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54LVX4245J-QML 数据表(PDF) 5 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部件名 54LVX4245J-QML
功能描述  8-Bit Dual Supply Translating Transceiver with TRI-STATE Outputs
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制造商  NSC [National Semiconductor (TI)]
网页  http://www.national.com
标志 NSC - National Semiconductor (TI)

54LVX4245J-QML 数据表(HTML) 5 Page - National Semiconductor (TI)

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AC Electrical Characteristics
Symbol
Parameters
T
A = −55˚C to +125˚C
T
A = −55˚C to +125˚C
Units
C
L =50 pF
C
L =50 pF
V
CCA =5V (Note 6)
V
CCA =5V (Note 6)
V
CCB = 3.3V (Note 7)
V
CCB = 2.7V
Min
Max
Min
Max
t
PHL
Propagation Delay
1.0
7.5
1.0
8.5
ns
t
PLH
A to B
1.0
7.5
1.0
8.5
t
PHL
Propagation Delay
1.0
8.5
1.0
9.0
ns
t
PLH
B to A
1.0
8.5
1.0
9.0
t
PZL
Output Enable Time
1.0
9.5
1.0
10.0
ns
t
PZH
OE to B
1.0
9.5
1.0
10.0
t
PZL
Output Enable Time
1.0
8.0
1.0
8.0
ns
t
PZH
OE to A
1.0
8.0
1.0
8.0
t
PHZ
Output Disable Time
1.0
7.5
1.0
7.5
ns
t
PLZ
OE to B
1.0
7.5
1.0
7.5
t
PHZ
Output Disable Time
0.5
7.0
0.5
7.0
ns
t
PLZ
OE to A
0.5
7.0
0.5
7.0
t
OSHL
Output to Output
t
OSLH
Skew (Note 8)
1.5
1.5
ns
Data to Output
Note 6: Voltage Range 5.0V is 5.0V ±0.5V.
Note 7: Voltage Range 3.3V is 3.3V ±0.3V.
Note 8: Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The
specification applies to any outputs switching in the same direction, either HIGH to LOW (tOSHL) or LOW to HIGH (tOSLH). Parameter guaranteed by design.
Capacitance
Symbol
Parameter
Max
Units
Conditions
C
IN
Input Capacitance
10
pF
V
CC = Open
C
I/O
Input/Output
12
pF
V
CCA = 5.0V
Capacitance
V
CCB = 3.3V
C
PD
Power Dissipation
50
pF
V
CCA = 5.0V
Capacitance
V
CCB = 3.3V
CPD is measured at 10 MHz
8-Bit Dual Supply Translating Transceiver
The LVX4245 is a dual supply device capable of bidirectional
signal translation. This level shifting ability provides an
efficient interface between low voltage CPU local bus with
memory and a standard bus defined by 5V I/O levels. The
device control inputs can be controlled by either the low
voltage CPU and core logic or a bus arbitrator with 5V I/O
levels.
Manufactured on a sub-micron CMOS process, the LVX4245
is ideal for mixed voltage applications using 3.3V devices
and 5V buses or IC’s.
DS101021-3
www.national.com
5


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