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SN75LBC976DL

更新时间： 2024-09-16 13:13:51
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德州仪器 - TI /
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24页 392K
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SN75LBC976DL 数据手册

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SLLS133D − AUGUST 1992 − REVISED MAY 1995  
• Nine Differential Channels for the Data and  
Control Paths of the Differential Small  
Computer Systems Interface (SCSI) and  
Intelligent Peripheral Interface (IPI-2)  
DL PACKAGE  
(TOP VIEW)  
GND  
BSR  
CRE  
1A  
CDE2  
CDE1  
CDE0  
9B+  
9B−  
8B+  
1
56  
55  
54  
53  
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51  
50  
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• Meets or Exceeds the Requirements of  
ANSI Standard RS-485 and  
ISO 8482:1987(E)  
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4
1DE/RE  
2A  
2DE/RE  
3A  
3DE/RE  
4A  
4DE/RE  
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• Packaged in Shrink Small-Outline Package  
6
With 25-mil Terminal Pitch  
8B−  
7
• Designed to Operate at 10 Million Transfers  
8
49 7B+  
48 7B−  
Per Second  
9
• Low Disabled Supply Current  
10  
11  
12  
13  
14  
15  
16  
17  
18  
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31  
30  
29  
6B+  
6B−  
1.4 mA Typical  
• Thermal-Shutdown Protection  
V
V
CC  
CC  
GND  
GND  
GND  
GND  
GND  
GND  
GND  
GND  
GND  
GND  
• Power-Up/Power-Down Glitch Protection  
• Positive and Negative Output-Current  
Limiting  
• Open-Circuit Fail-Safe Receiver Design  
V
V
CC  
5A  
CC  
description  
5B+  
5B−  
4B+  
4B−  
3B+  
3B−  
2B+  
2B−  
1B+  
1B−  
The SN75LBC976 is a nine-channel differential  
5DE/RE  
6A  
6DE/RE  
7A  
7DE/RE  
8A  
8DE/RE  
9A  
transceiver based on the 75LBC176 LinASIC  
†
cell. Use of TI’s LinBiCMOS  
process  
technology allows the power reduction necessary  
to integrate nine differential transceivers. On-chip  
enabling logic makes this device applicable for the  
data path (eight data bits plus parity) and the  
control path (nine bits) for both the Small  
Computer Systems Interface (SCSI) and the  
Intelligent Peripheral Interface (IPI-2) standard  
data interfaces.  
9DE/RE  
Pins 13 through 17 and 40 through 44  
are connected together to the package  
lead frame and signal ground.  
The SN75LBC976 is packaged in a shrink  
small-outline package (DL) with improved thermal  
characteristics using heat-sink terminals. This  
package is ideal for low-profile, space-restricted  
applications such as hard disk drives.  
The switching speed and testing capabilities of the SN75LBC976 are sufficient to transfer data over the data  
bus at 10 million transfers per second. Each of the nine channels conforms to the requirements of the ANSI  
RS-485 and ISO 8482:1987(E) standards referenced by ANSI X3.129-1986 (IPI), ANSI X3.131-1993 (SCSI-2),  
and the proposed SCSI-3 standards.  
The SN75LBC976 is characterized for operation from 0°C to 70°C.  
†
Patent pending  
LinASIC and LinBiCMOS are trademarks of Texas Instruments Incorporated.  
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Copyright 1995, Texas Instruments Incorporated  
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2−1  
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443  
1234567...24

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