HP 5340A Operating And Service Manual page 68

Figure 4-28. Low-Power BCD Decade Counter 1820-0669
LOGIC SYMBOL
,
STATE D I A G R A M
LOGIC EQUATIONS
Count Enable
T C f o r
TC
f o r
Preset =
Reset
=
N O T E
The 931.10
c a n be p r e s e t
13,
preset
normal sequence
w i t h i n t w o c l o c k pulses
M O D E SELECTION
PE CEP CET M O DE
Preset
Preset
Preset
Preset
N o Change
N o Change
N o Change
Count
H I G H )
=
P I N N A M E S
PE
CEP
CET
M R
TC
. .
CEP CET PE
=
. .
. .
=
.
.
CET
.
edge)
c l o c k
beyond 9
b u r w i l l c o u n t
15.
o r w i l l r e l o r n i t s
T E R M I N A L COUNT G E N E R A T I O N
T C = C E T 0 0 0 0 0 1 0 0 2 0 0 3 ( 9 3 L 1 6 )
Model 5340A
Theory of Operation
Parallel Enable (Active LOW) Input
Parallel Inputs
Count Enable Parallel Input
Count Enable Trickle Input
Clock (Active H I G H Going Edge) Input
Master Reset (Active LOW) Input
Parallel Outputs
Terminal Count Outputs
H H I G H Voltage Level
=
L LOW Voltage Level
=
4-21