參數(shù)資料
型號: LTC4300A-2IMS8#TRPBF
廠商: Linear Technology
文件頁數(shù): 5/16頁
文件大小: 182K
描述: IC BUFFER BUS 2WR HOTSWAP 8-MSOP
產(chǎn)品培訓(xùn)模塊: LTC4310 - Hot-Swappable I²C Isolators
標(biāo)準(zhǔn)包裝: 2,500
類型: 熱交換開關(guān)
應(yīng)用: 通用型緩沖器/總線擴展器
內(nèi)部開關(guān):
電源電壓: 2.7 V ~ 5.5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 8-TSSOP,8-MSOP(0.118",3.00mm 寬)
供應(yīng)商設(shè)備封裝: 8-MSOP
包裝: 帶卷 (TR)
LTC4300A-1/LTC4300A-2
5
4300a12fa
PIN FUNCTIONS
ENABLE/V
CC2
 (Pin 1): Chip Enable Pin/Card Supply Volt-
age. For the LTC4300A-1, this is a digital CMOS threshold
input pin. Grounding this pin puts the part in a low current
(<1糀) mode. It also disables the rise-time accelerators,
disables the bus precharge circuitry, drives READY low,
isolates SDAIN from SDAOUT and isolates SCLIN from
SCLOUT. Drive ENABLE all the way to V
CC
 for normal
operation. Connect ENABLE to V
CC
 if this feature is not
being used. For the LTC4300A-2, this is the supply voltage
for the devices on the card I
2
C busses. Connect pull-up
resistors from SDAOUT and SCLOUT to this pin. Place a
bypass capacitor of at least 0.01糉 close to this pin for
best results.
SCLOUT (Pin 2): Serial Clock Output. Connect this pin to 
the SCL bus on the card.
SCLIN (Pin 3): Serial Clock Input. Connect this pin to the 
SCL bus on the backplane.
GND (Pin 4): Ground. Connect this pin to a ground plane 
for best results.
READY/ACC (Pin 5): Connection Flag/Rise-Time Accelera-
tor Control. For the LTC4300A-1, this is an open-drain
NMOS output which pulls low when either ENABLE is
low or the start-up sequence described in the Operation
section has not been completed. READY goes high when
ENABLE is high and start-up is complete. Connect a 10k
resistor from this pin to V
CC
 to provide the pull up. For
the LTC4300A-2, this is a CMOS threshold digital input
pin that enables and disables the rise-time accelerators
on all four SDA and SCL pins. Drive ACC all the way to the
V
CC2
 supply voltage to enable all four accelerators; drive
ACC to ground to turn them off.
SDAIN (Pin 6): Serial Data Input. Connect this pin to the 
SDA bus on the backplane.
SDAOUT (Pin 7): Serial Data Output. Connect this pin to 
the SDA bus on the card.
V
CC
 (Pin 8): Main Input Power Supply from Backplane. 
This is the supply voltage for the devices on the back-
plane I
2
C busses. Connect pull-up resistors from SDAIN
and SCLIN (and also from SDAOUT and SCLOUT for the
LTC4300A-1) to this pin. Place a bypass capacitor of at
least 0.01糉 close to this pin for best results.
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