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參數(shù)資料
| 型號： | ISL41334IRZ-T7A |
| 廠商： | Intersil |
| 文件頁數(shù)： | 6/28頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TXRX RS232/485 DL 2PRT 40QFN |
| 產(chǎn)品培訓模塊： | Solutions for Industrial Control Applications |
| 標準包裝： | 250 |
| 類型： | 收發(fā)器 |
| 驅(qū)動器/接收器數(shù)： | 2/2 |
| 規(guī)程： | RS232，RS422，RS485 |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 40-VFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 40-QFN 裸露焊盤（6x6） |
| 包裝： | 帶卷 (TR) |
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14
FN6202.3
November 21, 2007
RS-422 is typically a point-to-point (one driver talking to one
receiver on a bus), or a point-to-multipoint (multidrop)
standard that allows only one driver and up to 10 receivers
on each bus. Because of the one driver per bus limitation,
RS-422 networks use a two bus, full duplex structure for
bidirectional communication, and the Rx inputs and Tx
outputs (no tri-state required) connect to different busses, as
shown in Figure 10.
Conversely, RS-485 is a true multipoint standard, which
allows up to 32 devices (any combination of drivers- must be
tri-statable - and receivers) on each bus. Now bidirectional
communication takes place on a single bus, so the Rx inputs
and Tx outputs of a port connect to the same bus lines, as
shown in Figure 9. Each port set to RS-485 /422 mode
includes one Rx and one Tx.
RS-232 is a point-to-point, singled ended (signal voltages
referenced to GND) communication protocol targeting fairly
short (<150’, 46m) and low data rate (<1Mbps) applications.
Each port contains two transceivers (2 Tx and 2 Rx) in
RS-232 mode.
Protocol selection is handled via a logic pin (SELX) for each
port.
.
ISL81334, ISL41334 Advantages
These dual protocol ICs offer many parametric
improvements versus those offered on competing dual
protocol devices. Some of the major improvements are:
15kV Bus Pin ESD - Eases board level requirements
2.7V Diff VOUT - Better Noise immunity and/or distance
Full Failsafe RS-485 Rx - Eliminates bus biasing
Selectable RS-485 Data Rate - Up to 20Mbps, or slewrate
limited for low EMI and fewer termination issues
High RS-232 Data Rate - >460kbps
Lower Tx and Rx Skews - Wider, consistent bit widths
Lower ICC - Max ICC is 2x to 4x lower than competition
Flow-Thru Pinouts - Tx, Rx bus pins on one side/logic pins
on the other, for easy routing to connector/UART
Smaller (SSOP and QFN) and Pb-free Packaging.
FIGURE 9. TYPICAL HALF DUPLEX RS-485 NETWORK
FIGURE 10. TYPICAL RS-422 NETWORK
0.1
μF
+
D
R
VCC
GND
RA
RXEN *
DE
DY
Y
Z
+5V
RT
0.1
μF
+
D
R
VCC
GND
RO
RE
DE
DI
A/Y
B/Z
+5V
0.1
μF
+
D
VCC
GND
RO
RE
DE
DI
A/Y
B/Z
+5V
R
RT
ISL81334, ISL41334
GENERIC 1/2 DUPLEX 485 XCVR
Tx/Rx
* QFN ONLY
A
B
0.1
μF
+
D
R
VCC
GND
RA
DE
DY
B
A
+5V
0.1
μF
+
D
R
VCC
GND
RO
DI
A
Z
+5V
0.1
μF
+
VCC
GND
RO
RE
+5V
R
RT
ISL81334, ISL41334 (MASTER)
GENERIC 422 Rx (SLAVE)
GENERIC FULL DUPLEX 422 XCVR (SLAVE)
A
B
RT
Y
Z
Y
B
1k
Ω
OR NC
ISL81334, ISL41334
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL41387 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:【15kV ESD Protected, 5V, Dual Protocol (RS-232/RS-485) Transceivers |
| ISL41387EVAL1Z | 功能描述:EVALUATION BOARD FOR ISL41387 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 標準包裝:1 系列:PCI Express® (PCIe) 主要目的:接口，收發(fā)器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要屬性:- 次要屬性:- 已供物品:板 |
| ISL41387IRZ | 功能描述:IC TXRX DUAL PROTOCAL ESD 40-QFN RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 類型:發(fā)射器 驅(qū)動器/接收器數(shù):4/0 規(guī)程:RS422，RS485 電源電壓:4.75 V ~ 5.25 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) |
| ISL41387IRZ-T | 功能描述:IC TXRX DUAL PROTOCAL ESD 40-QFN RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 類型:發(fā)射器 驅(qū)動器/接收器數(shù):4/0 規(guī)程:RS422，RS485 電源電壓:4.75 V ~ 5.25 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) |
| ISL4221 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:QFN Packaged, +/-15kV ESD Protected, +2.7V to +5.5V, 150Nanoamp, 250kBps, RS-232 Transmitters/Receivers |
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