SN74AVC2T45-Q1 Datasheet, PDF (9/21 Pages) Texas Instruments – DUAL-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS

SN74AVC2T45-Q1
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Power-Up Considerations
SCES813 – JUNE 2010
A proper power-up sequence always should be followed to avoid excessive supply current, bus contention,
oscillations, or other anomalies. To guard against such power-up problems, take the following precautions:
1. Connect ground before any supply voltage is applied.
2. Power up V_CCA.
3. V_CCB can be ramped up along with or after V_CCA.
Table 1. Typical Total Static Power Consumption (I_CCA + I_CCB)
V_CCB
V_CCA
0V
1.2 V
1.5 V
1.8 V
2.5 V
3.3 V
0V
0
<0.5
<0.5
<0.5
<0.5
<0.5
1.2 V
<0.5
<1
<1
<1
<1
1
1.5 V
<0.5
<1
<1
<1
<1
1
1.8 V
<0.5
<1
<1
<1
<1
<1
2.5 V
<0.5
1
<1
<1
<1
<1
3.3 V
<0.5
1
<1
<1
<1
<1
UNIT
mA
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