TECHNICAL DATA
Interface Transceiver of RS-232 Standard
with One Supply Voltage
DESCRIPTION
ILX3232
The ILX3232 is a 3V powered EIA/TIA-232 and V.28/V.24 communication interface with low power
requirements, high data-rate capabilities. ILX3232 has a proprietary low dropout transmitter output stage
providing true RS-232 performance from 3 to 5.5V supplies. The device requires only four small 0.1 µF
standard external capacitors for operations from 3V supply.
The ILX3232 has two receivers and two drivers. The device is guaranteed to run at data rates of
250Kbps while maintaining RS-232 output levels. Typical applications are Notebook, Subnotebook and
Palmtop Computers, Battery Powered Equipment, Hand-Held Equipment, Peripherals and Printers.
FEATURES
•
300 µA SUPPLY CURRENT
•
120Kbps MINIMUM GUARENTEED DATA RATE
•
3V/µs MINIMUM GUARANTEED SLEW RATE
•
ENHANCED ESD SPECIFICATIONS:
±15kV IEC1000-4-2 Air Discharge
•
AVAILABLE IN DIP-16, SO-16,TSSOP16 AND
SOP16L(W)
TSSOP 16
SOP16L(W)
Ordering Information
ILX3232N Plastic DIP
ILX3232D
SOIC
ILX3232TSD
TSSOP
ILX3232DW
SOP(W)
Т
А
= from -40 to 85
о
С
for all packages
PIN CONFIGURATION
January 2009, Ver. 04
ILX3232
PIN DESCRIPTION
PlN N°
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
SYMBOL
C
1
+
V+
C
1
C
2
+
C
2
V-
T2
OUT
R2
IN
R2
OUT
T2
IN
T1
IN
R1
OUT
R1
IN
T1
OUT
GND
V
CC
NAME AND FUNCTION
Positive Terminal for the first Charge Pump Capacitor
Doubled Voltage Terminal
Negative Terminal for the first Charge Pump Capacitor
Positive Terminal for the second Charge Pump Capacitor
Negative Terminal for the second Charge Pump Capacitor
Inverted Voltage Terminal
Second Transmitter Output Voltage
Second Receiver Input Voltage
Second Receiver Output Voltage
Second Transmitter Input Voltage
First Transmitter Input Voltage
First Receiver Output Voltage
First Receiver Input Voltage
First Transmitter Output Voltage
Ground
Supply Voltage
ABSOLUTE MAXIMUM RATING
Symbol
V
CC
V+
V-
V+ +|V-|
T
IN
R
IN
T
OUT
R
OUT
t
SHORT
Transmitter Input Voltage Range
Receiver Input Voltage Range
Transmitter Output Voltage Range
Receiver Output Voltage Range
Transmitter Output Short to GND Time
Parameter
Supply Voltage
Doubled Voltage Terminal
Inverted Voltage Terminal
Value
-0.3 to 6
(V
CC
- 0.3) to 7
0.3 to -7
13
-0.3 to 6
± 25
± 13.2
-0.3 to (V
CC
+ 0.3)
Continuous
Unit
V
V
V
V
V
V
V
V
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these
condition is not implied. V+ and V-can have a maximum magnitude of +7V, but their absolute addition can not exceed 13 V.
January 2009, Ver. 04
ILX3232
ELECTRICAL CHARACTERISTICS
(C
1
- C
4
= 0.1µF, V
CC
= 3V to 5.5V, T
A
= -40 to 85°C, unless otherwise specified.
Typical values are referred to T
A
= 25°C)
Symbol
I
SUPPLY
Parameter
VCC Power Supply
Current
No Load
No Load
Test Conditions
V
CC
= 3V ±10%
V
CC
= 5V ±10%
T
A
= 25°C
T
A
= 25°C
Min.
Typ.
2.5
6
Max.
5
10
Unit
mA
mA
LOGIC INPUT ELECTRICAL CHARACTERISTICS
(C
1
- C
4
= 0.1µF, V
CC
= 3V to 5.5V, T
A
= -40 to 85°C, unless otherwise specified.
Typical values are referred to T
A
= 25°C)
Symbol
V
TIL
V
TIH
Parameter
Input Logic Threshold Low
Input Logic Threshold High
Test Conditions
T-IN (Note 1)
V
CC
= 3.3V
V
CC
= 5V
T-IN
Min.
2
2.4
± 0.01
±1
Typ.
Max.
0.8
Unit
V
V
V
µA
Input Leakage Current
I
IL
Note1: Transmitter input hysteresis is typically 250mV
TRANSMITTER ELECTRICAL CHARACTERISTICS
(C
1
- C
4
= 0.1µF tested at V
CC
= 3V to 5.5V, T
A
= -40 to 85°C, unless otherwise specified.
Typical values are referred to T
A
= 25°C)
Symbol
V
TOUT
Parameter
Output Voltage Swing
Transmitter Output
Resistance
Output Short Circuit
Current
Test Conditions
All Transmitter outputs are
loaded with 3KΩ to GND
V
CC
= V+ = V- = 0V
V
CC
= 3V to 5V
V
CC
= 5.0V
V
CC
= 3.0V
V
OUT
= ± 2V
V
OUT
= 0V
Min.
±5
± 3.5
300
Typ.
± 5.4
± 4.0
10M
± 60
Ω
mA
Max.
Unit
V
R
TOUT
I
TSC
RECEIVER ELECTRICAL CHARACTERISTICS
(C
1
- C
4
= 0.1µF tested at V
CC
= 3V to 5.5V, T
A
= -40 to 85°C, unless otherwise specified.
Typical values are referred to T
A
= 25°C)
Symbol
V
RIN
V
RIL
V
RIH
V
RIHYS
R
RIN
V
ROL
Parameter
Receiver Input Voltage
Operating Range
RS-232 Input Threshold
Low
RS-232 Input Threshold
High
Input Hysteresis
Input Resistance
TTL/CMOS Output Voltage
Low
TTL/CMOS Output Voltage
High
T
A
= 25°C
I
OUT
= 1.6mA
I
OUT
= 3.2mA
I
OUT
= -0.5mA
I
OUT
= -1mA
3
V
CC
= 3.3V
V
CC
= 5.5V
V
CC
= 3.3V
V
CC
= 5.5V
V
CC
-0.6 V
CC
-0.1
V
0.4
V
Test Conditions
Min.
-25
T
A
= 25°C
T
A
= 25°C
T
A
= 25°C
T
A
= 25°C
V
CC
= 3.3V
V
CC
= 5V
V
CC
= 3.3V
V
CC
= 5V
0.6
0.8
1.2
1.5
1.5
1.8
0.3
5
7
2.4
2.4
Typ.
Max.
25
Unit
V
V
V
V
kΩ
V
ROH
January 2009, Ver. 04
ILX3232
TIMING CHARACTERISTICS
(C
1
- C
4
= 0.1µF, V
CC
= 3V to 5.5V, T
A
= -40 to 85°C, unless otherwise specified.
Typical values are referred to T
A
= 25°C)
Symbol
D
R
t
PHLR
t
PLHR
t
PHLT
t
PLHT
|t
PHLR
- t
PLHR
|
|t
PHLT
- t
PLHT
|
S
RT
Parameter
Data Transfer Rate
Propagation Delay Input
to Output
Propagation Delay Input
to Output
Receiver Propagation
Delay Difference
Transmitter Propagation
Delay Difference
Transition Slew Rate
R
L
= 3KΩ
R
XIN
= R
XOUT
R
L
= 3KΩ
Test Conditions
C
L2
= 1000pF
one trasmitter switching
C
L
= 150pF
C
L
= 2500pF
Min.
120
Typ.
240
4.0
2.0
300
300
R
L
= 3KΩ to 7KΩ V
CC
= 3.3V
T
A
= 25°C
measured from +3V to -3V or -3V to +3V
C
L
= 150pF to 1000pF
3
30
9.7
5.0
Max.
Unit
Kbps
µs
µs
ns
ns
V/µs
Transmitter Skew is measured at the transmitter zero cross points
APPLICATION CIRCUITS
CAPACITANCE VALUE (µF)
V
CC
3.0 to 5.5
C1
0.1
C2
0.1
C3
0.1
C4
0.1
Cbypass
0.1
January 2009, Ver. 04
ILX3232
TYPICAL OPERATING CHARACTERISTICS
(V
CC
= +3.3V, 240kbps data rate, 0.1μF capacitors, all transmitters loaded with 3kΩ, T
A
= +25°C, unless otherwise noted.)
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
SLEW RATE
vs. LOAD CAPACITANCE
SUPPLY CURRENT vs. LOAD CAPACITANCE
WHEN TRANSMITTING DATA
January 2009, Ver. 04
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