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ISL8483CPZ

更新时间： 2024-11-26 04:01:55
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英特矽尔 - INTERSIL /
页数 文件大小 规格书
16页 574K
描述
5V, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers

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ISL8483CPZ 数据手册

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ISL8483, ISL8485, ISL8488,  
ISL8489, ISL8490, ISL8491  
®
Data Sheet  
February 28, 2006  
FN6046.8  
5V, Low Power, High Speed or Slew Rate  
Limited, RS-485/RS-422 Trans ceivers  
Features  
• Specified for 10% Tolerance Supplies  
The Intersil RS-485/RS-422 devices are BiCMOS 5V  
powered, single transceivers that meet both the RS-485 and  
RS-422 standards for balanced communication. Unlike  
competitive devices, this Intersil family is specified for 10%  
tolerance supplies (4.5V to 5.5V).  
• Class 3 ESD Protection (HBM) on all Pins. . . . . . . . >7kV  
• High Data Rates. . . . . . . . . . . . . . . . . . . . . . up to 5Mbps  
• Slew Rate Limited Versions for Error Free Data  
Transmission at 250kbps (ISL8483, ISL8488, ISL8489)  
The ISL8483, ISL8488, and ISL8489 utilize slew rate limited  
drivers which reduce EMI, and minimize reflections from  
improperly terminated transmission lines, or unterminated  
stubs in multidrop and multipoint applications.  
• Single Unit Load Allows up to 32 Devices on the Bus  
• 1nA Low Current Shutdown Mode (ISL8483)  
• Low Quiescent Current:  
- 160µA (ISL8483, ISL8488, ISL8489)  
- 500µA (ISL8485, ISL8490, ISL8491)  
Data rates up to 5Mbps are achievable by using the  
ISL8485, ISL8490, or ISL8491, which feature higher slew  
rates.  
• -7V to +12V Common Mode Input Voltage Range  
• Three State Rx and Tx Outputs (Except ISL8488,  
ISL8490)  
All devices present a “single unit load” to the RS-485 bus,  
which allows up to 32 transceivers on the network.  
• 30ns Propagation Delays, 5ns Skew (ISL8485, ISL8490,  
ISL8491)  
Receiver (Rx) inputs feature a “fail-safe if open” design,  
which ensures a logic high Rx output if Rx inputs are  
floating.  
• Full Duplex and Half Duplex Pinouts  
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.  
• Operate from a Single +5V Supply (10% Tolerance)  
• Current Limiting and Thermal Shutdown for driver  
Overload Protection  
• Pb-Free Plus Anneal Available (RoHS Compliant)  
The ISL8488 - 91 are configured for full duplex (separate Rx  
input and Tx output pins) applications. The ISL8488 and  
ISL8490 are offered in space saving 8 lead packages for  
applications not requiring Rx and Tx output disable functions  
(e.g., point-to-point). Half duplex configurations (ISL8483,  
ISL8485) multiplex the Rx inputs and Tx outputs to allow  
transceivers with Rx and Tx disable functions in 8 lead  
packages.  
Applications  
• Factory Automation  
• Security Networks  
• Building Environmental Control Systems  
• Industrial/Process Control Networks  
• Level Translators (e.g., RS-232 to RS-422)  
• RS-232 “Extension Cords”  
TABLE 1. SUMMARY OF FEATURES  
NO. OF DEVICES DATARATE SLEW-RATE RECEIVER/  
PART  
NUMBER  
HALF/FULL  
DUPLEX  
QUIESCENT LOW POWER  
PIN  
ALLOWED ON BUS  
(Mbps)  
0.25  
5
LIMITED?  
DRIVER ENABLE?  
I
(µA) SHUTDOWN? COUNT  
CC  
160  
ISL8483  
ISL8485  
ISL8488  
ISL8489  
ISL8490  
ISL8491  
Half  
Half  
Full  
Full  
Full  
Full  
32  
32  
32  
32  
32  
32  
Yes  
Yes  
Yes  
No  
Yes  
No  
No  
No  
No  
No  
8
8
No  
500  
160  
160  
500  
500  
0.25  
0.25  
5
Yes  
8
Yes  
Yes  
No  
14  
8
No  
5
No  
Yes  
14  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.  
Copyright © Intersil Americas Inc. 2003, 2005, 2006. All Rights Reserved.  
All other trademarks mentioned are the property of their respective owners.  
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