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SN54BCT25244WR

更新时间： 2024-11-27 13:13:43
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德州仪器 - TI 输出元件驱动
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SN54BCT25244WR 数据手册

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SN54BCT25244, SN74BCT25244  
25-Ω OCTAL BUFFERS/DRIVERS  
WITH 3-STATE OUTPUTS  
SCBS064A – JUNE 1990 – REVISED NOVEMBER 1993  
SN54BCT25244 . . . JT OR W PACKAGE  
SN74BCT25244 . . . DW OR NT PACKAGE  
(TOP VIEW)  
• State-of-the-Art BiCMOS Design  
Significantly Reduces I  
CCZ  
• ESD Protection Exceeds 2000 V Per  
MIL-STD-883C, Method 3015; Exceeds  
200 V Using Machine Model (C = 200 pF,  
R = 0)  
1
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
13  
1Y1  
GND  
1Y2  
1Y3  
GND  
1Y4  
2Y1  
GND  
2Y2  
2Y3  
GND  
2Y4  
1OE  
1A1  
1A2  
2
3
• Designed to Facilitate Incident-Wave  
Switching for Line Impedances of 25 Ω  
or Greater  
4
V
CC  
5
1A3  
1A4  
2A1  
2A2  
6
7
• Distributed V  
and GND Pins Minimize  
Noise Generated by the Simultaneous  
Switching of Outputs  
CC  
8
9
V
CC  
10  
11  
12  
2A3  
2A4  
2OE  
• Package Options Include Plastic  
Small-Outline (DW) Packages, Ceramic  
Chip Carriers (FK) and Flatpacks (W), and  
Standard Plastic and Ceramic 300-mil DIPs  
(JT, NT)  
SN54BCT25244 . . . FK PACKAGE  
(TOP VIEW)  
description  
These 25-Ω octal buffers and line drivers are  
designed specifically to improve both the  
performance and density of 3-state memory  
address drivers, clock drivers, and bus-oriented  
receivers and transmitters.  
4
3 2 1 28 27 26  
1A3  
5
6
7
8
9
25 2OE  
V
24 2Y4  
23  
CC  
1A2  
GND  
NC  
2Y3  
2Y2  
GND  
22  
21  
20  
19  
NC  
1A1  
1OE  
1Y1  
These buffers are capable of sinking 188-mA I  
,
OL  
which facilitates switching 25-Ω transmission  
lines on the incident wave. The distributed V  
10  
11  
CC  
and GND pins minimize switching noise for more  
reliable system operation.  
12 13 14 15 16 17 18  
When the output-enable (1OE and 2OE) inputs  
are low, the device transmits data from the  
A inputs to the Y outputs. When 1OE and 2OE are  
high, the outputs are in the high-impedance state.  
NC – No internal connection  
The SN54BCT25244 is characterized for  
operation over the full military temperature range  
of –55°C to 125°C. The SN74BCT25244 is  
characterized for operation from 0°C to 70°C.  
FUNCTION TABLE  
(each buffer/driver)  
INPUTS  
OUTPUT  
Y
OE  
A
H
L
L
L
H
L
H
X
Z
Copyright 1993, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
2–1  
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
12345

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