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參數(shù)資料
| 型號(hào)： | LT1485 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Differential Bus Transceiver |
| 中文描述： | 差分總線收發(fā)器 |
| 文件頁(yè)數(shù)： | 7/12頁(yè) |
| 文件大?。?/td> | 257K |
| 代理商： | LT1485 |
7
LTC1485
TI
W
E WAVEFOR
S
UG
WITCHI
W
S
Figure 9. Typical Connection
1.5V
0V
t
ZL
f = 1MHz; t
r
≤
10ns; t
f
≤
10ns
V
OL
3V
V
OH
1485 F08
1.5V
t
ZH
RO
RO
1.5V
t
LZ
0.5V
0.5V
t
HZ
OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
1.5V
0V
5V
RE
Figure 8. Receiver Enable and Disable Times
U
S
A
Typical Application
A typical connection of the LTC1485 is shown in Figure 9.
Two twisted pair wires connect up to 32 driver/receiver
pairs for half duplex data transmission. There are no
restrictions on where the chips are connected to the wires
and it isn’t necessary to have the chips connected at the
ends. However, the wires must be terminated only at the
O
PPLICATI
U
U
ends with a resistor equal to their characteristic imped-
ance, typically 120
. The input impedance of a receiver is
typically 20k to GND, or 0.6 unit RS485 load, so in practice
50 to 60 transceivers can be connected to the same wires.
The optional shields around the twisted pair help reduce
unwanted noise, and are connected to GND at one end.
8
7
120
120
3
4
RX
DX
2
1
1485 F09
LTC1485
RX
DX
4
1
2
3
LTC1485
RECEIVER
RX
DX
7
4
1
2
3
LTC1485
8
RECEIVER
DRIVER
RECEIVER
DRIVER
DRIVER
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC1485 | Differential Bus Transceiver |
| LTC1485C | Dual, Micropower, LinCMOS(TM) Voltage Comparator 8-PDIP 0 to 70 |
| LTC1485CN8 | Differential Bus Transceiver |
| LTC1485CS8 | Differential Bus Transceiver |
| LTC1485I | Differential Bus Transceiver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1490 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual and Quad Micropower Rail-to-Rail Input and Output Op Amps |
| LT1490A | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual/Quad Over-The-Top Micropower Rail-to-Rail Input and Output Op Amps |
| LT1490A_1 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual/Quad Over-The-Top Micropower Rail-to-Rail Input and Output Op Amps |
| LT1490ACDD | 功能描述:IC OPAMP R-R IN/OUT DUAL 8DFN RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:Over-The-Top® 其它有關(guān)文件:Automotive Product Guide 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 放大器類型:通用 電路數(shù):1 輸出類型:滿擺幅 轉(zhuǎn)換速率:3 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:1pA 電壓 - 輸入偏移:70µV 電流 - 電源:2.5mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 5.5 V，±1.35 V ~ 2.75 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-6 包裝:Digi-Reel® 其它名稱:MAX4475AUT#TG16DKR |
| LT1490ACDD#PBF | 功能描述:IC OPAMP R-R IN/OUT DUAL 8DFN RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:Over-The-Top® 標(biāo)準(zhǔn)包裝:2,500 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:- 轉(zhuǎn)換速率:0.6 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:45nA 電壓 - 輸入偏移:2000µV 電流 - 電源:1.4mA 電流 - 輸出 / 通道:40mA 電壓 - 電源，單路/雙路(±):3 V ~ 32 V，±1.5 V ~ 16 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) 其它名稱:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
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