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參數(shù)資料
| 型號(hào)： | 74FR573SCX |
| 英文描述： | 8-Bit D-Type Latch |
| 中文描述： | 8位D型鎖存器 |
| 文件頁數(shù)： | 2/6頁 |
| 文件大小： | 59K |
| 代理商： | 74FR573SCX |
www.fairchildsemi.com
2
7
Pin Descriptions
Functional Description
The 74FR543 contains two sets of D-type latches, with
separate input and output controls for each. For data flow
from A-to-B, for example, the A-to-B Enable (CEAB) input
must be LOW in order to enter data from the A Port or take
data from the B Port as indicated in the Data I/O Control
Table. With CEAB LOW, a LOW signal on (LEAB) input
makes the A-to-B latches transparent; a subsequent LOW-
to-HIGH transition of the LEAB line puts the A latches in
the storage mode and their outputs no longer change with
the A inputs. With CEAB and OEAB both LOW, the B out-
put buffers are active and reflect the data present on the
output of the A latches. Control of data flow from B-to-A is
similar, but using the CEBA, LEBA and OEBA.
Data I/O Control Table
H
=
HIGH Voltage Level
L
=
LOW Voltage Level
X
=
Immaterial
Logic Diagram
Pin Names
Description
OEAB, OEBA
Output Enable Inputs
LEAB, LEBA
Latch Enable Inputs
CEAB, CEBA
Chip Enable Inputs
A
0
–
A
7
B
0
–
B
7
Side A Inputs or 3-STATE Outputs
Side B Inputs or 3-STATE Outputs
Inputs
Latch
Output
CEAB LEAB OEAB
Status
Buffers
H
X
X
Latched
High Z
X
H
X
Latched
—
L
L
X
Transparent
—
X
X
H
—
High Z
L
X
L
—
Driving
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74FR74 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Dual D-Type Flip-Flop |
| 74FR74PC | 功能描述:觸發(fā)器 Dl D-Type Flip-Flop RoHS:否 制造商:Texas Instruments 電路數(shù)量:2 邏輯系列:SN74 邏輯類型:D-Type Flip-Flop 極性:Inverting, Non-Inverting 輸入類型:CMOS 輸出類型: 傳播延遲時(shí)間:4.4 ns 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:X2SON-8 封裝:Reel |
| 74FR74PCQR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Dual D-Type Flip-Flop |
| 74FR74PCX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Dual D-Type Flip-Flop |
| 74FR74SC | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Dual D-Type Flip-Flop |
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