- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄158851 > 74LS279 (Fairchild Semiconductor Corporation) Quad S-R Latch PDF資料下載
參數(shù)資料
| 型號： | 74LS279 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | Quad S-R Latch |
| 中文描述： | 四SR鎖存器 |
| 文件頁數(shù)： | 2/4頁 |
| 文件大?。?/td> | 47K |
| 代理商： | 74LS279 |
www.fairchildsemi.com
2
DM74LS279
Absolute Maximum Ratings(Note 3)
Note 3: 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.
Recommended Operating Conditions
Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Note 4: All typicals are at VCC = 5V, TA = 25°C.
Note 5: Not more than one output should be shorted at a time, and the duration should not exceed one second.
Note 6: ICC is measured with all R inputs grounded, all S inputs at 4.5V and all outputs OPEN.
Switching Characteristics
at VCC = 5V and TA = 25°C
Supply Voltage
7V
Input Voltage
7V
Operating Free Air Temperature Range
0
°C to +70°C
Storage Temperature Range
65°C to +150°C
Symbol
Parameter
Min
Nom
Max
Units
VCC
Supply Voltage
4.75
5
5.25
V
VIH
HIGH Level Input Voltage
2
V
VIL
LOW Level Input Voltage
0.8
V
IOH
HIGH Level Output Current
0.4
mA
IOL
LOW Level Output Current
8
mA
TA
Free Air Operating Temperature
0
70
°C
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 4)
VI
Input Clamp Voltage
VCC = Min, II = 18 mA
1.5
V
VOH
HIGH Level
VCC = Min, IOH = Max
2.7
3.5
V
Output Voltage
VIL = Max, VIH = Min
VOL
LOW Level
VCC = Min, IOL = Max
0.35
0.5
Output Voltage
VIL = Max, VIH = Min
V
IOL = 4 mA, VCC = Min
0.25
0.4
II
Input Current @ Max Input Voltage
VCC = Max, VI = 7V
0.1
mA
IIH
HIGH Level Input Current
VCC = Max, VI = 2.7V
20
A
IIL
LOW Level Input Current
VCC = Max, VI = 0.4V
0.4
mA
IOS
Short Circuit Output Current
VCC = Max (Note 5)
20
100
mA
ICC
Supply Current
VCC = Max (Note 6)
3.8
7
mA
From (Input)
RL = 2 k
Symbol
Parameter
To (Output)
CL = 15 pF
CL = 50 pF
Units
Min
Max
Min
Max
tPLH
Propagation Delay Time
S to Q
22
25
ns
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
S to Q
15
23
ns
HIGH-to-LOW Level Output
tPHL
Propagation Delay Time
R to Q
27
33
ns
HIGH-to-LOW Level Output
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74LS298 | Quad 2-Port Register Multiplexer with Storage |
| 74LS30 | 8-Input NAND Gate |
| 74LS32 | Quad 2-Input OR Gate |
| 74LS47 | BCD to 7-Segment Decoder/Driver with Open-Collector Outputs |
| 74LS645 | Octal Bus Transceiver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74LS279 WAF | 制造商:Texas Instruments 功能描述: |
| 74LS279PC | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| 74LS27DC | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| 74LS27FC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TRIPLE 3-INPUT NOR GATE |
| 74LS27N | 制造商:Texas Instruments 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。