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74LS243 参数 Datasheet PDF下载

74LS243图片预览
型号: 74LS243
PDF下载: 下载PDF文件 查看货源
内容描述: 四路总线收发器 [Quadruple Bus Transceiver]
分类和应用: 总线收发器
文件页数/大小: 5 页 / 56 K
品牌: FAIRCHILD [ FAIRCHILD SEMICONDUCTOR ]
 浏览型号74LS243的Datasheet PDF文件第1页浏览型号74LS243的Datasheet PDF文件第3页浏览型号74LS243的Datasheet PDF文件第4页浏览型号74LS243的Datasheet PDF文件第5页  
Absolute Maximum Ratings(Note 2)  
Supply Voltage  
Input Voltage  
Any G  
7V  
Note 2: The “Absolute Maximum Ratings” are those values beyond which  
the safety of the device cannot be guaranteed. The device should not be  
operated at these limits. The parametric values defined in the Electrical  
Characteristics tables are not guaranteed at the absolute maximum ratings.  
The “Recommended Operating Conditions” table will define the conditions  
for actual device operation.  
7V  
A or B  
5.5V  
Operating Free Air Temperature Range  
Storage Temperature Range  
0°C to +70°C  
65°C to +150°C  
Recommended Operating Conditions  
Symbol  
Parameter  
Min  
4.75  
2
Nom  
Max  
Units  
V
VCC  
VIH  
VIL  
IOH  
IOL  
TA  
Supply Voltage  
5
5.25  
HIGH Level Input Voltage  
LOW Level Input Voltage  
HIGH Level Output Current  
LOW Level Output Current  
Free Air Operating Temperature  
V
0.8  
15  
24  
V
mA  
mA  
°C  
0
70  
Electrical Characteristics  
over recommended operating free air temperature range (unless otherwise noted)  
Symbol Parameter Conditions  
Input Clamp Voltage  
Typ  
Min  
Max  
Units  
(Note 3)  
V
V
V
= Min, I = −18 mA  
1.5  
V
V
I
CC  
CC  
I
HYS  
Hysteresis (V V  
T+  
)
= Min  
0.2  
2.7  
2.4  
2
0.4  
T−  
(Data Inputs Only)  
V
HIGH Level Output Voltage  
V
V
V
V
V
V
V
V
V
V
V
V
= Min, V = Min  
OH  
CC IH  
= Max, I = −1 mA  
IL  
OH  
= Min, V = Min  
3.4  
V
CC  
IH  
= Max, I = −3 mA  
IL  
OH  
= Min, V = Min  
CC  
IH  
= 0.5V, I = Max  
IL  
OH  
V
LOW Level Output Voltage  
= Min  
I
I
= 12 mA  
= Max  
0.4  
OL  
CC  
OL  
OL  
= Max  
= Min  
V
IL  
0.5  
40  
IH  
CC  
I
I
I
Off-State Output Current,  
HIGH Level Voltage Applied  
Off-State Output Current,  
LOW Level Voltage Applied  
Input Current at Maximum  
Input Voltage  
= Max  
V
V
= 2.7V  
= 0.4V  
µA  
µA  
OZH  
OZL  
I
O
O
= Max  
= Min  
IL  
200  
IH  
V
= Max  
V = 5.5V  
A or B  
Any G  
0.1  
0.1  
20  
mA  
mA  
µA  
CC  
I
V = 7V  
I
I
I
I
I
HIGH Level Input Current  
LOW Level Input Current  
Short Circuit Output Current  
Supply Current  
V
V
V
V
= Max, V = 2.7V  
I
IH  
CC  
CC  
CC  
CC  
= Max, V = 0.4V  
0.2  
225  
38  
mA  
mA  
IL  
I
= Max (Note 4)  
40  
OS  
CC  
= Max  
Outputs HIGH  
Outputs LOW  
Outputs Disabled  
22  
29  
32  
Outputs  
OPEN  
50  
mA  
54  
Note 3: All typicals are at V = 5V, T = 25°C.  
CC  
A
Note 4: Not more than one output should be shorted at a time, and the duration should not exceed one second.  
www.fairchildsemi.com  
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