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SN75ALS085NT-10 PDF预览

SN75ALS085NT-10

更新时间： 2024-11-08 13:32:15
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
18页 295K
描述
DUAL LINE TRANSCEIVER, PDIP24

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SN75ALS085NT-10 技术参数

生命周期：Obsolete包装说明：DIP,
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.73
Is Samacsys：N差分输出：YES
驱动器位数：1输入特性：DIFFERENTIAL SCHMITT TRIGGER
接口集成电路类型：LINE TRANSCEIVER接口标准：IEEE-802.3
JESD-30 代码：R-PDIP-T24长度：31.64 mm
功能数量：2端子数量：24
最高工作温度：70 °C最低工作温度：
封装主体材料：PLASTIC/EPOXY封装代码：DIP
封装形状：RECTANGULAR封装形式：IN-LINE
认证状态：Not Qualified最大接收延迟：15 ns
接收器位数：1座面最大高度：5.08 mm
最大供电电压：5.25 V最小供电电压：4.75 V
标称供电电压：5 V表面贴装：NO
技术：TTL温度等级：COMMERCIAL
端子形式：THROUGH-HOLE端子节距：2.54 mm
端子位置：DUAL最大传输延迟：15 ns
宽度：7.62 mmBase Number Matches：1

SN75ALS085NT-10 数据手册

 浏览型号SN75ALS085NT-10的Datasheet PDF文件第2页浏览型号SN75ALS085NT-10的Datasheet PDF文件第3页浏览型号SN75ALS085NT-10的Datasheet PDF文件第4页浏览型号SN75ALS085NT-10的Datasheet PDF文件第5页浏览型号SN75ALS085NT-10的Datasheet PDF文件第6页浏览型号SN75ALS085NT-10的Datasheet PDF文件第7页 
SN75ALS085  
LAN ACCESS UNIT INTERFACE DUAL DRIVER/RECEIVER  
SLLS054D – APRIL 1989 – REVISED OCTOBER 2001  
DW OR NT PACKAGE  
Meets or Exceeds the Requirements of IOS  
8802.3:1989 and ANSI/IEEE Std 802.3-1988  
(TOP VIEW)  
Interdevice Loopback Paths for System  
Testing  
TXI1  
TXEN1  
LOOP1  
GND  
TXO1  
TXO1  
1
24  
23  
22  
21  
20  
2
Squelch Function Implemented on the  
Receiver Inputs  
V
3
CC  
RXI1  
RXI1  
4
RXEN1  
RXO1  
RXO2  
RXEN2  
GND  
5
Drives a Balanced 78-Ω Load  
6
19 GND  
Transformer Coupling Not Required in  
System  
7
18  
17  
16  
15  
14  
13  
GND  
RXI2  
RXI2  
8
Power-Up/Power-Down Protection (Glitch  
Free)  
9
10  
11  
12  
LOOP2  
TXEN2  
TXI2  
V
CC  
Isolated Ground Pins for Reduced Noise  
Coupling  
TXO2  
TXO2  
Fault-Condition Protection Built Into the  
Device  
Driver Inputs Are Level-Shifted ECL  
Compatible  
Package Options Include Plastic  
Small-Outline (DW) Package and Standard  
Plastic (NT) DIP  
description  
The SN75ALS085 is a high-speed, advanced low-power Schottky, dual-channel driver/receiver device  
designed for use in the AUI of ANSI/IEEE Std 802.3-1988. The two drivers on the device drive a 78-Ω balanced,  
terminated twisted-pair transmission line up to a maximum length of 50 meters. In the off (idle) state, the drivers  
maintain minimal differential output voltage on the twisted-pair line and, at the same time, remain within the  
required output common-mode range.  
With the driver enable (TXEN) high, upon receiving the first falling edge into the driver input, the differential  
outputs rise to full-amplitude output levels within 25 ns. The output amplitude is maintained for the remainder  
of the packet. After the last positive packet edge is transmitted into the driver, the driver maintains a minimum  
of 70% full differential output for a minimum of 200 ns, then decays to a minimum level for the reset (idle)  
condition within 8 µs. Disabling the driver by taking the driver enable low also forces the output into the idle  
conditionafterthenormal8-µstimeout. Whileoperating, thedriversareabletowithstandasetoffaultconditions  
and not suffer damage due to the faults being applied. The drivers power up in the idle state to ensure that no  
activity is placed on the twisted-pair cable, which could be interpreted as network traffic.  
The line receiver squelch function interfaces to a differential twisted-pair line terminated external to the device.  
The receiver squelch circuit allows differential receive signals to pass through, as long as the input amplitude  
and pulse duration are greater than the minimum squelch threshold. This ensures a good signal-to-noise ratio  
while the data path is active and prevents system noise from causing false data transitions during line shutdown  
and line-idle conditions. The receiver outputs (RXO) default to a high level and the receiver-enable (RXEN)  
outputs default to a low level while the squelch function is blocking the data path through the receiver (idle). The  
linereceiversquelchbecomesactivewithin50nswhentheinputsquelchthresholdisexceeded. RXENisdriven  
high when the squelch circuit allows data to pass through the receiver. The receiver squelch circuit also can  
withstand a set of fault conditions while operating, without causing permanent damage to the device.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
Copyright 2001, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...18

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