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参数资料
| 型号： | SNJ54AS194FK |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 计数移位寄存器 |
| 英文描述： | AS SERIES, 4-BIT BIDIRECTIONAL PARALLEL IN PARALLEL OUT SHIFT REGISTER, TRUE OUTPUT, CQCC20 |
| 封装： | CERAMIC, LCC-20 |
| 文件页数： | 14/18页 |
| 文件大小： | 662K |
| 代理商： | SNJ54AS194FK |
SN54AS194, SN74AS194
4BIT BIDIRECTIONAL UNIVERSAL SHIFT REGISTERS
SDAS212A DECEMBER 1983 REVISED DECEMBER 1994
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
recommended operating conditions
SN54AS194
SN74AS194
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
UNIT
VCC
Supply voltage
4.5
5
5.5
4.5
5
5.5
V
VIH
High-level input voltage
2
V
VIL
Low-level input voltage
0.8
V
IOH
High-level output current
2
mA
IOL
Low-level output current
20
mA
fclock*
Clock frequency
0
75
0
80
MHz
CLR
4
4.5
tw*
Pulse duration
CLK high
4
ns
tw*
Pulse duration
CLK low
6
7
ns
Select
9
9.5
tsu*
Setup time before CLK
↑
Data
3.5
4
ns
tsu*
Setup time before CLK
↑
Clear inactive state
6
ns
th*
Hold time, data after CLK
↑
0.5
ns
TA
Operating free-air temperature
55
125
0
70
°C
* On products compliant to MIL-STD-883, Class B, these parameters are based on characterization data, but are not production tested.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54AS194
SN74AS194
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
VIK
VCC = 4.5 V,
II = 18 mA
1.2
V
VOH
VCC = 4.5 V to 5.5 V,
IOH = 2 mA
VCC 2
V
VOL
VCC = 4.5 V,
IOL = 20 mA
0.35
0.5
0.35
0.5
V
II
Data, CLK, CLR
VCC = 5.5 V,
VI = 7 V
0.1
mA
II
Mode, SL, SR
VCC = 5.5 V,
VI = 7 V
0.2
mA
IIH
Data, CLK, CLR
VCC = 5.5 V,
VI = 2.7 V
20
A
IIH
Mode, SL, SR
VCC = 5.5 V,
VI = 2.7 V
40
A
IIL
Data, CLK, CLR
VCC = 5.5 V,
VI = 0.4 V
0.5
mA
IIL
Mode, SL, SR
VCC = 5.5 V,
VI = 0.4 V
1
mA
IO
VCC = 5.5 V,
VO = 2.25 V
30
112
30
112
mA
ICC
VCC = 5.5 V
Outputs high
30
49
30
43
mA
ICC
VCC = 5.5 V
Outputs low
38
60
38
53
mA
All typical values are at VCC = 5 V, TA = 25°C.
The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
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