Copyright © 2013 Future Technology Devices International Limited 1
FT3243S Low Power +3V to +5.5V, 3D, 5R 250kbps RS232 Transceiver IC
Datasheet
Version 1.0
Document No.: FT_000635 Clearance No.: FTDI# 342
Future Technology
Devices International Ltd.
FT3243S
(Low Power +3V to +5.5V, 3D, 5R 250kbps
RS232 Transceiver IC)
The FT3243S is a low power +3V to
+5.5V RS232 transceiver with the
following advanced features:
Meets or exceeds the EIA/TIA-323F and CCITT
V.28/V.24 Specifications for Vcc at +3.3V +/-
10%.
Interoperable with EIA/TIA-232 and adheres
to EIA/TIA-562 down to a +2.7V power
source.
Low quiescent current, 0.5mA (typical) and
1mA (max).
Low shutdown current, 1uA (typical) and 10uA
(max).
3 channels for driving RS232 data
5 channels for receiving RS232 data
Data transfer rates up to 250kbps.
Switch-capacitor regulated voltage converters.
Latch-up free.
ESD Protection for RS232 IO’s
+/-15kV Human Body Model (HBM)
+/-15kV IEC1000-4-2 Air Gap Discharge
+/-8kV IEC1000-4-2 Contact Discharge
Drop-in replacement for MAX3243E, ICL3243E,
ISL4243E, ST3243E, SP3243E and ZT3243E
ONLY AVAILABLE AS PART OF THE USB-DUO KIT
(FT231X +FT4232E)
Neither the whole nor any part of the information contained in, or the product described in this manual, may be adapted or reproduced
in any material or electronic form without the prior written consent of the copyright holder. This product and its documentation are
supplied on an as-is basis and no warranty as to their suitability for any particular purpose is either made or implied. Future Technology
Devices International Ltd will not accept any claim for damages howsoever arising as a result of use or failure of this product. Your
statutory rights are not affected. This product or any variant of it is not intended for use in any medical appliance, device or system in
which the failure of the product might reasonably be expected to result in personal injury. This document provides preliminary
information that may be subject to change without notice. No freedom to use patents or other intellectual property rights is implied by
the publication of this document. Future Technology Devices International Ltd, Unit 1, 2 Seaward Place, Centurion Business Park,
Copyright © 2013 Future Technology Devices International Limited 2
FT3243S Low Power +3V to +5.5V, 3D, 5R 250kbps RS232 Transceiver IC
Datasheet
Version 1.0
Document No.: FT_000635 Clearance No.: FTDI# 342
Glasgow G41 1HH United Kingdom. Scotland Registered Company Number: SC136640
Copyright © 2013 Future Technology Devices International Limited 3
FT3243S Low Power +3V to +5.5V, 3D, 5R 250kbps RS232 Transceiver IC
Datasheet
Version 1.0
Document No.: FT_000635 Clearance No.: FTDI# 342
1 Typical Applications
RS232 interface designs
USB to RS232 converter cables (with FT231X)
Data cables
ePOS adapters
1.1 Part Numbers
Package
28 Pin SSOP
Table 1.1 Part numbers
Note: Packaging is per reel:
Taped and Reel, SSOP is 3,000pcs per reel.
Must be purchased as part of USB-DUO Kit.
Only full reels available.
Copyright © 2013 Future Technology Devices International Limited 4
FT3243S Low Power +3V to +5.5V, 3D, 5R 250kbps RS232 Transceiver IC
Datasheet
Version 1.0
Document No.: FT_000635 Clearance No.: FTDI# 342
Table of Contents
1 Typical Applications ........................................................................ 3
1.1 Part Numbers...................................................................................... 3
2 Device Pin Out and Signal Description ............................................ 5
2.1 28-LD SSOP Package .......................................................................... 5
2.2 SSOP Package Pin Out Description ...................................................... 5
3 Function Description ....................................................................... 7
3.1 Switch-Capacitor Regulated Voltage ................................................... 7
3.2 Controlled Power Down ...................................................................... 7
3.3 ESD Immunity ..................................................................................... 7
3.4 Output Control Truth Table ................................................................. 8
4 Devices Characteristics and Ratings ................................................ 9
4.1 Absolute Maximum Ratings................................................................. 9
4.2 Electrical Characteristics .................................................................. 10
5 Package Parameters ..................................................................... 13
5.1 SSOP-28 Package Mechanical Dimensions ........................................ 13
5.2 Package Markings ............................................................................. 14
5.3 Solder Reflow Profile ........................................................................ 15
6 Contact Information ...................................................................... 16
Appendix A - References ............................................................................ 17
Appendix B - List of Figures and Tables ..................................................... 18
Appendix C - Revision History .................................................................... 19
Copyright © 2013 Future Technology Devices International Limited 5
FT3243S Low Power +3V to +5.5V, 3D, 5R 250kbps RS232 Transceiver IC
Datasheet
Version 1.0
Document No.: FT_000635 Clearance No.: FTDI# 342
2 Device Pin Out and Signal Description
2.1 28-LD SSOP Package
Figure 2.1 SSOP Package Pin Out and Schematic Symbol
2.2 SSOP Package Pin Out Description
Note: The convention used throughout this document for active low signals is the signal name followed by
a #
Pin No.
Name
Type
Description
1
C2+
PWR
Positive terminal of the inverted voltage switch capacitor
2
C2-
PWR
Negative terminal of the inverted voltage switch capacitor
3
V-
PWR
Regulated -5.7V output generated by the voltage converter
4
R1IN
Input
First RS232 receiver input
5
R2IN
Input
Second RS232 receiver input
6
R3IN
Input
Third RS232 receiver input
7
R4IN
Input
Fourth RS232 receiver input
8
R5IN
Input
Fifth RS232 receiver input
9
T1OUT
Output
First RS232 transmitter output
10
T2OUT
Output
Second RS232 transmitter output
11
T3OUT
Output
Third RS232 transmitter output
Copyright © 2013 Future Technology Devices International Limited 6
FT3243S Low Power +3V to +5.5V, 3D, 5R 250kbps RS232 Transceiver IC
Datasheet
Version 1.0
Document No.: FT_000635 Clearance No.: FTDI# 342
Pin No.
Name
Type
Description
12
T3IN
Input
Third TTL/CMOS transmitter input
13
T2IN
Input
Second TTL/CMOS transmitter input
14
T1IN
Input
First TTL/CMOS transmitter input
15
R5OUT
Output
Fifth TTL/CMOS receiver output
16
R4OUT
Output
Fourth TTL/CMOS receiver output
17
R3OUT
Output
Third TTL/CMOS receiver output
18
R2OUT
Output
Second TTL/CMOS receiver output
19
R1OUT
Output
First TTL/CMOS receiver output
20
R2OUTB
Output
Second TTL/CMOS receiver non-inverting output. Always active
21
INVALID#
Output
Output of a valid signal detection. INVALID is enabled high if a valid RS232
level is present on any receiver input line
22
SHUTDOWN#
Input
Shutdown control. A logic LOW to disable drivers and voltage converter.
23
GREEN#
Input
Set to logic HIGH to keep transmitters on.
24
C1-
PWR
Negative terminal of the bootstrapped voltage switch capacitor
25
GND
PWR
Ground pin of the device
26
VCC
PWR
+3 to 5.5V supply voltage
27
V+
PWR
Regulated +5.4V output generated by the voltage converter
28
C1+
PWR
Positive terminal of the bootstrapped voltage switch capacitor
Table 2.1 Device pinout
Copyright © 2013 Future Technology Devices International Limited 7
FT3243S Low Power +3V to +5.5V, 3D, 5R 250kbps RS232 Transceiver IC
Datasheet
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Document No.: FT_000635 Clearance No.: FTDI# 342
3 Function Description
The FT3243S device is a 3V powered EIA/TIA-232 and V.28/V.24 communications interface device
tailored for low power designs. The device consists of 3 line drivers, 5 line receivers and switch-capacitor
regulated voltage converters. The device operates from a single 3V to 5.5V power supply at guaranteed
data rates of 250kbps with enhanced ESD protection on all RS232 IO pins, exceeding +/-15kV IEC1000-
4-2 Air gap discharge and +/-8kV IEC1000-4-2 Contact discharge.
3.1 Switch-Capacitor Regulated Voltage
The FT3242S device uses switch-capacitor voltage-controlled source and current sink generators to
provide bipolar voltages to maintain compliant EIA/RS232 levels regardless of power supply fluctuations.
The design consists of an internally regulated oscillator, a two phase clock cycling, regulated
complementary MOS switches, fast switching diode and switch capacitors.
The switch capacitor bi-directional current generators operate with smartly regulated CMOS switches and
fast switching diode. The efficiency of these bi-directional current generators is greater than 70%. The
switching frequency is generated by an internal oscillator and regulated by the current loads. The switch
capacitor pump design delivers higher negative bucked voltage than the positive boosted voltage to
achieve a balanced voltage controlled source and sink current generators resulting in balanced bipolar
voltage supplies to the chip.
3.2 Controlled Power Down
FT3243S has a low power shutdown mode controlled by the SHUTDOWN# pin. During shutdown the
driver output and the switch-capacitor regulated voltage converter are disabled with the supply current
falling to less than 1uA.
3.3 ESD Immunity
The RS232 transceiver is usually routed from the serial port connector to the transceiver IC through the
metal trace on the PCB. This trace will have some small amount of resistance that will add some
protection in terms of limiting transient current to the IC. However for added voltage protection, transient
voltage suppressors (TVS) or transorbs are usually necessary to protect the serial port circuitry.
The FT3243S includes built-in transient voltage suppression whereby external ESD protection circuitry is
not required, allowing for a reduction in bill of materials and PCB area required to realise the design.
The FT3243S transceivers meet and exceed the minimum criteria for EN6100-4-2 with +/- 15kV for air
gap discharge and +/- 8kV for contact discharge.
Copyright © 2013 Future Technology Devices International Limited 8
FT3243S Low Power +3V to +5.5V, 3D, 5R 250kbps RS232 Transceiver IC
Datasheet
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3.4 Output Control Truth Table
The following truth table provides the various output control states.
GREEN#
Valid RC
I/P
SHUTDOWN#
TxOUT
RxOUT
RxOUTB
INVALID#
0
No
1
Z
Active
Active
0
0
Present
1
Active
Active
Active
1
1
X
1
Active
Active
Active
X
X
X
0
Z
Z
active
X
Table 3.1 output Control Truth table
Copyright © 2013 Future Technology Devices International Limited 9
FT3243S Low Power +3V to +5.5V, 3D, 5R 250kbps RS232 Transceiver IC
Datasheet
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Document No.: FT_000635 Clearance No.: FTDI# 342
4 Devices Characteristics and Ratings
4.1 Absolute Maximum Ratings
The absolute maximum ratings for the FT3243S devices are as follows. These are in accordance with the
Absolute Maximum Rating System (IEC 60134). Exceeding these may cause permanent damage to the
device.
Parameter
Value
Unit
Conditions
Storage Temperature
-65°C to 150°C
Degrees C
Floor Life (Out of Bag) At Factory Ambient
(30°C / 60% Relative Humidity)
168 Hours
(MSL Level 3
Compliant)*
Hours
IPC/JEDEC J-STD-033A
Ambient Operating Temperature (Power
Applied)
-40°C to 85°C
Degrees C
Power Supply Vcc
-0.3V to +6.0V
Volts
V+
-0.3V to +7.0V
Volts
V-
+0.3V to -7.0V
Volts
|V+|+|V-|
+13.0V
Volts
Icc (DC Vcc or GND current)
+/- 100mA
Milliamps
TxIN, GREEN#, SHUTDOWN#
-0.3V to +6.0V
Volts
RxIN
+/-25V
Volts
TxOUT
+/-15V
Volts
RxOUT, INVALID#
-0.3V to
(Vcc+0.3V)
Volts
Short circuit duration TXOUT
Continuous
Time
Table 4.1 Absolute Maximum Ratings
* If devices are stored out of the packaging beyond this time limit the devices should be baked before
use. The devices should be ramped up to a temperature of +125°C and baked for up to 17 hours.
Copyright © 2013 Future Technology Devices International Limited 10
FT3243S Low Power +3V to +5.5V, 3D, 5R 250kbps RS232 Transceiver IC
Datasheet
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Document No.: FT_000635 Clearance No.: FTDI# 342
4.2 Electrical Characteristics
Unless otherwise stated Vcc = +3.0V to +5.0V, TA = Tmin to Tmax, C1 to C4 = 0.1uF, typical values apply
at Vcc = +3.3V or +5.0V and TA = 25oC
Parameter
Condition
Min
Typ
Max
Units
TTL logic input
T1IN, T2IN, T3IN, GREEN#,
SHUTDOWN#
TTL logic output
R1OUT, R2OUT, R3OUT, R4OUT,
R5OUT, R1OUTB, R2OUTB,
INVALID#
RS232 input
R1IN, R2IN, R3IN, R4IN, R5IN
RS232 output
T1OUT, T2OUT, T3OUT
Charge pump pin
C1+, C1-, C2+, C2-
Power pin
Vcc, GND, V+, V-
Charge pump Caps
C1+, C1-, C2+, C2-
0.1
0.1
1
uF
Temp -40oC to +85oC
Industrial grade
-40
+25
+85
oC
Vcc Voltage range
Vcc = +5.0V Supply
4.5
5
5.5
V
Vcc = +3.3V Supply
3
3.3
3.6
V
Supply current
TTL inputs = Vcc/GND, RS232
input = float, Vcc = 3.3V
0.5
1
mA
Supply current,
AUTOGREEN disabled
GREEN# = Vcc; SHUTDOWN# =
Vcc TTL inputs = Vcc/GND, RS232
input = float, Vcc = 3.3V
0.5
1
mA
Supply current,
AUTOGREEN enabled
GREEN# = GND;SHUTDOWN# =
Vcc TTL inputs = Vcc/GND, RS232
input = float, Vcc = 3.3V
1
10
uA
Supply current,
SHUTDOWN#
enabled
GREEN# = Vcc/GND;SHUTDOWN#
= GND; TTL inputs = Vcc/GND,
RS232 input = float, Vcc = 3.3V
1
10
uA
TTL LOGIC INPUT
Input threshold low
0.8
V
Input threshold high
Vcc = +5.0V supply
2.4
V
Input threshold high
Vcc = +3.3V supply
2
V
Input hysteresis
0.5
V
Input leakage current
Vin = Vcc and GND, TIN, GREEN#,
SHUTDOWN#
+/-
0.01
+/-1
mA
Copyright © 2013 Future Technology Devices International Limited 11
FT3243S Low Power +3V to +5.5V, 3D, 5R 250kbps RS232 Transceiver IC
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Parameter
Condition
Min
Typ
Max
Units
TTL LOGIC OUTPUT
Output voltage low
Iout = 1.6mA
0.4
V
Output voltage high
Iout = -1.0mA
Vcc-
0.6
Vcc-
0.1
V
Output leakage
current
Receiver outputs disabled, Vout =
Vcc or GND, SHUTDOWN# = GND
+/-
0.05
+/-10
uA
Receiver input
Input voltage range
TA = Tmin-Tmax
-25
+25
V
Input threshold low
TA = 25oC, Vcc=5.0V
0.8
1.5
V
TA = 25oC, Vcc=3.3V
0.6
1.2
V
Input threshold high
TA = 25oC
2.4
V
Input hysteresis
TA = 25oC
0.5
V
Input resistance
Vin = +/-25V, TA = 25oC
3
7
kΩ
Transmitter output
Output voltage swing
RL = 3kΩ, All outputs are loaded
+/-5
V
Output resistance
Vcc = V+ = V- = GND, VOUT = +/-
2V
300
Ω
Output short circuit
current
VOUT = GND
+/-60
mA
Output leakage
current
Transmitter disabled, VOUT = +/-
12V
+/-5
+/-25
uA
Mouse driving ability
Transmitter output
voltage
T1IN = T2IN = GND; T3IN =
Vcc;T3OUT = 3kΩ;T1OUT =
T2OUT = -2.5mA
+/-5
V
Timing
Characteristics
Maximum Data rate
RL = 3~7kΩ, CL = 50pF~1000pF;
DR/RC switching, TA = 25oC
250
kbps
Transition region
slew rate
RL = 3~7kΩ, CL = 150pF~1000pF;
one transmitter switching, TA =
25oC, measured from 3V to -3V or
-3V to 3V
6
30
V/us
Copyright © 2013 Future Technology Devices International Limited 12
FT3243S Low Power +3V to +5.5V, 3D, 5R 250kbps RS232 Transceiver IC
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Parameter
Condition
Min
Typ
Max
Units
Transmitter
propagation tPLH
RL = 3kΩ, CL = 1000pF; All loaded
2
us
Transmitter
propagation tPHL
RL = 3kΩ, CL = 1000pF; All loaded
2
us
Transmitter skew
tPHL - tPLH
100
ns
Transmitter output
enable time
400
ns
Transmitter output
disable time
250
ns
Receiver propagation
tPLH
CL = 150pF
0.15
us
Receiver propagation
tPHL
CL = 150pF
0.15
us
Receiver skew
tPHL - tPLH
50
ns
Receiver output
enable time
200
ns
Receiver output
disable time
200
ns
AUTOGREEN TIMING
Receiver input to
INVALID output high
1
us
Receiver input to
INVALID output low
30
us
Power save mode to
transmitter enabled
100
us
ESD tolerance
ESD HBM
+/-15
kV
IEC 1000-4-2
Contact discharge
+/-8
kV
IEC 1000-4-2 Air gap
discharge
+/-8
kV
Table 4.2 Electrical Characteristics
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FT3243S Low Power +3V to +5.5V, 3D, 5R 250kbps RS232 Transceiver IC
Datasheet
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5 Package Parameters
The FT3243S is available in a 28 pin SSOP package. The solder reflow profile for the package is described
in Section 5.3.
5.1 SSOP-28 Package Mechanical Dimensions
Figure 5.1 SSOP-28 Package Dimensions
The FT3243S is supplied in a RoHS compliant 28 pin SSOP package. The package is lead (Pb) free and
uses a ‘green’ compound. The package is fully compliant with European Union directive 2002/95/EC.
This package is nominally 10.20mm x 5.30mm body (10.20mm x 7.80mm including pins). The pins are
on a 0.65 mm pitch. The above mechanical drawing shows the SSOP-28 package.
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FT3243S Low Power +3V to +5.5V, 3D, 5R 250kbps RS232 Transceiver IC
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5.2 Package Markings
Figure 5.2 SSOP-28 Package Markings
Notes:
1. YYWW = Date Code, where YY is year and WW is week number
2. Marking alignment should be centre justified
Line 1 – FTDI Logo
Line 2 – Date Code, Revision
Line 3 – Wafer Lot Number
Line 4 – FTDI Part Number
FT3243S
1 14
1528
Copyright © 2013 Future Technology Devices International Limited 15
FT3243S Low Power +3V to +5.5V, 3D, 5R 250kbps RS232 Transceiver IC
Datasheet
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5.3 Solder Reflow Profile
The FT3243S is supplied in Pb free 28 LD SSOP package. The recommended solder reflow profile for both
package options is shown in 5.3.
Figure 5.3 FT3243 Solder Reflow Profile
The recommended values for the solder reflow profile are detailed in Table 5.1. Values are shown for both
a completely Pb free solder process (i.e. the FT240X is used with Pb free solder), and for a non-Pb free
solder process (i.e. the FT240X is used with non-Pb free solder).
Profile Feature
Pb Free Solder Process
Non-Pb Free Solder Process
Average Ramp Up Rate (Ts to Tp)
3°C / second Max.
3°C / Second Max.
Preheat
- Temperature Min (Ts Min.)
- Temperature Max (Ts Max.)
- Time (ts Min to ts Max)
150°C
200°C
60 to 120 seconds
100°C
150°C
60 to 120 seconds
Time Maintained Above Critical
Temperature TL:
- Temperature (TL)
- Time (tL)
217°C
60 to 150 seconds
183°C
60 to 150 seconds
Peak Temperature (Tp)
260°C
240°C
Time within 5°C of actual Peak
Temperature (tp)
20 to 40 seconds
20 to 40 seconds
Ramp Down Rate
6°C / second Max.
6°C / second Max.
Time for T= 25°C to Peak Temperature,
Tp
8 minutes Max.
6 minutes Max.
Table 5.1 Reflow Profile Parameter Values
Critical Zone: when
T is in the range
T to T
Temperature, T (Degrees C)
Time, t (seconds)
25 P
T = 25º C to T
tp
Tp
TL
t
Preheat
S
tL
Ramp Up Lp
Ramp
Down
T Max
S
T Min
S
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FT3243S Low Power +3V to +5.5V, 3D, 5R 250kbps RS232 Transceiver IC
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6 Contact Information
Head Office – Glasgow, UK
Future Technology Devices International Limited
Unit 1, 2 Seaward Place, Centurion Business Park
Glasgow G41 1HH
United Kingdom
Tel: +44 (0) 141 429 2777
Fax: +44 (0) 141 429 2758
E-mail (Sales)
sales1@ftdichip.com
E-mail (Support)
support1@ftdichip.com
E-mail (General Enquiries)
admin1@ftdichip.com
Branch Office – Taipei, Taiwan
Future Technology Devices International Limited
(Taiwan)
2F, No. 516, Sec. 1, NeiHu Road
Taipei 114
Taiwan , R.O.C.
Tel: +886 (0) 2 8791 3570
Fax: +886 (0) 2 8791 3576
E-mail (Sales)
tw.sales1@ftdichip.com
E-mail (Support)
tw.support1@ftdichip.com
E-mail (General Enquiries)
tw.admin1@ftdichip.com
Branch Office – Tigard, Oregon, USA
Future Technology Devices International Limited
(USA)
7130 SW Fir Loop
Tigard, OR 97223
USA
Tel: +1 (503) 547 0988
Fax: +1 (503) 547 0987
E-Mail (Sales)
us.sales@ftdichip.com
E-Mail (Support)
us.support@ftdichip.com
E-Mail (General Enquiries)
us.admin@ftdichip.com
Branch Office – Shanghai, China
Future Technology Devices International Limited
(China)
Room 408, 317 Xianxia Road,
Shanghai, 200051
China
Tel: +86 21 62351596
Fax: +86 21 62351595
E-mail (Sales)
cn.sales@ftdichip.com
E-mail (Support)
cn.support@ftdichip.com
E-mail (General Enquiries)
cn.admin@ftdichip.com
Web Site
http://ftdichip.com
System and equipment manufacturers and designers are responsible to ensure that their systems, and any Future Technology
Devices International Ltd (FTDI) devices incorporated in their systems, meet all applicable safety, regulatory and system-level
performance requirements. All application-related information in this document (including application descriptions, suggested
FTDI devices and other materials) is provided for reference only. While FTDI has taken care to assure it is accurate, this
information is subject to customer confirmation, and FTDI disclaims all liability for system designs and for any applications
assistance provided by FTDI. Use of FTDI devices in life support and/or safety applications is entirely at the user’s risk, and the
user agrees to defend, indemnify and hold harmless FTDI from any and all damages, claims, suits or expense resulting from
such use. This document is subject to change without notice. No freedom to use patents or other intellectual property rights is
implied by the publication of this document. Neither the whole nor any part of the information contained in, or the product
described in this document, may be adapted or reproduced in any material or electronic form without the prior written consent
of the copyright holder. Future Technology Devices International Ltd, Unit 1, 2 Seaward Place, Centurion Business Park,
Glasgow G41 1HH, United Kingdom. Scotland Registered Company Number: SC136640
Copyright © 2013 Future Technology Devices International Limited 17
FT3243S Low Power +3V to +5.5V, 3D, 5R 250kbps RS232 Transceiver IC
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Appendix A - References
http://www.ftdichip.com/FT-X.htm
http://www.ftdichip.com/Support/Documents/DataSheets/ICs/DS_FT231X.pdf
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FT3243S Low Power +3V to +5.5V, 3D, 5R 250kbps RS232 Transceiver IC
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Appendix B - List of Figures and Tables
List of Figures
Figure 2.1 SSOP Package Pin Out and Schematic Symbol ................................................................... 5
Figure 5.1 SSOP-28 Package Dimensions ....................................................................................... 13
Figure 5.2 SSOP-28 Package Markings .......................................................................................... 14
Figure 5.3 FT3243 Solder Reflow Profile ......................................................................................... 15
List of Tables
Table 1.1 Part numbers ................................................................................................................. 3
Table 2.1 Device pinout ................................................................................................................. 6
Table 3.1 output Control Truth table ............................................................................................... 8
Table 4.1 Absolute Maximum Ratings .............................................................................................. 9
Table 4.2 Electrical Characteristics ................................................................................................ 12
Table 5.1 Reflow Profile Parameter Values ..................................................................................... 15
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FT3243S Low Power +3V to +5.5V, 3D, 5R 250kbps RS232 Transceiver IC
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Appendix C - Revision History
Document Title: Low Power +3V to +5.5V, 3D, 5R 250kbps RS232 Transceiver IC
FT3243S
Document Reference No.: FT_000635
Clearance No.: FTDI# 342
Product Page: http://www.ftdichip.com/FT-X.htm
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Version 1.0 Initial Datasheet Created June 2013
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