_______________________________________________________________________________________

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

sec

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 2)

Figure 3b (Note 2)

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