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參數(shù)資料
| 型號： | LMS485E |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | RS-485 |
| 英文描述： | Low Power RS-485 / RS-422 Differential Bus Transceiver |
| 中文描述： | 低功耗RS - 485 / RS - 422差分總線收發(fā)器 |
| 文件頁數(shù)： | 3/13頁 |
| 文件大?。?/td> | 248K |
| 代理商： | LMS485E |
Pin Descriptions
Pin
#
I/O
1
Name
RO
Function
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).
Receiver Output Enable: RO is enabled when RE
*
is low; RO is in TRI-STATEwhen RE
*
is high
Driver Output Enable: The driver outputs (A and B) are enabled when DE is high; they are in
TRI-STATETRI-STATE
when DE is low. Pins A and B also function as the receiver input pins
(see below)
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
Ground
Non-inverting Driver Output and Receiver Input pin. Driver output levels conform to RS-485
signaling levels
Inverting Driver Output and Receiver Input pin. Driver Output levels conform to RS-485 signaling
levels
Power Supply: 4.75V
≤
V
CC
≤
5.25V
O
2
3
I
I
RE
*
DE
4
I
DI
5
6
NA
I/O
GND
A
7
I/O
B
8
NA
V
CC
Ordering Information
Package
Part Number
LMS485ECM
LMS485ECMX
LMS485EIM
LMS485EIMX
LMS485ECNA
LMS485EINA
Package Marking
Transport Media
95 Units/Rail
2.5k Units Tape and Reel
95 Units/Rail
2.5k Units Tape and Reel
40 Units/Rail
40 Units/Rail
NSC Drawing
8-Pin SOIC
LMS485ECM
M08A
LMS485EIM
8-Pin DIP
LMS485ECNA
LMS485EINA
N08E
L
www.national.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMS485ECM | 制造商:Texas Instruments 功能描述:LO POWER 5V RS422/485 XCVR 15KV485 |
| LMS485ECMX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Low Power RS-485 / RS-422 Differential Bus Transceiver |
| LMS485ECNA | 制造商:Texas Instruments 功能描述:IC LO POWER 5V RS422/485 XCVR 15KV |
| LMS485ECNA/NOPB | 制造商:Texas Instruments 功能描述:Single Transmitter/Receiver RS-422/RS-485 8-Pin PDIP Rail |
| LMS485EIM | 制造商:Texas Instruments 功能描述:LO POWER 5V RS422/485 XCVR 15KV 485 |
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