TC4404/TC4405
1.5A Dual Open-Drain MOSFET Drivers
Features:
General Description:
• Independently Programmable Rise and Fall
Times
The TC4404/TC4405 are CMOS buffer-drivers
constructed with complementary MOS outputs, where
the drains of the totem-pole output have been left
separated so that individual connections can be made
to the pull-up and pull-down sections of the output. This
allows the insertion of drain-current-limiting resistors in
the pull-up and/or pull-down sections, allowing the user
to define the rates of rise and fall for a capacitive load;
or a reduced output swing, if driving a resistive load, or
to limit base current, when driving a bipolar transistor.
Minimum rise and fall times, with no resistors, will be
less than 30 nsec for a 1000 pF load.
• Low Output Impedance – 7Ω Typ.
• High Speed tR, tF – <30 nsec with 1000 pF Load
• Short Delay Times – <30 nsec
• Wide Operating Range:
- 4.5V to 18V
• Latch-Up Protected: Will Withstand > 500 mA
Reverse Current (Either Polarity)
• Input Withstands Negative Swings Up to -5V
For driving MOSFETs in motor-control applications,
where slow-ON/fast-OFF operation is desired, these
devices are superior to the previously used technique
of adding a diode-resistor combination between the
driver output and the MOSFET, because they allow
accurate control of turn-ON, while maintaining fast turn-
OFF and maximum noise immunity for an OFF device.
Applications:
• Motor Controls
• Driving Bipolar Transistors
• Driver for Non-overlapping Totem Poles
• Reach-Up/Reach-Down Driver
When used to drive bipolar transistors, these drivers
maintain the high speeds common to other Microchip
drivers. They allow insertion of a base current-limiting
resistor, while providing a separate half-output for fast
turn-OFF. By proper positioning of the resistor, either
npn or pnp transistors can be driven.
Device Selection Table
Part Number
Package
Temp. Range
TC4404COA
TC4404CPA
TC4404EOA
TC4404EPA
TC4404MJA
TC4405COA
TC4405CPA
TC4405EOA
TC4405EPA
TC4405MJA
8-Pin SOIC
8-Pin PDIP
8-Pin SOIC
8-Pin PDIP
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
For driving many loads in low-power regimes, these
drivers, because they eliminate shoot-through currents
in the output stage, require significantly less power at
higher frequencies, and can be helpful in meeting
low-power budgets.
8-Pin CERDIP -55°C to +125°C
8-Pin SOIC
8-Pin PDIP
8-Pin SOIC
8-Pin PDIP
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
8-Pin CERDIP -55°C to +125°C
Package Type
8-Pin PDIP/SOIC/CERDIP
V
V
DD
DD
1
2
3
4
8
7
6
5
A TOP
1
2
3
4
8
7
6
5
A TOP
IN A
IN B
A BOTTOM
B TOP
IN A
IN B
A BOTTOM
B TOP
TC4404
TC4405
TC4404
TC4405
GND
B BOTTOM
GND
B BOTTOM
V
V
DD
DD
1
8
A TOP
1
2
3
4
8
7
6
5
A TOP
IN A
IN B
2
3
4
7
6
5
A BOTTOM
B TOP
IN A
IN B
A BOTTOM
B TOP
GND
B BOTTOM
GND
B BOTTOM
© 2006 Microchip Technology Inc.
DS21418C-page 1