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20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
GND
DOUT1C2+
C1−
V+
C1+
TOP VIEW
DOUT2
RIN1
DIN2
DIN1
V−
C2−
12
11
9
10 ROUT1ROUT2
DIN3
PW OR DW PACKAGE
RIN2
DOUT3
V
CC
V
L
PWRDOWN
TRS3386E
www.ti.com
SLLS829C –APRIL 2007– REVISED MARCH 2011
RS-232 TRANSCEIVER WITH SPLIT SUPPLY PIN FOR LOGIC SIDE
Check for Samples: TRS3386E
1
FEATURES
APPLICATIONS
• Hand-Held Equipment
• V
L
Pin for Compatibility With Mixed-Voltage
Systems Down to 2.5 V on Logic Side
• PDAs
• Enhanced ESD Protection on RIN Inputs and
• Cell Phones
DOUT Outputs
• Battery-Powered Equipment
– ±15-kV Human-Body Model
• Data Cables
– ±15-kV IEC 61000-4-2, Air-Gap Discharge
– ±8-kV IEC 61000-4-2, Contact Discharge
• Low 300-μA Supply Current
• Specified 250-kbps Data Rate
• 1-μA Low-Power Shutdown
• Meets EIA/TIA-232 Specifications Down
to 3 V
• Designed to be Interchangeable With Industry
Standard '3386 Devices
DESCRIPTION/ORDERING INFORMATION
The TRS3386E is a three-driver and two-receiver RS-232 interface device, with split supply pins for mixed-signal
operations. All RS-232 inputs and outputs are protected to ±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 small 0.1-μF capacitors for operation from a 3.3-V supply. The TRS3386E is
capable of running at data rates up to 250 kbps, while maintaining RS-232-compliant output levels.
The TRS3386E has a unique V
L
pin that allows operation in mixed-logic voltage systems. Both driver in (DIN)
and receiver out (ROUT) logic levels are pin programmable through the V
L
pin. The TRS3386E is available in a
space-saving thin shrink small-outline package (TSSOP).
ORDERING INFORMATION
T
A
PACKAGE
(1) (2)
ORDERABLE PART NUMBER TOP-SIDE MARKING
TSSOP – PW TRS3386ECPWR RV86EC
0°C to 70°C
SOIC – DW TRS3386ECDWR TRS3386EC
TSSOP – PW TRS3386EIPWR RV86EI
–40°C to 85°C
SOIC – DW TRS3386EIDWR TRS3386EI
(1) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
(2) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2007–2011, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.

DIN2
DOUT3
9 15
Powerdown
RIN1
14
20
11
PWRDOWN
ROUT1
DIN1
DOUT2
8 16
RIN2
1310
ROUT2
DIN1
DOUT1
7 17
5 K
5 K
TRS3386E
SLLS829C –APRIL 2007– REVISED MARCH 2011
www.ti.com
Table 1. TRUTH TABLE (SHUTDOWN FUNCTION)
DRIVER
PWRDWN RECEIVER OUTPUTS CHARGE PUMP
OUTPUTS
L High-Z High-Z Inactive
H Active Active Active
FUNCTIONAL BLOCK DIAGRAM
2 Submit Documentation Feedback Copyright © 2007–2011, Texas Instruments Incorporated
Product Folder Link(s): TRS3386E

TRS3386E
www.ti.com
SLLS829C –APRIL 2007– REVISED MARCH 2011
TERMINAL FUNCTIONS
TERMINAL
DESCRIPTION
NAME NO.
C1+ 1 Positive terminal of the voltage-doubler charge-pump capacitor
V+ 2 5.5-V supply generated by the charge pump
C1– 3 Negative terminal of the voltage-doubler charge-pump capacitor
C2+ 4 Positive terminal of the inverting charge-pump capacitor
C2– 5 Negative terminal of the inverting charge-pump capacitor
V– 6 –5.5-V supply generated by the charge pump
DIN1 7
DIN2 8 Driver inputs
DIN3 9
ROUT2 10
Receiver outputs. Swing between 0 and V
L
.
ROUT1 11
V
L
12 Logic-level supply. All CMOS inputs and outputs are referenced to this supply.
RIN2 13
RS-232 receiver inputs
RIN1 14
DOUT3 15
DOUT2 16 RS-232 driver outputs
DOUT1 17
GND 18 Ground
V
CC
19 3-V to 5.5-V supply voltage
Powerdown input
PWRDWN 20 L = Powerdown
H = Normal operation
Absolute Maximum Ratings
(1)
over operating free-air temperature range (unless otherwise noted)
MIN MAX UNIT
V
CC
to GND –0.3 6 V
V
L
to GND –0.3 V
CC
+ 0.3 V
V+ to GND –0.3 7 V
V– to GND 0.3 –7 V
V+ + |V–|
(2)
13 V
DIN, PWRDWN to GND –0.3 6
V
I
Input voltage V
RIN to GND ±25
DOUT to GND ±13.2
V
O
Output voltage V
ROUT –0.3 V
L
+ 0.3
Short-circuit duration DOUT to GND Continuous
T
A
= 70°C, 20-pin TSSOP
Continuous power dissipation 559 mW
(derate 7 mW/°C above 70°C)
T
J
Junction temperature 150 °C
T
stg
Storage temperature range –65 150 °C
Lead temperature (soldering, 10 s) 300 °C
(1) Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the
specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
(2) V+ and V– can have maximum magnitudes of 7 V, but their absolute difference cannot exceed 13 V.
Copyright © 2007–2011, Texas Instruments Incorporated Submit Documentation Feedback 3
Product Folder Link(s): TRS3386E

TRS3386E
SLLS829C –APRIL 2007– REVISED MARCH 2011
www.ti.com
Recommended Operating Conditions
MIN MAX UNIT
V
CC
Supply voltage 3 5.5 V
V
L
Supply voltage 2.25 V
CC
V
V
L
= 3 V or 5.5 V 0.8
Input logic threshold low DIN, PWRDWN V
V
L
= 2.3 V 0.6
V
L
= 5.5 V 2.4
Input logic threshold high DIN, PWRDWN V
L
= 3 V 2.0 V
V
L
= 2.7 V 1.4
TRS3386ECPWR 0 70
Operating temperature °C
TRS3386EIPWR –40 85
Receiver input voltage –25 25 V
Electrical Characteristics
over operating free-air temperature range, V
CC
= V
L
= 3 V to 5.5 V, C1–C4 = 0.1 μF (tested at 3.3 V ± 10%), C1 = 0.047 μF,
C2–C4 = 0.33 μF (tested at 5 V ± 10%) (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP
(1)
MAX UNIT
DC Characteristics (V
CC
= 3.3 V or 5 V, T
A
= 25°C)
Powerdown supply current PWRDWN = GND, All inputs at V
CC
or GND 1 10 μA
Supply current PWRDWN = V
CC
, No load 0.3 1 mA
(1) Typical values are at V
CC
= V
L
= 3.3 V, T
A
= 25°C.
ESD Protection
PARAMETER TEST CONDITIONS TYP UNIT
Human-Body Model ±15
RIN, DOUT IEC 61000-4-2 Air-Gap Discharge ±15 kV
IEC 61000-4-2 Contact Discharge ±8
4 Submit Documentation Feedback Copyright © 2007–2011, Texas Instruments Incorporated
Product Folder Link(s): TRS3386E
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