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TFDU6102 Datasheet(PDF) 3 Page - Vishay Siliconix

Part No. TFDU6102
Description  Fast Infrared Transceiver Module (FIR, 4 Mbit/s) for 2.7 V to 5.5 V Operation
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Maker  VISHAY [Vishay Siliconix]
Homepage  http://www.vishay.com
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TFDU6102 Datasheet(HTML) 3 Page - Vishay Siliconix

 
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TFDU6102
Document Number 82550
Rev. 1.6, 05-Dec-05
Vishay Semiconductors
www.vishay.com
3
Pin Description
Pin Number
"U"
Function
Description
I/O
Active
1VCC2
IRED Anode
Connect IRED anode directly to VCC2. For voltages higher than 3.6 V an
external resistor might be necessary for reducing the internal power
dissipation.
An unregulated separate power supply can be used at this pin.
2IRED
Cathode
IRED cathode, internally connected to driver transistor
3
TXD
This input is used to transmit serial data when SD is low. An on-chip
protection circuit disables the LED driver if the TXD pin is asserted for
longer than 80 µs. When used in conjunction with the SD pin, this pin is
also used to receiver speed mode.
IHIGH
4
RXD
Received Data Output, push-pull CMOS driver output capable of driving a
standard CMOS or TTL load. No external pull-up or pull-down resistor is
required. Floating with a weak pull-up of 500 k
Ω (typ.) in shutdown
mode.
OLOW
5
SD
Shutdown, also used for dynamic mode switching. Setting this pin active
places the module into shutdown mode. On the falling edge of this signal,
the state of the TXD pin is sampled and used to set receiver low bandwidth
(TXD = Low, SIR) or high bandwidth
(TXD = High, MIR and FIR) mode. Will be overwritten by the mode pin input,
which must float, when dynamic programming is used.
IHIGH
6VCC1
Supply Voltage
7
Mode
HIGH: High speed mode, MIR and FIR; LOW: Low speed mode, SIR only
(see chapter "Mode Switching"). Must float, when dynamic programming is
used.
I
Mode
The mode pin can also be used to indicate the dynamically programmed
mode. The maximum load is limited to 50 pF. High indicates FIR/MIR-, low
indicates SIR-mode
O
8
GND
Ground


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