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參數資料
| 型號： | 74FR240SCX |
| 英文描述： | Dual 4-Bit Inverting Buffer/Driver |
| 中文描述： | 雙4位反向緩沖器/驅動器 |
| 文件頁數： | 1/7頁 |
| 文件大小： | 70K |
| 代理商： | 74FR240SCX |
2001 Fairchild Semiconductor Corporation
DS010887
www.fairchildsemi.com
August 1990
Revised May 2001
7
74FR245
Octal Bidirectional Transceiver with 3-STATE Outputs
General Description
The 74FR245 contains eight non-inverting bidirectional
buffers with 3-STATE outputs and is intended for bus-ori-
ented applications. Current sinking capability is 64 mA on
both the A and B Ports. The Transmit/Receive (T/R) input
determines the direction of data flow through the bidirec-
tional transceiver. Transmit (active-HIGH) enables data
from A Ports to B Ports; Receive (active-LOW) enables
data from B Ports to A Ports. The Output Enable input,
when HIGH, disables both A and B Ports by placing them
in a High Z condition.
Features
I
Non-inverting buffers
I
Bidirectional data path
I
A and B output sink capability of 64 mA, source
capability of 15 mA
I
Guaranteed pin-to-pin skew
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
Pin Descriptions
Connection Diagram
Truth Table
H
=
HIGH Voltage Level
L
=
LOW Voltage Level
X
=
Immaterial
Order Number
74FR245SC
74FR245SJ
74FR245PC
Package Number
M20B
M20D
N20A
Package Description
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Pin Names
Description
OE
Output Enable Input (Active-LOW)
T/R
Transmit/Receive Input
A
0
–
A
7
B
0
–
B
7
Side A Inputs or 3-STATE Outputs
Side B Inputs or 3-STATE Outputs
Inputs
Output
OE
T/R
L
L
Bus B Data to Bus A
L
H
Bus A Data to Bus B
H
X
High Z State
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| 74FR240SJX | Dual 4-Bit Inverting Buffer/Driver |
| 74FR244SCX | Dual 4-Bit Non-Inverting Buffer/Driver |
| 74FR244SJX | SC70/µDFN, Single/Dual Low-Voltage, Low-Power µP Reset Circuits |
| 74FR543SCX | SC70/µDFN, Single/Dual Low-Voltage, Low-Power µP Reset Circuits |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 74FR240SJ | 功能描述:緩沖器和線路驅動器 Octal Buf/Line Drv RoHS:否 制造商:Micrel 輸入線路數量:1 輸出線路數量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| 74FR240SJX | 功能描述:緩沖器和線路驅動器 Octal Buf/Line Drv RoHS:否 制造商:Micrel 輸入線路數量:1 輸出線路數量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| 74FR244 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Octal Buffer/Line Driver with 3-STATE Outputs |
| 74FR244_01 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Octal Buffer/Line Driver with 3-STATE Outputs |
| 74FR244_XDB3026T WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
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