UT3243AL-R28-R datasheet(6/10 Pages) UTC

6 / 10 page

UT3243A

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

6 of 10

www.unisonic.com.tw

QW-R502-B62.D



ELECTRICAL CHARACTERISTICS(Cont.)

(VCC = +3.0V~+5.5V, C1~C4=0.1µF (Note 1, 2), TA = TMIN to TMAX, Unless Otherwise Specified)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP MAX UNIT

High

tINVH

µs

Receiver Positive or

Negative Threshold to

INVALID

Low

tINVL

Fig.2

µs

RECEIVER INPUTS

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

0.3

Input Resistance

VRINRES TA = 25°C

kΩ

TRANSMITTER OUTPUTS

Output Voltage Swing

VTOUTSW

All transmitter outputs 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) VOUT=±12V, Transmitters disabled

±25

µA

MOUSE DRIVABILITY

Transmitter Output Voltage

VTOUT

T1IN = T2IN = GND, T3IN = VCC,

T3OUT loaded with 3kΩ to GND,

T1OUT and T2OUT loaded with 2.5mA each

±5.0

TIMING CHARACTERISTICS

Maximum Data Rate

RL = 3kΩ, CL = 1000pF,

one transmitter switching

120

235

kbps

tPHL

0.3

Receiver Propagation Delay

tPLH

Receiver input to receiver output,

CL = 150pF

0.3

µs

Enable

tR(EN)

200

Receiver Output Time

Disable

tR(DIS)

Normal operation

200

Transmitter Skew

tTS

|tPHL – tPLH|　

200

1000

Receiver Skew

tRS

|tPHL – tPLH| 　

100

500

CL = 200pF~2500pF

Transition-Region Slew Rate

VCC=3.3V, TA=25°C,

RL = 3kΩ ~ 7kΩ,

measured from +3V

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

CL = 200pF~1000pF

V/µs

Notes: 1. Typical values are at VCC=3.3V or VCC=5.0V, and TA = 25°C.

2. C1~C4 = 0.1µF, measured at 3.0V~3.6V. C1 = 0.047µF, C2~C4 = 0.33µF, measured at 4.5V~5.5V.

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