_______________________________________________________________________________________

3

ELECTRICAL CHARACTERISTICS (continued)

CONDITIONS

Ω

300

10M

Output Resistance

V

±5

±5.4

Output Voltage Swing

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

Figure 3a

s

15

30

60

Receiver or Transmitter Edge to

Transmitters Shut Down

µs

100

Receiver or Transmitter Edge to

Transmitters Enabled

µs

1

Receiver Positive or Negative

Threshold to INVALID High

V

INVALID, Output Voltage High

V

0.4

INVALID Output Voltage Low

V

-0.3

0.3

Receiver Input Threshold to

INVALID Output Low

-2.7

V

2.7

Receiver Input Threshold to

INVALID Output High

±15

±8

R_IN, T_OUT

kV

±15

µA

±25

Output Leakage Current

±60

mA

Output Short-Circuit Current

All transmitter outputs loaded with 3k

Ω to

ground

Figure 3b (Note 3)

Figure 3b (Note 3)

Figure 3b

Figure 3a

Human Body Model

transmitters

disabled

IEC1000-4-2 Contact Discharge

IEC1000-4-2 Air Discharge

5.5V (MAX3235E)

3.6V (MAX3233E)

±15kV ESD-Protected, 1µA, 250kbps, 3.3V/5V, Dual

RS-232 Transceivers with Internal Capacitors

±25

MAX3233E

MAX3235E

50

µs

70

Receiver Positive or Negative

Threshold to INVALID Low

Figure 3b

TRANSMITTER OUTPUTS

ESD PROTECTION

Positive threshold

Negative threshold

Note 3: A transmitter/receiver edge is defined as a transition through the transmitter/receiver input logic thresholds.