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74AHC257D112

产品描述Encoders, Decoders, Multiplexers & Demultiplexers QUAD 2-INPUT
产品类别半导体    逻辑   
文件大小588KB,共16页
制造商NXP(恩智浦)
官网地址https://www.nxp.com
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74AHC257D112概述

Encoders, Decoders, Multiplexers & Demultiplexers QUAD 2-INPUT

74AHC257D112规格参数

参数名称属性值
Product AttributeAttribute Value
制造商
Manufacturer
NXP(恩智浦)
产品种类
Product Category
Encoders, Decoders, Multiplexers & Demultiplexers
RoHSDetails
产品
Product
Multiplexers
Logic FamilyAHC
Number of Input Lines8 Input
Number of Output Lines4 Output
传播延迟时间
Propagation Delay Time
12.8 ns at 3.3 V, 7.9 ns at 5 V
电源电压-最小
Supply Voltage - Min
2 V
电源电压-最大
Supply Voltage - Max
5.5 V
最小工作温度
Minimum Operating Temperature
- 40 C
最大工作温度
Maximum Operating Temperature
+ 125 C
安装风格
Mounting Style
SMD/SMT
封装 / 箱体
Package / Case
SOT-109
系列
Packaging
Tube
FunctionMultiplexer
高度
Height
1.45 mm
长度
Length
10 mm
技术
Technology
CMOS
宽度
Width
4 mm
High Level Output Current- 8 mA
Low Level Output Current8 mA
工作电源电压
Operating Supply Voltage
5 V
工厂包装数量
Factory Pack Quantity
1000
单位重量
Unit Weight
0.008818 oz

文档预览

下载PDF文档
74AHC257; 74AHCT257
Quad 2-input multiplexer; 3-state
Rev. 02 — 9 May 2008
Product data sheet
1. General description
The 74AHC257; 74AHCT257 is a high-speed Si-gate CMOS device and is pin compatible
with Low-power Schottky TTL (LSTTL). It is specified in compliance with JEDEC standard
No. 7-A.
The 74AHC257; 74AHCT257 has four identical 2-input multiplexers with 3-state outputs,
which select 4 bits of data from two sources and are controlled by a common data select
input (S). The data inputs from source 0 (1I0 to 4I0) are selected when input S is LOW and
the data inputs from source 1 (1I1 to 4I1) are selected when input S is HIGH. Data
appears at the outputs (1Y to 4Y) in true (non-inverting) form from the selected inputs.
The 74AHC257; 74AHCT257 is the logic implementation of a 4-pole 2-position switch,
where the position of the switch is determined by the logic levels applied to input S. The
outputs are forced to a high-impedance OFF-state when OE is HIGH.
The logic equations for the outputs are:
1Y = OE
×
(1I1
×
S + 1I0
×
S)
2Y = OE
×
(2I1
×
S + 2I0
×
S)
3Y = OE
×
(3I1
×
S + 3I0
×
S)
4Y = OE
×
(4I1
×
S + 4I0
×
S)
The 74AHC257; 74AHCT257 is identical to the 74AHC258; 74AHCT258, but has
non-inverting (true) outputs.
2. Features
I
I
I
I
I
Balanced propagation delays
All inputs have Schmitt-trigger actions
Non-inverting data path
Inputs accept voltages higher than V
CC
Input levels:
N
For 74AHC257: CMOS level
N
For 74AHCT257: TTL level
I
ESD protection:
N
HBM EIA/JESD22-A114E exceeds 2000 V
N
MM EIA/JESD22-A115-A exceeds 200 V
N
CDM EIA/JESD22-C101C exceeds 1000 V
I
Multiple package options
I
Specified from
−40 °C
to +85
°C
and from
−40 °C
to +125
°C

74AHC257D112相似产品对比

74AHC257D112 74AHCT257PW112 74AHC257PW118 74AHC257D118
描述 Encoders, Decoders, Multiplexers & Demultiplexers QUAD 2-INPUT Encoders, Decoders, Multiplexers & Demultiplexers 8-BIT ADDRSSBL LATCH Encoders, Decoders, Multiplexers & Demultiplexers QUAD 2-INPUT Encoders, Decoders, Multiplexers & Demultiplexers QUAD 2-INPUT
Product Attribute Attribute Value Attribute Value Attribute Value Attribute Value
制造商
Manufacturer
NXP(恩智浦) NXP(恩智浦) NXP(恩智浦) NXP(恩智浦)
产品种类
Product Category
Encoders, Decoders, Multiplexers & Demultiplexers Encoders, Decoders, Multiplexers & Demultiplexers Encoders, Decoders, Multiplexers & Demultiplexers Encoders, Decoders, Multiplexers & Demultiplexers
RoHS Details Details Details Details
产品
Product
Multiplexers Multiplexers Multiplexers Multiplexers
Logic Family AHC AHCT AHC AHC
Number of Input Lines 8 Input 8 Input 8 Input 8 Input
Number of Output Lines 4 Output 4 Output 4 Output 4 Output
传播延迟时间
Propagation Delay Time
12.8 ns at 3.3 V, 7.9 ns at 5 V 8.5 ns at 5 V 12.8 ns at 3.3 V, 7.9 ns at 5 V 12.8 ns at 3.3 V, 7.9 ns at 5 V
电源电压-最小
Supply Voltage - Min
2 V 4.5 V 2 V 2 V
电源电压-最大
Supply Voltage - Max
5.5 V 5.5 V 5.5 V 5.5 V
最小工作温度
Minimum Operating Temperature
- 40 C - 40 C - 40 C - 40 C
最大工作温度
Maximum Operating Temperature
+ 125 C + 125 C + 125 C + 125 C
安装风格
Mounting Style
SMD/SMT SMD/SMT SMD/SMT SMD/SMT
封装 / 箱体
Package / Case
SOT-109 SOT-403 SOT-403 SOT-109
Function Multiplexer Multiplexer Multiplexer Multiplexer
高度
Height
1.45 mm 0.95 mm 0.95 mm 1.45 mm
长度
Length
10 mm 5.1 mm 5.1 mm 10 mm
技术
Technology
CMOS CMOS CMOS CMOS
宽度
Width
4 mm 4.5 mm 4.5 mm 4 mm
High Level Output Current - 8 mA - 8 mA - 8 mA - 8 mA
Low Level Output Current 8 mA 8 mA 8 mA 8 mA
工作电源电压
Operating Supply Voltage
5 V 5 V 5 V 5 V
工厂包装数量
Factory Pack Quantity
1000 2400 2500 2500
系列
Packaging
Tube Tube Reel Reel
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