PALLV22V10 Datasheet, PDF (13/19 Pages) Lattice Semiconductor – Low-Voltage Zero Power 24-Pin EE CMOS Versatile PAL Device

KEY TO SWITCHING WAVEFORMS
WAVEFORM
INPUTS
OUTPUTS
Must be
Steady
Will be
Steady
May
Change
from H to L
Will be
Changing
from H to L
May
Will be
DEVICSEIGSNFSOR ^{SWITCHING TEST CIRCUIT}
Change
from L to H
Don’t Care,
Any Change
Permitted
Does Not
Apply
Changing
from L to H
Changing,
State
Unknown
Center
Line is High-
Impedance
“Off” State
VCC
18956D-013
AL ^DE _S1
SE ^{G NEWR1}
U ^Output
Test Point
R₂
C_L
S₂
18956D-014
Specification
t_PD, t_CO
t_EA
t_ER
S₁
Closed
Z → H: Open
Z →L: Closed
H →Z: Closed
L →Z: Closed
S₂
Closed
Z → H: Closed
Z →L: Open
H → Z: Closed
L →Z: Open
C_L
30 pF
5 pF
R₁
1.6K Ω
R₂
1.6K Ω
Measured
Output Value
V_CC/2
V_CC/2
H → Z: V_OH - 0.5 V
L →Z: V_OL + 0.5 V
PALLV22V10 and PALLV22V10Z Families
13