TFBS4652

www.vishay.com

Vishay Semiconductors

Rev. 1.4, 28-Jan-14

2

Document Number: 84671

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

PINOUT

TFBS4652, bottom view

weight 0.05 g

Definitions:

In

the

Vishay

transceiver

datasheets

the

following

nomenclature is used for defining the IrDA operating modes:

• SIR: 2.4 kbit/s to 115.2 kbit/s, equivalent to the basic serial

infrared standard with the physical layer version IrPhy 1.0

• MIR: 576 kbit/s to 1152 kbit/s

•FIR: 4 Mbit/s

• VFIR: 16 Mbit/s

MIR and FIR were implemented with IrPhy 1.1, followed by

IrPhy 1.2, adding the SIR Low Power Standard. IrPhy 1.3

extended the low power option to MIR and FIR and VFIR

was added with IrPhy 1.4. A new version of the standard in

any case obsoletes the former version.

Notes

• Reference point pin, GND unless otherwise noted.

Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.

PIN DESCRIPTION

PIN NUMBER

SYMBOL

DESCRIPTION

I/O

ACTIVE

1IREDA

A separate unregulated power supply can be used.

2RXD

Receiver output. Normally high, goes low for a defined pulse duration with

the rising edge of the optical input signal. Output is a CMOS tri-state driver,

OLow

3TXD

Transmitter data input. Setting this input above the threshold turns on the transmitter.

This input switches the IRED with the maximum transmit pulse width of about 100 μs.

IHigh

4SD

Shutdown. Logic low at this input enables the receiver, enables the transmitter, and

un-tri-states the receiver output. It must be driven high for shutting down the transceiver.

IHigh

Reference for the logic swing of the output and the input logic levels.

I

Power supply, 2.4 V to 3.6 V. This pin provides power for the receiver and

7

GND

Ground

19284

ABSOLUTE MAXIMUM RATINGS

PARAMETER

TEST CONDITIONS

SYMBOL

MIN.

TYP.

MAX.

UNIT

Supply voltage range, transceiver

-0.5

6

V

Supply voltage range, transmitter

-0.5

6

V

Supply voltage range, digital supply

-0.5

6

V

Voltage at RXD

All states

-0.5

V

Input voltage range,

transmitter TXD

-0.5

6

V

Input currents

For all pins, except IRED anode pin

-40

40

mA

Output sinking current

20

mA

Power dissipation

250

mW

Junction temperature

125

°C

Ambient temperature range (operating)

-25

+85

°C

Storage temperature

-40

+100

°C

See section

“Recommended Solder Profile”

260

°C

Repetitive pulse output current

500

mA

Average output current (transmitter)

100

mA