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MC74AC245

更新时间： 2024-11-21 22:46:23
品牌 Logo 应用领域
安森美 - ONSEMI 输出元件输入元件
页数 文件大小 规格书
12页 106K
描述
OCTAL BIDIRECTIONAL TRANSCEIVER WITH 3-STATE INPUTS/OUTPUTS

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MC74AC245 数据手册

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MC74AC245, MC74ACT245  
Octal Bidirectional  
Transceiver with 3-State  
Inputs/Outputs  
The MC74AC245/74ACT245 contains eight non–inverting  
bidirectional buffers with 3–state outputs and is intended for  
bus–oriented applications. Current sinking capability is 24 mA at both  
the A and B ports. The Transmit/Receive (T/R) input determines the  
direction of data flow through the bidirectional transceiver. Transmit  
(active–HIGH) enables data from A ports to B ports; Receive  
(active–LOW) enables data from B ports to A ports. The Output  
Enable input, when HIGH, disables both A and B ports by placing  
them in a High Z condition.  
http://onsemi.com  
PDIP–20  
N SUFFIX  
CASE 738  
20  
1
SO–20  
DW SUFFIX  
CASE 751  
20  
• Noninverting Buffers  
1
• Bidirectional Data Path  
• A and B Outputs Source/Sink 24 mA  
• ′ACT245 Has TTL Compatible Inputs  
TSSOP–20  
DT SUFFIX  
CASE 948E  
20  
1
V
OE  
19  
B
B
B
B
B
B
B
B
7
CC  
0
1
2
3
4
5
6
EIAJ–20  
M SUFFIX  
CASE 967  
20  
18  
17  
16  
15  
14  
12  
13  
11  
20  
1
ORDERING INFORMATION  
Device  
Package  
PDIP–20  
PDIP–20  
SOIC–20  
Shipping  
1
2
3
4
5
6
7
9
8
10  
MC74AC245N  
18 Units/Rail  
18 Units/Rail  
38 Units/Rail  
T/R  
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
7
GND  
MC74ACT245N  
MC74AC245DW  
MC74AC245DWR2  
MC74ACT245DW  
Figure 1.  
SOIC–20 1000 Tape & Reel  
SOIC–20 38 Units/Rail  
PIN ASSIGNMENT  
PIN  
OE  
T/R  
FUNCTION  
MC74ACT245DWR2 SOIC–20 1000 Tape & Reel  
Output Enable Input  
Transmit/Receive Input  
MC74AC245DT  
MC74AC245DTR2  
MC74ACT245DT  
TSSOP–20  
TSSOP–20 2500 Tape & Reel  
TSSOP–20 75 Units/Rail  
75 Units/Rail  
A –A  
0
Side A 3–State Inputs or 3–State Outputs  
Side B 3–State Inputs or 3–State Outputs  
7
B –B  
0
7
MC74ACT245DTR2 TSSOP–20 2500 Tape & Reel  
TRUTH TABLES  
Inputs  
MC74AC245M  
EIAJ–20  
EIAJ–20 2000 Tape & Reel  
EIAJ–20 40 Units/Rail  
EIAJ–20 2000 Tape & Reel  
40 Units/Rail  
Outputs  
MC74AC245MEL  
MC74ACT245M  
MC74ACT245MEL  
OE T/R  
L
L
H
L
H
X
Bus B Data to Bus A  
Bus A Data to Bus B  
High Z State  
H = HIGH Voltage Level  
L = LOW Voltage Level  
X = Immaterial  
DEVICE MARKING INFORMATION  
See general marking information in the device marking  
section on page 6 of this data sheet.  
Semiconductor Components Industries, LLC, 2001  
1
Publication Order Number:  
May, 2001 – Rev. 5  
MC74AC245/D  
1234567...12

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