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74AC280 数据表(PDF) 4 Page - STMicroelectronics

部件名 74AC280
功能描述  9 BIT PARITY GENERATOR
PDF  8 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

74AC280 数据表(HTML) 4 Page - STMicroelectronics

  74AC280 Datasheet HTML 1Page - STMicroelectronics 74AC280 Datasheet HTML 2Page - STMicroelectronics 74AC280 Datasheet HTML 3Page - STMicroelectronics 74AC280 Datasheet HTML 4Page - STMicroelectronics 74AC280 Datasheet HTML 5Page - STMicroelectronics 74AC280 Datasheet HTML 6Page - STMicroelectronics 74AC280 Datasheet HTML 7Page - STMicroelectronics 74AC280 Datasheet HTML 8Page - STMicroelectronics  
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CAPACITIVE CHARACTERISTICS
Symb ol
Parameter
Test Co nditi ons
Valu e
Un it
VCC
(V)
TA =25
oC
-40 to 85
oC
Min.
T yp.
Max.
Mi n.
Max.
CIN
Input Capacitance
5.0
4
pF
CPD
Power Dissipation
Capacitance (note 1)
5.0
27
pF
1) CPD isdefined as the value of the IC’sinternal equivalent capacitance which is calculated fromthe operating current consumption without load. (Referto
Test Circuit).Average operating current can be obtained by the following equation. ICC(opr) = CPD
• VCC • fIN +ICC
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, RL = 500
Ω, Input tr =tf =3 ns)
Symb ol
Parameter
T est Con ditio n
Valu e
Un it
VCC
(V)
TA =25
oC
-40 to 85
oC
Min.
T yp.
Max.
Mi n.
Max.
tPLH
tPHL
Propagation Delay Time
(Input -
ΣODD, ΣEVEN)
3.3
(*)
1.5
5
17.0
1
18.5
ns
5.0
(**)
1.5
4
13.0
1
14.5
(*) Voltage range is 3.3V
± 0.3V
(**) Voltage range is 5V
± 0.5V
DC SPECIFICATIONS
Symb ol
Parameter
Test Co nditi ons
Valu e
Un it
VCC
(V)
TA =25
oC
-40 to 85
oC
Min.
T yp.
Max.
Mi n.
Max.
VIH
High Level Input Voltage
3.0
VO = 0.1 V or
VCC - 0.1 V
2.1
1.5
2.1
V
4.5
3.15
2.25
3.15
5.5
3.85
2.75
3.85
VIL
Low Level Input Voltage
3.0
VO = 0.1 V or
VCC - 0.1 V
1.5
0.9
0.9
V
4.5
2.25
1.35
1.35
5.5
2.75
1.65
1.65
VOH
High Level Output
Voltage
3.0
VI
(* ) =
VIH or
VIL
IO=-50
µA
2.9
2.99
2.9
V
4.5
IO=-50
µA
4.4
4.49
4.4
5.5
IO=-50
µA
5.4
5.49
5.4
3.0
IO=-12 mA
2.56
2.46
4.5
IO=-24 mA
3.86
3.76
5.5
IO=-24 mA
4.86
4.76
VOL
Low Level Output
Voltage
3.0
VI
(* ) =
VIH or
VIL
IO=50
µA
0.002
0.1
0.1
V
4.5
IO=50
µA
0.001
0.1
0.1
5.5
IO=50
µA
0.001
0.1
0.1
3.0
IO=12 mA
0.36
0.44
4.5
IO=24 mA
0.36
0.44
5.5
IO=24 mA
0.36
0.44
II
Input Leakage Current
5.5
VI =VCC or GND
±0.1
±1
µA
ICC
Quiescent Supply
Current
5.5
VI =VCC or GND
4
40
µA
IOLD
Dynamic Output Current
(note 1, 2)
5.5
VOLD = 1.65 V max
75
mA
IOHD
VOHD = 3.85 V min
-75
mA
1) Maximum test duration 2ms, one output loaded attime
2) Incident wave switching is guaranteed on transmission lines with impedances as low as 50
Ω.
(*) All outputs loaded.
74AC280
4/8



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