SN74LVC1T45

SINGLEBIT DUALSUPPLY BUS TRANSCEIVER

WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3STATE OUTPUTS

SCES515E − DECEMBER 2003 − REVISED MAY 2004

9

POST OFFICE BOX 655303

power-up considerations

A proper power-up sequence always should be followed to avoid excessive supply current, bus contention,

oscillations, or other anomalies. Take the following precautions to guard against such power-up problems:

1.

Connect ground before any supply voltage is applied.

2.

3.

Table 1

VCCB

VCCA

UNIT

VCCB

0 V

1.8 V

2.5 V

3.3 V

5 V

UNIT

0 V

0

<1

<1

<1

<1

1.8 V

<1

<2

<2

<2

2

2.5 V

<1

<2

<2

<2

<2

µA

3.3 V

<1

<2

<2

<2

<2

µA

5 V

<1

2

<2

<2

<2