TC4404_13 Datasheet, PDF (2/18 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 that their
device sources are connected to (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 may be paralleled for greater current carrying
capacity.
Functional Block Diagram
These devices are built to operate in the most demand-
ing 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 1/2 amp of reverse current (of either
polarity) being forced back into their outputs. All
terminals are fully protected against up to 2 kV 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)
DS21418D-page 2
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