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參數(shù)資料
| 型號： | LMS1487INA |
| 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, DIP8 |
| 封裝： | DIP-8 |
| 文件頁數(shù)： | 4/13頁 |
| 文件大?。?/td> | 249K |
| 代理商： | LMS1487INA |
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
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| LMS1585ACS-1.5 | 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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