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Page Title:
Figure 3. Truth tables asynchronous truth table, device type 06 |
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|  MIL-M-38510/13G
SYNCHRONOUS TRUTH TABLE, DEVICE TYPES 04 AND 06
Inputs at time tn
Outputs at time tn+1
QB
QC
QD
QA
Clock
Enable
Enable
Load
A
B
C
D
Clear
Carry output
P
T
CP
L
X
H
X
X
X
X
H
NC
NC
NC
NC
NC
CP
X
L
H
X
X
X
X
H
NC
NC
NC
NC
L
CP
H
H
H
X
X
X
X
H
Previous count
H if count = 15
plus 1 (note 1)
L if count < 15
CP
X
H
L
X
X
X
X
H
A
B
C
D
H if count = 15
L if count < 15
CP
X
L
L
X
X
X
X
H
A
B
C
D
L
ASYNCHRONOUS TRUTH TABLE, DEVICE TYPE 06
Inputs at time tn
Outputs at time tn+1
Enable
Enable
Carry
Clock
Load
A
B
C
D
Clear
QA
QB QC QD
P
T
output
X
X
X
X
X
X
X
X
L
L
L
L
L
L
NOTES:
UP Count Sequence Table
1. See UP count sequence table.
QA
QB
QC
QD
2. L = VIL for inputs, VOL for outputs.
(LSB)
(MSB)
3. H = VIH for inputs, VOH for outputs.
L
L
L
L
H
L
L
L
4. X = VIH or VIL.
L
H
L
L
5. CP = clock pulse.
H
H
L
L
6. NC = no change.
L
L
H
L
H
L
H
L
L
H
H
L
H
H
H
L
L
L
L
H
H
L
L
H
L
H
L
H
H
H
L
H
L
L
H
H
H
L
H
H
L
H
H
H
H
H
H
H
FIGURE 3. Truth tables - Continued.
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