参数资料
型号: LTC4303IMS8#PBF
厂商: Linear Technology
文件页数: 3/12页
文件大小: 549K
描述: IC BUS BUFFER I2C 8-MSOP
产品培训模块: LTC4310 - Hot-Swappable I²C Isolators
标准包装: 50
类型: 热交换开关
应用: 通用型缓冲器/总线扩展器
内部开关:
电源电压: 2.7 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
供应商设备封装: 8-MSOP
包装: 管件
LTC4303
3
4303fb
ELECTRICAL CHARACTERISTICS
 
The ?/SPAN> denotes the speci cations which apply over the full operating
temperature range, otherwise speci cations are at T
A
 = 25癈. V
CC
 = 2.7V to 5.5V, unless otherwise noted.
Note 1: Stresses beyond those listed under Absolute Maximum Ratings 
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All currents into pins are positive; all voltages are referenced to 
GND unless otherwise speci ed.
Note 3: Pulsed less than 5?/SPAN>s.
Note 4: The connection circuitry always regulates the output to a higher 
voltage than its input. The magnitude of this offset voltage as a function of
the pull-up resistor and V
CC
 voltage is shown in the Typical Performance
Characteristics section.
Note 5: I
PULLUPAC
 varies with temperature and V
CC
 voltage, as shown in
the Typical Performance Characteristics section.
Note 6: Guaranteed  by design, not tested in production.
Note 7: I
CC
 test performed with connection circuitry active.
SYMBOL
PARAMETER
CONDITIONS
 
MIN
TYP
MAX
UNITS
V
HYS
 
SDA, SCL, Logic Input Threshold Voltage (Note 6)
 
 
50
 
mV
 
Hysteresis
t
PHL_ENABLE
 
Delay ENABLE High-Low to Disconnect    V
CC
 = 3.3V
 
 
300
 
ns
t
PHL_READY
 
Delay READY High-Low after Disconnect   
 
 
10
 
ns
t
PLH_ENABLE
 
Delay ENABLE Low-High to Connect
V
CC
 = 3.3V
?SPAN class="pst LTC4303CDD-TRPBF_2330545_8"> 
60
95
175
t
PLH_READY
 
Delay READY Low-High after Connect
 
 
 
10
 
ns
I
OFF_READY
 
Ready Off Leakage Current
 
?SPAN class="pst LTC4303CDD-TRPBF_2330545_8"> 
 
 
?0
Rise-Time Accelerators
I
PULLUPAC
 
Transient Boosted Pull-Up Current
Positive Transition on SDA, SCL, V
CC
= 2.7V,    
2
3.5
5.5
mA
 
 
Slew Rate = 0.8V/祍 (Note 5)
 
Bus Stuck Low Timeout
t
TIMEOUT
 
Bus Stuck Low Timer
SDAOUT, SCLOUT = 0V
?
25
30
35
ms
Input-Output Connection
V
OS
 
Input-Output Offset Voltage
10k to V
CC
 on SDA, SCL,
?
40
80
120
mV
 
 
2.7k to V
CC
 on SDA, SCL
?SPAN class="pst LTC4303CDD-TRPBF_2330545_8"> 
50
100
150
mV
 
 
V
CC
= 3.3V, V
SDA/SCL
= 0.2V (Note 4)
C
IN
 
Digital Input Capacitance
(Note 6)
 
 
 
10
pF
 
SDAIN, SDAOUT, SCLIN, SCLOUT
V
IL, MAX
 
Input Logic Low Voltage
 
?SPAN class="pst LTC4303CDD-TRPBF_2330545_8"> 
 
 
0.4
V
I
LEAK
 
Input Leakage Current
SDA, SCL, V
CC
 = 5.5V
?SPAN class="pst LTC4303CDD-TRPBF_2330545_8"> 
 
 
?
V
OL
 
Output Low Voltage, Input = 0
SDA, SCL Pins, I
SINK
 = 4mA, V
CC
 = 2.7V
?SPAN class="pst LTC4303CDD-TRPBF_2330545_8"> 
0
0.19
0.3
V
Timing Characteristics
f
I2C, MAX
 
I
2
C Maximum Operating Frequency
(Note 6)
 
400
600
 
kHz
t
BUF
 
Bus Free Time Between Stop and Start     (Note 6)
 
 
 
1.3
 
Condition
t
HD, STA
 
Hold Time After (Repeated)
(Note 6)
 
 
 
100
ns
 
Start Condition
t
SU, STA
 
Repeated Start Condition Set-Up Time
(Note 6)
 
 
 
0
ns
t
SU, STO
 
Stop Condition Set-Up Time
(Note 6)
 
 
 
0
ns
t
HD, DATI
 
Data Hold Time Input
(Note 6)
 
 
 
0
ns
t
SU, DAT
 
Data Set-Up Time
(Note 6)
 
 
 
100
ns
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