NTE8542 データシートの表示（PDF） - NTE Electronics
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NTE8542 Datasheet PDF : 4 Pages
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Electrical Characteristics (Cont’d): (Notes 2 and 3)
Parameter
Symbol
Test Conditions
Date to Clock Set−Up Time
Date to Clock Set−Up Time
Data to Clock Hold Time
Data to Clock Hold Time
Minimum Clock Pulse Width
Minimum Clear Pulse Width
tSO
tSI
tHO
tHI
PWMIN
PWMIN
RL = 400Ω, CL = 50pF
TA = 25°C
RL = 400Ω, CL = 50pF
TA = 25°C
RL = 400Ω, CL = 50pF
TA = 25°
RL = 400Ω, CL = 50pF
TA = 25°C
RL = 400Ω, CL = 50pF
TA = 25°C
RL = 400Ω, CL = 50pF
TA = 25°C
Min Typ Max Unit
10 4.5 − ns
5.0 −4.0 − ns
10 4.5 − ns
5.0 −3.5 − ns
20 − − ns
20 − − ns
Note 2. Unless otherwise specified min/max limits apply across the 0°C to +70°C range for the
NTE8542. All typicals are given for VCC = 5.0V and TA = 25°C.
Note 3. All currents into device pins shown as positive, out of device pins as negative, all voltages
referenced to GND unless otherwise noted. All values shown as max or min on absolute
value basis.
MODE OF OPERATION:
CLEAR DIS1 DIS2
E1
0
0
1
1
0
1
0
1
0
0
0
1
0
1
1
1
0
X
X
0
0
X
X
1
0
X
X
0
1
X
X
X
X = Don’t Care State
QN = Data After Clock Transition
E2
A1 − 4 B1 − 4
Comments
1
Q
Hi−z Output Data to Bus A
1
Hi−z
Q Output Data to Bus B
1
Q
Q Output Data to Both Buses
1
Hi−z Hi−z Store Data With Outputs
in Hi−z State
1
Data
QN Enter Data From Bus A
0
QN
Data Enter Data From Bus B
0
Data Data Enter Data From Both
Buses (Logic “1” on Either
Will Dominate)
X
X
X Clear
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