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參數(shù)資料
| 型號(hào)： | 74F299SC |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | Octal Universal Shift/Storage Register with Common Parallel I/O Pins |
| 中文描述： | F/FAST SERIES, 8-BIT BIDIRECTIONAL PARALLEL IN PARALLEL OUT SHIFT REGISTER, TRUE OUTPUT, PDSO20 |
| 封裝： | 0.300 INCH, PLASTIC, SOIC-20 |
| 文件頁(yè)數(shù)： | 2/10頁(yè) |
| 文件大小： | 194K |
| 代理商： | 74F299SC |
Connection Diagrams
Pin Assignment
for DIP, SOIC and Flatpak
TL/F/9515–2
Pin Assignment
for LCC
TL/F/9515–3
Unit Loading/Fan Out
54F/74F
Pin Names
Description
U.L.
Input I
IH
/I
IL
Output I
OH
/I
OL
HIGH/LOW
CP
DS
0
DS
7
S
0
, S
1
MR
OE
1
, OE
2
I/O
0
–I/O
7
Clock Pulse Input (Active Rising Edge)
Serial Data Input for Right Shift
Serial Data Input for Left Shift
Mode Select Inputs
Asynchronous Master Reset Input (Active LOW)
TRI-STATE Output Enable Inputs (Active LOW)
Parallel Data Inputs or
TRI-STATE Parallel Outputs
Serial Outputs
1.0/1.0
1.0/1.0
1.0/1.0
1.0/2.0
1.0/1.0
1.0/1.0
3.5/1.083
150/40(33.3)
50/33.3
20
m
A/
b
0.6 mA
20
m
A/
b
0.6 mA
20
m
A/
b
0.6 mA
20
m
A/
b
1.2 mA
20
m
A/
b
0.6 mA
20
m
A/
b
0.6 mA
70
m
A/
b
0.65 mA
b
3 mA/24 mA (20 mA)
b
1 mA/20 mA
Q
0
, Q
7
Functional Description
The ’F299 contains eight edge-triggered D-type flip-flops
and the interstage logic necessary to perform synchronous
shift left, shift right, parallel load and hold operations. The
type of operation is determined by S
0
and S
1
, as shown in
the Mode Select Table. All flip-flop outputs are brought out
through TRI-STATE buffers to separate I/O pins that also
serve as data inputs in the parallel load mode. Q
0
and Q
7
are also brought out on other pins for expansion in serial
shifting of longer words.
A LOW signal on MR overrides the Select and CP inputs
and resets the flip-flops. All other state changes are initiated
by the rising edge of the clock. Inputs can change when the
clock is in either state provided only that the recommended
setup and hold times, relative to the rising edge of CP, are
observed.
A HIGH signal on either OE
1
or OE
2
disables the TRI-
STATE buffers and puts the I/O pins in the high impedance
state. In this condition the shift, hold, load and reset opera-
tions can still occur. The TRI-STATE outputs are also dis-
abled by HIGH signals on both S
0
and S
1
in preparation for
a parallel load operation.
Mode Select Table
Inputs
Response
MR S
1
S
0
CP
L
H
H
H
H
X
H
L
H
L
X
H
L
Parallel Load; I/O
Q
n
H
L
Shift Right; DS
0
x
Q
0
, Q
0
x
Q
1
, etc.
L
L
Shift Left; DS
7
x
Q
7
, Q
7
x
Q
6
, etc.
L
X
Hold
X
Asynchronous Reset; Q
0
–Q
7
e
LOW
H
e
HIGH Voltage Level
L
e
LOW Voltage Level
X
e
Immaterial
L
e
LOW-to-HIGH Clock Transition
2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74F299SJ | Octal Universal Shift/Storage Register with Common Parallel I/O Pins |
| 74F299PC | Octal Universal Shift/Storage Register with Common Parallel I/O Pins |
| 74F299SC | Octal Universal Shift/Storage Register with Common Parallel I/O Pins |
| 74F299SJ | CABLE MARKER, A REEL 2.4M |
| 74F299 | Octal Universal Shift/Storage Register with Common Parallel I/O Pins |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74F299SCX | 功能描述:計(jì)數(shù)器移位寄存器 Oct Univ Shf/Sto Reg RoHS:否 制造商:Texas Instruments 計(jì)數(shù)器類型: 計(jì)數(shù)順序:Serial to Serial/Parallel 電路數(shù)量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數(shù)量:1 輸出類型:Open Drain 傳播延遲時(shí)間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
| 74F299SJ | 功能描述:計(jì)數(shù)器移位寄存器 Oct Univ Shf/Sto Reg RoHS:否 制造商:Texas Instruments 計(jì)數(shù)器類型: 計(jì)數(shù)順序:Serial to Serial/Parallel 電路數(shù)量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數(shù)量:1 輸出類型:Open Drain 傳播延遲時(shí)間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
| 74F299SJX | 功能描述:計(jì)數(shù)器移位寄存器 Oct Univ Shf/Sto Reg RoHS:否 制造商:Texas Instruments 計(jì)數(shù)器類型: 計(jì)數(shù)順序:Serial to Serial/Parallel 電路數(shù)量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數(shù)量:1 輸出類型:Open Drain 傳播延遲時(shí)間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
| 74F30 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-input NAND gate |
| 74F30_04 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:8-Input NAND Gate |
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