3V to 5.5V, IrDA Infrared Transceiver with

Integrated RS-232 Interface

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3

ELECTRICAL CHARACTERISTICS (continued)

Data rate = 2.4kbps

Data rate = 115kbps

IR Receiver Disable Time

10

µs

IR Receiver Enable Time

Delay until maximum IR receive data rate is valid

300

µs

IR Receiver Output Pulse Width

BAUD16 = static

(Note 3)

190

µs

1

1.6

8

IR TRANSMITTER

Transmitter Rise Time

10% to 90% of 200mA drive current

20

600

ns

Transmitter Fall Time

90% to 10% of 200mA drive current

20

600

ns

Transmitter Output Resistance

1.15

2

Ω

0.9

1.6

µs

Off-Leakage Current

1.43

2.23

0.01

10.0

µA

IrDA ENCODER/DECODER (ENDEC)

Maximum Operating Frequency

Maximum frequency at BAUD16

2

MHz

IR Output Pulse Width

BAUD16 Operating Frequency Range

34.6

2000

kHz

RS-232 RECEIVER

Input Voltage Range

-25

25

V

Input Threshold Low

0.6

1.2

V

0.8

1.5

Input Threshold High

1.5

2.4

V

1.8

2.4

Input Hysteresis

0.3

V

Input Resistance

35

7

k

Ω

Receiver Propagation Delay

R_IN to R_OUT,

300

ns

300

Receiver Skew

300

ns

RS-232 TRANSMITTER OUTPUTS

Output Voltage Swing

T1OUT, T2OUT, loaded with 3k

Ω to GND

±5

±5.4

V

Output Resistance

300

10M

Ω

Output Short-Circuit Current

±35

±60

mA

Output Leakage Current

RS-232 transceiver shutdown

±25

µA

Maximum Data Rate

120

235

kbps

Transmitter Skew

300

ns

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

IR TRANSMITTER

IrDA ENCODER/DECODER (ENDEC)

RS-232 RECEIVER

RS-232 TRANSMITTER OUTPUTS