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SN65HVD37_1207 PDF预览

SN65HVD37_1207

更新时间： 2024-11-17 12:14:59
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德州仪器 - TI 驱动器
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16页 715K
描述
Low-Power 3.3V-Supply Full-Duplex RS-485 Driver/Receiver

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SN65HVD37_1207 数据手册

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SN65HVD37  
www.ti.com  
SLLSE92 A –OCTOBER 2011–REVISED NOVEMBER 2011  
Low-Power 3.3V-Supply Full-Duplex RS-485 Driver/Receiver  
Check for Samples: SN65HVD37  
1
FEATURES  
DESCRIPTION  
The SN65HVD37 combines a robust differential driver  
•
•
•
Low-Current Standby Mode: <1 μA Typical  
Operational Quiescent Current < 1 mA  
and receiver with high noise immunity for  
a
demanding industrial applications. The driver  
differential outputs and the receiver differential inputs  
are separate pins, to form a bus port for full-duplex  
(four-wire) communications. The driver and receiver  
can be independently enabled, and feature a wide  
common-mode voltage range, making this device  
suitable for multi-point applications over long cable  
runs. The SN65HVD37 is characterized over the  
temperature range of -40ºC to 85 ºC.  
High Receiver Hysteresis for Noise Immunity  
(60 mV Typical)  
•
•
•
1/8 Unit-Load (Up to 256 Nodes on the Bus)  
Bus-pin ESD Protection Exceeds 15 kV HBM  
Driver Output Transition Times Optimized for  
Signaling Rate up to 20 Mbps  
•
Glitch-Free Power-Up and Power-Down  
Protection for Hot-Plugging Applications  
D PACKAGE (TOP VIEW)  
•
•
•
•
5V-Tolerant Logic Inputs  
1
2
3
4
5
6
7
14  
13  
12  
11  
VCC  
VCC  
A
NC  
R
Bus Idle, Open, and Short-Circuit Failsafe  
Driver Current Limiting and Thermal Shutdown  
Fully Meets All TIA-485-A Specifications  
RE  
DE  
B
D
Z
10  
9
Y
GND  
GND  
APPLICATIONS  
NC  
8
•
•
•
•
•
•
Telecommunications Equipment  
Industrial Automation  
NC - No internal connection  
LOGIC DIAGRAM (POSITIVE LOGIC)  
Process Automation  
4
DE  
Building Automation  
9
Y
5
Point-of-Sale (POS) Terminals  
D
10  
Z
Improved Replacement for ADM3076,  
ADM3491, LTC2852, MAX3491 and SP3491  
3
RE  
12  
A
2
R
11  
B
Figure 1. 60 mV Receiver Hysteresis for Noise Immunity  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2011, Texas Instruments Incorporated  
 
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