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| 型号： | MAX7357ETG+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/22页 |
| 文件大小： | 0K |
| 描述： | IC MULTIPLEXER 8X1 24TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 多路复用器 |
| 电路： | 1 x 8:1 |
| 电压电源： | 单电源 |
| 电压 - 电源，单路/双路(±)： | 2.3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-WFQFN 裸露焊盘 |
| 供应商设备封装： | 24-TQFN-EP（4x4） |
| 包装： | 带卷 (TR) |
MAX7356/MAX7357/MAX7358
1-to-8 I2C Bus Switches/Multiplexers with Bus
Lock-Up Detection, Isolation, and Notification
______________________________________________________________________________________
15
tion exists on that channel. If the interrupt feature is
selected (B0 of the configuration register is 1), howev-
er, the interrupt signal,
RST/INT, deasserts (goes to
high) once this bus lock-up indication register is read.
If desired, setting bit B3 of the configuration register to
1 can latch the lock-up data. When B3 is set, the lock-
up bits remain set (even if a channel becomes
“unstuck”) until the lock-up indication register is read
by the master. Lock-up conditions on unconnected aux-
iliary buses are also detected. When this happens, oper-
ation is the same as when lock-ups are detected on
connected buses, except that, if desired, bus connec-
tions may be maintained as long as any detected lock-
ups are present only on unconnected channels. This
option is selected using bit B4 of the configuration regis-
ter. (Figure 9)
Traffic Prior to Lock-Up Register
(MAX7357/MAX7358)
The I2C bus traffic information per SCL clock is moni-
tored and stored into the two-byte traffic prior to lock-up
register. The first two bytes of information after a START
are stored in this register. This I2C bus traffic informa-
tion is frozen upon a bus lock-up detection. A host can
read these two bytes of traffic information upon the
reception of an interrupt signal. The contents of the traf-
fic prior to lock-up register is released and refreshed
once it is read.
The traffic prior to lock-up register can be used to iden-
tify the device address as well as the following byte
involved in a bus lock-up.
When troubleshooting an I2C bus, a scope is usually
used to capture traffic leading to the problem. The con-
tents of the traffic prior to the bus fault can usually be
determined by identifying a device address, a register
address, or a part of this data.
Table 7 shows contents of the traffic prior to the lock-up
register corresponding to a lock-up situation as demon-
strated by Figure 10.
Figure 9. Lock-Up Indication Bits
B7
B6
B5
B4
B3
B2
B1
B0
COMMAND
XX
XXXX
X
0
Channel 0 no lock-up
XX
XXXX
X
1
Channel 0 lock-up
XX
XXXX0
X
Channel 1 no lock-up
XX
XXXX1
X
Channel 1 lock-up
X
0
X
Channel 2 no lock-up
X
1
X
Channel 2 lock-up
X
0
X
Channel 3 no lock-up
X
1
X
Channel 3 lock-up
X
0
X
Channel 4 no lock-up
X
1
X
Channel 4 lock-up
X
0
X
Channel 5 no lock-up
X
1
X
Channel 5 lock-up
X
0
XXXX
X
Channel 6 no lock-up
X
1
XXXX
X
Channel 6 lock-up
0
X
XXXX
X
Channel 7 no lock-up
1
X
XXXX
X
Channel 7 lock-up
Table 6. Lock-Up Register Channel Indication
X = Don’t care.
B6
B0
B7
B5
B4
B3
B2
B1
CHANNEL LOCK-UP INDICATION BITS (READ)
CHANNEL 0
CHANNEL 1
CHANNEL 2
CHANNEL 3
CHANNEL 4
CHANNEL 5
CHANNEL 6
CHANNEL 7
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相关代理商/技术参数 |
参数描述 |
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| MAX7357EUG+ | 功能描述:多路器开关 IC 1-to-8 I2C Bus Switch/MUX RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16 |
| MAX7357EUG+T | 功能描述:多路器开关 IC 1-to-8 I2C Bus Switch/MUX RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16 |
| MAX7358ETG+ | 功能描述:多路器开关 IC 1-to-8 I2C Bus Switch/MUX RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16 |
| MAX7358ETG+T | 功能描述:多路器开关 IC 1-to-8 I2C Bus Switch/MUX RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16 |
| MAX7358EUG+ | 功能描述:多路器开关 IC 1-to-8 I2C Bus Switch/MUX RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16 |
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