LC4105V Просмотр технического описания (PDF) - SANYO -> Panasonic

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LC4105V

Level Shifter

SANYO -> Panasonic 

Power Supply Circuits

LC4105V

Keep the impedance of the VSS and VSS1 lines as low as possible. Connect a large electrolytic capacitor across the VDD1

and VSS1 pins and close to the IC. Wherever possible, keep the grounds for the power supply circuits and the signal

circuits separate and connect the two at a single point.

Notes on Power-Supply Voltage Application

This IC has two power supply systems: VDD (VDD1) and VCC, and requires that applications observe the notes provided

here when applying or removing these voltages. In particular, if the VDD (VDD1) system power-supply voltage becomes

higher than the VCC system voltage while the VCC system voltage is not yet established (i.e. is less than VCCmin),

excessive currents may flow and the IC may be destroyed. To prevent destruction of the IC due to this phenomenon,

applications must, basically, follow the sequence described in item 1 below when turning the power supplies on or off.

1. When turning the power on, first apply the VCC voltage (bring this voltage to a value above VCCmin), and then apply

the VDD voltage. When turning the power off, first drop the VDD voltage, and, after VDD is below VCCmin, then drop

the VCC voltage.

Power-supply voltage

VDD,VDD1

VCC

Time

No. 5641-5/6

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