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SN65LBC179APE4

更新时间： 2024-11-25 01:08:11
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德州仪器 - TI 驱动
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18页 421K
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LOW-POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS

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SN65LBC179A  
SN75LBC179A  
www.ti.com  
SLLS377D –MAY 2000–REVISED SEPTEMBER 2011  
LOW-POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS  
Check for Samples: SN65LBC179A, SN75LBC179A  
1
FEATURES  
SN65LBC179AD (Marked as BL179A)  
2
•
High-Speed Low-Power LinBiCMOS™ Circuitry  
Designed for Signaling Rates(1) of up to 30  
Mbps  
SN65LBC179AP (Marked as 65LBC179A)  
SN75LBC179AD (Marked as LB179A)  
SN75LBC179AP (Marked as 75LBC179A)  
(TOP VIEW)  
•
•
Bus-Pin ESD Protection Exceeds 12 kV HBM  
Very Low Disabled Supply-Current  
Requirements . . . 700 μA Max  
VCC  
R
A
B
Z
Y
1
2
3
4
8
7
6
5
•
•
•
Common-Mode Voltage Range of –7 V to 12 V  
D
Low Supply Current . . .15 mA Max  
GND  
Compatible With ANSI Standard TIA/EAI-485-A  
and ISO8482: 1987(E)  
LOGIC DIAGRAM (POSITIVE LOGIC)  
•
•
Positive and Negative Output Current Limiting  
Driver Thermal Shutdown Protection  
8
2
A
B
R
D
7
(1)Signaling rate by TIA/EIA-485-A definition restrict transition times  
to 30% of the bit length, and much higher signaling rates may be  
achieved without this requirement as displayed in the TYPICAL  
CHARACTERISTICS of this device.  
5
6
3
Y
Z
DESCRIPTION  
The SN65LBC179A and SN75LBC179A differential driver and receiver pairs are monolithic integrated circuits  
designed for bidirectional data communication over long cables that take on the characteristics of transmission  
lines. They are balanced, or differential, voltage mode devices that are compatible with ANSI standard  
TIA/EIA-485-A and ISO 8482:1987(E). The A version offers improved switching performance over its  
predecessors without sacrificing significantly more power.  
The SN65LBC179A and SN75LBC179A combine a differential line driver and differential input line receiver and  
operate from a single 5-V supply. The driver differential outputs and the receiver differential inputs are connected  
to separate terminals for full-duplex operation and are designed to present minimum loading to the bus when  
powered off (VCC = 0). These parts feature a wide positive and negative common-mode voltage range making  
them suitable for point-to-point or multipoint data bus applications. The devices also provide positive- and  
negative-current limiting and thermal shutdown for protection from line fault conditions.  
The SN65LBC179A is characterized over the industrial temperature range of –40°C to 85°C. The SN75LBC179A  
is characterized for operation over the commercial temperature range of 0°C to 70°C.  
FUNCTION TABLE(1)  
DRIVER  
RECEIVER  
DIFFERENTIAL INPUTS  
OUTPUT  
R
OUTPUTS  
INPUT  
D
A – B  
Y
H
L
Z
L
V
ID ≥ 0.2 V  
-0.2 V < VID < 0.2 V  
ID ≤ -0.2 V  
Open circuit  
H
?
H
L
H
L
V
L
OPEN  
H
H
(1) H = high level, L = low level, ? = indeterminate  
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.  
LinBiCMOS is a trademark of Texas Instruments.  
2
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 © 2000–2011, Texas Instruments Incorporated  
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SN65LBC179APE4 替代型号

型号 品牌 替代类型 描述 数据表
SN75LBC179AP TI

完全替代

 LOW-POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS
SN75LBC179P TI

完全替代

 LOW-POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS

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