74lv245db NXP Semiconductors, 74lv245db Datasheet - Page 6

• Manufacturer Part Number: 74lv245db
• Description: Octal Bus Transceiver 3-state
• Manufacturer: NXP Semiconductors

1. Unless otherwise stated, all typical values are measured at T
2. Typical values are measured at V
3. Typical values are measured at V
Philips Semiconductors
AC CHARACTERISTICS
GND = 0V; t
NOTES:
AC WAVEFORMS
V
V
V
V
V
V
V
1998 Apr 20
SYMBOL
M
M
OL
X
X
Y
Y
t
t
t
(B
PHL/
PZH/
PHZ/
Octal bus transceiver (3-State)
= V
= V
= V
= V
= 1.5 V at V
= 0.5 V
and V
n
, A
t
t
t
OL
OL
OH
OH
PLH
PZL
PLZ
A
B
n
+ 0.3 V at V
+ 0.1 V
n
n
) propagation delays and the output transition times.
OH
– 0.3 V at V
– 0.1
, B
, A
r
n
n
V
= t
are the typical output voltage drop that occur with the output load.
INPUT
OUTPUT
CC
Propagation delay
Pro agation delay
A
B t A
B
3-State output enable time
3-State out ut enable time
OE to A
OE t B
OE to B
3-State output disable time
OE t A
OE to A
OE to B
OE to B
CC
f
n
n
Figure 1. Input (A
t
PHL
at V
V
to B
to A
CC
2.5ns; C
CC
2.7 V and
CC
at V
CC
PARAMETER
n
n
CC
at V
n
n
n
n
n
;
;
;
CC
V
2.7 V and
2.7 V and
CC
M
2.7V and
L
= 50pF; R
V
2.7 V and
M
2.7 V and
3.6 V
n
CC
CC
, B
3.6 V
4.5 V
3.6 V
L
n
= 3.3 V.
= 5.0 V.
= 1K
) to output
4.5 V
4.5 V
WAVEFORM
Figures 1
Figures 2
Figures 2
SV00627
t
PLH
amb
CONDITION
CONDITION
= 25 C
3.0 to 3.6
4.5 to 5.5
3.0 to 3.6
4.5 to 5.5
3.0 to 3.6
4.5 to 5.5
V
6
CC
1.2
2.0
2.7
1.2
2.0
2.7
1.2
2.0
2.7
(V)
HIGH-to-OFF
OFF-to-HIGH
LOW-to-OFF
OFF-to-LOW
OE INPUT
OUTPUT
OUTPUT
Figure 2. 3-State enable and disable times.
V
V
GND
GND
MIN
OH
CC
V
OL
V
I
–40 to +85 C
enabled
outputs
TYP
11.5
8.5
10
14
45
15
11
9
8
55
19
14
65
24
18
V
t
M
PLZ
2
3
t
PHZ
2
2
3
3
1
LIMITS
V X
MAX
V
28
28
19
16
31
23
18
14
32
24
20
16
11
Y
disabled
outputs
–40 to +125 C
MIN
t
PZL
t
PZH
Product specification
74LV245
MAX
34
24
20
14
39
29
23
18
39
29
24
19
V
M
V
M
SV00628
outputs
enabled
UNIT
ns
ns
ns