数据搜索系统，热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

预览 PDF HTML

STR485E 数据表(PDF) 5 Page - STMicroelectronics

部件名 STR485E
功能描述  3.3 V RS485 compatible with 1.8 V I/Os and selectable speed 20 Mbps or 250kbps
PDF  26 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STR485E 数据表(HTML) 5 Page - STMicroelectronics

  STR485E Datasheet HTML 1Page - STMicroelectronics STR485E Datasheet HTML 2Page - STMicroelectronics STR485E Datasheet HTML 3Page - STMicroelectronics STR485E Datasheet HTML 4Page - STMicroelectronics STR485E Datasheet HTML 5Page - STMicroelectronics STR485E Datasheet HTML 6Page - STMicroelectronics STR485E Datasheet HTML 7Page - STMicroelectronics STR485E Datasheet HTML 8Page - STMicroelectronics STR485E Datasheet HTML 9Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 5 / 26 page
background image
Figure 5. Example of typical application
B
B
B
B
A
A
A
A
GND
GND
GND
GND
VCC
VCC
VCC
VCC
D
D
D
D
DE
DE
DE
DE
R
R
R
R
RE
RE
RE
RE
VL
VL
VL
VL
SLR
SLR
SLR
SLR
RT
120Ω
RT
120Ω
Table 2. Driver truth table
INPUT D
ENABLE DE
OUTPUT A
OUTPUT B
Function
H
H
H
L
Actively drive bus high
L
H
L
H
Actively drive bus low
X
L
Z
Z
Driver disabled
X
Open
Z
Z
Driver disabled by default
Open
H
H
L
Actively drive bus high by default
Table 3. Receiver truth table
Differential input VID = VA -VB
ENABLE RE
OUTPUT R
Function
VID > VIT+
L
H
Receive valid bus high
VIT- < VID < VIT+
L
?
Indeterminate bus state
VID < VIT-
L
L
Receive valid bus low
X
H
Z
Receiver disabled
X
OPEN
Z
Receiver disabled by default
Open-circuit bus
L
H
Fail safe high output
Short-circuit bus
L
H
Fail safe high output
Idle (terminated) bus
L
H
Fail safe high output
Table 4. Speed selection, SLR pin configuration
SLR
Data rate
Typical tr / tf
VL
250 kbps
200 ns
GND or OPEN
20 Mbps
7 ns
STR485E
Truth tables
DS13051 - Rev 3
page 5/26



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26


数据表 下载

Go To PDF Page


链接网址



ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   数据表链接    |   链接交换   |   制造商名单
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com