74f244b NXP Semiconductors, 74f244b Datasheet - Page 6

• Manufacturer Part Number: 74f244b
• Description: Octal Buffers 3-state
• Manufacturer: NXP Semiconductors

1. |t
2. Skew times are valid only under same test conditions (temperature, V
Philips Semiconductors
AC ELECTRICAL CHARACTERISTICS FOR 74F244
AC ELECTRICAL CHARACTERISTICS FOR 74F244B
NOTES:
1994 Dec 5
SYMBOL
t
t
t
t
t
t
SYMBOL
t
t
t
t
t
t
t
PLH
PHL
PZH
PZL
PHZ
PLZ
PLH
PHL
PZH
PZL
PHZ
PLZ
sk(0)
Octal buffers (3-State)
PN
actual - t
Propagation delay
Ian, Ibn to Yn
Output enable time
to high or low
Output disable time
from high or low
Propagation delay
Ian, Ibn to Yn
Output enable time
to high or low level
Output disable time
from high or low level
Output skew
PM
PARAMETER
actual| for any output compared to any other output where N and M are either LH or HL.
1, 2
PARAMETER
CONDITION
Waveform 1
Waveform 2
Waveform 4
Waveform 2
Waveform 4
TEST
MIN
2.5
2.5
2.0
1.5
1.5
2.0
T
V
CONDITION
amb
Waveform 1
Waveform 2
Waveform 4
Waveform 2
Waveform 4
Waveform 3
C
R
CC
L
L
TEST
= 50pF,
TYP
= 500
= +25 C
= +5.0V
4.0
4.0
4.3
5.0
2.5
2.5
6
CC
, loading, etc.,).
MAX
5.2
5.2
5.7
7.0
5.5
5.5
C
MIN
2.5
2.5
2.0
3.0
1.5
1.5
L
T
= 50pF, R
V
amb
T
CC
MIN
V
2.0
2.0
2.0
2.0
1.0
1.0
amb
A PORT LIMITS
CC
C
R
= +5.0V
= 0 C to +70 C
L
TYP
L
= +5.0V
4.5
4.5
4.0
5.5
2.5
2.5
= +25 C
= 50pF,
= 500
L
= 500
MAX
MAX
6.2
6.5
6.7
8.0
6.0
5.5
10%
5.7
6.0
6.0
7.5
5.5
5.5
1.5
LIMITS
C
74F244/74F244B
T
T
L
V
amb
amb
V
MIN
= 50pF, R
CC
2.0
2.5
2.0
3.0
1.0
1.0
MIN
CC
1.5
2.0
2.0
2.0
1.0
1.0
= +5.0V
= -40 C to +85 C
= 0 C to +70 C
C
R
= +5.0V
L
L
= 50pF,
= 500
Product specification
L
= 500
MAX
MAX
6.2
6.5
6.5
8.0
6.0
5.5
2.0
10%
7.0
7.0
8.0
8.5
6.0
5.5
10%
UNIT
UNIT
ns
ns
ns
ns
ns
ns
ns