TC4426
TC4427
TC4428
1.5A DUAL HIGH-SPEED POWER MOSFET DRIVERS
GENERAL DESCRIPTION
FEATURES
The TC4426/4427/4428 are improved versions of the
earlier TC426/427/428 family of buffer/drivers (with which
they are pin compatible). They will not latch up under any
conditions within their power and voltage ratings. They are
not subject to damage when up to 5V of noise spiking (of
either polarity) occurs on the ground pin. They can accept,
without damage or logic upset, up to 500 mA of reverse
current (of either polarity) being forced back into their
outputs. All terminals are fully protected against up to 4kV of
electrostatic discharge.
As MOSFET drivers, the TC4426/4427/4428 can easily
switch 1000pF gate capacitances in under 30nsec, and
provide low enough impedances in both the ON and OFF
states to ensure the MOSFET's intended state will not be
affected, even by large transients.
■ High Peak Output Current ............................... 1.5A
■ Wide Operating Range ..........................4.5V to 18V
■ High Capacitive Load
Drive Capability .......................... 1000pF in 25nsec
■ Short Delay Time .............................. < 40nsec Typ.
■ Consistent Delay Times With Changes in
Supply Voltage
■ Low Supply Current
— With Logic “1” Input .................................... 4mA
— With Logic “0” Input ................................. 400µA
■ Low Output Impedance ....................................... 7Ω
■ Latch-Up Protected ............. Will Withstand >0.5A
Reverse Current................................. Down to – 5V
■ Input Will Withstand Negative Inputs
■ ESD Protected.....................................................4kV
■ Pinout Same as TC426/TC427/TC428
Other compatible drivers are the TC4426A/27A/28A.
These drivers have matched input to output leading edge
and falling edge delays, tD1 and tD2, for processing short
duration pulses in the 25 nsec range. They are pin compat-
ible with the TC4426/27/28.
ORDERING INFORMATION
Temperature
Part No.
Package
Range
FUNCTIONAL BLOCK DIAGRAM
TC4426COA
TC4426CPA
TC4426EOA
TC4426EPA
TC4426MJA
8-Pin SOIC
0°C to +70°C
0°C to +70°C
V
DD
8-Pin Plastic DIP
8-Pin SOIC
INVERTING
OUTPUTS
– 40°C to +85°C
– 40°C to +85°C
– 55°C to +125°C
8-Pin Plastic DIP
8-Pin CerDIP
300 mV
OUTPUT
TC4427COA
TC4427CPA
TC4427EOA
TC4427EPA
TC4427MJA
8-Pin SOIC
0°C to +70°C
0°C to +70°C
NONINVERTING
OUTPUTS
8-Pin Plastic DIP
8-Pin SOIC
– 40°C to +85°C
– 40°C to +85°C
– 55°C to +125°C
INPUT
GND
8-Pin Plastic DIP
8-Pin CerDIP
4.7V
TC4426/TC4427/TC4428
TC4428COA
TC4428CPA
TC4428EOA
TC4428EPA
TC4428MJA
8-Pin SOIC
0°C to +70°C
0°C to +70°C
EFFECTIVE INPUT
C = 12 pF
8-Pin Plastic DIP
8-Pin SOIC
NOTES: 1.TC4426 has 2 inverting drivers; TC4427 has 2 noninverting drivers.
2. TC4428 has one inverting and one noninverting driver.
3. Ground any unused driver input.
– 40°C to +85°C
– 40°C to +85°C
– 55°C to +125°C
8-Pin Plastic DIP
8-Pin CerDIP
TC4426/7/8-8 10/21/96
© 2001 Microchip Technology Inc. DS21422A
MICROCHIP [ MICROCHIP ]
