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參數(shù)資料
| 型號： | 74LCX257M |
| 廠商： | Fairchild Semiconductor |
| 文件頁數(shù)： | 1/9頁 |
| 文件大?。?/td> | 0K |
| 描述： | MULTIPLEXER QUAD 2IN LV 16SOIC |
| 標準包裝： | 48 |
| 系列： | 74LCX |
| 類型： | 多路復(fù)用器 |
| 電路： | 4 x 2:1 |
| 獨立電路： | 1 |
| 輸出電流高，低： | 24mA，24mA |
| 電壓電源： | 單電源 |
| 電源電壓： | 2 V ~ 3.6 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-SOIC |
| 包裝： | 管件 |
2000 Fairchild Semiconductor Corporation
DS012466
www.fairchildsemi.com
May 1995
Revised September 2000
7
4
LCX257
Low
V
o
lt
age
Quad
2-
Input
Mul
tip
lex
e
rw
ith
5V
T
o
le
ra
nt
Input
s
and
Out
puts
74LCX257
Low Voltage Quad 2-Input Multiplexer
with 5V Tolerant Inputs and Outputs
General Description
The LCX257 is a quad 2-input multiplexer with 3-STATE
outputs. Four bits of data from two sources can be selected
using a Common Data Select input. The four outputs
present the selected data in true (non inverted) form. The
outputs may be switched to a high impedance state by
placing a logic HIGH on the common Output Enable (OE)
input, allowing the outputs to interface directly with bus-ori-
ented systems.
The 74LCX257 is fabricated with advanced CMOS technol-
ogy to achieve high speed operation while maintaining
CMOS low power dissipation.
Features
s 5V tolerant inputs and outputs
s 2.3V–3.6V VCC specifications provided
s 6.0 ns tPD max (VCC = 3.3V, In → Zn), 10 A ICC max
s Power down high impedance inputs and outputs
s Supports live insertion/withdrawal (Note 1)
s Implements patented noise/EMI reduction circuitry
s Latch-up performance exceeds 500 mA
s ESD performance:
Human body model
> 2000V
Machine model
> 200V
Note 1: To ensure the high-impedance state during power up or down, OE
should be tied to VCC through a pull-up resistor: the minimum value or the
resistor is determined by the current-sourcing capability of the driver.
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbols
IEEE/IEC
Connection Diagram
Pin Descriptions
Order Number
Package Number
Package Description
74LCX257M
M16A
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
74LCX257SJ
M16D
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74LCX257MTC
MTC16
16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Pin Names
Description
S
Common Data Select Input
OE
3-STATE Output Enable Input
I0a–I0d
Data Inputs from Source 0
I1a–I1d
Data Inputs from Source 1
Za–Zd
3-STATE Multiplexer Outputs
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74LCX257M | 制造商:Fairchild Semiconductor Corporation 功能描述:IC DECODERS/ENCODERS/MULTIPLEXERS/DEMUL |
| 74LCX257M | 制造商:Fairchild Semiconductor Corporation 功能描述:74LCX CMOS SMD 74LCX257 SOIC16 |
| 74LCX257M_Q | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Qd 2-Inp Multiplexer RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| 74LCX257MTC | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Qd 2-Inp Multiplexer RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| 74LCX257MTC | 制造商:Fairchild Semiconductor Corporation 功能描述:MULTIPLEXER LOGIC IC |
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