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CD54AC257

更新时间： 2024-11-20 05:08:59
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德州仪器 - TI 复用器
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14页 288K
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Quad 2-Input Multiplexer with Three-State Outputs

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CD54AC257 数据手册

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CD54/74AC257, CD54/74ACT257,  
CD74ACT258  
Data sheet acquired from Harris Semiconductor  
SCHS248A  
Quad 2-Input Multiplexer  
with Three-State Outputs  
August 1998 - Revised May 2000  
Features  
Description  
• ’AC257, ’ACT257. . . . . . . . . . . . . Non-Inverting Outputs The ’AC257, ’ACT257 and CD74ACT258 are quad 2-input  
multiplexers with three-state outputs that utilize Advanced  
CMOS Logic technology. Each of these devices selects four  
• CD74ACT258 . . . . . . . . . . . . . . . . . . . Inverting Outputs  
bits of data from two sources under the control of a common  
Select input (S). The Output Enable (OE) is active LOW.  
When OE is HIGH, all of the outputs (Y or Y) are in the high-  
impedance state regardless of all other input conditions.  
• Buffered Inputs  
• Typical Propagation Delay  
o
- 4.4ns at V  
CC  
= 5V, T = 25 C, C = 50pF  
A L  
• Exceeds 2kV ESD Protection MIL-STD-883, Method  
3015  
Moving data from two groups of registers to four common  
output buses is a common use of the ’AC257, ’ACT257, and  
CD74ACT258. The state of the Select input determines the  
particular register from which the data comes. The ’AC257,  
’ACT257 and CD74ACT258 can also be used as function  
generators.  
• SCR-Latchup-Resistant CMOS Process and Circuit  
Design  
• Speed of Bipolar FAST™/AS/S with Significantly  
Reduced Power Consumption  
• Balanced Propagation Delays  
Ordering Information  
• AC Types Feature 1.5V to 5.5V Operation and  
Balanced Noise Immunity at 30% of the Supply  
PART  
NUMBER  
TEMP.  
RANGE ( C)  
o
PACKAGE  
• ±24mA Output Drive Current  
CD54AC257F3A  
CD74AC257E  
-55 to 125  
o
16 Ld CERDIP  
- Fanout to 15 FAST™ ICs  
0 to 70 C, -40 to 85, 16 Ld PDIP  
-55 to 125  
Drives 50Ω Transmission Lines  
o
CD74AC257M  
0 to 70 C, -40 to 85, 16 Ld SOIC  
-55 to 125  
Pinout  
CD54ACT257F3A  
CD74ACT257E  
-55 to 125  
o
16 Ld CERDIP  
CD54AC257, CD54ACT257  
(CERDIP)  
0 to 70 C, -40 to 85, 16 Ld PDIP  
-55 to 125  
CD74AC257, CD74ACT257, CD74ACT258  
(PDIP, SOIC)  
o
CD74ACT257M  
CD74ACT258E  
CD74ACT258M  
NOTES:  
0 to 70 C, -40 to 85, 16 Ld SOIC  
-55 to 125  
TOP VIEW  
o
0 to 70 C, -40 to 85, 16 Ld PDIP  
ACT258  
S
AC/ACT257  
S
AC/ACT257 ACT258  
16 V  
-55 to 125  
1
2
3
4
5
6
7
8
V
CC  
15 OE  
CC  
o
0 to 70 C, -40 to 85, 16 Ld SOIC  
1I  
1I  
1I  
1I  
OE  
0
1
0
1
-55 to 125  
14 4I  
13 4I  
4I  
4I  
0
1
0
1
1Y  
1Y  
1. When ordering, use the entire part number. Add the suffix 96 to  
obtain the variant in the tape and reel.  
2I  
0
2I  
0
12 4Y  
4Y  
2I  
1
2I  
1
11 3I  
0
3I  
0
2. Wafer and die for this part number is available which meets all  
electrical specifications. Please contact your local TI sales office or  
customer service for ordering information.  
10 3I  
1
3I  
1
2Y  
2Y  
9
3Y  
3Y  
GND  
GND  
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.  
FAST™ is a Trademark of Fairchild Semiconductor.  
1
Copyright © 2000, Texas Instruments Incorporated  
1234567...14

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CD54AC257 替代型号

型号 品牌 替代类型 描述 数据表
CD74AC257 TI

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