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參數(shù)資料
| 型號： | LMS1487CM |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | 5V Low Power RS-485 / RS-422 Differential Bus Transceiver |
| 中文描述： | LINE TRANSCEIVER, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數(shù)： | 4/13頁 |
| 文件大小： | 249K |
| 代理商： | LMS1487CM |
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(Note 1)
Supply Voltage, V
CC
(Note 2)
Input Voltage, V
IN
(DI, DE, or RE)
Voltage Range at Any Bus Terminal
(AB)
Receiver Outputs
Package Thermal Impedance,
θ
JA
SOIC
DIP
Junction Temperature (Note 3)
Operating Free-Air Temperature
Range, T
A
Commercial
Industrial
Storage Temperature Range
Soldering Information
Infrared or Convection (20 sec.)
Lead Temperature
7V
0.3V to V
CC
+ 0.3V
7V to 12V
0.3V to V
CC
+ 0.3V
125C/W
88C/W
150C
0C to 70C
40C to 85C
65C to 150C
235C
260C
ESD Rating (Note 4)
7kV
Operating Ratings
Min Nom Max
4.75
5.0
7
Supply Voltage, V
CC
Voltage at any Bus Terminal
(Separately or Common Mode)
V
IN
or V
IC
High-Level Input Voltage, V
IH
(Note 5)
Low-Level Input Voltage, V
IL
(Note 5)
Differential Input Voltage, V
ID
(Note 6)
High-Level Output
Driver, I
OH
Receiver, I
OH
Low-Level Output
Driver, I
OL
Receiver, I
OL
5.25
12
V
V
2
V
0.8
V
±
12
V
150 mA
42
mA
80
26
mA
mA
Electrical Characteristics
Over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
Symbol
Driver Section
| V
OD1
|
| V
OD2
|
Parameter
Conditions
Min
Typ
Max
Units
Differential Output Voltage
Differential Output Voltage
R =
∞
(
Figure 1
)
R = 50
(
Figure 1
) ,RS-422
R = 27
(
Figure 1
) ,RS-485
R = 27
or 50
(
Figure 1
) , (Note 7)
5.25
V
V
2.0
1.5
5.0
0.2
V
OD
Change in Magnitude of
Driver Differential Output
Voltage for Complementary
Output States
Common-Mode Output
Voltage
Change in Magnitude of
Driver Common-Mode Output
Voltage for Complementary
Output States
CMOS Inout Logic Threshold
High
CMOS Input Logic Threshold
Low
Logic Input Current
Receiver Section
V
V
OC
R = 27
or 50
(
Figure 1
)
3.0
V
V
OC
R = 27
or 50
(
Figure 1
), (Note 7)
0.2
V
V
IH
DE, DI, RE
2.0
V
V
IL
DE, DI, RE
0.8
V
I
IN1
DE, DI, RE
±
2
μA
I
IN2
Input Current (A, B)
DE = 0V, V
CC
= 0V or 5.25V
V
IN
= 12V
V
IN
= 7V
7V
≤
V
CM
≤
+ 12V
0.25
mA
0.2
+0.2
V
TH
Differential Input Threshold
Voltage
0.2
V
V
TH
Input Hysteresis Voltage
(V
TH+
V
TH
)
V
CM
= 0
95
mV
L
www.national.com
4
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相關代理商/技術參數(shù) |
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|---|---|
| LMS1487CM | 制造商:Texas Instruments 功能描述:BUS TRANSCEIVER 1487 SOIC8 5V |
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| LMS1487CMX/NOPB | 功能描述:TXRX RS422/485 DIFF BUS 8-SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發(fā)器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:25 系列:- 類型:收發(fā)器 驅動器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:4.5 V ~ 5.5 V 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 供應商設備封裝:16-PDIP 包裝:管件 |
| LMS1487CNA | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述:IC BUS TRANSCEIVER 1487 DIP8 5V |
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