MAX3243EUI datasheet(3/17 Pages) MAXIM

3 / 17 page

MAX3221/MAX3223/MAX3243

+3V to +5.5V RS-232 Transceivers

with AutoShutdown

Maxim Integrated | 3

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Electrical Characteristics (continued)

(VCC = +3.0V to +5.5V, C1–C4 = 0.1µF (Note 2), TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)

Note 2: C1–C4 = 0.1µF, tested at 3.3V ±10%. C1 = 0.047µF, C2–C4 = 0.33µF, tested at 5.0V ±10%.

200

Normal operation

200

Receiver Output Enable Time

Normal operation

tPLH

Receiver input to receiver output,

CL = 150pF

8.0

Transition-Region Slew Rate

V/µs

VCC = 3.3V,

RL = 3kΩ to 7kΩ,

TA = +25°C,

measured from +3V to

-3V or -3V to +3V

Transmitter Skew

200

⏐ tPHL - tPLH ⏐

PARAMETER

MIN

TYP

MAX

UNITS

±25

Output Short-Circuit Current

±35

±60

Output Resistance

300

10M

Output Leakage Current

µA

Input Threshold Low

0.6

1.2

±5.0

±5.4

Output Voltage Swing

Maximum Data Rate

120

235

kbps

Receiver Propagation Delay

0.3

µs

CONDITIONS

VCC = V+ = V- = 0V, transmitter output = ±2V

VOUT = ±12V, VCC = 0V or 3.0V to 5.5V,

transmitters disabled

RL = 3kΩ, CL = 1000pF, one transmitter switching

All transmitter outputs loaded with 3k

Ω to ground

Receiver Output Disable Time

tPHL

0.3

Input Voltage Range

-25

Input Hysteresis

0.3

Input Threshold High

Input Resistance

TA = +25°C

0.8

1.5

1.8

2.4

1.5

2.4

TA = +25°C

VCC = 3.3V

VCC = 5.0V

CL = 200pF to 2500pF

CL = 200pF to 1000pF

630

±5

Transmitter Output Voltage

T1IN = T2IN = GND, T3IN = VCC,

T3OUT loaded with 3k

Ω to GND, T1OUT and

T2OUT loaded with 2.5mA each

MAX3221/MAX3223

MAX3243

200

1000

Receiver Skew

100

⏐ tPHL - tPLH ⏐

MAX3221/MAX3223

MAX3243

100

500

RECEIVER INPUTS

TIMING CHARACTERISTICS

TRANSMITTER OUTPUTS

MOUSE DRIVEABILITY (MAX3243)

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