UNTB0102

Advance

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

2 of 16

www.unisonic.com.tw

QW-R140-031.a



MARKING



PIN CONFIGURATION



PIN DESCRIPTION

PIN NO.

PIN NAME

I/O

DESCRIPTION

1

B2

I/O

Input/output B2. Referenced to VCCB

2

GND

Ground

3

VCCA

A-Port supply voltage 1.2V ≤ VCCA ≤ 3.6V and VCCA ≤ VCCB.

4

A2

I/O

Input/output A2. Referenced to VCCA

5

A1

I/O

Input/output A1. Referenced to VCCA

6

OE

I

3-state output-mode enable. Pull OE low to place all outputs in 3-state

mode. Referenced to VCCA

7

VCCB

B-Port supply voltage 1.65V ≤ VCCB ≤ 5.5V

8

B1

I/O

Input/output B1. Referenced to VCCB

Note: I=Input, O=Output, I/O=Input and Output.



FUNCTION TABLE

SUPPLY VOLTAGE

INPUTS

INPUTS/OUTPUT

VCCA

VCCB

OE

An

Bn

1.2V ~ VCCB

1.65V ~ 5.5V

L

Z

Z

1.2V ~ VCCB

1.65V ~ 5.5V

H

Input or Output

Output or Input

GND (Note 2)

GND (Note 2)

X

Z

Z

Notes: 1. H = High voltage level；L = Low voltage level；Z : High impedance OFF-state；X = Don’t care.

2. When either VCCA or VCCB is at GND level, the device goes into Power-down mode.