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參數(shù)資料
| 型號： | MAX3051 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | CAN |
| 英文描述： | +3.3V, 1Mbps, Low-Supply-Current CAN Transceiver |
| 中文描述： | +3.3V、1Mbps、低電源電流CAN收發(fā)器 |
| 文件頁數(shù)： | 10/13頁 |
| 文件大小： | 191K |
| 代理商： | MAX3051 |
M
+3.3V, 1Mbps, Low-S upply-Current
CAN Transc eiver
10
______________________________________________________________________________________
is switched off and the receiver is switched to a low-
current/low-speed state. If dominant bits are detected,
RXD switches to low level. The microcontroller should
react to this condition by switching the transceiver back
to normal operation.
When the MAX3051 enters standby mode, RXD goes
high for 4μs (max) regardless of the BUS state.
However, after 4μs, RXD goes low only when the BUS
is dominant, otherwise RXD remains high (when the
BUS is recessive). For proper measurement of standby-
to-receiver active time (t
SBRXDL
), the BUS should be in
dominant state (see Figure 2).
Shutdown
Drive SHDN high to enter shutdown mode. Connect
SHDN to ground or leave floating for normal operation.
T hermal S hutdown
If the junction temperature exceeds +160°C, the device
is switched off. The hysteresis is approximately 25°C,
disabling thermal shutdown once the temperature
drops below 135°C. In thermal shutdown, CANH and
CANL go recessive and all IC functions are disabled.
Applic ations Information
Reduc ed EMI and Reflec tions
In slope-control mode, the CANH and CANL outputs
are slew-rate limited, minimizing EMI and reducing
reflections caused by improperly terminated cables.
In multidrop CAN applications, it is important to main-
tain a direct point-to-point wiring scheme. A single pair
of wires should connect each element of the CAN bus,
and the two ends of the bus should be terminated with
120
resistors (Figure 6). A star configuration should
never be used.
Any deviation from the point-to-point wiring scheme
creates a stub. The high-speed edge of the CAN data
on a stub can create reflections back down the bus.
These reflections can cause data errors by eroding the
noise margin of the system.
Although stubs are unavoidable in a multidrop system,
care should be taken to keep these stubs as small as
possible, especially in high-speed mode. In slope-con-
trol mode, the requirements are not as rigorous, but
stub length should still be minimized.
Power S upply and Bypassing
The MAX3051 requires no special layout considerations
beyond common practices. Bypass V
CC
to GND with a
0.1μF ceramic capacitor mounted close to the IC with
short lead lengths and wide trace widths.
CONDITION FORCED AT PIN RS
V
RS
< 0.3 x V
CC
0.4 x V
CC
<V
RS
< 0.6 x V
CC
V
RS
> 0.75 x V
CC
MODE
High Speed
Slope Control
Standby
RESULTING CURRENT AT RS
|
RS
|< 500μA
10μA < |
RS
|< 200μA
|
RS
|< 10μA
Table 2. Mode Selection Truth Table
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PDF描述 |
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| MAX3051EKA-T | +3.3V, 1Mbps, Low-Supply-Current CAN Transceiver |
| MAX3053 | 【80V Fault-Protected, 2Mbps, Low Supply Current CAN Transceiver |
| MAX3053ASA | 【80V Fault-Protected, 2Mbps, Low Supply Current CAN Transceiver |
| MAX3053ESA | 【80V Fault-Protected, 2Mbps, Low Supply Current CAN Transceiver |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX3051EKA | 制造商:Maxim Integrated Products 功能描述:+3.3V 1MBPS LOW-SUPPLY-CURRENT CA - Rail/Tube |
| MAX3051EKA+ | 制造商:Maxim Integrated Products 功能描述:+3.3V 1MBPS LOW-SUPPLY-CURRENT CA - Rail/Tube |
| MAX3051EKA+T | 功能描述:CAN 接口集成電路 3.3V 1Mbps Transceiver RoHS:否 制造商:Texas Instruments 類型:Transceivers 工作電源電壓:5 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX3051EKA-T | 功能描述:CAN 接口集成電路 RoHS:否 制造商:Texas Instruments 類型:Transceivers 工作電源電壓:5 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX3051ESA | 功能描述:CAN 接口集成電路 RoHS:否 制造商:Texas Instruments 類型:Transceivers 工作電源電壓:5 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:SOIC-8 封裝:Tube |
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