®
SP3223EH/3243EH
High Speed Intelligent +3.0V to +5.5V
RS-232 Transceivers
s
Meets true EIA/TIA-232-F Standards
from a +3.0V to +5.5V power supply
s
Interoperable with EIA/TIA-232 and
adheres to EIA/TIA-562 down to a +2.7V
power source
s
Auto-Online
™
circuitry automatically
wakes up from a 1µA shutdown
s
Regulated Charge Pump Yields Stable
RS-232 Outputs Regardless of V
CC
Variations
s
Enhanced ESD Specifications:
+15KV Human Body Model
+15KV IEC1000-4-2 Air Discharge
+8KV IEC1000-4-2 Contact Discharge
s
460 Kbps minimum transmission rate
s
Ideal for High Speed RS-232 Applications
DESCRIPTION
The
SP3223EH
and
3243EH
products are RS-232 transceiver solutions intended for portable
or hand-held applications such as notebook and palmtop computers. The "H" series is based
on
Sipex's SP3223E/3243E
series and has been enhanced for high speed. The data rate is
improved to 460Kbps, easily meeting the demands of high speed RS-232 applications. The
SP3223EH
and
3243EH
use an internal high-efficiency, charge-pump power supply that
requires only 0.1µF capacitors in 3.3V operation. This charge pump and
Sipex's
driver
architecture allow the
SP3223EH/3243EH
series to deliver compliant RS-232 performance from
a single power supply ranging from +3.3V to +5.0V. The
SP3223EH
is a 2-driver/2-receiver
device, and the
SP3243EH
is a 3-driver/5-receiver device, ideal for laptop/notebook computer
and PDA applications. The
SP3243EH
includes one complementary receiver that remains
alert to monitor an external device's Ring Indicate signal while the device is shutdown.
The
Auto-Online
feature allows the device to automatically "wake-up" during a shutdown
state when an RS-232 cable is connected and a connected peripheral is turned on. Otherwise,
the device automatically shuts itself down drawing less than 1µA.
SELECTION TABLE
Device
SP3223EH
SP3243EH
Power Supplies
+3.0V to +5.5V
+3.0V to +5.5V
RS-232
Drivers
2
3
RS-232
Receivers
2
5
External
Components
4 capacitors
4 capacitors
Auto-Online
Circuitry
YES
YES
TTL 3-State
YES
YES
No. of
Pins
20
28
Applicable U.S. Patents - 5,306,954; and other patents pending.
SP3223EHDS/11
SP3223EH +3.0V to +5.5V RS-232 Transceivers
© Copyright 2000 Sipex Corporation
1
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation
of the device at these ratings or any other above those
indicated in the operation sections of the specifications
below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may
affect reliability and cause permanent damage to the
device.
V
CC
.......................................................-0.3V to +6.0V
V+ (NOTE 1).......................................-0.3V to +7.0V
V- (NOTE 1)........................................+0.3V to -7.0V
V+ + |V-| (NOTE 1)...........................................+13V
I
CC
(DC V
CC
or GND current).........................+100mA
Input Voltages
TxIN, ONLINE,
SHUTDOWN, EN (SP3223EH).................-0.3V to +6.0V
RxIN...................................................................+15V
Output Voltages
TxOUT...............................................................+15V
RxOUT, STATUS.......................-0.3V to (V
CC
+ 0.3V)
Short-Circuit Duration
TxOUT.....................................................Continuous
Storage Temperature......................-65°C to +150°C
Power Dissipation per package
20-pin PDIP (derate 16.0mW/
o
C above+70
o
C).....1300mW
20-pin SSOP (derate 9.25mW/
o
C above +70
o
C)....750mW
20-pin TSSOP (derate 11.1mW/
o
C above +70
o
C)..900mW
28-pin SOIC (derate 12.7mW/
o
C above +70
o
C)....1000mW
28-pin SSOP (derate 11.2mW/
o
C above +70
o
C).....900mW
NOTE 1:
V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 13V.
SPECIFICATIONS
Unless otherwise noted, the following specifications apply for V
CC
= +3.0V to +5.5V with T
AMB
= T
MIN
to T
MAX
.
Typical values apply at V
CC
= +3.3V or +5.0V and T
AMB
= 25°C.
PARAMETER
DC CHARACTERISTICS
Supply Current,
Auto-Online
1.0
10
µA
All RxIN open, ONLINE = GND,
SHUTDOWN = V
CC
,
V
CC
= +3.3V, T
AMB
= +25° C
SHUTDOWN = GND,
V
CC
= +3.3V, T
AMB
= +25° C
ONLINE = SHUTDOWN = V
CC
,
no load, V
CC
= +3.3V, T
AMB
= +25° C
MIN.
TYP.
MAX.
UNITS
CONDITIONS
Supply Current, Shutdown
Supply Current,
Auto-Online
Disabled
LOGIC INPUTS AND RECEIVER OUTPUTS
Input Logic Threshold
LOW
HIGH
Input Leakage Current
Output Leakage Current
Output Voltage LOW
Output Voltage HIGH
V
CC
- 0.6
1.0
0.3
10
1.0
µA
mA
0.8
2.0
+0.01
+0.05
+1.0
+10
0.4
V
CC
- 0.1
V
µA
µA
V
V
V
CC
= +3.3V or +5.0V, TxIN,
EN (
SP3223EH
), ONLINE,
SHUTDOWN
TxIN, EN, ONLINE, SHUTDOWN,
T
AMB
= +25° C
Receivers disabled
I
OUT
= 1.6mA
I
OUT
= -1.0mA
SP3223EHDS/11
SP3223EH +3.0V to +5.5V RS-232 Transceivers
© Copyright 2000 Sipex Corporation
2
Unless otherwise noted, the following specifications apply for V
CC
= +3.0V to +5.5V with T
AMB
= T
MIN
to T
MAX
.
Typical values apply at V
CC
= +3.3V or +5.0V and T
AMB
= 25°C.
SPECIFICATIONS (continued)
PARAMETER
DRIVER OUTPUTS
Output Voltage Swing
Output Resistance
Output Short-Circuit Current
Output Leakage Current
MIN.
TYP.
MAX.
UNITS
CONDITIONS
+5.0
300
+5.4
V
Ω
All driver outputs loaded with 3K
Ω
to GND, T
AMB
= +25° C
V
CC
= V+ = V- = 0V, V
OUT
= ±2V
V
OUT
= 0V
V
OUT
= ±15V
V
CC
= 0V or 3.0V to 5.5V,
V
OUT
= +12V, Drivers disabled
+35
+70
+60
+100
±25
mA
µA
RECEIVER INPUTS
Input Voltage Range
Input Threshold LOW
Input Threshold LOW
Input Threshold HIGH
Input Threshold HIGH
Input Hysteresis
Input Resistance
3
-15
0.6
0.8
1.2
1.5
1.5
1.8
0.3
5
7
2.4
2.4
15
V
V
V
V
V
V
kΩ
V
CC
= 3.3V
V
CC
= 5.0V
V
CC
= 3.3V
V
CC
= 5.0V
Auto-Online
CIRCUITRY CHARACTERISTICS (ONLINE = GND, SHUTDOWN = V
CC
)
STATUS Output Voltage LOW
STATUS Output Voltage HIGH
Receiver Threshold to Drivers
Enabled (t
ONLINE
)
Receiver Positive or Negative
Threshold to STATUS HIGH
(t
STSH
)
Receiver Positive or Negative
Threshold to STATUS LOW
(t
STSL
)
V
CC
- 0.6
200
0.5
0.4
V
V
µS
µS
I
OUT
= 1.6mA
I
OUT
= -1.0mA
Figure 15
Figure 15
20
µS
Figure 15
SP3223EHDS/11
SP3223EH +3.0V to +5.5V RS-232 Transceivers
© Copyright 2000 Sipex Corporation
3
SPECIFICATIONS (continued)
Unless otherwise noted, the following specifications apply for V
CC
= +3.0V to +5.5V with T
AMB
= T
MIN
to T
MAX
.
Typical values apply at V
CC
= +3.3V or +5.0V and T
AMB
= 25°C.
PARAMETER
TIMING CHARACTERISTICS
Maximum Data Rate
Receiver Propagation Delay
t
PHL
t
PLH
Receiver Output Enable Time
Receiver Output Disable Time
Driver Skew
Receiver Skew
Transition-Region Slew Rate
MIN.
TYP.
MAX.
UNITS
CONDITIONS
460
Kbps
µs
ns
ns
100
1000
ns
ns
V/
µs
R
L
= 3K
Ω
, C
L
= 1000pF, one driver active
Receiver input to Receiver output, C
L
= 150pF
Normal operation
Normal operation
| t
PHL
- t
PLH
|
| t
PHL
- t
PLH
|
V
CC
= 3.3V, R
L
= 3K
Ω
, T
AMB
= 25
o
C,
measurements taken from -3.0V to +3.0V or
+3.0V to -3.0V
0.3
0.3
200
200
50
200
60
TYPICAL PERFORMANCE CHARACTERISTICS
Unless otherwise noted, the following performance characteristics apply for V
CC
= +3.3V, 235Kbps data rate, all drivers
loaded with 3kΩ, 0.1µF charge pump capacitors, and T
AMB
= +25°C.
14
6
12
10
Transmitter Output Voltage [V]
4
2
0
0
-2
-4
-6
Load Capacitance [pF]
500
1000
1500
Vout+
Vout-
Slew Rate [V/µs]
8
6
4
2
0
0
500
1000
1500
Load Capacitance [pF]
2000
+Slew
-Slew
Figure 1. Transmitter Output Voltage VS. Load
Capacitance for the SP3223EH
Figure 2. Slew Rate VS. Load Capacitance for the
SP3223EH
SP3223EHDS/11
SP3223EH +3.0V to +5.5V RS-232 Transceivers
© Copyright 2000 Sipex Corporation
4
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Unless otherwise noted, the following performance characteristics apply for V
CC
= +3.3V, 235Kbps data rate, all drivers
loaded with 3kΩ, 0.1µF charge pump capacitors, and T
AMB
= +25°C.
40
35
30
25
20
15
10
5
118KHz
60KHz
10KHz
6
Transmitter Output Voltage [V]
Supply Current [mA]
4
2
0
0
-2
-4
-6
500
1000
1500
2000
2500
Vout+
Vout-
0
0
500
1000
1500
Load Capacitance [pF]
2000
Load Capacitance [pF]
Figure 3. Supply Current VS. Load Capacitance when
Transmitting Data for the SP3223EH
Figure 4. Transmitter Output Voltage VS. Load
Capacitance for the SP3243EH
16
14
12
10
8
6
4
2
0
0
500
1000
1500
2000
2500
3000
Load Capacitance [pF]
+ Slew
- Slew
80
70
60
50
40
30
20
10
0
0
500
1000
1500
2000
2500
3000
Load Capacitance [pF]
118KHz
60KHz
10KHz
Figure 5. Slew Rate VS. Load Capacitance for the
SP3243EH
Figure 6. Supply Current VS. Load Capacitance when
Transmitting Data for the SP3243EH
SP3223EHDS/11
SP3223EH +3.0V to +5.5V RS-232 Transceivers
Supply Current [mA]
Slew Rate [V/µs]
© Copyright 2000 Sipex Corporation
5
京公网安备 11010802033920号
EEWORLD
