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DS1487N/NOPB PDF预览

DS1487N/NOPB

更新时间: 2024-02-11 15:19:58
品牌 Logo 应用领域
德州仪器 - TI 驱动光电二极管接口集成电路驱动器
页数 文件大小 规格书
10页 182K
描述
IC LINE TRANSCEIVER, PDIP8, PLASTIC, DIP-8, Line Driver or Receiver

DS1487N/NOPB 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:DIP
包装说明:DIP, DIP8,.3针数:8
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.67
差分输出:YES驱动器位数:1
高电平输入电流最大值:0.000002 A输入特性:DIFFERENTIAL SCHMITT TRIGGER
接口集成电路类型:LINE TRANSCEIVER接口标准:EIA-485
JESD-30 代码:R-PDIP-T8JESD-609代码:e3
长度:9.817 mm湿度敏感等级:1
功能数量:1端子数量:8
最高工作温度:70 °C最低工作温度:
最小输出摆幅:1.5 V最大输出低电流:0.004 A
输出极性:COMPLEMENTARY封装主体材料:PLASTIC/EPOXY
封装代码:DIP封装等效代码:DIP8,.3
封装形状:RECTANGULAR封装形式:IN-LINE
峰值回流温度(摄氏度):260电源:5 V
认证状态:Not Qualified最大接收延迟:400 ns
接收器位数:1座面最大高度:5.08 mm
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
技术:CMOS温度等级:COMMERCIAL
端子面层:Matte Tin (Sn)端子形式:THROUGH-HOLE
端子节距:2.54 mm端子位置:DUAL
处于峰值回流温度下的最长时间:40最大传输延迟:80 ns
宽度:7.62 mmBase Number Matches:1

DS1487N/NOPB 数据手册

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Parameter Measurement Information (Continued)  
DS012920-13  
*Note: Non Terminated, Open Input only  
FIGURE 12.  
DS012920-14  
*Note: Non Terminated, Open Input only  
FIGURE 13.  
Pin Descriptions  
Pin I/O  
Name  
Function  
#
>
<
1
O
I
RO  
RE (Note 1)  
DE  
Receiver Output: If A B by 200 mV, RO will be high; If A B by 200 mV, RO will be low. RO will  
be high also if the inputs (A and B) are open (non-terminated).  
2
3
4
Receiver Output Enable: RO is enabled when RE (Note 1) is low; RO is in TRI-STATE when RE  
(Note 1) is high.  
I
Driver Output Enable: The driver outputs (A and B) are enabled when DE is high; they are in  
TRI-STATE when DE is low. Pins A and B also function as the receiver input pins (see below).  
I
DI  
Driver Input: A low on DI forces A low and B high while a high on DI forces A high and B low when  
the driver is enabled.  
5
6
NA  
I/O  
GND  
A
Ground  
Non-inverting Driver Output and Receiver Input pin. Driver output levels conform to RS-485 signaling  
levels.  
7
8
I/O  
NA  
B
Inverting Driver Output and Receiver Input pin. Driver output levels conform to RS-485 signaling  
levels.  
VCC  
Power Supply: 4.75V VCC 5.25V  
Applications Information  
The DS1487 is a low power transceiver designed for use in  
RS-485 multipoint applications. The DS1487 can transmit  
data up to 2.0 Mbps based on a ratio of driver transition time  
to the unit interval (bit time) of 10%. This maximum data rate  
may be further limited by the interconnecting media. The  
DS1487 also guarantees the driver’s output differential volt-  
age into a worst case load that models standard termination  
loads and 32 unit loads (=128 DS1487’s) referenced to the  
maximum common mode voltage extremes. With a minimum  
of 1.5V swing into this load, a 1.3V differential noise margin  
is supported along with the standard common mode rejec-  
tion range of the receivers.  
DS1487 provides a 1⁄  
common mode range of −7V to +12V. This allows up to 128  
transceivers (1⁄  
unit load) to be connected to the bus. The  
4
unit load to the RS-485 bus across the  
4
5
www.national.com  

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