Datasheet

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Recommended Operating Conditions
(1) (2) (3)
SN74LVC2T45
DUAL-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
SCES516I – DECEMBER 2003 – REVISED MARCH 2007
V
CCI
V
CCO
MIN MAX UNIT
V
CCA
1.65 5.5
Supply voltage V
V
CCB
1.65 5.5
1.65 V to 1.95 V V
CCI
× 0.65
2.3 V to 2.7 V 1.7
High-level
V
IH
Data inputs
(4)
V
input voltage
3 V to 3.6 V 2
4.5 V to 5.5 V V
CCI
× 0.7
1.65 V to 1.95 V V
CCI
× 0.35
2.3 V to 2.7 V 0.7
Low-level
V
IL
Data inputs
(4)
V
input voltage
3 V to 3.6 V 0.8
4.5 V to 5.5 V V
CCI
× 0.3
1.65 V to 1.95 V V
CCA
× 0.65
2.3 V to 2.7 V 1.7
High-level DIR
V
IH
V
input voltage (referenced to V
CCA
)
(5)
3 V to 3.6 V 2
4.5 V to 5.5 V V
CCA
× 0.7
1.65 V to 1.95 V V
CCA
× 0.35
2.3 V to 2.7 V 0.7
Low-level DIR
V
IL
V
input voltage (referenced to V
CCA
)
(5)
3 V to 3.6 V 0.8
4.5 V to 5.5 V V
CCA
× 0.3
V
I
Input voltage 0 5.5 V
V
O
Output voltage 0 V
CCO
V
1.65 V to 1.95 V –4
2.3 V to 2.7 V –8
I
OH
High-level output current mA
3 V to 3.6 V –24
4.5 V to 5.5 V –32
1.65 V to 1.95 V 4
2.3 V to 2.7 V 8
I
OL
Low-level output current mA
3 V to 3.6 V 24
4.5 V to 5.5 V 32
1.65 V to 1.95 V 20
2.3 V to 2.7 V 20
Data inputs
Input transition
∆ t/ ∆ v 3 V to 3.6 V 10 ns/V
rise or fall rate
4.5 V to 5.5 V 5
Control input 1.65 V to 5.5 V 5
T
A
Operating free-air temperature –40 85 ° C
(1) V
CCI
is the V
CC
associated with the input port.
(2) V
CCO
is the V
CC
associated with the output port.
(3) All unused data inputs of the device must be held at V
CCI
or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
(4) For V
CCI
values not specified in the data sheet, V
IH
min = V
CCI
× 0.7 V, V
IL
max = V
CCI
× 0.3 V.
(5) For V
CCI
values not specified in the data sheet, V
IH
min = V
CCA
× 0.7 V, V
IL
max = V
CCA
× 0.3 V.
4
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