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參數(shù)資料
| 型號： | 74F398PC |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | Quad 2-Port Register |
| 中文描述： | F/FAST SERIES, POSITIVE EDGE TRIGGERED D FLIP-FLOP, COMPLEMENTARY OUTPUT, PDIP16 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-16 |
| 文件頁數(shù)： | 3/10頁 |
| 文件大?。?/td> | 178K |
| 代理商： | 74F398PC |
Functional Description
The ’F398 and ’F399 are high-speed quad 2-port registers.
They select four bits of data from either of two sources
(Ports) under control of a common Select input (S). The
selected data is transferred to a 4-bit output register syn-
chronous with the LOW-to-HIGH transition of the Clock in-
put (CP). The 4-bit D-type output register is fully edge-trig-
gered. The Data inputs (I
0x
, I
1x
) and Select input (S) must be
stable only a setup time prior to and hold time after the
LOW-to-HIGH transition of the Clock input for predictable
operation. The ’F398 has both Q and Q outputs.
Function Table
Inputs
Outputs
S
I
0
I
1
Q
Q
*
I
I
I
X
X
I
h
L
H
L
H
H
L
H
L
h
X
X
h
h
H
e
HIGH Voltage Level
L
e
LOW Voltage Level
h
e
HIGH Voltage Level one setup time prior to the LOW-to-HIGH clock
transition
I
e
LOW Voltage Level one setup time prior to the LOW-to-HIGH clock
transition
X
e
Immaterial
*
’F398 only
Logic Diagram
TL/F/9533–9
*
’F398 Only
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
3
相關PDF資料 |
PDF描述 |
|---|---|
| 74F398PC | Quad 2-Port Register |
| 74F398 | Quad 2-Port Register |
| 74F398SC | Quad 2-Port Register |
| 74F398SCX | 2-Input Digital Multiplexer |
| 74F399SCX | 2-Input Digital Multiplexer |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 74F398SC | 功能描述:編碼器、解碼器、復用器和解復用器 Quad 2-Port Register 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| 74F398SCX | 功能描述:編碼器、解碼器、復用器和解復用器 Quad 2-Port Register 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| 74F399 | 制造商:Motorola 功能描述:74F399 MOT S1I2B |
| 74F399_UFH3026B WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| 74F399N | 制造商:SIG 功能描述:74F399 制造商:NXP Semiconductors 功能描述: |
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