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: 10/16页
文件大小: 84K
代理商: 74AHCT157
1999 Sep 24
10
Philips Semiconductors
Product specification
Quad 2-input multiplexer
74AHC157;
74AHCT157
Type 74AHCT157
GND = 0 V; t
r
= t
f
3.0 ns.
Note
1.
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
= 4.5 to 5.5 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
3.2
6.4
1.0
7.5
1.0
8.0
ns
3.7
8.6
1.0
10.0
1.0
11.0
ns
see Figs 6 and 8
4.7
8.1
1.0
9.5
1.0
10.5
ns
see Figs 7 and 8 50 pF
4.6
8.7
1.0
9.8
1.0
11.0
ns
5.2
10.4
1.0
12.0
1.0
13.0
ns
see Figs 6 and 8
6.7
10.6
1.0
12.0
1.0
13.5
ns
AC WAVEFORMS
Fig.6
The enable input (E) to output (nY)
propagation delays.
FAMILY
V
I
INPUT
REQUIREMENTS
V
M(1)
INPUT
V
M(1)
OUTPUT
AHC
AHCT
GND to V
CC
GND to 3.0 V
50% V
CC
1.5 V
50% V
CC
50% V
CC
handbook, halfpage
MNA485
tPHL
tPLH
VM
(1)
VM
(1)
E INPUT
nY OUTPUT
GND
VCC
VOH
VOL
Fig.7
The data inputs (nI
0
, nI
1
) and common data
select input (S) to output (nY) propagation
delays.
FAMILY
V
I
INPUT
REQUIREMENTS
V
M(1)
INPUT
V
M(1)
OUTPUT
AHC
AHCT
GND to V
CC
GND to 3.0 V
50% V
CC
1.5 V
50% V
CC
50% V
CC
handbook, halfpage
nI0, nI1, S
INPUT
MNA486
tPHL
tPLH
VM
(1)
VM
(1)
nY OUTPUT
GND
VI
VOH
VOL
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