U74CB3Q3257

Advance

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

7 of 9

www.unisonic.com.tw

QW-R502-D36.a

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POWER SUPPLY RECOMMENDATIONS

The power supply can be any voltage between the minimum and maximum supply voltage rating listed in the

Absolute Maximum Ratings table.

Each VCC terminal should have a good bypass capacitor to prevent power disturbance. For devices with a single

supply, a 0.1μF bypass capacitor is recommended. If multiple pins are labeled VCC, then a 0.01μF or 0.022μF

capacitoris recommended for each VCC because the VCC pins are tied together internally. For devices with

dual-supply pins operating at different voltages, for example VCC and VDD, a 0.1µF bypass capacitor is recommended

for each supply pin. To reject different frequencies of noise, use multiple bypass capacitors in parallel. Capacitors

with values of 0.1μFand1μF are commonly used in parallel. The bypass capacitor should be installed as close to the

power terminal as possible for best results.

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TYPICAL APPLICATION CIRCUIT

7

DEVICE1

BUS

Controller

1

4

9

8

12

14

11

10

13

6

5

3

2

16

15

DEVICE2

Ron

S

1A

2A

3A

4A

GND

VCC

1B1

1B2

2B1

2B2

3B1

OE

Ron

Ron

Ron

U74CB3Q3257

3B2

4B1

4B2