UT3221EG-R16-T datasheet(5/10 Pages) UTC

5 / 10 page

UT3221/E

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

5 of 10

www.unisonic.com.tw

QW-R103-128.C



ELECTRICAL CHARACTERISTICS (Cont.)

(VCC=+3.0V~+5.5V, C1~C4=0.1µF (Note 2), TA = TMIN to TMAX, Unless Otherwise Specified)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP MAX UNIT

High

tINVH

1.0

µs

Receiver Positive or

Negative Threshold to

INVALID

Low

tINVL

Fig.2

µs

RECEIVER INPUT

Input Voltage Range

VRR

-25

VCC=3.3V

0.6

1.2

Input Threshold Low

VRINL

TA=25°C

VCC=5.0V

0.8

1.5

VCC=3.3V

1.5

2.4

Input Threshold High

VRINH

TA=25°C

VCC=5.0V

1.8

2.4

Input Hysteresis

VRINHYS

0.5

Input Resistance

VRINRES TA=25°C

kΩ

TRANSMITTER OUTPUT

Output Voltage Swing

VTOUTSW

The transmitter output loaded with 3kΩ to

ground

±5.0

±5.4

Output Resistance

VTOUTRES

VCC= V+=V-=0V,

Transmitter output=±2V

300

10M

Ω

Output Short-Circuit Current

ITSC

±35

±60

Output Leakage Current

ITOUT(LK)

VCC=3.0V~5.0V, VOUT=±12V,

Transmitter disabled

±25

µA

TIMING CHARACTERISTICS

Maximum Data Rate

RL=3kΩ, CL=1000pF, one transmitter

switching

250

kbps

tPHL

0.15

Receiver Propagation Delay

tPLH

Receiver

input

receiver

output,

CL=150pF

0.15

µs

Enable

tR(EN)

200

Receiver Output Time

Disable

tR(DIS)

Normal operation

200

Transmitter Skew

tTS

|tPHL – tPLH|

100

Receiver Skew

tRS

|tPHL – tPLH|

Transition-Region Slew Rate

VCC=3.3V, TA=25°C,

RL=3kΩ~7kΩ,

measured from +3V

~ -3V or -3V~+3V

CL=150pF~1000pF

V/µs

Notes: 1. Typical values are at TA=25°C.

2. C1~C4=0.1µF, measured at 3.3V±10%. C1=0.047µF, C2~C4=0.33µF, measured at 5.0V ±10%.

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