Datasheet

TC4404/TC4405
DS21418D-page 6  2002-2012 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 capac-
itors (4.7 F or 10 F 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 Circuit
3.2 Typical Applications
FIGURE 3-2: Zero Crossover Current
Totem-Pole Switch
FIGURE 3-3: Driving Bipolar Transistors
C
L
= 1000 pF
+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 μF4.7 μF
Inverting Driver
Noninverting Driver
Input
V
DD
= 18V
Input
Output
t
D1
t
F
t
R
t
D2
Input: 100 kHz,
square wave,
t
RISE
= t
FALL
≤ 10 nsec
Output
Input
Output
t
D1
t
F
t
R
t
D2
R
T
R
T
V
DD
(4.5V - 18V)
From TTL
GND
V
OUT
TC4404
GND
TC4405
R
IB
V
DD
(4.5V - 18V)
From TTL
R
IB