TC4404 datasheet(2/22 Pages) MICROCHIP

2 / 22 page

TC4404/TC4405

DS20001418E-page 2

 2002-2016 Microchip Technology Inc.

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 VDD), 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.

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.

Functional Block Diagram

Input

GND

Effective

Input

C ≤ 12 pF

300 mV

VDD

Pull-Up

Pull-Down

2 (3)

A (B)

8 (6)

7 (5)

TC4404

Inverting

TC4405

Noninverting

4.7V

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