SP385E [EXAR]
Enhanced 3V or 5V RS-232 Line Driver/Receiver;
| 型号： | SP385E |
| 厂家： | 
EXAR CORPORATION |
| 描述： | Enhanced 3V or 5V RS-232 Line Driver/Receiver |
| 文件： | 总15页 (文件大小：737K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SP385E
Enhanced +3V or +5V RS-232 Line Driver/Receiver
FEATURES
18
17
16
15
14
13
12
11
10
N/C
1
2
3
4
5
6
7
8
9
ON/OFF
■ Operates from 3.3V or 5V Power Supply
■ Meets all EIA-232D and V.28 Specifica-
tions at 5V.
C +
1
V
CC
V+
GND
■ Meets EIA-562 Specifications at 3.3V
■ Two Drivers and Receivers
C -
T
OUT
IN
1
1
■ Operates with 0.1µF to 10µF Capacitors
■ High data rate - 120kbps Under Load
■ Low Power Shutdown ≤ 1µA
■ 3-State TTL/CMOS Receiver Outputs
■ Low Power CMOS - 5mA Operation
■ Improved ESD Specifications:
+15kV Human Body Model
C +
R
R
2
1
1
C -
2
OUT
IN
V-
T
T
R
1
T OUT
2
IN
2
+15kV IEC61000-4-2 Air Discharge
+8kV IEC61000-4-2 Contact Discharge
R IN
OUT
2
2
Now Available in Lead Free Packaging
DESCRIPTION
Exar's SP385E is an enhanced version of the SP200 family of RS-232 line drivers/receivers. The
SP385E offers +3.3V operation for EIA-562 and EIA-232 applications. The SP385E features offered
maintains the same performance features offered in its predecessors. The SP385E is available in
plastic SOIC or SSOP packages operating over the commercial and industrial temperature ranges.
The SP385E is pin compatible to the LTC1385 EIA-562 transceiver with the exception that the drivers
are disabled with the ON/OFF pin.
TyPICAL APPLICATION CIRCUIT
RS232 OUTPUTS
RS232 INPUTS
T
T
2
1
Charge
Pump
R
R
2
1
TTL/CMOS INPUTS
TTL/CMOS OUTPUTS
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP385E_100_030811
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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.
Power Dissipation
V
................................................................... +6.0V
V+CC.............................................(Vcc-0.3V) to +13.2V
V- .................................................................... -13.2V
20-pin SSOP ..................................................750mW
(derate 9.25mW/°C above +70 °C)
Input Voltages
18-pin Wide SOIC.........................................1260mW
(derate 15.7mW/°C above +70 °C)
TxIN, .......................................-0.3V to (Vcc + 0.3V)
RxIN...................................................................+15V
Output Voltages
TxOUT.................................(V+, +0.3V) to (V-, -0.3V)
RxOUT........................................-0.3V to (VCC +0.3V)
Short-Circuit Duration
TxOUT....................................................Continuous
Storage Temperature......................-65°C to +150°C
ELECTRICAL CHARACTERISTICS
VCC = +3.3V +10%; cap on (V+) and (V-) = 1.0µF, C1 = C2 = 0.1µF; TMIN to TMAX unless otherwise noted.
PARAMETER
MIN.
TyP.
MAX. UNITS CONDITIONS
TTL INPUT
Input Logic Threshold LOW
Input Logic Threshold HIGH
Logic Pullup Current
Maximum Data Rate
TTL OUTPUT
0.8
V
TxIN, ON/OFF, Vcc = 3.3V
TxIN, ON/OFF, Vcc = 3.3V
TIN = 0V
2.0
V
15
200
µA
120
kbps CL = 2500pF, RL = 3kΩ
TTL/CMOS Output
Voltage LOW
0.5
V
IOUT = 3.2mA, Vcc = 3.3V
IOUT = -1.0mA
TTL/CMOS Output
Voltage HIGH
2.4
V
Leakage Current
+0.05
+4.2
+10
µA
ON/OFF = 0V, 0V ≤ VOUT ≤ Vcc,
TA = 25°C
EIA-562 OUTPUT
Output Voltage Swing
+3.7
V
All transmitter outputs loaded with
3kΩ to GND
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP385E_100_030811
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ELECTRICAL CHARACTERISTICS
VCC = +3.3V +10%; cap on (V+) and (V-) = 1.0µF, C1 = C2 = 0.1µF; TMIN to TMAX unless otherwise noted.
PARAMETER
MIN.
TyP. MAX. UNITS CONDITIONS
EIA-562 OUTPUT (continued)
Power-Off Output Resistance
Output Short-Circuit Current
EIA-562 INPUT
300
Ω
VCC = 0V, VOUT=+2V
+10
mA
Infinite Duration
Input Voltage Range
-15
0.8
15
V
V
Input Threshold LOW
1.2
1.7
0.5
5
VCC = 3.3V, TA = +25°C
VCC = 3.3V, TA = +25°C
VCC = 3.3V, TA = +25°C
VIN = 15V to -15V
Input Threshold HIGH
Input Hysteresis
2.4
1.0
7
V
0.2
3
V
Input Resistance
kΩ
DyNAMIC CHARACTERISTICS
Driver Propagation Delay
Receiver Propagation Delay
Instantaneous Slew Rate
4.0
1.5
µs
µs
TTL to RS-562
RS-562 to TTL
30
V/µs
CL = 10pF, RL = 3kΩ - 7kΩ:
TA = +25°C
Transition-Region Slew Rate
10
V/µs
CL = 2500pF, RL = 3kΩ;
Measured from +2V to -2V or -2V
to +2V
Output Enable Time
300
ns
ns
Output Disable Time
1000
POWER REQUIREMENTS
Vcc Power Supply Current
Vcc Power Supply Current
3
6
8
mA
mA
No load, TA = +25°C; Vcc = 3.3V
All transmitters RL = 3kΩ,
TA = +25°C
Shutdown Supply Current
0.01
5
µA
Vcc = 3.3V, TA = +25°C
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP385E_100_030811
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ELECTRICAL CHARACTERISTICS
VCC = +3.3V +10%; cap on (V+) and (V-) = 1.0µF, C1 = C2 = 0.1µF; TMIN to TMAX unless otherwise noted.
PARAMETER
MIN.
TyP.
MAX. UNITS CONDITIONS
TTL INPUT
Input Logic Threshold LOW
Input Logic Threshold HIGH
Logic Pullup Current
Maximum Data Rate
TTL OUTPUT
0.8
V
TxIN, ON/OFF
TxIN, ON/OFF
TIN = 0V
2.0
V
15
200
µA
120
kbps CL = 2500pF, RL = 3kΩ
TTL/CMOS Output
Voltage LOW
0.4
V
IOUT = 3.2mA, Vcc = 5.0V
IOUT = -1.0mA, Vcc = 5.0V
TTL/CMOS Output
Voltage HIGH
3.5
V
Leakage Current
+0.05
+9
+10
µA
ON/OFF = 0V, 0V ≤ VOUT ≤ Vcc,
TA = 25°C
EIA-232 OUTPUT
Output Voltage Swing
+5.0
300
V
Ω
All transmitter outputs loaded with
3kΩ to GND
Power-Off Output Resis-
tance
VCC = 0V, VOUT=+2V
Output Short-Circuit Current
EIA-232 INPUT
+18
mA
Infinite Duration
Input Voltage Range
Input Threshold LOW
Input Threshold HIGH
Input Hysteresis
-15
0.8
15
V
V
1.2
1.7
0.5
5
VCC = 5V, TA = +25°C
VCC = 5V, TA = +25°C
VCC = 5V, TA = +25°C
VIN = 15V to -15V
2.4
1.0
7
V
0.2
3
V
Input Resistance
kΩ
DyNAMIC CHARACTERISTICS
Propagation Delay
1.5
10
µs
RS-232 to TTL
Instantaneous Slew Rate
30
V/µs
CL = 10pF, RL = 3kΩ - 7kΩ:
TA = +25°C
Transition-Region Slew Rate
V/µs
CL = 2500pF, RL = 3kΩ;
Measured from +3V to -3V or -3V
to +3V
Output Enable Time
400
250
ns
ns
Output Disable Time
POWER REQUIREMENTS
Vcc Power Supply Current
Vcc Power Supply Current
Shutdown Supply Current
10
25
1
15
10
mA
mA
µA
No load, TA = +25°C; Vcc = 5V
All transmitters RL = 3kΩ, TA = +25°C
Vcc = 5V, TA = +25°C
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP385E_100_030811
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TyPICAL PERFORMANCE CHARACTERISTICS
-11
-10
-9
12
10
8
V
= 5V
CC
-8
V
= 5V
CC
-7
6
4
2
0
V
CC
= 4V
-6
V
= 4V
CC
-5
-4
-3
0
2
4
6
8
10 12 14
0
5
10 15 20 25 30 35 40
Load Current (mA)
Load Current (mA)
30
25
20
15
10
5
8.4
8.2
8.0
7.8
7.6
7.4
7.2
V
= 5V
CC
Load current = 0mA
= 25 C
T
A
V
= 4V
CC
V
= 3V
CC
7.0
6.8
0
4.5
4.75
5.0
(Volts)
5.25
5.5
-55 -40
0
25
70
85
125
V
Temperature ( C)
CC
PINOUT
20
19
18
17
16
15
14
13
12
11
18
N/C
1
2
ON/OFF
N/C
1
2
3
4
5
6
7
8
9
ON/OFF
17
16
15
14
13
12
11
10
C +
1
V
C +
1
V
CC
CC
V+
3
GND
V+
GND
C -
1
4
T
OUT
IN
C -
1
T
OUT
IN
1
1
C +
2
5
R
R
T
C +
R
R
2
1
1
1
1
C -
2
6
OUT
IN
C -
2
OUT
IN
V-
7
V-
T
T
R
1
1
T OUT
2
8
T
IN
T OUT
IN
2
2
2
R
IN
9
R OUT
2
R IN
OUT
2
2
2
N/C
10
N/C
18-pin WSOIC
20-pin SSOP
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP385E_100_030811
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TyPICAL OPERATING CIRCUIT
+5V INPUT
+
+5V INPUT
10µF
10µF
+
17
V
1.0µF
16V
+
19
2
1.0µF
16V
+
2
C
V
+
+
C
3
7
0.1µF
6.3V
+
+
+5V to +10V
+
V+
V-
3
7
0.1µF
6.3V
+5V to +10V
Voltage Doubler
+
V+
V-
Voltage Doubler
4
5
4
5
C
+
+10V to -10V
Voltage Inverter
1.0µF
16V
0.1µF
16V
+
C
+
+10V to -10V
Voltage Inverter
1.0µF
16V
0.1µF
16V
+
6
6
400kΩ
400kΩ
15
12
T
T
OUT
T
IN
IN
1
17
14
1
1
T
T
OUT
T
IN
IN
1
1
1
400kΩ
400kΩ
8
11
T
T
OUT
T
2
2
8
2
13
T
T
OUT
T
2
2
2
14
9
13
10
R
1
R
OUT
OUT
R IN
1
1
16
9
15
12
R
1
R
OUT
OUT
R IN
5kΩ
5kΩ
1
1
5kΩ
5kΩ
R
2
R
R IN
2
2
R
2
R
R IN
2
2
18
SP385E
16
ON/OFF
20
SP385E
18
ON/OFF
GND
GND
SOIC Package
SSOP Package
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP385E_100_030811
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FEATURES
Driver/Transmitter
The Exar SP385E is a +3V or +5V EIA-232/
EIA-562 line transceiver. It is a pin-for-pin
alternative for the SP310A and will operate in
the same socket with capacitors ranging from
0.1µF to 10µF, either polarized or non–polar-
ized, in +3V supplies. The SP385E offers the
same features such as 120kbps guaranteed
transmission rate, increased drive current for
longer and more flexible cable configurations,
low power dissipation and overall ruggedized
construction for commercial and industrial
environments. The SP385E also includes a
shutdown feature that tri-states the drivers and
the receivers.
The drivers are inverting transmitters, which
accept TTL or CMOS inputs and output the
RS-232 signals with an inverted sense relative
to the input logic levels. Typically the RS-232
output voltage swing is ±9V for 5V supply and
±4.2V for 3.3V supply. Even under worst case
loading conditions of 3kΩ and 2500pF, the
output is guaranteed to be ±5V for a 5V supply
and ±3.7V for a 3.3V supply which adheres to
EIA-232 and EIA-562 specifications, respec-
tively. The transmitter outputs are protected
against infinite short-circuits to ground without
degradation in reliability.
The instantaneous slew rate of the transmit-
ter output is internally limited to a maximum
of 30V/µs in order to meet the standards [EIA
232-D 2.1.7, Paragraph (5)]. However, the
transition region slew rate of these enhanced
products is typically 10V/µs. The smooth tran-
sition of the loaded output from VOL to VOH
clearly meets the monotonicity requirements of
the standard [EIA 232-D 2.1.7, Paragraphs (1)
& (2)].
The SP385E includes a charge pump voltage
converter which allows it to operate from a
single +3.3V or +5V supply. These convert-
ers double the VCC voltage input in order to
generate the EIA-232 or EIA-562 output levels.
For +5V operation, the SP385E driver out-
puts adhere to all EIA-232D and CCITT V.28
specifications. While at +3.3V operation, the
outputs adhere to EIA-562 specifications. Due
to Exar's efficient charge pump design, the
charge pump levels and the driver outputs are
less noisy than other 3V EIA-232 transceivers.
Receivers
The receivers convert RS-232 input signals to
inverted TTL signals. Since the input is usually
from a transmission line, where long cable
lengths and system interference can degrade
the signal, the inputs have a typical hyster-
esis margin of 500mV. This ensures that the
receiver is virtually immune to noisy transmis-
sion lines.
The SP385E has a single control line which
simultaneously shuts down the internal DC/DC
converter and puts all transmitter and receiver
outputs into a high impedance state.
The SP385E is available in 18-pin plastic
SOIC and 20-pin plastic SSOP packages
for operation over commercial and industrial
temperature ranges. Please consult the factory
for surface-mount packaged parts supplied on
tape-on-reel as well as parts screened to MIL-
M-38510.
The input thresholds are 0.8V minimum and
2.4V maximum, again well within the ±3V RS-
232 requirements. The receiver inputs are also
protected against voltages up to ±15V. Should
an input be left unconnected, a 5kΩ pull-down
resistor to ground will commit the output of the
receiver to a high state.
The SP385E is ideal for +3.3V battery ap-
plications requiring low power operation. The
charge pump strength allows the drivers to
provide ±4.0V signals, plenty for typical EIA-
232 applications since the EIA-232 receivers
have input sensitivity levels of less than ±3V.
In actual system applications, it is quite pos-
sible for signals to be applied to the receiver
inputs before power is applied to the receiver
circuitry. This occurs for example when a PC
user attempts to print only to realize the printer
wasn’t turned on. In this case an RS-232 signal
from the PC will appear on the receiver input
at the printer. When the printer power is turned
on, the receiver will operate normally. All of
these enhanced devices are fully protected.
THEORy OF OPERATION
The SP385E device is made up of three basic
circuit blocks — 1) a driver/transmitter, 2) a
receiver and 3) a charge pump.
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP385E_100_030811
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Charge Pump
The charge pump is a Exar–patented design
(5,306,954) and uses a unique approach
compared to older less–efficient designs. The
charge pump still requires four external capaci-
tors, but uses a four–phase voltage shifting
technique to attain symmetrical 10V power
supplies. There is a free–running oscillator
that controls the four phases of the voltage
shifting. A description of each phase follows.
Phase 4
— VDD transfer — The fourth phase of the
clock connects the negative terminal of C2
to ground, and transfers the generated l0V
across C2 to C4, the VDD storage capacitor.
Again, simultaneously with this, the positive
side of capacitor C1 is switched to +5V and
the negative side is connected to ground, and
the cycle begins again.
Phase 1
Since both V+ and V– are separately gener-
ated from VCC; in a no–load condition V+ and
V– will be symmetrical. Older charge pump
approaches that generate V– from V+ will
show a decrease in the magnitude of V– com-
pared to V+ due to the inherent inefficiencies
in the design.
— VSS charge storage —During this phase of
the clock cycle, the positive side of capacitors
C1 and C2 are initially charged to +5V. Cl+
is then switched to ground and the charge in
C1– is transferred to C2–. Since C2+ is con-
nected to +5V, the voltage potential across
capacitor C2 is now 10V.
The clock rate for the charge pump typically
operates at 15kHz. The external capacitors
can be as low as 0.1µF with a 16V breakdown
voltage rating.
Phase 2
— VSS transfer — Phase two of the clock con-
nects the negative terminal of C2 to the VSS
storage capacitor and the positive terminal of
C2 to ground, and transfers the generated
–l0V to C3. Simultaneously, the positive side of
capacitor C 1 is switched to +5V and the nega-
tive side is connected to ground.
Phase 3
— VDD charge storage — The third phase of
the clock is identical to the first phase — the
charge transferred in C1 produces –5V in the
negative terminal of C1, which is applied to the
negative side of capacitor C2. Since C2+ is at
+5V, the voltage potential across C2 is l0V.
+10V
a) C2+
GND
GND
b) C2–
–10V
Figure 1. Charge Pump Waveform
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP385E_100_030811
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V
= +5V
CC
C
+5V
4
+
–
+
V
V
Storage Capacitor
Storage Capacitor
DD
+
–
+
–
C
C
2
1
–
SS
C
–5V
–5V
3
Figure 2. Charge Pump — Phase 1
V
CC
= +5V
C
4
+
–
V
V
Storage Capacitor
DD
+
+
C
1
C
2
–
–
+
–
Storage Capacitor
SS
C
3
-10V
Figure 3. Charge Pump — Phase 2
V
= +5V
CC
C
+5V
4
+
–
V
V
Storage Capacitor
Storage Capacitor
DD
+
–
+
–
C
C
2
1
+
–
SS
C
–5V
–5V
3
Figure 4. Charge Pump — Phase 3
V
CC
= +5V
+10V
+
C
4
+
–
+
V
Storage Capacitor
DD
+
–
C
1
C
2
–
–
V
SS
Storage Capacitor
C
3
Figure 5. Charge Pump — Phase 4
Shutdown (ON/OFF)
The SP385E has a shut-down/standby mode
to conserve power in battery-powered systems.
To activate the shutdown mode, which stops
the operation of the charge pump, a logic "0" is
applied to the appropriate control line. The shut-
down mode is controlled on the SP385E by a
logic "0" on the ON/OFF control line (pin 18 for
the SOIC and pin 20 for the SSOP packages);
this puts the transmitter outputs in a tri-state
mode.
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP385E_100_030811
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most of the ESD current when the ESD source
is applied to the connector pins. The test circuit
for IEC61000-4-2 is shown on Figure 7. There
are two methods within IEC61000-4-2, the Air
Discharge method and the Contact Discharge
method.
ESD TOLERANCE
The SP385E device incorporates ruggedized
ESD cells on all driver output and receiver input
pins. The ESD structure is improved over our
previous family for more rugged applications
and environments sensitive to electro-static dis-
chargesandassociatedtransients.Theimproved
ESD tolerance is at least +15kV without damage
nor latch-up.
With the Air Discharge Method, an ESD voltage
is applied to the equipment under test (EUT)
throughair. Thissimulatesanelectricallycharged
person ready to connect a cable onto the rear of
the system only to find an unpleasant zap just
before the person touches the back panel. The
high energy potential on the person discharges
through an arcing path to the rear panel of the
system before he or she even touches the sys-
tem. This energy, whether discharged directly
or through air, is predominantly a function of
the discharge current rather than the discharge
voltage. Variables with an air discharge such as
approach speed of the object carrying the ESD
potential to the system and humidity will tend to
change the discharge current. For example, the
rise time of the discharge current varies with the
approach speed.
There are different methods of ESD testing ap-
plied:
a) MIL-STD-883, Method 3015.7
b) IEC61000-4-2 Air-Discharge
c) IEC61000-4-2 Direct Contact
The Human Body Model has been the generally
accepted ESD testing method for semi-con-
ductors. This method is also specified in
MIL-STD-883, Method 3015.7 for ESD testing.
The premise of this ESD test is to simulate the
human body’s potential to store electro-static
energy and discharge it to an integrated circuit.
The simulation is performed by using a test
model as shown in Figure 6. This method will
test the IC’s capability to withstand an ESD
transient during normal handling such as in
manufacturing areas where the IC's tend to be
handled frequently.
The Contact Discharge Method applies the ESD
current directly to the EUT. This method was
devised to reduce the unpredictability of the ESD
arc. The discharge current rise time is constant
sincetheenergyisdirectlytransferredwithoutthe
air-gap arc. In situations such as hand held sys-
tems, the ESD charge can be directly discharged
to the equipment from a person already holding
the equipment. The current is transferred on to
the keypad or the serial port of the equipment
directly and then travels through the PCB and
finally to the IC.
The IEC-61000-4-2, formerly IEC801-2, is gen-
erally used for testing ESD on equipment and
systems. For system manufacturers, they must
guarantee a certain amount of ESD protection
since the system itself is exposed to the outside
environment and human presence. The premise
with IEC61000-4-2 is that the system is required
to withstand an amount of static electricity when
ESD is applied to points and surfaces of the
equipment that are accessible to personnel dur-
ing normal usage. The transceiver IC receives
R
S
R
C
SW1
SW2
Device
C
DC Power
Source
S
Under
Test
Figure 6. ESD Test Circuit for Human Body Model
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP385E_100_030811
10
Contact-Discharge Model
R
R
R
V
C
S
SW1
SW2
Device
Under
Test
C
DC Power
Source
S
and
add up to 330Ω for IEC61000-4-2.
R
V
R
S
Figure 7. ESD Test Circuit for IEC61000-4-2
The circuit models in Figures 6 and 7 represent
the typical ESD testing circuit used for all three
methods. The CS is initially charged with the DC
power supply when the first switch (SW1) is on.
Now that the capacitor is charged, the second
switch (SW2) is on while SW1 switches off. The
voltage stored in the capacitor is then applied
through RS, the current limiting resistor, onto the
device under test (DUT). In ESD tests, the SW2
switch is pulsed so that the device under test
receives a duration of voltage.
30A
15A
0A
t = 0ns
t = 30ns
For the Human Body Model, the current limiting
resistor (RS) and the source capacitor (CS) are
1.5kΩan100pF,respectively. ForIEC-61000-4-2,
thecurrentlimitingresistor(RS)andthesourceca-
pacitor (CS) are 330Ω an 150pF, respectively.
t →
Figure 8. ESD Test Waveform for IEC61000-4-2
The higher CS value and lower RS value in the
IEC61000-4-2 model are more stringent than the
Human Body Model. The larger storage capaci-
tor injects a higher voltage to the test point when
SW2 is switched on. The lower current limiting
resistor increases the current charge onto the
test point.
DEVICE PIN
TESTED
HUMAN BODy
MODEL
IEC61000-4-2
Air Discharge Direct Contact
Level
Driver Outputs
Receiver Inputs
+15kV
+15kV
+15kV
+15kV
+8kV
+8kV
4
4
Table 1. Transceiver ESD Tolerance Levels
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP385E_100_030811
11
PACKAGE: 20 PIN SSOP
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP385E_100_030811
12
PACKAGE: 18 PIN WSOIC
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP385E_100_030811
13
ORDERING INFORMATION
Part Number
Temp. Range
0C to +70C
0C to +70C
0C to +70C
0C to +70C
-40C to +85C
-40C to +85C
-40C to +85C
-40C to +85C
Package
SP385ECA-L
20 Pin SSOP
20 Pin SSOP
18 Pin WSOIC
18 Pin WSOIC
20 Pin SSOP
20 Pin SSOP
18 Pin WSOIC
18 Pin WSOIC
SP385ECA-L/TR
SP385ECT-L
SP385ECT-L/TR
SP385EEA-L
SP385EEA-L/TR
SP385EET-L
SP385EET-L/TR
For Tape and Reel option add "/TR", Example: SP385EET-L/TR.
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP385E_100_030811
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REVISION HISTORY
DATE
REVISION DESCRIPTION
03/08/05
03/08/11
--
Legacy Sipex Datasheet
1.0.0
Convert to Exar Format, update ordering information and
change ESD specification to IEC61000-4-2
Notice
EXAR Corporation reserves the right to make changes to any products contained in this publication in order to improve design, performance or reli-
ability. EXAR Corporation assumes no representation that the circuits are free of patent infringement. Charts and schedules contained herein are
only for illustration purposes and may vary depending upon a user's specific application. While the information in this publication has been carefully
checked; no responsibility, however, is assumed for inaccuracies.
EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can
reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for
use in such applications unless EXAR Corporation receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has been
minimized ; (b) the user assumes all such risks; (c) potential liability of EXAR Corporation is adequately protected under the circumstances.
Copyright 2011 EXAR Corporation
Datasheet March 2011
For technical support please email Exar's Serial Technical Support group at : serialtechsupport@exar.com
Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited.
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP385E_100_030811
15
相关型号：
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Line Transceiver, 2 Func, 2 Driver, 2 Rcvr, CMOS, PDSO20, LEAD FREE, PLASTIC, MO-153AE, SSOP-20
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SP385ECA-L/TR
Line Transceiver, 2 Func, 2 Driver, 2 Rcvr, CMOS, PDSO20, LEAD FREE, PLASTIC, MO-153AE, SSOP-20
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