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ISL83483

更新时间： 2024-11-30 14:57:43
品牌 Logo 应用领域
瑞萨 - RENESAS /
页数 文件大小 规格书
19页 1043K
描述
3.3V, Half Duplex, 250kbps Slew Rate Limited, RS-485/RS-422 Transceiver

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ISL83483 数据手册

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DATASHEET  
ISL83483, ISL83485, ISL83488, ISL83490, ISL83491  
3.3V, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers  
FN6052  
Rev.5.00  
Nov 21, 2018  
These Renesas RS-485/RS-422 devices are BiCMOS 3.3V  
powered, single transceivers that meet both the RS-485 and  
Features  
• Operate from a single +3.3V supply (10% tolerance)  
• Interoperable with 5V logic  
RS-422 standards for balanced communication. Unlike  
competitive devices, this Renesas family is specified for 10%  
tolerance supplies (3V to 3.6V).  
• High data rates. . . . . . . . . . . . . . . . . . . . . . up to 10Mbps  
• Single unit load allows up to 32 devices on the bus  
The ISL83483 and ISL83488 use slew rate limited drivers  
which reduce EMI, and minimize reflections from improperly  
terminated transmission lines, or unterminated stubs in  
multidrop and multipoint applications.  
• Slew rate limited versions for error free data transmission  
(ISL83483, ISL83488) . . . . . . . . . . . . . . . . .up to 250kbps  
• Low current Shutdown mode (ISL83483, ISL83485,  
ISL83491). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15nA  
Data rates up to 10Mbps are achievable by using the  
ISL83485, ISL83490, or ISL83491, which feature higher  
slew rates.  
• -7V to +12V common-mode input voltage range  
• Three-state Rx and Tx outputs (except ISL83488,  
ISL83490)  
Logic inputs (for example, DI and DE) accept signals in  
excess of 5.5V, making them compatible with 5V logic  
families.  
• 10ns propagation delay, 1ns skew (ISL83485, ISL83490,  
ISL83491)  
Receiver (Rx) inputs feature a “fail-safe if open” design,  
which ensures a logic high output if Rx inputs are floating. All  
devices present a “single unit load” to the RS-485 bus, which  
allows up to 32 transceivers on the network.  
• Full duplex and half duplex pinouts  
• Current limiting and thermal shutdown for driver overload  
protection  
Driver (Tx) outputs are short-circuit protected, even for  
voltages exceeding the power supply voltage. Additionally,  
on-chip thermal shutdown circuitry disables the Tx outputs to  
prevent damage if power dissipation becomes excessive.  
• Pb-free (RoHS compliant)  
Applications  
• Factory automation  
The ISL83488, ISL83490, and ISL83491 are configured for  
full duplex (separate Rx input and Tx output pins)  
applications. The ISL83488 and ISL83490 are offered in  
space saving 8 Ld packages for applications not requiring Rx  
and Tx output disable functions (for example, point-to-point  
and RS-422). Half duplex configurations (ISL83483,  
ISL83485) multiplex the Rx inputs and Tx outputs to provide  
transceivers with Rx and Tx disable functions in 8 Ld  
packages.  
• Security networks  
• Building environmental control systems  
• Industrial/process control networks  
• Level translators (for example, RS-232 to RS-422)  
• RS-232 “Extension Cords”  
Related Literature  
For a full list of related documents, visit our website:  
• ISL83483, ISL83485, ISL83488, ISL83490, ISL83491  
device pages  
TABLE 1. SUMMARY OF FEATURES  
SLEW-RATE RECEIVER/DRIVER QUIESCENT I  
PART  
NUMBER  
HALF/FULL  
DUPLEX  
DATA RATE  
(Mbps)  
LOW POWER  
SHUTDOWN?  
CC  
LIMITED?  
ENABLE?  
(mA)  
0.65  
0.65  
0.65  
0.65  
0.65  
PIN COUNT  
ISL83483  
ISL83485  
ISL83488  
ISL83490  
ISL83491  
Half  
Half  
Full  
Full  
Full  
0.25  
10  
Yes  
No  
Yes  
Yes  
Yes  
No  
8
8
Yes  
0.25  
10  
Yes  
No  
No  
8
No  
No  
8
10  
No  
Yes  
Yes  
14  
FN6052 Rev.5.00  
Nov 21, 2018  
Page 1 of 19  
1234567...19

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