74HC237D
7
15.
15.
15.
15. Timing Requirements
Timing Requirements
Timing Requirements
Timing Requirements
(Unless otherwise specified, T
(Unless otherwise specified, T
(Unless otherwise specified, T
(Unless otherwise specified, T
a
a
a
a
= -40 to 125
= -40 to 125
= -40 to 125
= -40 to 125
, Input: t
, Input: t
, Input: t
, Input: t
r
r
r
r
= t
= t
= t
= t
f
f
f
f
= 6 ns)
= 6 ns)
= 6 ns)
= 6 ns)
Characteristics
Minimum pulse width
(GL)
Minimum setup time
(A, B, C - GL)
Minimum hold time
(A, B, C - GL)
Symbol
t
w(L)
t
S
t
h
Test Condition
V
CC
(V)
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
Limit
115
23
20
75
15
13
40
8
7
Unit
ns
ns
ns
15.1.
15.1.
15.1.
15.1. AC Characteristics
AC Characteristics
AC Characteristics
AC Characteristics
(Unless otherwise specified, C
(Unless otherwise specified, C
(Unless otherwise specified, C
(Unless otherwise specified, C
L
L
L
L
= 15 pF, V
= 15 pF, V
= 15 pF, V
= 15 pF, V
CC
CC
CC
CC
= 5 V, T
= 5 V, T
= 5 V, T
= 5 V, T
a
a
a
a
= 25
= 25
= 25
= 25
, Input: t
, Input: t
, Input: t
, Input: t
r
r
r
r
= t
= t
= t
= t
f
f
f
f
= 6 ns)
= 6 ns)
= 6 ns)
= 6 ns)
Characteristics
Output transition time
Propagation delay time
(G1 - Y)
Propagation delay time
(G2 - Y)
Propagation delay time
(GL - Y)
Propagation delay time
(A, B, C - Y)
Symbol
t
TLH
,t
THL
t
PLH
,t
PHL
t
PLH
,t
PHL
t
PLH
,t
PHL
t
PLH
,t
PHL
Test Condition
Min
Typ.
4
12
12
17
15
Max
8
24
24
33
31
Unit
ns
ns
ns
ns
ns
15.2.
15.2.
15.2.
15.2. AC Characteristics
AC Characteristics
AC Characteristics
AC Characteristics
(Unless otherwise specified, C
(Unless otherwise specified, C
(Unless otherwise specified, C
(Unless otherwise specified, C
L
L
L
L
= 50pF, T
= 50pF, T
= 50pF, T
= 50pF, T
a
a
a
a
= 25
= 25
= 25
= 25
, Input: t
, Input: t
, Input: t
, Input: t
r
r
r
r
= t
= t
= t
= t
f
f
f
f
= 6 ns)
= 6 ns)
= 6 ns)
= 6 ns)
Characteristics
Output transition time
Propagation delay time
(G1 - Y)
Propagation delay time
(G2 - Y)
Propagation delay time
(GL - Y)
Propagation delay time
(A, B, C - Y)
Input capacitance
Power dissipation capacitance
Symbol
t
TLH
,t
THL
t
PLH
,t
PHL
t
PLH
,t
PHL
t
PLH
,t
PHL
t
PLH
,t
PHL
C
IN
C
PD
Note
(Note 1)
V
CC
(V)
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
Min
Typ.
30
8
7
45
15
13
45
15
13
65
21
18
60
19
16
3
17
Max
75
15
13
140
28
24
140
28
24
190
38
32
180
36
31
Unit
ns
ns
ns
ns
ns
pF
pF
Note 1: C
PD
is defined as the value of the internal equivalent capacitance which is calculated from the operating current
consumption without load. Average operating current can be obtained by the equation.
I
CC(opr)
= C
PD
× V
CC
× f
IN
+ I
CC
2016-08-04
Rev.3.0
©2016 Toshiba Corporation
