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MC74HCT244A

更新时间： 2024-09-09 23:01:35
品牌 Logo 应用领域
安森美 - ONSEMI 驱动器
页数 文件大小 规格书
8页 179K
描述
Octal 3-State Noninverting Buffer/Line Driver/Line Receiver with LSTTL-Compatible Inputs

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MC74HCT244A 数据手册

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High–Performance Silicon–Gate CMOS  
http://onsemi.com  
The MC74HCT244A is identical in pinout to the LS244. This  
device may be used as a level converter for interfacing TTL or NMOS  
outputs to High–Speed CMOS inputs. The HCT244A is an octal  
noninverting buffer line driver line receiver designed to be used with  
3–state memory address drivers, clock drivers, and other bus–oriented  
systems. The device has non–inverted outputs and two active–low  
output enables.  
MARKING  
DIAGRAMS  
20  
PDIP–20  
N SUFFIX  
CASE 738  
MC74HCT244AN  
AWLYYWW  
20  
1
1
The HCT244A is the noninverting version of the HCT240. See also  
HCT241.  
20  
SOIC WIDE–20  
DW SUFFIX  
CASE 751D  
HCT244A  
AWLYYWW  
20  
• Output Drive Capability: 15 LSTTL Loads  
• TTL NMOS–Compatible Input Levels  
• Outputs Directly Interface to CMOS, NMOS, and TTL  
• Operating Voltage Range: 4.5 to 5.5 V  
• Low Input Current: 1 µA  
• In Compliance with the Requirements Defined by JEDEC Standard  
No. 7A  
• Chip Complexity: 112 FETs or 28 Equivalent Gates  
1
1
20  
HCT  
244A  
ALYW  
TSSOP–20  
DT SUFFIX  
CASE 948E  
20  
1
1
A
= Assembly Location  
WL = Wafer Lot  
YY = Year  
WW = Work Week  
LOGIC DIAGRAM  
2
4
6
18  
16  
14  
A1  
A2  
A3  
YA1  
YA2  
YA3  
PIN ASSIGNMENT  
ENABLE A  
A1  
1
2
3
4
5
6
7
8
9
20  
V
CC  
19 ENABLE B  
18 YA1  
17 B4  
YB4  
A2  
8
12  
9
A4  
B1  
YA4  
YB1  
NONINVERTING  
OUTPUTS  
DATA INPUTS  
11  
YB3  
A3  
16 YA2  
15 B3  
13  
15  
17  
7
5
3
B2  
B3  
B4  
YB2  
YB3  
YB4  
YB2  
A4  
14 YA3  
13 B2  
YB1  
12 YA4  
11 B1  
GND 10  
1
PIN 20 = V  
CC  
PIN 10 = GND  
ENABLE A  
ENABLE B  
OUTPUT  
ENABLES  
19  
ORDERING INFORMATION  
FUNCTION TABLE  
Device  
Package  
PDIP–20  
Shipping  
Inputs  
Enable A,  
Enable B A, B  
Outputs  
MC74HCT244AN  
1440 / Box  
38 / Rail  
YA, YB  
MC74HCT244ADW  
SOIC–WIDE  
L
L
H
L
H
X
L
H
Z
MC74HCT244ADWR2 SOIC–WIDE 1000 / Reel  
MC74HCT244ADT  
TSSOP–20  
75 / Rail  
Z = high impedance, X = don’t care  
MC74HCT244ADTR2  
TSSOP–20 2500 / Reel  
Semiconductor Components Industries, LLC, 2000  
1
Publication Order Number:  
May, 2000 – Rev. 9  
MC74HCT244A/D  
12345678

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