Datasheet

 2002-2012 Microchip Technology Inc. DS21418D-page 1
TC4404/TC4405
Features:
• Independently Programmable Rise and Fall
Times
• Low Output Impedance – 7 Typ.
• High Speed t
R
, t
F
– <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
Applications:
• Motor Controls
• Driving Bipolar Transistors
• Driver for Non-overlapping Totem Poles
• Reach-Up/Reach-Down Driver
Device Selection Table
General Description:
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.
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.
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.
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.
Package Type
Part Number Package Temp. Range
TC4404COA 8-Pin SOIC 0°C to +70°C
TC4404CPA 8-Pin PDIP 0°C to +70°C
TC4404EOA 8-Pin SOIC -40°C to +85°C
TC4404EPA 8-Pin PDIP -40°C to +85°C
TC4404MJA 8-Pin CERDIP -55°C to +125°C
TC4405COA 8-Pin SOIC 0°C to +70°C
TC4405CPA 8-Pin PDIP 0°C to +70°C
TC4405EOA 8-Pin SOIC -40°C to +85°C
TC4405EPA 8-Pin PDIP -40°C to +85°C
TC4405MJA 8-Pin CERDIP -55°C to +125°C
18
27
36
45
TC4405
B BOTTOMGND
IN B
IN A
V
DD
B TOP
A BOTTOM
A TOP
18
27
36
45
TC4405
B BOTTOMGND
IN B
IN A
V
DD
B TOP
A BOTTOM
A TOP
18
27
36
45
TC4404
B BOTTOMGND
IN B
IN A
V
DD
B TOP
A BOTTOM
A TOP
18
27
36
45
TC4404
B BOTTOMGND
IN B
IN A
V
DD
B TOP
A BOTTOM
A TOP
8-Pin PDIP/SOIC/CERDIP
1.5A Dual Open-Drain MOSFET Drivers