MM74C912N 데이터 시트보기 (PDF) - Fairchild Semiconductor
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MM74C912N Datasheet PDF : 8 Pages
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AC Electrical Characteristics (Note 5)
VCC = 5V, tr = tf = 20 ns, CL = 50 pF
Symbol
Parameter
Conditions
tCW
tAW
tWW
tDW
tWD
tWA
tWC
t1H, t0H
tH1, tH0
tIB
fMUX
Chip Enable to Write
Enable Setup Time
Address to Write
Enable Setup Time
Write Enable Width
Data to Write Enable
Setup 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” to
Logical “0” Level
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, TJ = 25°C
CL = 10 pF, TJ = 125°C
RL = 10k, TJ = 25°C
CL = 50 pF, TJ = 125°C
TJ = 25°C
TJ = 125°C
TJ = 25°C
TJ = 125°C
CIN
Input Capacitance
(Note 6)
COUT
3-STATE Output Capacitance
(Note 6)
Note 5: AC Parameters are guaranteed by DC correlated testing.
Note 6: Capacitance is guaranteed by periodic testing.
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
50
30
ns
75
40
ns
275
500
ns
325
600
ns
325
600
ns
375
700
ns
5
10
µs
10
20
µs
350
Hz
250
Hz
5
7.5
pF
30
50
pF
5
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