TFBS4710 Vishay, TFBS4710 Datasheet - Page 2

• Manufacturer Part Number: TFBS4710
• Description: Serial Infrared Transceiver Sir, 115.2 Kbit/s, 2.7 V To 5.5 V Operation
• Manufacturer: Vishay

TFBS4710
Vishay Semiconductors
Functional Block Diagram
Pinout
TFBS4710
weight 100 mg
Pin Description
www.vishay.com
2
Pin Number
1
2
3
4
5
6
18511
Function
Anode
IRED
1
GND
TXD
RXD
V
SD
CC
18282
2
IRED Anode is connected to a power supply. The LED current can be decreased
protection circuit disables the LED driver if the TXD pin is asserted for longer than
3
Shutdown. Setting this pin active for more than 1.5 ms switches the device into
TXD
SD
during received pulses. It is capable of driving a standard CMOS or TTL load.
by adding a resistor in series between the power supply and IRED Anode. A
Received Data Output, normally stays high but goes low for a fixed duration
This Input is used to turn on IRED transmitter when SD is low. An on-chip
4
separate unregulated power supply can be used at this pin.
5
6
Amplifier
Regulated Supply Voltage
shutdown mode
Description
Comparator
Ground
Logic
&
Control
80 µs
Definitions:
In the Vishay transceiver data sheets 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 ver-
sion of the standard in any case obsoletes the former
version.
With introducing the updated versions the old ver-
sions are obsolete. Therefore the only valid IrDA stan-
dard is the actual version IrPhy 1.4 (in Oct. 2002).
GND
Vcc1
Controlled Driver
Push-Pull
Driver
RED C
Vcc2
RXD
Document Number 82612
I/O
O
I
I
Rev. 1.5, 23-Feb-06
Active
HIGH
HIGH
LOW