MC14001B Series
B−SERIES GATE SWITCHING TIMES
SWITCHING CHARACTERISTICS (5) (C = 50 pF, T = 25_C)
L
A
V
DD
Vdc
(6)
Characteristic
Symbol
Min
Typ
Max
Unit
Output Rise Time, All B−Series Gates
t
ns
TLH
t
t
t
= (1.35 ns/pF) C + 33 ns
L
TLH
TLH
TLH
5.0
10
15
−
−
−
100
50
40
200
100
80
= (0.60 ns/pF) C + 20 ns
L
= (0.40 ns/PF) C + 20 ns
L
Output Fall Time, All B−Series Gates
t
ns
ns
THL
t
t
t
= (1.35 ns/pF) C + 33 ns
L
THL
THL
THL
5.0
10
15
−
−
−
100
50
40
200
100
80
= (0.60 ns/pF) C + 20 ns
L
= (0.40 ns/pF) C + 20 ns
L
Propagation Delay Time
t
, t
PLH PHL
MC14001B, MC14011B only
t
t
t
, t
= (0.90 ns/pF) C + 80 ns
= (0.36 ns/pF) C + 32 ns
L
5.0
10
15
−
−
−
125
50
40
250
100
80
PLH PHL
L
, t
PLH PHL
, t
= (0.26 ns/pF) C + 27 ns
PLH PHL
L
All Other 2, 3, and 4 Input Gates
t
t
t
, t
= (0.90 ns/pF) C + 115 ns
= (0.36 ns/pF) C + 47 ns
L
5.0
10
15
−
−
−
160
65
50
300
130
100
PLH PHL
L
, t
PLH PHL
, t
= (0.26 ns/pF) C + 37 ns
PLH PHL
L
8−Input Gates (MC14068B, MC14078B)
t
t
t
, t
= (0.90 ns/pF) C + 155 ns
= (0.36 ns/pF) C + 62 ns
L
5.0
10
15
−
−
−
200
80
60
350
150
110
PLH PHL
L
, t
PLH PHL
, t
= (0.26 ns/pF) C + 47 ns
PLH PHL
L
5. The formulas given are for the typical characteristics only at 25_C.
6. Data labelled “Typ” is not to be used for design purposes but is intended as an indication of the IC’s potential performance.
20 ns
20 ns
14
V
DD
V
DD
90%
50%
10%
INPUT
INPUT
*
0 V
PULSE
OUTPUT
t
t
PLH
GENERATOR
PHL
90%
50%
10%
V
V
OH
C
L
OUTPUT
OL
INVERTING
t
t
TLH
THL
t
t
PHL
PLH
V
V
OH
7
V
SS
OUTPUT
90%
50%
10%
NON−INVERTING
*All unused inputs of AND, NAND gates must be connected to V
.
OL
DD
t
t
THL
TLH
All unused inputs of OR, NOR gates must be connected to V
.
SS
Figure 1. Switching Time Test Circuit and Waveforms
http://onsemi.com
4
ONSEMI [ ONSEMI ]
