TC4404_16 Datasheet, PDF (2/22 Pages) Microchip Technology – 1.5A Dual Open-Drain MOSFET Drivers

TC4404/TC4405
Because neither drain in an output is dependent on the
other, these devices can also be used as open-drain
buffer/drivers where both drains are available in one
device, thus minimizing chip count. Unused open
drains should be returned to the supply rail so that their
device sources are connected (pull-downs to ground,
pull-ups to V_DD), to prevent static damage. In addition,
in situations where timing resistors or other means of
limiting crossover currents are used, like drains from
drivers A and B, they may be paralleled for greater
current carrying capacity.
Functional Block Diagram
These devices are built to operate in the most
demanding electrical environments. 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
their ground pin; and they can accept, without damage
or logic upset, up to 0.5A of reverse current (of either
polarity) being forced back into their outputs. All
terminals are fully protected against up to 2 kV (HBM)
of electrostatic discharge.
1
V_DD
2 (3)
Input
4.7V
300 mV
TC4404
Inverting
TC4405
Noninverting
8 (6)
Pull-Up
7 (5)
Pull-Down
GND ⁴
Effective
Input
C ≤ 12 pF
A (B)
DS20001418E-page 2
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