MM74C89 查看數據表（PDF） - Fairchild Semiconductor
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MM74C89 Datasheet PDF : 6 Pages
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AC Electrical Characteristics (Note 2)
TA = 25°C, CL = 50 pF, unless otherwise noted
Symbol
Parameter
Conditions
Min
Typ
Max
Units
tpd
tACC
tSA
tHA
tME
tSR
tWS
tWE
tHD
tSD
t1H, t0H
Propagation Delay from
Memory Enable
Access Time from
Address Input
Address Setup Time
Address Hold Time
Memory Enable Pulse Width
Write Enable Setup
Time for a Read
Write Enable Setup
Time for a Write
Write Enable Pulse Width
Data Input Hold Time
Data Input Setup
Propagation Delay from a Logical
“1” or Logical “0” to the High
Impedance State from
VCC = 5V
VCC = 10V
VCC = 5V
VCC = 10V
VCC = 5V
VCC = 10V
VCC = 5V
VCC = 10V
VCC = 5V
VCC = 10V
VCC = 5V
VCC = 10V
VCC = 5V
VCC = 10V
VCC = 5V, tWS = 0
VCC = 10V, tWS = 0
VCC = 5V
VCC = 10V
VCC = 5V
VCC = 10V
VCC = 5V, CL = 5 pF, RL = 10k
VCC = 10V, CL = 5 pF, RL = 10k
270
500
ns
100
220
ns
350
650
ns
130
280
ns
150
ns
60
ns
60
ns
40
ns
400
250
ns
150
90
ns
0
ns
0
ns
tME
ns
tME
ns
300
160
ns
100
60
ns
50
ns
25
ns
50
ns
25
ns
180
300
ns
−85
120
ns
Memory Enable
t1H, t0H
Propagation Delay from a Logical
“1” or Logical “0” to the High
Impedance State from
VCC = 50V, CL = 5 pF, RL = 10k
VCC = 10V, CL = 5 pF, RL = 10k
180
300
ns
85
120
ns
Write Enable
CIN
Input Capacity
Any Input (Note 3)
COUT
Output Capacity
Any Output (Note 3)
CPD
Power Dissipation Capacity
(Note 4)
Note 2: AC Parameters are guaranteed by DC correlated testing.
5
pF
6.5
pF
230
pF
Note 3: Capacitance is guaranteed by periodic testing.
Note 4: CPD determines the no load AC power consumption of any CMOS device. For complete explanation see Family Characteristics application note,
AN-90.
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