74C911 查看數據表（PDF） - Fairchild Semiconductor
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74C911 Datasheet PDF : 8 Pages
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AC Electrical Characteristics (Note 4)
VCC = 5V, tr = tf = 20 ns, CL = 50 pF
Symbol
Parameter
Conditions
tCW
tAW
tWW
tDW
tWD
tWA
tWC
t1H, t0H
tH1, tH0
tD1, tD0
tIB
fMUX
Chip Enable to Write Enable Set-Up Time
Address to Write Enable Set-Up Time
Write Enable Width
Data to Write Enable Set-Up Time
Write Enable to Data Hold Time
Write Enable to Address Hold Time
Write Enable to Chip Enable Hold Time
Logical “1”, Logical “0” Levels into 3-STATE
3-STATE to Logical “1” or
Logical “0” Levels
Propagation Delay from Digit Input to
Segment Output
Interdigit Blanking Time
Multiplex Scan Frequency
TJ = 25°C
TJ = 125°C
TJ = 25°C
TJ = 125°C
TJ = 25°C
TJ = 125°C
TJ = 25°C
TJ = 125°C
TJ = 25°C
TJ = 125°C
TJ = 25°C
TJ = 125°C
TJ = 25°C
TJ = 125°C
RL=10k, CL=10 pF
TJ = 25°C
TJ = 125°C
RL=10k, CL=10 pF
TJ = 25°C
TJ = 125°C
TJ = 25°C
TJ = 125°C
TJ = 25°C
TJ = 125°C
TJ = 25°C
TJ = 125°C
CIN
Input Capacitance
(Note 5)
COUT
3-STATE Output Capacitance
(Note 5)
Note 4: AC Parameters are guaranteed by DC correlated testing.
Note 5: Capacitance guaranteed by periodic testing.
Switching Time Waveforms
Write Data Waveforms
Min
Typ
Max
Units
35
15
ns
50
20
ns
35
15
ns
50
20
ns
400
225
ns
450
250
ns
390
225
ns
430
250
ns
0
−10
ns
0
−15
ns
0
−10
ns
0
−15
ns
55
30
ns
75
40
ns
275
500
ns
325
600
ns
325
600
ns
375
700
ns
500
1000
ns
700
1400
ns
5
10
µs
10
20
µs
525
Hz
375
Hz
5
7.5
pF
30
50
pF
3-STATE Waveforms
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