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| 型號： | CBT3257A |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Quad 1-of-2 multiplexer/demultiplexer |
| 中文描述： | 四2選1多路復(fù)用解復(fù)用器 |
| 文件頁數(shù)： | 5/16頁 |
| 文件大?。?/td> | 89K |
| 代理商： | CBT3257A |
9397 750 12921
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 01 — 27 October 2005
5 of 16
Philips Semiconductors
CBT3257A
Quad 1-of-2 multiplexer/demultiplexer
9.
Static characteristics
[1]
All typical values are at V
CC
= 5 V; T
amb
= 25
°
C.
This is the increase in supply current for each input that is at the specified TTL voltage level rather than V
CC
or GND.
Measured by the voltage drop between the A and the B terminals at the indicated current through the switch. ON-state resistance is
determined by the lowest voltage of the two (A or B) terminals.
[2]
[3]
10. Dynamic characteristics
[1]
This parameter is warranted but not production tested. The propagation delay is based on the RC time constant of the typical ON-state
resistance of the switch and a load capacitance, when driven by an ideal voltage source (zero output impedance).
[2]
Output enable time to HIGH and LOW level.
[3]
Output disable time from HIGH and LOW level.
Table 6:
T
amb
=
40
°
C to +85
°
C
Symbol
Parameter
V
IK
input clamping voltage
V
pass
pass voltage
I
LI
input leakage current
I
CC
quiescent supply current
Static characteristics
Conditions
V
CC
= 4.5 V; I
I
=
18 mA
V
I
= V
CC
= 5.0 V; I
O
=
100
μ
A
V
CC
= 5.5 V; V
I
= GND or 5.5 V
V
CC
= 5.5 V; I
O
= 0 mA;
V
I
= V
CC
or GND
per input; V
CC
= 5.5 V; one input at
3.4 V, other inputs at V
CC
or GND
V
I
= 3 V or 0 V
A port; V
O
= 3 V or 0 V; OE = V
CC
B port; V
O
= 3 V or 0 V; OE = V
CC
V
CC
= 4.5 V
V
I
= 0 V; I
I
= 64 mA
V
I
= 0 V; I
I
= 30 mA
V
I
= 2.4 V; I
I
= 15 mA
Min
-
3.4
-
-
Typ
[1]
-
3.6
-
-
Max
1.2
3.9
±
1
3
Unit
V
V
μ
A
μ
A
I
CC
additional quiescent supply
current
input capacitance (control pins)
off-state input/output capacitance
[2]
-
-
2.5
mA
C
i
C
io(off)
-
-
-
3.3
9.9
6.4
-
-
-
pF
pF
pF
R
on
ON-state resistance
[3]
-
-
-
5
5
10
7
7
15
Table 7:
T
amb
=
40
°
C to +85
°
C; V
CC
= 5.0 V
±
0.5 V; C
L
= 50 pF; unless otherwise specified.
Symbol
Parameter
Conditions
t
PD
propagation delay
from nA input to nBn output, or
from nBn input to nA output
from S input to nA output
t
en
enable time
from OE input to nA or nBn output
from S input to nBn output
t
dis
disable time
from OE input to nA or nBn output
from S input to nBn output
Dynamic characteristics
Min
Typ
-
Max
0.25
Unit
ns
[1]
-
[1]
1.6
-
-
-
-
-
5.0
5.1
5.2
5.5
5.0
ns
ns
ns
ns
ns
[2]
1.8
[2]
1.6
[3]
2.2
[3]
1.0
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