TOIM5232 Datasheet, PDF (1/13 Pages) Vishay Siliconix – SIR Endec for IrDA® Applications Integrated Interface Circuit

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TOIM5232
Vishay Semiconductors
SIR Endec for IrDA^® Applications Integrated Interface Circuit
20810
DESCRIPTION
The TOIM5232 endec IC provides proper pulse shaping for
the SIR IrDA front end infrared transceivers as of the
4000-series.
For transmitting the TOIM5232 shortens the RS232 output
signal to IrDA compatible electrical pulses to drive the
infrared transmitter. In the receive mode, the TOIM5232
stretches the received infrared pulses to the proper bit width
depending on the operating bit rate. The IrDA bit rate varies
from 2.4 kbit/s to 115.2 kbit/s.
The TOIM5232 is using a crystal clock 3.6864 MHz
(< 7.5 MHz) for its pulse stretching and shortening. The
clock is generated by the internal oscillator. An external
clock can be used, too. The TOIM5232 is programmable to
operate from 1200 bit/s to 115.2 kbit/s by the
communication software through the RS232 port. The
output pulses are software programmable as either 1.627 μs
or 3/16 of bit time. The typical power consumption is very
low with about 10 mW in operational state and in the order
of a few microwatts in standby mode. TOIM5232 in the tiny
QFN-20 package is the space-minimized version of
TOIM5232.
ULC Technology: High performance gate array package
using multiple metal layer CMOS technology featuring
sub-micron channel lengths (0.35 μm).
FEATURES
• Pulse shaping function according IrDA SIR
physical layer
• Directly interfaces the SIR transceiver to a
RS232 port
• QFN-20 - package, 4 mm x 4 mm x 0.75 mm
• Low operating current
• Programmable baud clock generator (1200 Hz
to
115.2 kHz), 13 baud rates
• 3/16 bit pulse duration or 1.627 μs pulse selectable
• For 2.7 V to 3.6 V operation voltage, 5 V tolerant inputs
• Qualified for lead (Pb)-free and Sn/Pb solder processing
(MSL3)
• Material categorization: For definitions of compliance
please see www.vishay.com/doc?99912
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PARTS TABLE
PART
TOIM5232-TR3
DESCRIPTION
SIR Endec for IrDA application
QTY/REEL
6000 pcs
PRODUCT SUMMARY
PART NUMBER
DATA RATE
(kbit/s)
TOIM5232
1.2 to 115
DIMENSIONS
HxLxW
(mm x mm x mm)
4 x 4 x 0.75
LINK DISTANCE
(m)
-
OPERATING
VOLTAGE
(V)
2.7 to 3.6
IDLE SUPPLY
CURRENT
(mA)
2
Rev. 1.3, 04-Jul-12
1
Document Number: 81749
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