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TRS3253EIRSMR
RS-232 Transceiver With Split Supply Pin For Logic Side
POWER
APD+
30 seconds
3.3V, 5V
DIN
ROUT
DOUT
RS232 3 5
FORCEON
FORCEOFF
Logic Supply
Product
Folder
Order
Now
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TRS3253ESLLS850D –JANUARY 2008–REVISED MARCH 2017
TRS3253E RS-232 Transceiver With Split Supply Pin for Logic Side Features VL Pin for Compatibility With Mixed-Voltage
Systems Downto 1.8Von Logic Side Enhanced ESD Protectionon RIN Inputs and
DOUT Outputs ±15-kV IEC 61000-4-2 Air-Gap Discharge ±8-kV IEC 61000-4-2 Contact Discharge ±15-kV Human Body Model Low 300-μA Supply Current Specified 1000-kbps Data Rate Auto Powerdown Plus Feature
Applications Hand-Held Equipment Cell Phones Battery-Powered Equipment Data Cables POS Equipment HDMI Switch Matrix Debug Ports
DescriptionThe TRS3253E deviceisa three-driver and five-
receiver RS-232 interface device, with split supply
pins for mixed-signal operations without needing an
external voltage translator. All RS-232 inputs and
outputs are protectedto ±15 kV using the IEC 61000-
4-2 Air-Gap Discharge method, ±8 kV using the IEC
61000-4-2 Contact Discharge method, and ±15 kV
using the Human Body Model.
The charge pump requires only four capacitors for
operation froma single 3.3-V or 5-V supply. The
TRS3253Eis capableof runningat data rates upto
1000 kbps, while maintaining RS-232 compliant
output levels.
The TRS3253Eis availableina space-saving VQFN
package (4-mm× 4-mm RSM).
Auto-powerdown-plus automatically powers down
driversto reduce power after 30 secondsof inactivity. powerdown state supply current is 10 μA
maximum.
Receiver input voltage statusis availableon INVALID
logic output even when the deviceisin powerdown
state.
Device Information(1)(1) Forall available packages, see the orderable addendumat
the endofthe data sheet.
Simplified Diagram
