參數資料
型號: LTC4313CDD-2#PBF
廠商: Linear Technology
文件頁數: 6/20頁
文件大?。?/td> 0K
描述: IC 2WIRE BUS BUFFER 8DFN
標準包裝: 121
類型: 2線總線緩沖器
Tx/Rx類型: I²C Logic
電容 - 輸入: 10pF
電源電壓: 2.9 V ~ 5.5 V
電流 - 電源: 8.1mA
安裝類型: 表面貼裝
封裝/外殼: 8-WFDFN 裸露焊盤
供應商設備封裝: 8-DFN(3x3)
包裝: 管件
LTC4313-1/LTC4313-2/
LTC4313-3
14
4313123f
applicaTions inForMaTion
The LTC4313-2 on only one of the shelf managers is
enabled at any given time. The hot insertion logic on the
LTC4313-3 allows the FRUs to be plugged or unplugged
from a live backplane. The features mentioned previously
provide noise immunity and allow timing specifications to
be met for a wide range of backplane loading conditions.
In the 6 × 4 radial configuration shown in Figure 8, the
LTC4314s on the shelf managers and the LTC4313-2s on
the FRUs drive the large backplane capacitance while the
I2C slave devices on the FRUs only drive the small input
capacitance of the LTC4313-2s. The LTC4314s on only
one of the shelf managers are enabled at a given time. All
the benefits provided by the LTC4313-2 in Figure 7 apply
to Figure 8 as well.
Cascading and Interoperability with Other LTC Buffers
and Non-Compliant I2C Devices
Multiple LTC4313s can be cascaded or the LTC4313 can be
cascaded with other LTC bus buffers. Cascades often exist
in large I2C systems, where multiple I/O cards having bus
buffers connect to a common backplane bus. Two issues
need to be considered when using such cascades – the
additivenatureofthebufferlogiclowoffsetvoltagesandthe
impact of the RTA-buffer interaction on the noise margin.
Figure 8. LTC4313-2 Used in a Radially Connected Telecommunication System in a 6 × 4 Arrangement.
Only the Clock Path is Shown for Simplicity. The Data Pathway is Identical
SHELF MANAGER #1
IPMB-A(X24)
IPMB-B(X24)
SCL1
SCL24
SCL1
SCL24
3.3V
R2
10k
LTC4314#1
VCC
VCC2
SCLOUT1
SCLOUT2
SCLOUT3
SCLOUT4
SCLIN
ENABLE1
ENABLE2
ENABLE3
ENABLE4
ACC
ENABLE1A
ENABLE2A
ENABLE3A
ENABLE4A
ENABLE21A
ENABLE22A
ENABLE23A
ENABLE24A
R1
10k
P
3.3V
IPMB-B DETAILS (NOT SHOWN) ARE IDENTICAL TO IPMB-A
IPMB-B
R5
10k
LTC4314#6
VCC
VCC2
SCLOUT1
SCLOUT2
SCLOUT3
SCLOUT4
SCLIN
ENABLE1
ENABLE2
ENABLE3
ENABLE4
ACC
3.3V
4313123 F08
BACKPLANE
IPMB-B
SCL24
3.3V
IPMB-A
SCL1
IPMB-A
SCL24
IPMB-B
SCL1
FRU #1
LTC4313-2
I2C
DEVICE
3.3V
SCLOUT
VCC
SCLIN
R3
10k
R4
10k
LTC4313-2
SCLOUT
VCC
SCLIN
FRU #24
3.3V
LTC4313-2
I2C
DEVICE
3.3V
SCLOUT
VCC
SCLIN
R6
10k
R7
10k
LTC4313-2
SCLOUT
VCC
SCLIN
SHELF MANAGER #2
IDENTICAL TO SHELF MANAGER #1
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LTC4313CMS8-1#TRPBF 功能描述:IC 2WIRE BUS BUFFER 8MSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 信號緩沖器,中繼器,分配器 系列:- 標準包裝:160 系列:- 類型:轉發(fā)器 Tx/Rx類型:以太網 延遲時間:- 電容 - 輸入:- 電源電壓:2.37 V ~ 2.63 V 電流 - 電源:60mA 安裝類型:表面貼裝 封裝/外殼:64-TQFP 裸露焊盤 供應商設備封裝:64-TQFP-EP(10x10) 包裝:托盤 其它名稱:Q5134101
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