Datasheet

MOTOROLA CMOS LOGIC DATA
53
MC14014B MC14021B
SWITCHING CHARACTERISTICS (C
L
= 50 pF, T
A
= 25 C)
Characteristic Symbol
V
DD
Vdc
Min Typ # Max Unit
Output Rise and Fall Time
t
TLH
, t
THL
= (1.5 ns/pF) C
L
+ 25 ns
t
TLH
, t
THL
= (0.75 ns/pF) C
L
+ 12.5 ns
t
TLH
, t
THL
= (0.55 ns/pF) C
L
+ 9.5 ns
t
TLH
,
t
THL
5.0
10
15
—
—
—
100
50
40
200
100
80
ns
Propagation Delay Time (Clock to Q, P/S to Q)
t
PHL
, t
PLH
= (1.7 ns/pF) C
L
+ 315 ns
t
PHL
, t
PLH
= (0.66 ns/pF) C
L
+ 137 ns
t
PHL
, t
PLH
= (0.5 ns/pF) C
L
+ 90 ns
t
PLH
,
t
PHL
5.0
10
15
—
—
—
400
170
115
800
340
230
ns
Clock Pulse Width t
WH
5.0
10
15
400
175
135
150
75
40
—
—
—
ns
Clock Frequency f
cl
5.0
10
15
—
—
—
3.0
6.0
8.0
1.5
3.0
4.0
MHz
Parallel/Serial Control Pulse Width t
WH
5.0
10
15
400
175
135
150
75
40
—
—
—
ns
Setup Time
P/S to Clock
t
su
5.0
10
15
200
100
80
100
50
40
—
—
—
ns
Hold Time
Clock to P/S
t
h
5.0
10
15
20
20
25
– 2.5
– 10
0
—
—
—
ns
Setup Time
Data (Parallel or Serial) to
Clock or P/S
t
su
5.0
10
15
350
80
60
150
50
30
—
—
—
ns
Hold Time
Clock to D
s
t
h
5.0
10
15
45
35
35
0
0
5
—
—
—
ns
Hold Time
Clock to P
n
t
h
5.0
10
15
50
45
45
25
20
20
—
—
—
ns
Input Clock Rise Time t
r(cl)
5.0
10
15
—
—
—
—
—
—
15
5
4
µs
* The formulas given are for the typical characteristics only at 25 C.
#Data labelled “Typ” is not to be used for design purposes but is intended as an indication of the IC’s potential performance.
Figure 1. Output Source Current Test Circuit Figure 2. Output Sink Current Test Circuit
PULSE
GENERATOR
PULSE
GENERATOR
V
DD
V
out
I
OH
EXTERNAL
POWER
SUPPLY
EXTERNAL
POWER
SUPPLY
P/S
C
P6
P7
P8
D
S
Q8
Q7
Q6
Preset output under test to a logic “1” level.
V
DD
V
out
P/S
C
P6
P7
P8
D
S
Q8
Q7
Q6
I
OL