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HSDL-3201

IrDAW Data 1.2 Low Power Compliant 115.2 kb/s Infrared Transceiver

HP => Agilent Technologies 

3

Recommended Application Circuit Components

Component

C1

Recommended Value

1.0 µF

Note

1

Absolute Maximum Ratings

For implementations where case to ambient thermal resistance is

≤ 50°C/W.

Parameter

Storage Temperature

Operating Temperature

LED Supply Voltage

Supply Voltage

Input Voltage: TXD, SD

Output Voltage: RXD

Solder Reflow

Temperature Profile

Symbol

TS

TA

VVLED

VCC

VI

VO

Min.

-40

-25

-0.5

-0.5

0

-0.5

Max.

100

85

7

7

VCC + 0.5

VCC + 0.5

Units

°C

°C

V

V

V

V

See Reflow Profile, page 19

Transceiver I/O Truth

Table

The LED and RXD outputs are

controlled by the combination of

the TXD and SD pins and light

falling on the receiver. As shown

in the table below, the transmitter

is non-inverting; the LED is on

when the TXD pin is high and off

when TXD is low. The receiver is

inverting; the RXD pin is low

during IrDA signal pulses and

high when the receiver does not

see any light. When shutdown

(SD pin high), the LED is off (the

state of the TXD pin does not

matter), and the RXD pin is

pulled high with a weak internal

pullup.

Shutdown Mode Notes

When the HSDL-3201 is in

Shutdown Mode (SD pin high), the

part presents different impedances

to the rest of the circuit than when

it is in normal mode.

RXD Pin: This pin is NOT Tri-

state. During shutdown the

equivalent circuit is a weak

pullup (~300 kΩ) to Vcc. The

ESD protection diodes to Vcc and

Ground are also present.

TXD Pin: Input protection

diodes are present.

VLED Pin: Possible leakage

current of 1.5 nA.

SD Pin: Will draw approximately

16 nA when driven high.

Marking Information

The unit is marked with the

letters “A” and the datecode

“YWW” on the shield for front

options. For top options, the part

is marked as “YWW” where Y is

the last digit of the year, and WW

is the workweek.

SD

Low

High

TXD

High

Low

Don’t care

LED

On

Off

Off

Receiver

Don’t care

IrDA Signal

No Signal

Don’t care

RXD

Not Valid

Low

High

High

Notes

2, 3

4, 5

6

Caution: The BiCMOS inherent to this design of this component

increases the component’s susceptibility to damage from

electrostatic discharge (ESD). It is advised that normal static

precautions be taken in handling and assembly of this

component to prevent damage and/or degradation which may

be induced by ESD.

Ordering Information

Specify the part number followed

by an option number.

HSDL-3201#XXX

There are five options available:

Front Options

#011 Taped in a short strip

(no reel), 10 per strip

#001 Taped and 7” Reel

Packaging, 500 per reel

#021 Taped and 13” Reel

Packaging, 2500 per reel

Top Options

#018 Taped in a short strip

(no reel), 10 per strip

#008 Taped and 13” Reel

Packaging, 2500 per reel

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