PALCE16V8 Datasheet, PDF (21/26 Pages) Advanced Micro Devices – EE CMOS 20-Pin Universal Programmable Array Logic

AMD
KEY TO SWITCHING WAVEFORMS
WAVEFORM
SWITCHING TEST CIRCUIT
INPUTS
Must be
Steady
May
Change
from H to L
May
Change
from L to H
Don’t Care,
Any Change
Permitted
Does Not
Apply
OUTPUTS
Will be
Steady
Will be
Changing
from H to L
Will be
Changing
from L to H
Changing,
State
Unknown
Center
Line is High-
Impedance
“Off” State
KS000010-PAL
5V
S1
R1
Output
Test Point
R2
CL
16493D-12
Specification
tPD, tCO
tEA
tER
2-56
S1
Closed
Z → H: Open
Z → L: Closed
H → Z: Open
L → Z: Closed
Commercial
CL
R1
R2
50 pF
5 pF
200 Ω
PALCE16V8 Family
390 Ω
H-5:
200 Ω
Measured
Output Value
1.5 V
1.5 V
H → Z: VOH – 0.5 V
L → Z: VOL + 0.5 V