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CY74FCT157CTDRG4

更新时间： 2024-11-09 06:51:35
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德州仪器 - TI 复用器输入元件
页数 文件大小 规格书
11页 302K
描述
QUAD 2-INPUT MULTIPLEXERS

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CY74FCT157CTDRG4 数据手册

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CY54FCT157T, CY74FCT157T  
QUAD 2-INPUT MULTIPLEXERS  
WITH 3-STATE OUTPUTS  
SCCS014B – MAY 1994 – REVISED NOVEMBER 2001  
CY74FCT157T . . . Q OR SO PACKAGE  
(TOP VIEW)  
Function, Pinout, and Drive Compatible  
With FCT and F Logic  
Reduced V  
of Equivalent FCT Functions  
(Typically = 3.3 V) Versions  
OH  
S
V
E
I
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
10  
9
CC  
I
I
0a  
1a  
Edge-Rate Control Circuitry for  
Significantly Improved Noise  
Characteristics  
0d  
Y
I
1d  
a
I
Y
I
0b  
d
I
Supports Partial-Power-Down Mode  
I
off  
1b  
0c  
Operation  
Y
I
b
1c  
GND  
Y
Matched Rise and Fall Times  
c
Fully Compatible With TTL Input and  
Output Logic Levels  
CY54FCT157T . . . L PACKAGE  
(TOP VIEW)  
ESD Protection Exceeds JESD 22  
– 2000-V Human-Body Model (A114-A)  
– 200-V Machine Model (A115-A)  
– 1000-V Charged-Device Model (C101)  
3
2
1
20 19  
18  
I
I
I
4
5
6
7
8
0d  
1a  
CY54FCT157T  
– 32-mA Output Sink Current  
– 12-mA Output Source Current  
Y
17  
16  
15  
14  
1d  
a
NC  
NC  
Y
d
I
0b  
CY74FCT157T  
– 64-mA Output Sink Current  
– 32-mA Output Source Current  
I
I
0c  
1b  
9 10 11 12 13  
3-State Outputs  
NC – No internal connection  
description  
The ’FCT157T devices are quad two-input multiplexers that select four bits of data from two sources under the  
control of a common data-select (S) input. The output-enable (E) input is active low. When E is high, all of the  
outputs (Y) are forced low, regardless of all other input conditions.  
Moving data from two groups of registers to four common output buses is a common use of the ’FCT157T  
devices. The state of S determines the particular register from which the data comes. It also can be used as  
a function generator. These devices are useful for implementing highly irregular logic by generating any 4 of  
the 16 different functions of 2 variables, with 1 variable common.  
The ’FCT157T devices are logic implementations of a four-pole, two-position switch, where the position of the  
switch is determined by the logic levels at S.  
These devices are fully specified for partial-power-down applications using I . The I circuitry disables the  
off  
off  
outputs, preventing damaging current backflow through the device when it is powered down.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
Copyright 2001, Texas Instruments Incorporated  
On products compliant to MIL-PRF-38535, all parameters are tested  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
unless otherwise noted. On all other products, production  
testing of all parameters.  
processing does not necessarily include testing of all parameters.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...11

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CY74FCT157CTDRG4 替代型号

型号 品牌 替代类型 描述 数据表
CY74FCT157CTDR TI

完全替代

 QUAD 2-INPUT MULTIPLEXERS
CY74FCT157CTDE4 TI

完全替代

 QUAD 2-INPUT MULTIPLEXERS
CY74FCT157CTD TI

完全替代

 QUAD 2-INPUT MULTIPLEXERS

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CY74FCT157CTSOCT TI

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