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參數資料
| 型號： | 74LCX257 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | Low Voltage Quad 2-Input Multiplexer with 5V Tolerant Inputs and Outputs |
| 中文描述： | 低電壓四2輸入與5V容限輸入和輸出復用器 |
| 文件頁數： | 1/9頁 |
| 文件大?。?/td> | 100K |
| 代理商： | 74LCX257 |
2000 Fairchild Semiconductor Corporation
DS012466
www.fairchildsemi.com
May 1995
Revised September 2000
7
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
I
5V tolerant inputs and outputs
I
2.3V–3.6V V
CC
specifications provided
I
6.0 ns t
PD
max (V
CC
=
3.3V, I
n
→
Z
n
), 10
μ
A I
CC
max
I
Power down high impedance inputs and outputs
I
Supports live insertion/withdrawal (Note 1)
I
Implements patented noise/EMI reduction circuitry
I
Latch-up performance exceeds 500 mA
I
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 V
CC
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
74LCX257M
74LCX257SJ
74LCX257MTC
Package Number
M16A
M16D
MTC16
Package Description
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Pin Names
S
OE
I
0a
–
I
0d
I
1a
–
I
1d
Z
a
–
Z
d
Description
Common Data Select Input
3-STATE Output Enable Input
Data Inputs from Source 0
Data Inputs from Source 1
3-STATE Multiplexer Outputs
相關PDF資料 |
PDF描述 |
|---|---|
| 74LCX257MTCX | 2-Input Digital Multiplexer |
| 74LCX257MX | 2-Input Digital Multiplexer |
| 74LCX257SJX | 2-Input Digital Multiplexer |
| 74LCX27M | Low Voltage Triple 3-Input NOR Gate with 5V Tolerant Inputs |
| 74LCX27SJ | Low Voltage Triple 3-Input NOR Gate with 5V Tolerant Inputs |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 74LCX257M | 功能描述:編碼器、解碼器、復用器和解復用器 Qd 2-Inp Multiplexer RoHS:否 制造商:Micrel 產品:Multiplexers 邏輯系列:CMOS 位數: 線路數量（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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| 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、復用器和解復用器 Qd 2-Inp Multiplexer RoHS:否 制造商:Micrel 產品:Multiplexers 邏輯系列:CMOS 位數: 線路數量（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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| 74LCX257MTC | 功能描述:編碼器、解碼器、復用器和解復用器 Qd 2-Inp Multiplexer RoHS:否 制造商:Micrel 產品:Multiplexers 邏輯系列:CMOS 位數: 線路數量（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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
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