TC4404/TC4405

DS21418B-page 6

 2002 Microchip Technology Inc.

3.0

APPLICATIONS INFORMATION

3.1

Circuit Layout Guidelines

Avoid long power supply and ground traces (added

inductance causes unwanted voltage transients). Use

power and ground planes wherever possible. In

addition, it is advisable that low ESR bypass capacitors

(4.7

µF or 10µF tantalum) be placed as close to the

driver as possible. The driver should be physically

located as close to the device it is driving as possible to

minimize the length of the output trace.

FIGURE 3-1:

SWITCHING TIME TEST CIRCUITS

3.2

Typical Applications

FIGURE 3-2:

ZERO CROSSOVER

CURRENT TOTEM-POLE

SWITCH

FIGURE 3-3:

DRIVING BIPOLAR

TRANSISTORS

+5V

10%

90%

10%

90%

10%

90%

18V

0V

0V

90%

10%

10%

10%

90%

+5V

18V

0V

0V

90%

4

2

8,7

1

1

2

0.1

µF

4.7

µF

Inverting Driver

Noninverting Driver

Input

Input

Output

Input: 100kHz,

square wave,

Output

Input

Output

(4.5V - 18V)

From TTL

GND

TC4404

GND

TC4405

(4.5V - 18V)

From TTL