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參數(shù)資料
| 型號(hào)： | 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)： | 2/13頁 |
| 文件大?。?/td> | 249K |
| 代理商： | LMS1487INA |
Connection Diagram
8-Pin SOIC / DIP
20053002
Top View
Truth Table
DRIVER SECTION
RE
X
X
X
DE
H
H
L
DI
H
L
X
A
H
L
Z
B
L
H
Z
RECEIVER SECTION
RE
DE
L
L
X
L
A-B
≥
+0.2V
≤
0.2V
X
OPEN
*
RO
H
L
Z
H
L
L
H
L
Note:
*
= Non Terminated, Open Input only
X = Irrelevant
Z = TRI-STATE
H = High level
L = Low level
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 200mV, 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-STATE when RE is high
Driver Output Enable: The driver outputs (A and B) are enabled when DE is high; they are in
TRI-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
N/A
I/O
GND
A
7
I/O
B
8
N/A
V
CC
L
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMS1487INA | 制造商:Texas Instruments 功能描述:IC BUS TRANSCEIVER 1487 DIP8 5V |
| LMS1585 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:5A and 3A Low Dropout Fast Response Regulators |
| LMS1585A | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:5A and 3A Low Dropout Fast Response Regulators |
| 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(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LMS1585ACS-1.5/NOPB | 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(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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