
Figure-10 Receive Differential Line Interface with
Twisted Pair Cable (transformer-less, non standard
compliant)
Table-1 Impedance Matching Value in Receive Differential Mode
Cable Condition
Partially Internal Impedance Matching
(R120IN = 0) 1
Fully Internal Impedance Matching
(R120IN = 1) 1, 2
External Impedance Matching
R_TERM[2:0]
Rr
R_TERM[2:0]
Rr
R_TERM[2:0] 3
Rr
E1 120
twisted pair (with transformer)
010
120
010
(open)
1XX
120
E1 75
coaxial (with transformer)
011
75
E1 120
twisted pair (transformer-less4)
010
(not supported)
120
Note:
1. Partially Internal Impedance Matching and Fully Internal Impedance Matching are not supported when RIM is low.
2. Fully Internal Impedance Matching is not supported in transformer-less applications.
3. When RIM is low, the setting of the R_TERM[2:0] bits is ignored.
4. In transformer-less applications, the device should be protected against overvoltage. There are three important standards for overvoltage protection:
UL1950 and FCC Part 68;
Telcordia (Bellcore) GR-1089
ITU-T K.20, K.21 and K.41
1:1
Rr
RTIPn
RRINGn
IM
6.0 Vpp
1:1
Rr
RTIPn
RRINGn
IM
4.74 Vpp
IM
6.0Vpp
RTIPn
RRINGn
Rr/2
VCOM1
10 F
1. Two Rr/2 resistors should be connected to VCOM[1:0] that are
coupled to ground via a 10
F capacitor, which provide 60
common mode input resistance.
2. In this mode, lightning protection should be enhanced.
3. The maximum input dynamic range of RTIP/TRING pin is
-0.3 V ~3.6 V (in line monitor mode it is -0.3 V ~ 2 V)
Note:
VCOM0
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
IDT82P2521BHBLANK 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:21(1) Channel High-Density E1 Line Interface Unit
IDT82P2521BHG 功能描述:IC LIU E1 21+1CH SHORT 640-PBGA RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:250 系列:- 類型:收發(fā)器 驅(qū)動(dòng)器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR)
IDT82P2521BHGBLANK 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:21(1) Channel High-Density E1 Line Interface Unit
IDT82P2808 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:8(+1) Channel High-Density T1/E1/J1 Line Interface Unit
IDT82P2808BB 功能描述:IC LIU T1/J1/E1 8+1CH 416-PBGA RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 類型:收發(fā)器 驅(qū)動(dòng)器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR)
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