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MC74VHC244_11 PDF预览

MC74VHC244_11

更新时间: 2024-11-04 11:58:47
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安森美 - ONSEMI /
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8页 145K
描述
Octal Bus Buffer

MC74VHC244_11 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 3state buffer, and has two  
activelow output enables. This device is designed to be used with  
3state 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 DIAGRAMS  
20  
SOIC20  
DW SUFFIX  
CASE 751D  
High Speed: t = 3.9 ns (Typ) at V = 5 V  
PD  
CC  
VHC244  
AWLYYWWG  
20  
Low Power Dissipation: I = 4 mA (Max) at T = 25°C  
CC  
A
1
High Noise Immunity: V  
= V = 28% V  
NIL CC  
NIH  
1
Power Down Protection Provided on Inputs  
Balanced Propagation Delays  
20  
VHC  
244  
Designed for 2 V to 5.5 V Operating Range  
TSSOP20  
DT SUFFIX  
CASE 948E  
20  
Low Noise: V  
= 0.9 V (Max)  
OLP  
ALYWG  
1
G
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  
1
20  
SOEIAJ20  
M SUFFIX  
CASE 967  
VHC244  
AWLYWWG  
20  
Chip Complexity: 136 FETs  
These Devices are PbFree and are RoHS Compliant  
1
1
VHC244 = Specific Device Code  
A
WL, L  
Y
= Assembly Location  
= Wafer Lot  
= Year  
= Work Week  
= PbFree Package  
2
4
6
8
18  
16  
14  
12  
A1  
A2  
A3  
A4  
YA1  
YA2  
YA3  
YA4  
WW, W  
G or G  
(Note: Microdot may be in either location)  
PIN ASSIGNMENT  
DATA  
NONINVERTING  
OUTPUTS  
INPUTS  
OEA  
A1  
1
2
3
4
5
6
7
8
9
20  
V
CC  
11  
13  
15  
17  
9
7
5
3
B1  
B2  
B3  
B4  
YB1  
YB2  
YB3  
YB4  
19 OEB  
18 YA1  
17 B4  
16 YA2  
15 B3  
14 YA3  
13 B2  
12 YA4  
11 B1  
YB4  
A2  
YB3  
A3  
YB2  
A4  
1
OEA  
OEB  
OUTPUT  
YB1  
19  
ENABLES  
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.  
© Semiconductor Components Industries, LLC, 2011  
1
Publication Order Number:  
May, 2011 Rev. 8  
MC74VHC244/D  

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