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參數(shù)資料
| 型號(hào)： | 74LCX257TTR |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | LOW VOLTAGE CMOS QUAD 2 CHANNEL MULTIPLEXER WITH 5V TOLERANT INPUTS AND OUTPUTS (3-STATE) |
| 中文描述： | 低電壓CMOS四路2通道5V容限輸入和輸出復(fù)用器（3態(tài)） |
| 文件頁(yè)數(shù)： | 1/9頁(yè) |
| 文件大?。?/td> | 100K |
| 代理商： | 74LCX257TTR |
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(guān)PDF資料 |
PDF描述 |
|---|---|
| 74LCX257M | Low Voltage Quad 2-Input Multiplexer with 5V Tolerant Inputs and Outputs |
| 74LCX257MTC | Low Voltage Quad 2-Input Multiplexer with 5V Tolerant Inputs and Outputs |
| 74LCX257 | Low Voltage Quad 2-Input Multiplexer with 5V Tolerant Inputs and Outputs |
| 74LCX257MTCX | 2-Input Digital Multiplexer |
| 74LCX257MX | 2-Input Digital Multiplexer |
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| 74LCX273FT | 功能描述:X31 PB-F LCX TSSOP 20 CMOS LOGIC 制造商:toshiba semiconductor and storage 系列:74LCX 零件狀態(tài):在售 功能:復(fù)位 類型:D 型 輸出類型:非反相 元件數(shù):1 每元件位數(shù):8 時(shí)鐘頻率:135MHz 不同 V，最大 CL 時(shí)的最大傳播延遲:9.5ns @ 3.3V，50pF 觸發(fā)器類型:正邊沿 電流 - 輸出高，低:24mA，24mA 電壓 - 電源:1.65 V ~ 3.6 V 電流 - 靜態(tài)（Iq):40μA 輸入電容:7pF 工作溫度:-40°C ~ 125°C（TA） 安裝類型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 標(biāo)準(zhǔn)包裝:2,500 |
| 74LCX273FT(AJ) | 功能描述:X31 PB-F LCX TSSOP 20 CMOS LOGIC 制造商:toshiba semiconductor and storage 系列:74LCX 零件狀態(tài):在售 功能:復(fù)位 類型:D 型 輸出類型:非反相 元件數(shù):1 每元件位數(shù):8 時(shí)鐘頻率:135MHz 不同 V，最大 CL 時(shí)的最大傳播延遲:9.5ns @ 3.3V，50pF 觸發(fā)器類型:正邊沿 電流 - 輸出高，低:24mA，24mA 電壓 - 電源:1.65 V ~ 3.6 V 電流 - 靜態(tài)（Iq):40μA 輸入電容:7pF 工作溫度:-40°C ~ 125°C（TA） 安裝類型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 標(biāo)準(zhǔn)包裝:1 |
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