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MAX3111EEWI

SPI/MICROWIRE-Compatible UART and ±15kV ESD Protected RS-232 Transceivers with Internal Capacitors

Maxim Integrated 

SPI/MICROWIRE-Compatible UART and ±15kV ESD-

Protected RS-232 Transceivers with Internal Capacitors

ELECTRICAL CHARACTERISTICS—MAX3111E (continued)

(VCC = +3.0V to +3.6V, VA = TMIN to TMAX, unless otherwise noted. Typical values are measured for baud rate set to 9600baud at

VCC = +3.3V, TA = +25°C.) (Note 2)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

RS-232 AC TIMING

Maximum Data Rate

RL = 3kΩ, CL = 1000pF,

one-transmitter switching

250

kbps

Receiver Propagation Delay

Transmitter Skew

Receiver Skew

tPHL

tPLH

|tPHL - tPLH |

|tPHL - tPLH |

Receiver input to receiver output

CL = 150pF

(Note 5)

150

ns

ns

150

200

ns

100

ns

Transition-Region Slew Rate

VCC = 3.3V,

RL = 3kΩ to 7kΩ,

CL = 150pF to

1000pF

6

TA = +25°C,

measured from

+3V to -3V or

-3V to +3V

CL = 150pF to

2500pF

4

30

V/µs

30

Note 2: All currents into the device are positive; all currents out of the device are negative. All voltages are referred to device

ground unless otherwise noted.

Note 3: ICCSHDN(H) represents a hardware-only shutdown. In hardware shutdown, the UART is in normal operation and the charge

pumps for the RS-232 transmitters are shut down.

Note 4: ICCSHDN(H+S) represents a simultaneous software and hardware shutdown in which the UART and charge pumps are

shut down.

Note 5: Transmitter skew is measured at the transmitter zero cross points.

_______________________________________________________________________________________ 7

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