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參數(shù)資料
| 型號(hào)： | LTC1485 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Differential Bus Transceiver |
| 中文描述： | 差分總線收發(fā)器 |
| 文件頁數(shù)： | 7/12頁 |
| 文件大?。?/td> | 257K |
| 代理商： | LTC1485 |
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 |
|---|---|
| LTC1485C | Dual, Micropower, LinCMOS(TM) Voltage Comparator 8-PDIP 0 to 70 |
| LTC1485CN8 | Differential Bus Transceiver |
| LTC1485CS8 | Differential Bus Transceiver |
| LTC1485I | Differential Bus Transceiver |
| LTC1485IS8 | Differential Bus Transceiver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1485CN8 | 功能描述:IC TXRX DIFFERNTIAL BUS 8-DIP RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:121 系列:- 類型:收發(fā)器 驅(qū)動(dòng)器/接收器數(shù):1/1 規(guī)程:RS422，RS485 電源電壓:3 V ~ 3.6 V 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-DFN（3x3） 包裝:管件 |
| LTC1485CN8#PBF | 功能描述:IC TXRX DIFFERNTIAL BUS 8-DIP 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:RS-232 & USB Transceiver 標(biāo)準(zhǔn)包裝:2,000 系列:- 類型:收發(fā)器 驅(qū)動(dòng)器/接收器數(shù):1/1 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:16-SSOP 包裝:帶卷 (TR) 其它名稱:296-19849-2 |
| LTC1485CN8PBF | 制造商:Linear Technology 功能描述:RS485 differential transceiverLTC1487CN8 |
| LTC1485CS8 | 功能描述:IC TXRX DIFFERNTIAL BUS 8-SOIC RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:121 系列:- 類型:收發(fā)器 驅(qū)動(dòng)器/接收器數(shù):1/1 規(guī)程:RS422，RS485 電源電壓:3 V ~ 3.6 V 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-DFN（3x3） 包裝:管件 |
| LTC1485CS8#PBF | 功能描述:IC TXRX DIFFERNTIAL 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:RS-232 & USB Transceiver 標(biāo)準(zhǔn)包裝:2,000 系列:- 類型:收發(fā)器 驅(qū)動(dòng)器/接收器數(shù):1/1 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:16-SSOP 包裝:帶卷 (TR) 其它名稱:296-19849-2 |
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