1µA Supply Current, 1Mbps, 3.0V to 5.5V,

RS-232 Transceivers with AutoShutdown Plus

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3

ELECTRICAL CHARACTERISTICS (continued)

CONDITIONS

Ω

300

10M

Output Resistance

V

±5

±5.4

Output Voltage Swing

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

Figure 4a

T3OUT loaded with 3k

Ω to GND,

T1OUT and T2OUT loaded with

2.5mA each

sec

15

30

60

Receiver or Transmitter Edge to

Transmitters Shutdown

µs

100

Receiver or Transmitter Edge to

Transmitters Enabled

µs

30

Receiver Positive or Negative

Threshold to INVALID Low

µs

1

Receiver Positive or Negative

Threshold to INVALID High

V

INVALID, READY

(MAX3224–MAX3227)

Output Voltage High

V

0.4

INVALID, READY

(MAX3224–MAX3227)

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

V

±5

Transmitter Output Voltage

µA

±25

Output Leakage Current

±60

mA

Output Short-Circuit Current

All transmitter outputs loaded with 3k

Ω to

ground

Figure 4a

Negative threshold

Positive threshold

Transmitters disabled

TRANSMITTER OUTPUTS

MOUSE DRIVEABILITY (MAX3244/MAX3245)