參數(shù)資料
型號: 74LV240N
廠商: NXP SEMICONDUCTORS
元件分類: 通用總線功能
英文描述: Octal buffer/line driver; inverting 3-State
中文描述: LV/LV-A/LVX/H SERIES, DUAL 4-BIT DRIVER, INVERTED OUTPUT, PDIP20
文件頁數(shù): 6/12頁
文件大?。?/td> 115K
代理商: 74LV240N
Philips Semiconductors
Product specification
74LV240
Octal buffer/line driver; inverting (3-State)
1998 May 20
6
AC CHARACTERISTICS
GND = 0V; t
r
= t
f
2.5ns; C
L
= 50pF; R
L
= 1K
CONDITION
LIMITS
SYMBOL
PARAMETER
WAVEFORM
–40 to +85
°
C
TYP
1
–40 to +125
°
C
MIN
UNIT
V
CC
(V)
1.2
MIN
MAX
MAX
55
Propagation delay
Pro agation delay
1A
to 1Y
n
;
2A to 2Y
n
2.0
19
24
31
t
PHL/
t
PLH
Figures 1
2.7
14
18
23
ns
3.0 to 3.6
10
2
14
18
4.5 to 5.5
12
15
1.2
70
3-State output enable time
3-State out ut enable time
1OE to 1Y
n
;
2OE to 2Y
n
2.0
24
32
41
t
PZH/
t
PZL
Figures 2
2.7
18
24
30
ns
3.0 to 3.6
13
2
19
24
4.5 to 5.5
16
20
1.2
65
3-State output disable time
3-State out ut disable time
1OE to 1Y
n
;
2OE to 2Y
n
2.0
24
29
36
t
PHZ/
t
PLZ
Figures 2
2.7
18
22
27
ns
3.0 to 3.6
14
2
18
22
4.5 to 5.5
15
18
NOTES:
1. Unless otherwise stated, all typical values are measured at T
amb
= 25
°
C
2. Typical values are measured at V
CC
= 3.3 V.
AC WAVEFORMS
V
M
= 1.5V at V
CC
2.7V and
3.6V;
V
M
= 0.5V
×
V
CC
at V
CC
<
2.7V and
4.5V.
V
OL
and V
OH
are the typical output voltage drop that occur with the
output load.
V
X
= V
OL
+ 0.3V at V
CC
2.7V and
3.6V
V
X
= V
OL
+ 0.1V
×
V
CC
at V
CC
<
2.7V and 4.5V
V
Y
= V
OH
– 0.3V at V
CC
2.7V and
3.6V
V
Y
= V
OH
– 0.1
×
V
CC
at V
CC
<
2.7V and
4.5V
SV00612
V
M
1A
n
, 2A
n
INPUT
1Y
n
, 2Y
n
OUTPUT
V
M
t
PLH
t
PHL
GND
V
OL
V
I
V
OH
Figure 1. Input (1A
n
, 2A
) to output (1Y
n
, 2Y
n
)
propagation delays.
SV00613
outputs
outputs
enabled
outputs
t
PHZ
t
PZH
t
PZL
t
PLZ
Q
OUTPUT
HIGH-to-OFF
Q
OUTPUT
LOW-to-OFF
V
M
V
M
nOE INPUT
V
X
V
OL
V
OH
V
Y
GND
GND
V
CC
V
I
V
M
Figure 2. 3-State enable and disable times.
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