hef4044b NXP Semiconductors, hef4044b Datasheet - Page 4

• Manufacturer Part Number: hef4044b
• Description: Quadruple R/s Latch With 3-state Outputs
• Manufacturer: NXP Semiconductors

Philips Semiconductors
AC CHARACTERISTICS
V
January 1995
Propagation delays
Output transition
3-state propagation delays
Output disable times
Output enable times
Minimum S
Minimum R
SS
Quadruple R/S latch with 3-state outputs
R
S
times
EO
EO
pulse width; LOW
pulse width; LOW
= 0 V; T
n
n
HIGH to LOW
LOW to HIGH
HIGH to LOW
LOW to HIGH
HIGH
LOW
HIGH
LOW
O
O
O
O
n
n
n
n
n
amb
n
= 25 C; C
L
= 50 pF; input transition times
V
10
15
10
15
10
15
10
15
10
15
10
15
10
15
10
15
10
15
10
15
V
DD
5
5
5
5
5
5
5
5
5
5
t
t
t
t
t
t
t
t
t
t
SYMBOL MIN. TYP. MAX.
PHL
PLH
THL
TLH
PHZ
PLZ
PZH
PZL
WSL
WRL
30
20
16
30
20
16
4
20 ns
90
40
30
90
40
30
60
30
20
60
30
20
50
30
25
30
25
20
50
25
20
50
25
20
15
10
15
10
8
8
185 ns
180 ns
120 ns
120 ns
100 ns
100 ns
80 ns
60 ns
80 ns
60 ns
60 ns
40 ns
60 ns
40 ns
60 ns
50 ns
60 ns
45 ns
40 ns
50 ns
40 ns
95 ns
45 ns
35 ns
ns
ns
ns
ns
ns
ns
see also waveforms
Fig.5
63 ns
29 ns
22 ns
63 ns
29 ns
22 ns
10 ns
10 ns
TYPICAL EXTRAPOLATION
9 ns
6 ns
9 ns
6 ns
FORMULA
(0,55 ns/pF) C
(0,23 ns/pF) C
(0,16 ns/pF) C
(0,55 ns/pF) C
(0,23 ns/pF) C
(0,16 ns/pF) C
(1,0 ns/pF) C
(0,42 ns/pF) C
(0,28 ns/pF) C
(1,0 ns/pF) C
(0,42 ns/pF) C
(0,28 ns/pF) C
Product specification
HEF4044B
MSI
L
L
L
L
L
L
L
L
L
L
L
L