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MC74VHC244MEL PDF预览

MC74VHC244MEL

更新时间： 2024-11-20 05:22:11
品牌 Logo 应用领域
安森美 - ONSEMI /
页数 文件大小 规格书
8页 217K
描述
Octal Bus Buffer

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MC74VHC244MEL 数据手册

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MC74VHC244  
Octal Bus Buffer  
The MC74VHC244 is an advanced high speed CMOS octal bus  
buffer fabricated with silicon gate CMOS technology.  
The MC74VHC244 is a noninverting 3--state buffer, and has two  
active--low output enables. This device is designed to be used with  
3--state memory address drivers, etc.  
The internal circuit is composed of three stages, including a buffer  
output which provides high noise immunity and stable output. The  
inputs tolerate voltages up to 7 V, allowing the interface of 5 V systems  
to 3 V systems.  
http://onsemi.com  
MARKING DIAGRAM  
20  
VHC244  
AWLYYWWG  
• High Speed: tPD = 3.9 ns (Typ) at VCC = 5 V  
20  
1
• Low Power Dissipation: ICC = 4 mA (Max) at TA = 25°C  
• High Noise Immunity: VNIH = VNIL = 28% VCC  
• Power Down Protection Provided on Inputs  
• Balanced Propagation Delays  
1
SOIC--20 WB  
DW SUFFIX  
CASE 751D  
20  
• Designed for 2 V to 5.5 V Operating Range  
• Low Noise: VOLP = 0.9 V (Max)  
VHC  
244  
ALYW  
20  
1
• Pin and Function Compatible with Other Standard Logic Families  
• Latchup Performance Exceeds 300 mA  
• ESD Performance: Human Body Model > 2000 V  
Machine Model > 200 V  
• Chip Complexity: 136 FETs  
• Pb--Free Packages are Available*  
1
TSSOP--20  
DT SUFFIX  
CASE 948E  
20  
1
74VHC244  
AWLYWW  
20  
1
SOIC EIAJ--20  
M SUFFIX  
CASE 967  
2
4
6
8
18  
16  
14  
12  
A1  
A2  
A3  
A4  
YA1  
YA2  
YA3  
YA4  
A
= Assembly Location  
= Year  
WL, L = Wafer Lot  
YY, Y  
WW, W = Work Week  
PIN ASSIGNMENT  
DATA  
INPUTS  
NONINVERTING  
OUTPUTS  
11  
13  
15  
17  
9
7
5
3
OEA  
1
20  
V
CC  
B1  
B2  
B3  
B4  
YB1  
YB2  
YB3  
YB4  
A1  
YB4  
A2  
2
3
4
5
6
7
8
9
19 OEB  
18 YA1  
17 B4  
16 YA2  
15 B3  
14 YA3  
13 B2  
12 YA4  
11 B1  
YB3  
A3  
YB2  
A4  
1
19  
OEA  
OEB  
OUTPUT  
ENABLES  
YB1  
GND 10  
Figure 1. Logic Diagram  
ORDERING INFORMATION  
See detailed ordering and shipping information in the  
Ordering Information Table on page 2 of this data sheet.  
*For additional information on our Pb--Free strategy and soldering details, please  
download the ON Semiconductor Soldering and Mounting Techniques  
Reference Manual, SOLDERRM/D.  
©
Semiconductor Components Industries, LLC, 2006  
1
Publication Order Number:  
March, 2006 -- Rev. 7  
MC74VHC244/D  
12345678

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