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CY74FCT2257ATQCT

更新时间： 2024-01-16 07:14:59
品牌 Logo 应用领域
德州仪器 - TI 解复用器逻辑集成电路光电二极管
页数 文件大小 规格书
6页 55K
描述
Quad 2-Input Multiplexer

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CY74FCT2257ATQCT 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：SOIC包装说明：SSOP, SSOP16,.25
针数：16Reach Compliance Code：not_compliant
HTS代码：8542.39.00.01风险等级：5.75
系列：FCTJESD-30 代码：R-PDSO-G16
JESD-609代码：e0长度：4.9 mm
负载电容（CL）：50 pF逻辑集成电路类型：MULTIPLEXER
最大I（ol）：0.012 A功能数量：4
输入次数：2输出次数：1
端子数量：16最高工作温度：85 °C
最低工作温度：-40 °C输出特性：3-STATE WITH SERIES RESISTOR
输出极性：TRUE封装主体材料：PLASTIC/EPOXY
封装代码：SSOP封装等效代码：SSOP16,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：NOT SPECIFIED电源：5 V
Prop。Delay @ Nom-Sup：6 ns传播延迟（tpd）：10.5 ns
认证状态：Not Qualified座面最大高度：1.75 mm
子类别：Multiplexer/Demultiplexers最大供电电压 (Vsup)：5.25 V
最小供电电压 (Vsup)：4.75 V标称供电电压 (Vsup)：5 V
表面贴装：YES技术：CMOS
温度等级：INDUSTRIAL端子面层：Tin/Lead (Sn/Pb)
端子形式：GULL WING端子节距：0.635 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：3.9116 mmBase Number Matches：1

CY74FCT2257ATQCT 数据手册

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1CY74FCT2257T  
Data sheet acquired from Cypress Semiconductor Corporation.  
Data sheet modified to remove devices not offered.  
CY74FCT2257T  
SCCS038 - September 1994 - Revised March 2000  
Quad 2-Input Multiplexer  
Functional Description  
Features  
• Function and pinout compatible with FCT and F logic  
• 25Ω output series resistors to reduce transmission line  
reflection noise  
• FCT-C speed at 4.3 ns max.,  
FCT-A speed at 5.0 ns max.  
• TTL output level versions of equivalent FCT functions  
• Edge-rate control circuitry for significantly improved  
noise characteristics  
• Power-off disable feature  
• Fully compatible with TTL input and output logic levels  
• ESD > 2000V  
• Sink current 12 mA  
Source current15 mA  
The FCT2257T has four identical two-input multiplexers that  
select four bits of data from two sources under the control of a  
common data Select input (S). The I0 inputs are selected  
when the Select input is LOW and the I1 inputs are selected  
when the Select input is HIGH. Data appears at the output in  
true non-inverted form for the FCT2257T. On-chip termination  
resistors have been added to the outputs to reduce system  
noise caused by reflections. The FCT2257T can be used to  
replace the FCT257T to reduce noise in an existing design.  
The FCT2257T is a logic implementation of a four-pole,  
two-position switch where the position of the switch is  
determined by the logic levels supplied to the select input. Out-  
puts are forced to a high-impedance “OFF” state when the  
Output Enable input (OE) is HIGH.  
• Extended commercial temp. range of –40˚C to +85˚C  
• Three-state outputs  
All but one device must be in the high-impedance state to  
avoid currents exceeding the maximum ratings if outputs are  
tied together. Design of the output enable signals must ensure  
that there is no overlap when outputs of three-state devices  
are tied together.  
The outputs are designed with a power-off disable feature to  
allow for live insertion of boards.  
Pin Configurations  
Logic Block Diagram  
I
0a  
I
1a  
I
0b  
I
1b  
I
0c  
I
1c  
I
0d  
I
1d  
S
SOIC/QSOP  
Top View  
S
V
16  
15  
14  
13  
12  
1
CC  
OE  
I
0a  
OE  
2
3
4
5
6
I
0c  
I
1a  
I
1c  
Y
a
I
Y
c
0b  
I
0d  
I
1b  
11  
10  
9
I
1d  
Y
b
7
8
GND  
Y
d
FCT2257T–3  
Y
a
Y
b
Y
c
Y
d
FCT2257T–1  
Pin Description  
Function Table[1]  
Inputs  
Output  
Y
Name  
Description  
OE  
S
I0  
I1  
I
Data Inputs  
H
L
L
L
L
X
H
H
L
X
X
X
L
X
L
H
X
X
Z
L
H
L
S
Common Select Input  
Enable Inputs (Active LOW)  
Data Outputs  
OE  
Y
L
H
H
Note:  
1. H = HIGH Voltage Level, L = LOW Voltage Level, X = Don’t Care,  
Z = High impedance (OFF) state.  
Copyright © 2000, Texas Instruments Incorporated  
123456

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CY74FCT2257ATQCT 替代型号

型号 品牌 替代类型 描述 数据表
CY74FCT2257ATQCTG4 TI

完全替代

 FCT SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16, GREEN, PLASTIC, QSOP-1
CY74FCT257ATQCT TI

完全替代

 QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS
CY74FCT257ATQCTE4 TI

完全替代

 QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS

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