MAX232AMLP datasheet(6/38 Pages) MAXIM

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+5V-Powered, Multichannel RS-232

Drivers/Receivers

0.8

1.2

PARAMETER

MIN

TYP

MAX

UNITS

CONDITIONS

Normal operation

VSHDN = 5V (MAX223)

VSHDN = 0V (MAX235/236/240/241)

1.7

2.4

RS-232 Input Logic-Low Voltage

TA = +25°C,

VCC = +5V

0.6

1.5

RS-232 Input Logic-High Voltage

TA = +25°C,

VCC = +5V

Shutdown (MAX223)

VSHDN = 0V,

VEN = +5V (R4IN‚ R5IN)

1.5

2.4

ELECTRICAL CHARACTERISTICS—MAX223/MAX230–MAX241 (continued)

(MAX223/230/232/234/236/237/238/240/241, VCC = +5V ±10%; MAX233/MAX235, VCC = +5V ±5%‚ C1–C4 = 1.0µF;

MAX231/MAX239, VCC = +5V ±10%; V+ = +7.5V to +13.2V; TA = TMIN to TMAX; unless otherwise noted.) (Note 5)

Shutdown (MAX223)

VSHDN = 0V,

VEN = +5V (R4IN, R5IN)

Normal operation

VSHDN = +5V (MAX223)

VSHDN = 0V (MAX235/236/240/241)

RS-232 Input Hysteresis

VCC = +5V, no hysteresis in shutdown

0.2

0.5

1.0

RS-232 Input Resistance

TA = +25°C, VCC = +5V

TTL/CMOS Output Voltage Low

IOUT = 1.6mA (MAX231/232/233, IOUT = 3.2mA)

0.4

TTL/CMOS Output Voltage High

IOUT = -1mA

3.5

VCC - 0.4

TTL/CMOS Output Leakage Current

≤ ROUT ≤ VCC; VEN = 0V (MAX223);

VEN = VCC (MAX235–241)

±0.05

±10

µA

MAX223

600

Receiver Output Enable Time

Normal

operation

MAX235/236/239/240/241

400

MAX223

900

Receiver Output Disable Time

Normal

operation

MAX235/236/239/240/241

250

Normal operation

0.5

µs

VSHDN = 0V

(MAX223)

440

Propagation Delay

RS-232 IN to

TTL/CMOS OUT,

CL = 150pF

640

5.1

V/µs

MAX231/MAX232/MAX233, TA = +25°C, VCC = +5V,

RL = 3k

Ω to 7kΩ, CL = 50pF to 2500pF, measured from

+3V to -3V or -3V to +3V

430

Transmitter Output Resistance

VCC = V+ = V- = 0V, VOUT = ±2V

300

Transmitter Output Short-Circuit

Current

±10

tPHLS

tPLHS

Transition Region Slew Rate

MAX223/MAX230/MAX234–241, TA = +25°C, VCC = +5V,

RL = 3k

Ω to 7kΩ‚ CL = 50pF to 2500pF, measured from

+3V to -3V or -3V to +3V

Note 5: All units are production tested at hot except for the MAX240, which is production tested at TA = +25°C. Specifications over

temperature are guaranteed by design.

Maxim Integrated

MAX220–MAX249

MAX232AMLP Datasheet(PDF) 6 Page - Maxim Integrated Products

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