TFBS4650 Vishay, TFBS4650 Datasheet - Page 2

• Manufacturer Part Number: TFBS4650
• Description: TRANSCEIVER, IRDA
• Manufacturer: Vishay

Specifications of TFBS4650

• Data Rate Max: 115.2Kbps
• Data Transmission Distance: 30cm
• Peak Wavelength: 886nm
• Supply Current: 2mA
• Supply Voltage Range: 2.4V To 3.6V
• Operating Temperature Range: -25°C To +85°C
• Msl: MSL 4 - 72 Hours
• External: RoHS Compliant
• External Depth: 1.6mm
• Rohs Compliant: Yes
• Communication Cone: 15°
• Svhc: No SVHC (20-Jun-2011)

Functional Block Diagram
Pin Description
Pinout
TFBS4650, bottom view
weight 0.05 g
Document Number 84672
Rev. 1.1, 03-Jul-06
Pin Number
1
2
3
4
5
6
7
Function
IREDA
IREDC
GND
TXD
RXD
V
SD
CC
19283
TxD
SD
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,
which swings between ground and V
IRED Anode, connected via a current limiting resistor to V
transmitter, and un-tri-states the receiver output. It must be driven high for
Transmitter Data Input. Setting this input above the threshold turns on the
Power Supply, 2.4 V to 3.6 V. This pin provides power for the receiver and
This input switches the IRED with the maximum transmit pulse width of
Shut Down. Logic Low at this input enables the receiver, enables the
PD
transmitter drive section. Connect V
IRED Cathode, do not connect for standard operation
ASIC
Amplifier
unregulated power supply can be used.
shutting down the transceiver.
19284
about 50 µs.
Comparator
Description
transmitter.
Control
Ground
Mode
GND
cc
V
. Receiver echoes transmitter output.
CC
CC1
via an optional filter.
IRED Driver
Tri-State
Driver
CC2
. A separate
Vishay Semiconductors
IREDA
IRED
IREDC
RxD
I/O
O
I
I
TFBS4650
www.vishay.com
Active
HIGH
HIGH
LOW
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