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
Change
from L to H
Will be
Changing
from L to H
Don’t Care,
Any Change
Permitted
Changing,
State
Unknown
Does Not
Apply
Center
Line is High-
Impedance
“Off” State
KS000010-PAL
SWITCHING TEST CIRCUIT
5 V
S
1
R
1
2
Output
Test Point
R
C
L
20405B-20
Commercial
Specification
, t
S
C
R
R
2
Measured Output Value
1
L
1
t
Closed
PD CO
35 pF
5 pF
1.5 V
Z → H: Open
Z → L: Closed
t
EA
300 Ω
390 Ω
H → Z: Open
L → Z: Closed
H → Z: V – 0.5 V
OH
t
ER
L → Z: V + 0.5 V
OL
* Switching several outputs simultaneously should be avoided for accurate measurement.
MACH211SP-7/10/12/15/20
27
AMD [ AMD ]
