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參數(shù)資料
| 型號(hào)： | LTC1485C |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Dual, Micropower, LinCMOS(TM) Voltage Comparator 8-PDIP 0 to 70 |
| 中文描述： | 差分總線收發(fā)器 |
| 文件頁(yè)數(shù)： | 10/12頁(yè) |
| 文件大小： | 257K |
| 代理商： | LTC1485C |
10
LTC1485
U
S
A
The termination resistors are used to generate a DC bias
which forces the receiver output to a known state, in this
case a logic 0. The first method consumes about 208mW
and the second about 8mW. The lowest power solution is
to use an AC termination with a pull-up resistor. Simply
swap the receiver inputs for data protocols ending in
logic 1.
O
PPLICATI
IU
U
Fault Protection
All of LTC’s RS485 products are protected against ESD
transients up to 2kV using the human body model
(100pF, 1.5k
). However, some applications need more
protection. The best protection method is to connect a
bidirectional TransZorb
from each line side pin to ground
(Figure 15).
A TransZorb is a silicon transient voltage suppressor that
has exceptional surge handling capabilities: fast response
1485 F15
120
DRIVER
A
B
time and low series resistance. They are available from
General Semiconductor Industries and come in a variety
of breakdown voltages and prices. Be sure to pick a
breakdown voltage higher than the common-mode volt-
age required for your application (typically 12V). Also,
don’t forget to check how much the added parasitic
capacitance will load down the bus.
Figure 15. ESD Protection with TransZorbs
U
S
A
O
PPLICATI
TYPICAL
TransZorb is a registered trademark of General Instruments, GSI
RS232 Receiver
1485 TA02
RECEIVER
RS232
IN
5.6k
RX
RS232 to RS485 Level Translator with Hysteresis
1485 TA03
120
DRIVER
A
B
220k
10k
RS232
IN
HYSTERESIS = 10k
V
A
– V
B
/
R
≈
19 (k
VOLT)/R
5.6k
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| LTC1485CN8 | 功能描述:IC TXRX DIFFERNTIAL BUS 8-DIP RoHS:否 類(lèi)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(lèi)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(lèi)型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤(pán) 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(lèi)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(lèi)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(lèi)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(chēng):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(lèi)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(lèi)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(lèi)型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤(pán) 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(lèi)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(lèi)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(lèi)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(chēng):296-19849-2 |
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