Datasheet

MOTOROLA CMOS LOGIC DATA
11
MC14001B
B–SERIES GATE SWITCHING TIMES
SWITCHING CHARACTERISTICS* (C
L
= 50 pF, T
A
= 25 C)
Characteristic Symbol
V
DD
Vdc
Min Typ # Max Unit
Output Rise Time, All B–Series Gates
t
TLH
= (1.35 ns/pF) C
L
+ 33 ns
t
TLH
= (0.60 ns/pF) C
L
+ 20 ns
t
TLH
= (0.40 ns/PF) C
L
+ 20 ns
t
TLH
5.0
10
15
—
—
—
100
50
40
200
100
80
ns
Output Fall Time, All B–Series Gates
t
THL
= (1.35 ns/pF) C
L
+ 33 ns
t
THL
= (0.60 ns/pF) C
L
+ 20 ns
t
THL
= (0.40 ns/pF) C
L
+ 20 ns
t
THL
5.0
10
15
—
—
—
100
50
40
200
100
80
ns
Propagation Delay Time
MC14001B, MC14011B only
t
PLH
, t
PHL
= (0.90 ns/pF) C
L
+ 80 ns
t
PLH
, t
PHL
= (0.36 ns/pF) C
L
+ 32 ns
t
PLH
, t
PHL
= (0.26 ns/pF) C
L
+ 27 ns
All Other 2, 3, and 4 Input Gates
t
PLH
, t
PHL
= (0.90 ns/pF) C
L
+ 115 ns
t
PLH
, t
PHL
= (0.36 ns/pF) C
L
+ 47 ns
t
PLH
, t
PHL
= (0.26 ns/pF) C
L
+ 37 ns
8–Input Gates (MC14068B, MC14078B)
t
PLH
, t
PHL
= (0.90 ns/pF) C
L
+ 155 ns
t
PLH
, t
PHL
= (0.36 ns/pF) C
L
+ 62 ns
t
PLH
, t
PHL
= (0.26 ns/pF) C
L
+ 47 ns
t
PLH
, t
PHL
5.0
10
15
5.0
10
15
5.0
10
15
—
—
—
—
—
—
—
—
—
125
50
40
160
65
50
200
80
60
250
100
80
300
130
100
350
150
110
ns
* 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.
V
DD
14
C
L
V
SS
7
PULSE
GENERATOR
INPUT
OUTPUT
90%
50%
10%
10%
50%
90%
20 ns 20 ns
t
PHL
t
PLH
t
TLH
t
THL
V
OL
V
OH
0 V
V
DD
INPUT
OUTPUT
INVERTING
* All unused inputs of AND, NAND gates must be connected to V
DD
.
All unused inputs of OR, NOR gates must be connected to V
SS
.
90%
50%
10%
V
OL
V
OH
OUTPUT
NON–INVERTING
t
THL
t
TLH
t
PLH
t
PHL
*
Figure 1. Switching Time Test Circuit and Waveforms