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TRS3243CDBR
3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver With +/-15-kV IEC ESD Protection 28-TSSOP 0 to 70
POWER
3.3 V, 5 V
DIN
ROUT
DOUT
RS232
RIN
RS232 3 5
FORCEON
FORCEOFF
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TRS3243SLLS806B–JUNE 2007–REVISED JUNE 2015
TRS3243 3-V to 5.5-V Multichannel RS-232 Line Driver and Receiver
With ±15-kV ESD (HBM) Protection Features 2 Applications Operates With 3-Vto 5.5-V VCC Supply • Battery-Powered Systems Single-Chip and Single-Supply Interface • Tablets
for IBM® PC/AT™ Serial Port • Notebooks RS-232 Bus-Pin ESD Protectionof • Laptops±15 kV Using Human-Body Model (HBM) • Hand-Held Equipment Meetsor Exceeds the Requirementsof
TIA/EIA-232-F and ITU V.28 Standards
3 Description Three Drivers and Five Receivers The TRS3243 device consists
and five line receivers, which• Operatesupto 250 kbps interface.A ±15-kV ESD (HBM)• Low Active Current: 300-μA Typical (serial-port connection pins,• Low Standby Current: 1-μA Typical power features save power
outputs ROUT2B and INVALID are always enabledto• External Capacitors:4× 0.1 μF
allow checking for ring indicator and valid RS232• Accepts 5-V Logic Input With 3.3-V Supply input.• Always-Active Noninverting Receiver
Output (ROUT2B)
Device Information(1) Operating Temperature TRS3243C: 0°Cto 70°C– TRS3243I: –40°Cto 85°C Serial-Mouse Driveability (1) Forall available packages, see the orderable addendumat
the endofthe data sheet.• Automatic Power-Down Featureto
Disable Driver Outputs When Valid RS-232 SignalIs Sensed
Simplified Schematic
