SP3220E/EB/EU
+3.0V to +5.5V RS-232 Driver/Receiver Pair
FEATURES
■ Meets all EIA/TIA-232-F Standards
from a +3.0V to +5.5V power supply
• Interoperable with RS-232 and V.28 at +2.7V
■ Supports High Serial Data Rates:
• 120kbps SP3220E
• 250kbps SP3220EB
• 1Mbps SP3220EU
■ 1µA Low Power Shutdown Mode
■ Footprint Compatible with MAX3221E, ISL3221
■ 4 x 1.0µF External Charge Pump Capacitors
■ Improved ESD Specifications:
+15kV Human Body Model
+15kV IEC61000-4-2 Air Discharge
+8kV IEC61000-4-2 Contact Discharge
EN 1
C1+ 2
V+ 3
C1- 4
C2+ 5
C2- 6
V- 7
R1IN 8
SP3220
E/EB/EU
16 SHDN
15 V
CC
14 GND
13 T1OUT
12 No Connect
11 T1IN
10 No Connect
9 R1OUT
Now Available in Lead Free Packaging
The
SP3220E
devices are RS-232 driver/receiver solutions intended for portable or hand-
held applications such as palmtop computers, intrumentation and consumer products. These
devices incorporate a high-efficiency, charge-pump power supply that allows the
SP3220E
devices to deliver true RS-232 performance from a single power supply ranging from +3.0V
to +5.0V. This charge pump requires only 0.1µF capacitors in 3.3V operation. The ESD toler-
ance of the these devices are over +/-15kV for both Human Body Model and IEC61000-4-2
Air discharge test methods. All devices have a low-power shutdown mode where the driver
outputs and charge pumps are disabled. During shutdown, the supply current falls to less
than 1µA.
DESCRIPTION
SELECTION TABLE
MODEL
SP3220E
SP3220EB
SP3220EU
Power
Supplies
+3.0V to +5.5V
+3.0V to +5.5V
+3.0V to +5.5V
RS-232
Drivers
1
1
1
RS-232
Receivers
1
1
1
External
Components
4 Capacitors
4 Capacitors
4 Capacitors
Shutdown
Yes
Yes
Yes
Data Rate
120kbps
250kbps
1Mbps
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP3220E_EB_EU_101_060311
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, EN, SHDN...........................-0.3V to Vcc + 0.3V
RxIN...................................................................+25V
Output Voltages
TxOUT.............................................................+13.2V
RxOUT, .......................................-0.3V to (V
CC
+0.3V)
Short-Circuit Duration
TxOUT....................................................Continuous
Storage Temperature......................-65°C to +150°C
NOTE 1:
V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 13V.
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 Vcc = +3.3V or +5.0V and
T
AMB
= 25
o
C, C1 - C4 = 0.1µF.
PARAMETER
DC CHARACTERISTICS
Supply Current
Shutdown Supply Current
0.3
1.0
1.0
10
mA
µA
no load, V
CC
= 3.3V,
T
AMB
= 25
o
C, TxIN = GND or V
CC
SHDN = GND, V
CC
= 3.3V,
T
AMB
= 25
o
C, TxIN = Vcc or GND
TxIN, EN, SHDN, Note 2
Vcc = 3.3V, Note 2
Vcc = 5.0V, Note 2
TxIN, EN, SHDN,
T
AMB
= +25
o
C, V
IN
= 0V to V
CC
Receivers disabled, V
OUT
= 0V to V
CC
I
OUT
= 1.6mA
I
OUT
= -1.0mA
Driver output loaded with 3KΩ to
GND, T
AMB
= +25
o
C
MIN.
TYP.
MAX.
UNITS
CONDITIONS
Power Dissipation per package
16-pin SSOP (derate 9.69mW/
o
C above +70
o
C)...............775mW
16-pin Wide SOIC (derate 11.2mW/
o
C above +70
o
C)........900mW
16-pin TSSOP (derate 10.5mW/
o
C above +70
o
C)..............840mW
ELECTRICAL CHARACTERISTICS
LOGIC INPUTS AND RECEIVER OUTPUTS
Input Logic Threshold LOW
Input Logic Threshold HIGH
Input Logic Threshold HIGH
Input Leakage Current
Output Leakage Current
Output Voltage LOW
Output Voltage HIGH
DRIVER OUTPUTS
Output Voltage Swing
+5.0
+5.4
V
V
CC
-0.6
V
CC
-0.1
GND
2.0
2.4
+0.01
+0.05
+1.0
+10
0.4
0.8
V
V
V
µA
µA
V
V
NOTE 2: Driver input hysteresis is typically 250mV.
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP3220E_EB_EU_101_060311
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.
PARAMETER
DRIVER OUTPUTS (continued)
Output Resistance
Output Short-Circuit Current
Output Leakage Current
RECEIVER INPUTS
Input Voltage Range
Input Threshold LOW
Input Threshold LOW
Input Threshold HIGH
Input Threshold HIGH
Input Hysteresis
Input Resistance
TIMING CHARACTERISTICS
Data Rate SP3220E
Data Rate SP3220EB
Data Rate SP3220EU
Receiver Propagation Delay, t
PHL
Receiver Propagation Delay, t
PLH
Receiver Output Enable Time
Receiver Output Disable Time
Driver Skew
Receiver Skew
Transition-Region Slew Rate
120
250
1000
0.15
0.15
200
200
100
50
30
235
kbps
kbps
kbps
µs
µs
ns
ns
ns
ns
V/µs
| t
PHL
- t
PLH
|, T
AMB
= 25°C
| t
PHL
- t
PLH
|
R
L
= 3KΩ, C
L
= 1000pF
R
L
= 3KΩ, C
L
= 1000pF
R
L
= 3KΩ, C
L
= 250pF
Receiver input to Receiver
output, C
L
= 150pF
Receiver input to Receiver
output, C
L
= 150pF
3
-25
0.6
0.8
1.2
1.5
1.5
1.8
0.3
5
7
2.4
2.4
+25
V
V
V
V
V
V
kΩ
Vcc = 3.3V
Vcc = 5.0V
Vcc = 3.3V
Vcc = 5.0V
300
+35
+60
+25
Ω
mA
µA
MIN.
TYP.
MAX.
UNITS
CONDITIONS
ELECTRICAL CHARACTERISTICS
V
CC
= V+ = V- = 0V, T
OUT
=+2V
V
OUT
= 0V
V
OUT
=
+12V, V
CC
= GND to 5.5V,
Drivers disabled
Vcc = 3.3V, R
L
= 3kΩ, T
AMB
=
25°C,
measurements taken from
-3.0V to +3.0V or +3.0V to -3.0V
(SP3220E and SP3220EB)
Vcc = 3.3V, R
L
= 3kΩ, T
AMB
=
25°C,
measurements taken from
-3.0V to +3.0V or +3.0V to -3.0V
(SP3220EU)
Transition-Region Slew Rate
90
V/µs
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP3220E_EB_EU_101_060311
3
TYPICAL PERFORMANCE CHARACTERISTICS
Unless otherwise noted, the following performance characteristics apply for V
CC
= +3.3V, 250kbps data rate, all
drivers loaded with 3kΩ, 0.1µF charge pump capacitors, and T
AMB
= +25°C.
30
6
T1 at Full Data Rate
T2 at 1/16 Full Data Rate
T1+T2 Loaded with 3k/CLoad
Transmitter Output
Voltage (V)
25
Icc (mA)
125Kbps
4
2
0
-2
-4
-6
0
1000
60Kbps
20Kbps
T1 at 250Kbps
TxOUT
+
20
15
10
5
0
0
1000
2000
3000
TxOUT
-
4000
5000
2000
3000
4000
5000
Load Capacitance (pF)
Load Capacitance (pF)
Figure 1. Icc vs Load Capacitance for the
SP3220EB.
Figure 2. Transmitter Output Voltage vs Load
Capacitance for the SP3220EB.
6
Transmitter Output
Voltage (V)
12
4
2
0
-2
-4
-6
2.7
3
TxOUT
+
10
Supply Current (mA)
8
6
4
2
0
2.7
T1 Loaded with 3K // 1000pf @ 250Kbps
TxOUT
-
3.5
4
Supply V oltage (V)
4.5
5
3
3.5
4
4.5
5
Supply Voltage (V)
Figure 3. Transmitter Output Voltage vs Supply
Voltage for the SP3220EB.
Figure 4. Supply Current vs Supply Voltage for the
SP3220EB.
25
Slew rate (V/ )
s
40
- Slew
+ Slew
1Mbps
20
15
10
5
0
0
500
1000
2000 3000
30
Icc (mA)
2Mbps
500Kbps
20
10
0
4000
5000
0
250
500
1000
2000
3000
4000
Load Capacitance (pF)
Load Capacitance (pF)
Figure 5. Slew Rate vs Load Capacitance for the
SP3220EB.
Figure 6. Supply Current vs Supply Voltage for the
SP3220EU.
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP3220E_EB_EU_101_060311
4
TYPICAL PERFORMANCE CHARACTERISTICS: Continued
Unless otherwise noted, the following performance characteristics apply for V
CC
= +3.3V, 250kbps data rate, all
drivers loaded with 3kΩ, 0.1µF charge pump capacitors, and T
AMB
= +25°C.
6
4
2Mbps
1.5Mbps
1Mbps
6
4
TxOUT
+
Transmitter Output
Voltage (V)
2Mbps
1.5Mbps
1Mbps
Transmitter
Output V oltage (V)
2
0
-2
-4
-6
2
0
-2
-4
-6
2.5
2.7
TxOUT
-
0
250
500
1000
1500
2000
Load Capacitance (pF)
3
3.5
4
Supply V oltage (V)
4.5
5
Figure 7. Transmitter Output Voltage vs Load
Capacitance for the SP3220EU.
Figure 8. Transmitter Output Voltage vs Supply
Voltage for the SP3220EU.
16
14
Supply Current (mA)
12
10
8
6
4
2
0
T1 Loaded with 3K // 1000pf @1Mbps
2.7
3
3.5
4
4.5
5
Supply Voltage (V)
Figure 9. Supply Current vs Supply Voltage for the
SP3220EU.
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP3220E_EB_EU_101_060311
5
京公网安备 11010802033920号
EEWORLD
