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MC74AC373, MC74ACT373
http://onsemi.com
2
TRUTH TABLE
Inputs
Outputs
OE
LE
D
n
O
n
H
L
L
L
X
H
H
L
X
L
H
X
Z
L
H
O
0
H = HIGH Voltage Level
L = LOW Voltage Level
Z = High Impedance
X = Immaterial
O
0
= Previous O
0
before LOW-to-HIGH Transition of Clock
FUNCTIONAL DESCRIPTION
The MC74AC373/74ACT373 contains eight Dtype
latches with 3state standard outputs. 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 inputs a setup time preceding the
HIGHtoLOW transition of LE. The 3-state standard
outputs are controlled by the Output Enable (OE) input.
When OE is LOW, the standard outputs are in the 2state
mode. When OE is HIGH, the standard outputs are in the
high impedance mode but this does not interfere with
entering new data into the latches.
Figure 3. Logic Diagram
D
G
O
D
G
O
D
G
O
D
G
O
D
G
O
D
G
O
D
G
O
D
G
O
D
1
D
2
D
3
D
4
D
5
D
6
D
7
LE
OE
D
0
NOTE:
This diagram is provided only for the understanding of logic operations and
should not be used to estimate propagation delays.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC74ACT373MEL | Octal Transparent Latch with 3−State Outputs |
| MC74ACT373MELG | Octal Transparent Latch with 3−State Outputs |
| MC74ACT373NG | Octal Transparent Latch with 3−State Outputs |
| MC74AC374DTR2 | Octal D−Type Flip−Flop with 3−State Outputs |
| MC74AC374DWG | Octal D−Type Flip−Flop with 3−State Outputs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC74ACT373M | 制造商:ON Semiconductor 功能描述: |
| MC74ACT373MEL | 功能描述:閉鎖 5V Octal Transparent 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(shí)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 |
| MC74ACT373MELG | 功能描述:閉鎖 5V Octal Transparent w/3 State Outupts 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(shí)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 |
| MC74ACT373ML1 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC74ACT373MR2 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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