SN74LVC2T45 datasheet(4/25 Pages) TI

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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

VCCI

VCCO

MIN

MAX

UNIT

VCCA

1.65

5.5

Supply voltage

VCCB

1.65

5.5

1.65 V to 1.95 V

VCCI × 0.65

2.3 V to 2.7 V

1.7

High-level

VIH

Data inputs(4)

input voltage

3 V to 3.6 V

4.5 V to 5.5 V

VCCI × 0.7

1.65 V to 1.95 V

VCCI × 0.35

2.3 V to 2.7 V

0.7

Low-level

VIL

Data inputs(4)

input voltage

3 V to 3.6 V

0.8

4.5 V to 5.5 V

VCCI × 0.3

1.65 V to 1.95 V

VCCA × 0.65

2.3 V to 2.7 V

1.7

High-level

DIR

VIH

input voltage

(referenced to VCCA)(5)

3 V to 3.6 V

4.5 V to 5.5 V

VCCA × 0.7

1.65 V to 1.95 V

VCCA × 0.35

2.3 V to 2.7 V

0.7

Low-level

DIR

VIL

input voltage

(referenced to VCCA)(5)

3 V to 3.6 V

0.8

4.5 V to 5.5 V

VCCA × 0.3

Input voltage

5.5

Output voltage

VCCO

1.65 V to 1.95 V

–4

2.3 V to 2.7 V

–8

IOH

High-level output current

3 V to 3.6 V

–24

4.5 V to 5.5 V

–32

1.65 V to 1.95 V

2.3 V to 2.7 V

IOL

Low-level output current

3 V to 3.6 V

4.5 V to 5.5 V

1.65 V to 1.95 V

2.3 V to 2.7 V

Data inputs

Input transition

∆t/∆v

3 V to 3.6 V

ns/V

rise or fall rate

4.5 V to 5.5 V

Control input

1.65 V to 5.5 V

Operating free-air temperature

–40

°C

(1)

VCCI is the VCC associated with the input port.

(2)

VCCO is the VCC associated with the output port.

(3)

All unused data inputs of the device must be held at VCCI 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 VCCI values not specified in the data sheet, VIH min = VCCI × 0.7 V, VIL max = VCCI × 0.3 V.

(5)

For VCCI values not specified in the data sheet, VIH min = VCCA × 0.7 V, VIL max = VCCA × 0.3 V.

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