参数资料
型号: 74AHCT157
厂商: NXP Semiconductors N.V.
英文描述: Quad 2-input multiplexer(四通道 2输入多路复用器)
中文描述: 四2输入复用器(四通道2输入多路复用器)
文件页数: 9/16页
文件大小: 84K
代理商: 74AHCT157
1999 Sep 24
9
Philips Semiconductors
Product specification
Quad 2-input multiplexer
74AHC157;
74AHCT157
AC CHARACTERISTICS
Type 74AHC157
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
nI
0
to nY; nI
1
to nY
propagation delay
S to nY
propagation delay
E to nY
propagation delay
nI
0
to nY; nI
1
to nY
propagation delay
S to nY
propagation delay
E to nY
see Figs 7 and 8 15 pF
4.4
9.7
1.0
11.5
1.0
12.5
ns
4.8
13.6
1.0
16.0
1.0
17.0
ns
see Figs 6 and 8
5.9
13.2
1.0
15.5
1.0
16.5
ns
see Figs 7 and 8 50 pF
6.3
13.2
1.0
15.0
1.0
16.5
ns
6.8
17.1
1.0
19.5
1.0
21.5
ns
see Figs 6 and 8
8.4
16.7
1.0
19.0
1.0
21.0
ns
V
CC
= 4.5 to 5.5 V;
note 2
t
PHL
/t
PLH
propagation delay
nI
0
to nY; nI
1
to nY
propagation delay
S to nY
propagation delay
E to nY
propagation delay
nI
0
to nY; nI
1
to nY
propagation delay
S to nY
propagation delay
E to nY
see Figs 7 and 8 15 pF
3.2
6.4
1.0
7.5
1.0
8.0
ns
3.6
8.6
1.0
10.0
1.0
11.0
ns
see Figs 6 and 8
4.2
8.1
1.0
9.5
1.0
10.5
ns
see Figs 7 and 8 50 pF
4.6
8.4
1.0
9.5
1.0
10.5
ns
5.2
10.6
1.0
12.0
1.0
13.5
ns
see Figs 6 and 8
6.0
10.1
1.0
11.5
1.0
13.0
ns
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