TC4404 datasheet(9/22 Pages) MICROCHIP

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DS20001418E-page 9

TC4404/TC4405

4.0

APPLICATIONS INFORMATION

4.1

Circuit Layout Guidelines

Long power supply and ground traces should be

avoided as the added inductance causes unwanted

voltage transients. Power and ground planes should be

used wherever possible.

In addition, it is advisable that low ESR (Equivalent

Series Resistance) bypass capacitors (4.7 µF or 10 µF

tantalum) be placed as close to the driver as possible.

In order to minimize the length of the output trace, the

driver should be physically located as close as possible

to the device it is driving.

FIGURE 4-1:

Switching Time Test Circuit.

4.2

Typical Applications

FIGURE 4-2:

Zero Crossover Current

Totem-Pole Switch.

FIGURE 4-3:

Driving Bipolar Transistors.

CL = 1000 pF

+5V

10%

90%

10%

90%

10%

90%

18V

90%

10%

90%

+5V

18V

90%

28.7

0.1µF

4.7µF

Inverting Driver

Noninverting Driver

Input

VDD = 18V

Input

Output

tD1

tD2

Input: 100 kHz,

square wave,

tRISE = tFALL  10 ns

Output

Input

Output

tD1

tD2

VDD

(4.5V - 18V)

From TTL

GND

VOUT

TC4404

GND

TC4405

VDD

(4.5V - 18V)

From TTL

RIB

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