TC4426M_13 datasheet(9/18 Pages) MICROCHIP

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DS21938B-page 9

TC4426M/TC4427M/TC4428M

3.0

PIN DESCRIPTIONS

The descriptions of the pins are listed in Table 3-1.

TABLE 3-1:

PIN FUNCTION TABLE

3.1

Inputs A & B (IN A and IN B)

MOSFET drivers IN A & B are high-impedance, TTL/

CMOS-compatible inputs. These inputs also have

300 mV of hysteresis between the high and low

thresholds that prevents output glitching even when the

rise and fall time of the input signal is very slow.

3.2

Ground (GND)

GND is the device return pin. The ground pin(s) should

have a low-impedance connection to the bias supply

source return. High peak currents will flow out of the

ground pin(s) when the capacitive load is being

discharged.

3.3

Output A & B (OUT A and OUT B)

MOSFET drivers OUT A & B are low-impedance,

CMOS push-pull style outputs. The pull-down and pull-

up devices are of equal strength, making the rise and

fall times equivalent.

3.4

Supply Input (VDD)

The VDD input is the bias supply for the MOSFET driver

and is rated for 4.5V to 18V with respect to the ground

pin. The VDD input should be bypassed with local

ceramic capacitors. The value of these capacitors

should be chosen based on the capacitive load that is

being driven. A value of 1.0 µF is suggested.

8-Pin

CERDIP

Symbol

Description

No connection

IN A

Input A

GND

Ground

IN B

Input B

OUT B

Output B

6VDD

Supply input

OUT A

Output A

No connection

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