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參數(shù)資料
| 型號： | 74F373 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Octal Transparent Latch with TRI-STATE Outputs(帶三態(tài)輸出八路透明鎖存器) |
| 中文描述： | 八路透明鎖存器與三態(tài)輸出（帶三態(tài)輸出八路透明鎖存器） |
| 文件頁數(shù)： | 2/8頁 |
| 文件大?。?/td> | 174K |
| 代理商： | 74F373 |
Unit Loading/Fan Out
54F/74F
Pin Names
Description
U.L.
Input I
IH
/I
IL
Output I
OH
/I
OL
HIGH/LOW
D
0
–D
7
LE
OE
O
0
–O
7
Data Inputs
Latch Enable Input (Active HIGH)
Output Enable Input (Active LOW)
TRI-STATE Latch Outputs
1.0/1.0
1.0/1.0
1.0/1.0
150/40 (33.3)
20
m
A/
b
0.6 mA
20
m
A/
b
0.6 mA
20
m
A/
b
0.6 mA
b
3 mA/24 mA (20 mA)
Functional Description
The ’F373 contains eight D-type latches with TRI-STATE
output buffers. When the Latch Enable (LE) input is HIGH,
data on the D
n
inputs enters the latches. In this condition
the latches are transparent, i.e., a latch output will change
state each time its D input changes. When LE is LOW, the
latches store the information that was present on the D in-
puts a setup time preceding the HIGH-to-LOW transition of
LE. The TRI-STATE buffers are controlled by the Output
Enable (OE) input. When OE is LOW, the buffers are in the
bi-state mode. When OE is HIGH the buffers are in the high
impedance mode but this does not interfere with entering
new data into the latches.
Truth Table
Inputs
Output
LE
OE
D
n
O
n
H
H
L
X
L
L
L
H
H
L
X
X
H
L
O
n
(no change)
Z
H
e
HIGH Voltage Level
L
e
LOW Voltage Level
X
e
Immaterial
Z
e
High Impedance State
Logic Diagram
TL/F/9523–5
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74F373MSA | Octal Transparent Latch with TRI-STATE Outputs |
| 74F373PC | Octal Transparent Latch with TRI-STATE Outputs |
| 74F373SJ | Octal Transparent Latch with TRI-STATE Outputs |
| 74F373SC | Octal Transparent Latch with TRI-STATE Outputs |
| 74F373MSA | Octal Transparent Latch with 3-STATE Outputs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74F373D | 制造商:NXP Semiconductors 功能描述: 制造商:NXP Semiconductors 功能描述:74F373D 制造商:Texas Instruments 功能描述:74F373D |
| 74F373DC | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| 74F373DW | 制造商:SIG 功能描述:74F373 SIG'90 tube SMT SHELF |
| 74F373LC | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| 74F373MSA | 功能描述:閉鎖 Octal Trans Latch RoHS:否 制造商:Micrel 電路數(shù)量:1 邏輯類型:CMOS 邏輯系列:TTL 極性:Non-Inverting 輸出線路數(shù)量:9 高電平輸出電流: 低電平輸出電流: 傳播延遲時間: 電源電壓-最大:12 V 電源電壓-最小:5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-16 封裝:Reel |
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