MAX3246ECBX-T(2010) Ver la hoja de datos (PDF) - Maxim Integrated

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Fabricante

MAX3246ECBX-T
(Rev.:2010)

±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers

Maxim Integrated 

MAX3222E/MAX3232E/MAX3237E/

MAX3241E/MAX3246E

±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,

Up to 1Mbps, True RS-232 Transceivers

TIMING CHARACTERISTICS—MAX3222E/MAX3232E/MAX3241E/MAX3246E

(VCC = +3V to +5.5V, C1–C4 = 0.1µF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 3, 4)

PARAMETER

Maximum Data Rate

Receiver Propagation Delay

Receiver Output Enable Time

Receiver Output Disable Time

SYMBOL

tPHL

tPLH

CONDITIONS

RL = 3kΩ,

CL = 1000pF,

one transmitter

switching

TA = TMIN to TMAX

(MAX3222E/MAX3232E/

MAX3241E) (Note 6)

TA = +25°C (MAX3246E)

Receiver input to receiver output,

CL = 150pF

Normal operation (except MAX3232E)

Normal operation (except MAX3232E)

MIN

250

250

TYP MAX UNITS

kbps

0.15

µs

0.15

200

ns

200

ns

Transmitter Skew

Receiver Skew

|tPHL - tPLH| (Note 7)

|tPHL - tPLH|

100

ns

50

ns

Transition-Region Slew Rate

VCC = +3.3V, TA = +25°C,

RL = 3kΩ to 7kΩ, measured

CL = 150pF

from +3.0V to -3.0V or -3.0V to to 1000pF

6

+3.0V, one transmitter switching

30 V/µs

TIMING CHARACTERISTICS—MAX3237E

(VCC = +3V to +5.5V, C1–C4 = 0.1µF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 3)

PARAMETER

CONDITIONS

MIN TYP MAX UNITS

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

250

MBAUD = GND

Maximum Data Rate

Receiver Propagation Delay

Receiver Output Enable Time

Receiver Output Disable Time

Transmitter Skew (Note 7)

Receiver Skew

VCC = +3.0V to +4.5V, RL = 3kΩ, CL = 250pF,

one transmitter switching, MBAUD = VCC

VCC = +4.5V to +5.5V, RL = 3kΩ, CL = 1000pF,

one transmitter switching, MBAUD = VCC

R_IN to R_OUT, CL = 150pF

tPHL

tPLH

Normal operation

Normal operation

|tPHL - tPLH|, MBAUD = GND

|tPHL - tPLH|, MBAUD = VCC

|tPHL - tPLH|

1000

1000

0.15

0.15

2.6

2.4

100

50

kbps

µs

µs

µs

ns

ns

VCC = +3.3V,

CL = 150pF

MBAUD = GND

6

Transition-Region Slew Rate

RL = 3kΩ to 7kΩ,

+3.0V to -3.0V or

to 1000pF

MBAUD = VCC

24

30

150 V/µs

-3.0V to +3.0V,

TA = +25°C

CL = 150pF to 2500pF,

MBAUD = GND

4

30

Note 3: MAX3222E/MAX3232E/MAX3241E: C1–C4 = 0.1µF tested at +3.3V ±10%; C1 = 0.047µF, C2, C3, C4 = 0.33µF tested at +5.0V

±10%. MAX3237E: C1–C4 = 0.1µF tested at +3.3V ±5%, C1–C4 = 0.22µF tested at +3.3V ±10%; C1 = 0.047µF, C2, C3, C4 =

0.33µF tested at +5.0V ±10%. MAX3246E: C1-C4 = 0.22µF tested at +3.3V ±10%; C1 = 0.22µF, C2, C3, C4 = 0.54µF tested at

+5.0V ±10%.

Note 4: MAX3246E devices are production tested at +25°C. All limits are guaranteed by design over the operating temperature range.

Note 5: The MAX3237E logic inputs have an active positive feedback resistor. The input current goes to zero when the inputs are at

the supply rails.

Note 6: MAX3241EEUI is specified at TA = +25°C.

Transmitter skew is measured at the transmitter zero crosspoints.

4

Maxim Integrated

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