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HWD1487

更新时间： 2024-01-22 14:34:32
品牌 Logo 应用领域
其他 - ETC /
页数 文件大小 规格书
20页 494K
描述
Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers

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中文翻译

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HWD1487 技术参数

生命周期：Contact Manufacturer包装说明：DIP, DIP8,.3
Reach Compliance Code：unknown风险等级：5.84
差分输出：YES驱动器位数：1
高电平输入电流最大值：0.00025 AJESD-30 代码：R-XDIP-T8
端子数量：8最高工作温度：125 °C
最低工作温度：-55 °C最小输出摆幅：1.5 V
最大输出低电流：0.004 A封装主体材料：CERAMIC
封装代码：DIP封装等效代码：DIP8,.3
封装形状：RECTANGULAR封装形式：IN-LINE
电源：5 V认证状态：Not Qualified
最大接收延迟：200 ns子类别：Line Driver or Receivers
最大压摆率：0.5 mA标称供电电压：5 V
表面贴装：NO温度等级：MILITARY
端子形式：THROUGH-HOLE端子节距：2.54 mm
端子位置：DUAL

HWD1487 数据手册

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Lo w -P o w e r, S le w -Ra t e -Lim it e d  
RS -4 8 5 /RS -4 2 2 Tra n s c e ive rs  
Ge n e ra l De s c rip t io n  
__Ne xt Ge ne ra tion De vic e Fe a ture s  
The HWD481, HWD483, HWD485, HWD487–HWD491, and  
HWD1487 are low-power transceivers for RS-485 and RS-  
422 communication. Each part contains one driver and one  
receiver. The HWD483, HWD487, HWD488, and HWD489  
feature reduced slew-rate drivers that minimize EMI and  
reduce reflections caused by improperly terminated cables,  
thus allowing error-free data transmission up to 250kbps.  
The driver slew rates of the HWD481, HWD485, HWD490,  
HWD491, and HWD1487 are not limited, allowing them to  
transmit up to 2.5Mbps.  
♦ For Fault-Tolerant Applications  
HWD3430: ±80V Fault-Protected, Fail-Safe, 1/4  
Unit Load, +3.3V, RS-485 Transceiver  
HWD3440E–HWD3444E: ±15kV ESD-Protected,  
±60V Fault-Protected, 10Mbps, Fail-Safe,  
RS-485/J1708 Transceivers  
♦ For Space-Constrained Applications  
HWD3460–HWD3464: +5V, Fail-Safe, 20Mbps,  
Profibus RS-485/RS-422 Transceivers  
HWD3362: +3.3V, High-Speed, RS-485/RS-422  
Transceiver in a SOT23 Package  
These transceivers draw between 120µA and 500µA of  
supply current when unloaded or fully loaded with disabled  
drivers. Additionally, the HWD481, HWD483, and HWD487  
have a low-current shutdown mode in which they consume  
only 0.1µA. All parts operate from a single 5V supply.  
HWD3280E–HWD3284E: ±15kV ESD-Protected,  
52Mbps, +3V to +5.5V, SOT23, RS-485/RS-422,  
True Fail-Safe Receivers  
HWD3293/HWD3294/HWD3295: 20Mbps, +3.3V,  
SOT23, RS-855/RS-422 Transmitters  
Drivers are short-circuit current limited and are protected  
against excessive power dissipation by thermal shutdown  
circuitry that places the driver outputs into a high-imped-  
ance state. The receiver input has a fail-safe feature that  
guarantees a logic-high output if the input is open circuit.  
♦ For Multiple Transceiver Applications  
HWD3030E–HWD3033E: ±15kV ESD-Protected,  
+3.3V, Quad RS-422 Transmitters  
The HWD487 and HWD1487 feature quarter-unit-load  
receiver input impedance, allowing up to 128 HWD487/  
HWD1487 transceivers on the bus. Full-duplex communi-  
cations are obtained using the HWD488–HWD491, while  
the HWD481, HWD483, HWD485, HWD487, and HWD1487  
are designed for half-duplex applications.  
♦ For Fail-Safe Applications  
HWD3080–HWD3089: Fail-Safe, High-Speed  
(10Mbps), Slew-Rate-Limited RS-485/RS-422  
Transceivers  
________________________Ap p lic a t io n s  
♦ For Low-Voltage Applications  
HWD3483E/HWD3485E/HWD3486E/HWD3488E/  
HWD3490E/HWD3491E: +3.3V Powered, ±15kV  
ESD-Protected, 12Mbps, Slew-Rate-Limited,  
True RS-485/RS-422 Transceivers  
Low-Power RS-485 Transceivers  
Low-Power RS-422 Transceivers  
Level Translators  
Transceivers for EMI-Sensitive Applications  
Industrial-Control Local Area Networks  
Ordering Information appears at end of data sheet.  
______________________________________________________________S e le c t io n Ta b le  
RECEIVER/  
DRIVER  
ENABLE  
QUIESCENT  
CURRENT  
(µA)  
NUMBER OF  
TRANSMITTERS  
ON BUS  
PART  
NUMBER  
HALF/FULL DATA RATE SLEW-RATE LOW-POWER  
PIN  
COUNT  
DUPLEX  
(Mbps)  
LIMITED  
SHUTDOWN  
HWD481  
HWD483  
HWD485  
HWD487  
HWD488  
HWD489  
HWD490  
HWD491  
HWD1487  
Half  
Half  
Half  
Half  
Full  
Full  
Full  
Full  
Half  
2.5  
0.25  
2.5  
No  
Yes  
No  
Yes  
Yes  
No  
Yes  
No  
No  
No  
No  
No  
Yes  
Yes  
Yes  
Yes  
No  
300  
120  
300  
120  
120  
120  
300  
300  
230  
32  
32  
8
8
32  
8
0.25  
0.25  
0.25  
2.5  
Yes  
Yes  
Yes  
No  
128  
32  
8
8
Yes  
No  
32  
14  
8
32  
2.5  
No  
Yes  
Yes  
32  
14  
8
2.5  
No  
128  
1
1234567...20

中文翻译

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