參數(shù)資料
型號： 74AHC244
廠商： NXP Semiconductors N.V.
英文描述： Quad 2-Input Positive-NAND Gates 14-TSSOP -40 to 85
中文描述： 八路緩沖器/線路驅(qū)動器，3態(tài)
文件頁數(shù)： 8/16頁
文件大?。?/td> 80K
代理商： 74AHC244
1999 Sep 28
8
Philips Semiconductors
Product specification
Octal buffer/line driver; 3-state
74AHC244; 74AHCT244
AC CHARACTERISTICS
Type 74AHC244
GND = 0 V; t
r
= t
f
≤
3.0 ns.
Notes
1.
2.
Typical values at V
CC
= 3.3 V.
Typical values at V
CC
= 5.0 V.
SYMBOL
PARAMETER
TEST CONDITIONS
T
amb
(
°
C)
UNIT
WAVEFORMS
C
L
25
40 to +85
40 to +125
MIN.
TYP.
MAX.
MIN.
MAX.
MIN.
MAX.
V
CC
= 3.0 to 3.6 V;
note 1
t
PHL
/t
PLH
propagation delay
nA
n
to nY
n
propagation delay
nOE to nY
n
propagation delay
nOE to nY
n
propagation delay
nA
n
to nY
n
propagation delay
nOE to nY
n
propagation delay
nOE to nY
n
see Figs 4 and 6
15 pF
5.0
8.4
1.0
10.0
1.0
10.5
ns
t
PZL
/t
PZH
see Figs 5 and 6
6.5
10.6
1.0
12.5
1.0
13.5
ns
t
PLZ
/t
PHZ
5.5
9.7
1.0
11.0
1.0
12.5
ns
t
PHL
/t
PLH
see Figs 4 and 6
50 pF
7.0
11.9
1.0
13.5
1.0
15.0
ns
t
PZL
/t
PZH
see Figs 5 and 6
7.5
14.1
1.0
16.0
1.0
18.0
ns
t
PLZ
/t
PHZ
10.0
14.0
1.0
16.0
1.0
17.5
ns
V
CC
= 4.5 to 5.5 V;
note 2
t
PHL
/t
PLH
propagation delay
nA
n
to nY
n
propagation delay
nOE to nY
n
propagation delay
nOE to nY
n
propagation delay
nA
n
to nY
n
propagation delay
nOE to nY
n
propagation delay
nOE to nY
n
see Figs 4 and 6
15 pF
3.4
5.5
1.0
6.5
1.0
7.0
ns
t
PZL
/t
PZH
see Figs 5 and 6
4.0
7.3
1.0
8.5
1.0
9.5
ns
t
PLZ
/t
PHZ
4.8
7.2
1.0
8.5
1.0
9.0
ns
t
PHL
/t
PLH
see Figs 4 and 6
50 pF
5.0
7.5
1.0
8.5
1.0
9.5
ns
t
PZL
/t
PZH
see Figs 5 and 6
5.5
9.3
1.0
10.5
1.0
12.0
ns
t
PLZ
/t
PHZ
7.0
9.2
1.0
10.5
1.0
11.5
ns
相關(guān)PDF資料
PDF描述
74AHCT245 Quadruple 2-Input Positive-AND Gates 14-SSOP -40 to 85
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