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| 型号： | MAX13444EASA+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/18页 |
| 文件大小： | 0K |
| 描述： | IC TXRX J1708 HALF DUPLEX 8-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 1/1 |
| 规程： | RS422，RS485 |
| 电源电压： | 4.75 V ~ 5.25 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
| 产品目录页面： | 1408 (CN2011-ZH PDF) |
MAX13442E/MAX13443E/MAX13444E
±15kV ESD-Protected, ±80V Fault-Protected,
Fail-Safe RS-485/J1708 Transceivers
16
______________________________________________________________________________________
J1708 Applications
The MAX13444E is designed for J1708 applications. To
configure the MAX13444E, connect DE and RE to GND.
Connect the signal to be transmitted to TXD. Terminate
the bus with the load circuit as shown in Figure 14. The
drivers used by SAE J1708 are used in a dominant-
mode application. DE is active low; a high input on DE
places the outputs in high impedance. When the driver is
disabled (TXD high or DE high), the bus is pulled high by
external bias resistors R1 and R2. Therefore, a logic-level
high is encoded as recessive. When all transceivers are
idle in this configuration, all receivers output logic-high
because of the pullup resistor on A and pulldown resistor
on B. R1 and R2 provide the bias for the recessive state.
C1 and C2 combine to form a lowpass filter, effective for
reducing FM interference. R2, C1, R4, and C2 combine
to form a 1.6MHz lowpass filter, effective for reducing
AM interference. Because the bus is unterminated, at
high frequencies, R3 and R4 perform a pseudotermina-
tion. This makes the implementation more flexible, as no
specific termination nodes are required at the ends of
the bus.
DI
RO
DE
A
B
RE
RO
DI
DE
D
R
BB
B
A
120
Ω
120
Ω
D
R
MAX13442E
MAX13443E
RE
Figure 13. MAX13442E/MAX13443E Typical RS-485 Network
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX13444EASA/V+ | 功能描述:RS-485接口IC +/-80V Fault Protected RS-485 Half-Duplex Transceiver with Foldback Current Limit RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX13444EASA/V+T | 功能描述:RS-485接口IC +/-80V Fault Protected RS-485 Half-Duplex Transceiver with Foldback Current Limit RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX13444EASA+ | 功能描述:RS-485接口IC Half-Dplx RS-422/485 250ksps 5V LD/Rec RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX13444EASA+T | 功能描述:RS-485接口IC Half-Dplx RS-422/485 250ksps 5V LD/Rec RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX13444EASA-T | 功能描述:RS-485接口IC RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
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