UCC5343 Datasheet, PDF (1/6 Pages) Texas Instruments – IrDA Transceiver with Encoder/Decoder

UCC5343
PRELIMINARY
IrDA Transceiver with Encoder/Decoder
FEATURES
• Micropower in the Sleep Mode, (2µA)
• 3V to 5V Operation
• Wide Dynamic Receiver Range from
200nA to 50mA Typical
• Direct Interface to IrDA Compatible
UARTs or Super I/O ICs
• Supports IrDA Standard to 115.2kbps
Data Rates
• Transmitter Output Stage Capable to
500mA Sink Current
• IrDA Compliant Modulation &
Demodulation Scheme
• Direct Interface to Standard UART
• 16 Pin SSOP, SOIC and DIL Package
BLOCK DIAGRAM
DESCRIPTION
The UCC5343 IrDA Transceiver with Encoder/Decoder supports the
Physical Layer specifications of the IrDA standard. Additional functional-
ity is provided by data format translation between standard UART and
IrDA formats. The UCC5343 is readily interfaced to a standard UART.
The Receiver has a limiting transresistance amplifier to detect a current
signal from a PIN diode and drives RXX pulses into a UART. The re-
ceiver is capable of detecting input currents ranging from 200nA to
greater than 50mA. The receiver signal path is frequency limited by an
internal bandpass filter to reduce interference from other sources of IR
energy.
The output of the receiver is designed for direct interface to standard
UARTs and Super I/O devices up to 115.2kbps. Internal resistors are
provided for decoupling the pin diode supply, minimizing the number of
required external components.
The UCC5343 has low current consumption in the active mode, making
it excellent for applications with low power requirements. The transmit-
ter section has a low impedance open drain MOSFET output. It is capa-
ble of sinking 300mA from an output LED at 3V and 500mA at LED at
5V.
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UDG-97076