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CD74AC251

更新时间： 2024-11-19 23:00:39
品牌 Logo 应用领域
德州仪器 - TI 复用器
页数 文件大小 规格书
8页 41K
描述
8-Input Multiplexer, Three-State

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CD74AC251 数据手册

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CD74AC251,  
CD74ACT251  
Data sheet acquired from Harris Semiconductor  
SCHS246  
August 1998  
8-Input Multiplexer, Three-State  
Features  
Description  
• Buffered Inputs  
The CD74AC251 and CD74ACT251 8-input multiplexers that  
utilize the Harris Advanced CMOS Logic technology. This  
multiplexer features both true (Y) and complement (Y) outputs  
as well as an Output Enable (OE) input. The OE must be at a  
LOW logic level to enable this device. When the OE input is  
HIGH, both outputs are in the high-impedance state. When  
enabled, address information on the data select inputs deter-  
mines which data input is routed to the Y and Y outputs.  
• Typical Propagation Delay  
o
- 6ns at V  
= 5V, T = 25 C, C = 50pF  
A L  
CC  
• Exceeds 2kV ESD Protection MIL-STD-883, Method  
3015  
• SCR-Latchup-Resistant CMOS Process and Circuit  
Design  
Ordering Information  
• Speed of Bipolar FAST™/AS/S with Significantly  
Reduced Power Consumption  
PART  
NUMBER  
TEMP.  
RANGE ( C)  
PKG.  
NO.  
o
PACKAGE  
• Balanced Propagation Delays  
o
CD74AC251E  
CD74ACT251E  
CD74AC251M  
0 to 70 C, -40 to 85, 16 Ld PDIP  
-55 to 125  
E16.3  
• AC Types Feature 1.5V to 5.5V Operation and  
Balanced Noise Immunity at 30% of the Supply  
o
0 to 70 C, -40 to 85, 16 Ld PDIP  
E16.3  
• ±24mA Output Drive Current  
- Fanout to 15 FAST™ ICs  
-55 to 125  
o
0 to 70 C, -40 to 85, 16 Ld SOIC  
M16.15  
M16.15  
-55 to 125  
- Drives 50Ω Transmission Lines  
o
CD74ACT251M 0 to 70 C, -40 to 85, 16 Ld SOIC  
-55 to 125  
Pinout  
NOTES:  
1. When ordering, use the entire part number. Add the suffix 96 to  
obtain the variant in the tape and reel.  
CD74AC251, CD74ACT251  
(PDIP, SOIC)  
TOP VIEW  
2. Wafer and die for this part number is available which meets all elec-  
trical specifications. Please contact your local sales office or Harris  
customer service for ordering information.  
I
I
I
I
1
2
3
4
5
6
7
8
16 V  
CC  
3
2
1
0
15 I  
14 I  
13 I  
12 I  
4
5
6
7
Y
Y
11 S0  
10 S1  
OE  
9
S2  
GND  
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.  
FAST™ is a Trademark of Fairchild Semiconductor.  
Copyright © Harris Corporation 1998  
File Number 1981.1  
1
12345678

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