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參數(shù)資料
| 型號： | LMS1487ECMX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | 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)： | 5/13頁 |
| 文件大小： | 248K |
| 代理商： | LMS1487ECMX |
Electrical Characteristics
(Continued)
Over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
Symbol
V
OL
Parameter
Conditions
Min
Typ
Max
0.4
Units
V
CMOS Low-level Output
Voltage
Tristate Output Leakage
Current
Input Resistance
Power Supply Current
I
CC
Supply Current
I
OL
= 4 mA, V
ID
= 200 mV
I
OZR
0.4V
≤
V
O
≤
+ 2.4V
±
1
μA
R
IN
7V
≤
V
CM
≤
+12V
48
k
DE = V
CC,
RE = GND or V
CC
DE = 0V, RE = GND or V
CC
V
O
= high, 7V
≤
V
CM
≤
+12V
400
360
660
560
250
μA
I
OSD1
Driver Short-circuit Output
Current
Driver Short-circuit Output
Current
Receiver Short-circuit Output
Current
Switching Characteristics
Driver
T
PLH
,
T
PHL
Output
T
SKEW
Driver Output Skew
T
R
,
T
F
T
ZH
,
T
ZL
Time
T
HZ
,
T
LZ
Receiver
T
PLH
,
T
PHL
Output
T
SKEW
Receiver Output Skew
T
ZH
,
T
ZL
T
HZ
,
T
LZ
F
MAX
Maximum Data Rate
mA
I
OSD2
V
O
= low, 7V
≤
V
CM
≤
+12V
250
mA
I
OSR
0 V
≤
V
O
≤
V
CC
95
mA
Propagation Delay Input to
R
L
= 54
, C
L
= 100 pF
10
40
80
ns
R
L
= 54
, C
L
= 100 pF
R
L
= 54
, C
L
= 100 pF
5
10
10
40
ns
ns
Driver Rise and Fall Time
3
Driver Enable to Ouput Valid
C
L
= 100 pF
25
70
ns
Driver Output Disable Time
C
L
= 15 pF
35
70
ns
Propagation Delay Input to
R
L
= 54
, C
L
= 100 pF
20
90
200
ns
R
L
= 54
, C
L
= 100 pF
C
L
= 15 pF
5
20
ns
ns
Receiver Enable Time
50
Receiver Disable Time
C
L
= 15 pF
20
50
ns
2.5
Mbps
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.
Note 2:
All voltage values, except differential I/O bus voltage, are with respect to the network ground terminal.
Note 3:
The maximum power dissipation is a function of T
,
θ
, and T
. The maximum allowable power dissipation at any ambient temperature, T
A
, is
P
D
= (T
J(MAX)
- T
A
)/
θ
JA
. All numbers apply for packages soldered directly into a PC board.
Note 4:
ESD rating based upon human body model, 100 pF discharged through 1.5 k
.
Note 5:
Voltage limits apply to DI, DE, RE pins.
Note 6:
Differential input/output bus voltage is measured at the non-inverting terminal A with respect to the inverting terminal B.
Note 7:
|
V
OD
| and |
V
OC
| are changes in magnitude of V
OD
and V
OC
, respectively when the input changes from high to low levels.
Note 8:
Peak current
L
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMS1487ECMX/NOPB | 制造商:Texas Instruments 功能描述:Single Transmitter/Receiver RS-422/RS-485 8-Pin SOIC N T/R |
| LMS1487ECNA | 制造商:Texas Instruments 功能描述:RS422/485 5V BUS XCVR 15KV, 1487 |
| LMS1487ECNA/NOPB | 功能描述:TXRX RS422/485 DIFF BUS 8DIP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:25 系列:- 類型:收發(fā)器 驅(qū)動(dòng)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(yīng)商設(shè)備封裝:16-PDIP 包裝:管件 |
| LMS1487EIM | 制造商:Texas Instruments 功能描述:RS422/485 5V BUS XCVR 15KV 1487 |
| LMS1487EIM/NOPB | 功能描述:TXRX RS422/485 DIFF BUS 8-SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:25 系列:- 類型:收發(fā)器 驅(qū)動(dòng)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(yīng)商設(shè)備封裝:16-PDIP 包裝:管件 |
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