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參數(shù)資料
| 型號(hào)： | CBT3244 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Octal bus switch with Quad Output Enables |
| 中文描述： | 帶四輸出使能的8個(gè)總線開關(guān) |
| 文件頁(yè)數(shù)： | 4/10頁(yè) |
| 文件大?。?/td> | 83K |
| 代理商： | CBT3244 |
Philips Semiconductors
Preliminary specification
CBT3244
Octal bus switch with Quad Output Enables
1998 Dec 08
4
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
LIMITS
UNIT
Min
Max
V
CC
DC supply voltage
4.5
5.5
V
V
IH
High-level input voltage
2.0
V
V
IL
Low-level Input voltage
0.8
V
T
amb
Operating free-air temperature range
–40
+85
°
C
DC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
T
amb
= –40
°
C to +85
°
C
Min
Typ
1
UNIT
Max
V
IK
I
I
I
CC
Input clamp voltage
V
CC
= 4.5V; I
I
= –18mA
V
CC
= 5.5V; V
I
= GND or 5.5V
V
CC
= 5.5V; I
O
= 0, V
I
= V
CC
or GND
V
CC
= 5.5V, one input at 3.4V, other inputs at
V
CC
or GND
V
I
= 3V or 0, OE = V
CC
V
O
= 3V or 0
V
CC
= 4.5V; V
1
= 0V; I
I
= 64mA
V
CC
= 4.5V; V
1
= 0V; I
I
= 30mA
V
CC
= 4.5V; V
1
= 0V; I
I
= 15mA
–1.2
V
Input leakage current
Quiescent supply current
2
±
5
50
μ
A
μ
A
I
CC
Additional supply current per
input pin
2
3.5
mA
C
I
Control pins
3
pF
C
IO(OFF)
Power-off leakage current
6
pF
5
7
r
on3
On-resistance
5
7
10
15
NOTES:
1. All typical values are at V
= 5V, TA = 25 C
2. This is the increase in supply current for each input that is at the specified TTL voltage level rather than V
CC
or GND
3. 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.
AC CHARACTERISTICS
GND = 0V; t
R;
C
L
= 50pF
74CBT3244
SYMBOL
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
T
amb
= –40
°
C to +85
V
CC
= +5.0V
±
0.5V
UNIT
Min
Max
t
pd
Propagation delay
1
A or B
B or A
.25
ns
t
en
Output enable time
to High and Low level
OE
A or B
1.0
8.9
ns
t
dis
Output disable time
from High and Low level
OE
A or B
1.0
7.4
ns
NOTES:
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 of 50 pF, when driven by an ideal voltage source (zero output impedance).
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