®
SP207E–SP213E
+5V High Performance RS232 Transceivers
s
s
s
s
s
s
s
s
s
s
Single +5V Supply Operation
0.1µF External Charge Pump Capacitors
Typical 230kbps Transmission Rates
Standard SOIC and SSOP Packages
Lower Supply Current Than Competition
(typical 3mA)
1µA Shutdown Mode
WakeUp Feature in Shutdown Mode
Tri–State Receiver Outputs
Meets All EIA-232 and ITU V.28
Specifications
Improved ESD Specifications:
+15kV Human Body Model
+15kV IEC1000-4-2 Air Discharge
+8kV IEC1000-4-2 Contact Discharge
DESCRIPTION
The
SP200E Series
are enhanced multi–channel RS-232 line transceivers with improved
electrical performance. The
SP200E
family is pin-to-pin compatible with our previous SP200
family as well as popular industry standards. As with the orignal SP200 family, all models in this
Series feature low–power CMOS construction and
Sipex–patented
(5,306,954) on-board
charge pump circuitry to generate the
±10V
RS-232 voltage levels, using 0.1µF charge pump
capacitors to save board space and reduce circuit cost. The
SP211E
and
SP213E
models feature
a low–power shutdown mode, which reduces power supply drain to 1µA. Enhancements include
lower power supply current at 3mA typical (no load) and superior ESD performance. The ESD
tolerance has been improved on this family to over
±15kV
for both Human Body Model and
IEC1000-4-2 Air Discharge test methods.
Number of RS232
Model Drivers
Receivers
SP207E
5
3
SP208E
4
4
SP211E
4
5
SP213E
4
5
Table 1. Model Selection Table
No. of Receivers
No. of External
Active in Shutdown 0.1µF Capacitors
0
4
0
4
0
4
2
4
Shutdown WakeUp TTL Tri–State
No
No
No
No
No
No
Yes
No
Yes
Yes
Yes
Yes
SP207EDS/09
SP207E Series High Performance Transceivers
© Copyright 2000 Sipex Corporation
1
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional
operation of the device at these 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.
V
CC
.................................................................. +6V
V
+
....................................... (V
CC
– 0.3V) to +13.2V
V
–
................................................................ 13.2V
Input Voltages
T
IN
.......................................... –0.3V to (V
CC
+0.3V)
R
IN
................................................................
±20V
Output Voltages
T
OUT
................................ (V
+
, +0.3V) to (V
–
, –0.3V)
R
OUT
....................................... –0.3V to (V
CC
+0.3V)
Short Circuit Duration on T
OUT
.............. Continuous
Power Dissipation Per Package
24-pin SSOP (derate 11.2mW/
o
C above +70
o
C)....900mW
24-pin PDIP (derate 15.9mW/
o
C above +70
o
C)....1300mW
24-pin SOIC (derate 12.5mW/
o
C above +70
o
C)...1000mW
28-pin SSOP (derate 11.2mW/
o
C above +70
o
C)....900mW
28-pin SOIC (derate 12.7mW/
o
C above +70
o
C)...1000mW
SPECIFICATIONS
.
V
CC
at nominal ratings; 0.1µF charge pump capacitors; T
MIN
to T
MAX
, unless otherwise noted.
PARAMETER
TTL INPUTS
Logic Threshold
V
IL
V
IH
Logic Pullup Current
Maximum Transmssion Rate
TTL OUTPUTS
Compatibility
V
OL
V
OH
Leakage Current
MIN.
TYP.
MAX.
UNIT
CONDITIONS
T
IN
, EN, SD
0.8
2.0
120
15
230
TTL/CMOS
0.4
3.5
0.05
+10
200
Volts
Volts
µA
kbps
T
IN
= 0V
C
L
= 1000pF, R
L
= 3KΩ
Volts
Volts
µA
0V
≤
R
OUT
≤
V
CC
; SP211 EN = 0V;
SP213 EN = V
CC
T
A
= +25°C
I
OUT
= 3.2mA; V
CC
= +5V
I
OUT
= –1.0mA
RS232 OUTPUT
Output Voltage Swing
+5
+7
+25
+15
1.2
1.7
0.5
5
1.5
0.5
2.8
1.0
7
Volts
Ω
mA
Volts
Volts
Volts
Volts
kΩ
µs
µs
V/µs
µs
ns
ns
Output Resistance
300
Output Short Circuit Current
RS232 INPUT
Voltage Range
–15
Voltage Threshold
Low
0.8
High
Hysteresis
0.2
Resistance
3
DYNAMIC CHARACTERISTICS
Driver Propagation Delay
Receiver Propagation Delay
Instantaneous Slew Rate
Transition Time
Output Enable Time
Output Disable Time
All transmitter outputs loaded
with 3KΩ to ground
V
CC
= 0V; V
OUT
= +2V
Infinite duration, V
OUT
= 0V
V
CC
= 5V, T
A
= +25°C
V
CC
= 5V, T
A
= +25°C
V
CC
= +5V
V
IN
=+15V; T
A
= +25°C
TTL–to–RS-232
RS-232–to–TTL
C
L
= 50pF, R
L
= 3–7KΩ;
T
A
= +25°C; from +3V
C
L
= 2,500pF, R
L
= 3KΩ;
measured from +3V to –3V
or –3V to +3V
1.5
30
1.5
400
250
SP207EDS/09
SP207E Series High Performance RS232 Transceivers
© Copyright 2000 Sipex Corporation
2
SPECIFICATIONS
V
CC
at nominal ratings; 0.1µF charge pump capacitors; T
MIN
to T
MAX
, unless otherwise noted.
PARAMETER
POWER REQUIREMENTS
V
CC
SP207
All other parts
I
CC
MIN.
TYP.
MAX.
UNIT
CONDITIONS
4.75
4.50
5.00
5.00
3
15
1
5.25
5.50
6
Volts
Volts
mA
mA
µA
°C
°C
°C
T
A
= +25°C
No load; V
CC
=
±10%
All transmitters R
L
= 3KΩ
T
A
= +25°C
Shutdown Current
10
ENVIRONMENTAL AND MECHANICAL
Operating Temperature
Commercial, –C
0
+70
Extended, –E
–40
+85
Storage Temperature
–65
+125
Package
–A
Shrink (SSOP) small outline
–T
Wide (SOIC) small outline
–P
Narrow (PDIP) Plastic Dual-In-Line
Transmitter Output @ 120kbps
R
L
=3KΩ, C
L
=1,000pF
Transmitter Output @ 120kbps
R
L
=3KΩ, CL=2,500pF
Transmitter Output @ 240kbps
R
L
=3KΩ, C
L
=1,000pF
Transmitter Output @ 240kbps
R
L
=3KΩ, C
L
=2,500pF
SP207EDS/09
SP207E Series High Performance Transceivers
© Copyright 2000 Sipex Corporation
3
PINOUT
T
3
OUT
T
1
OUT
T
2
OUT
R
1
IN
R
1
OUT
T
2
IN
T
1
IN
GND
V
CC
C
1
+
V+
C
1
–
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
T
4
OUT
R
2
IN
R
2
OUT
T
5
IN
T
5
OUT
T
4
IN
T
3
IN
R
3
OUT
R
3
IN
V–
C
2
–
C
2
+
T
2
OUT
T
1
OUT
R
2
IN
R
2
OUT
T
1
IN
R
1
OUT
R
1
IN
GND
V
CC
C
1
+
V+
C
1
–
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
T
3
OUT
R
3
IN
R
3
OUT
T
4
IN
T
4
OUT
T
3
IN
T
2
IN
R
4
OUT
R
4
IN
V–
C
2
–
C
2
+
SP207E
SP208E
19
18
17
16
15
14
13
19
18
17
16
15
14
13
T
3
OUT
T
1
OUT
T
2
OUT
R
2
IN
R
2
OUT
T
2
IN
T
1
IN
R
1
OUT
R
1
IN
GND
V
CC
C
1
+
V+
C
1
–
1
2
3
4
5
6
28
27
26
25
24
23
T
4
OUT
R
3
IN
R
3
OUT
SHUTDOWN (SD)
EN
R
4
IN
R
4
OUT
T
4
IN
T
3
IN
R
5
OUT
R
5
IN
V–
C
2
–
C
2
+
T
3
OUT
T
1
OUT
T
2
OUT
R
2
IN
R
2
OUT
T
2
IN
T
1
IN
R
1
OUT
R
1
IN
GND
V
CC
C
1
+
V+
C
1
–
1
2
3
4
5
6
28
27
26
25
24
23
T
4
OUT
R
3
IN
R
3
OUT
SHUTDOWN (SD)
EN
R
4
IN
R
4
OUT
T
4
IN
T
3
IN
R
5
OUT
R
5
IN
V–
C
2
–
C
2
+
SP211E
SP213E
7
8
9
10
11
12
13
14
22
21
20
19
18
17
16
15
7
8
9
10
11
12
13
14
22
21
20
19
18
17
16
15
SP207EDS/09
SP207E Series High Performance RS232 Transceivers
© Copyright 2000 Sipex Corporation
4
FEATURES
As in the original RS-232 multi-channel
products, the
SP207E Series
multi–channel
RS-232 line transceivers provide a variety of
configurations to fit most communication
needs, especially those applications where +12V
is not available. All models in this Series feature
low–power CMOS construction and
SIPEX–
proprietary on-board charge pump circuitry to
generate the +10V RS-232 voltage levels. The
ability to use 0.1µF charge pump capacitors
saves board space and reduces circuit cost.
Different models within the Series provide
different driver/receiver combinations to
match any application requirement.
The
SP211
and
SP213E
models feature a low–
power shutdown mode, which reduces power
supply drain to 1µA. The
SP213E
includes a
Wake-Up function which keeps two receivers
active in the shutdown mode, unless disabled by
the EN pin.
The family is available in 28–pin SO (wide) and
SSOP (shrink) small outline packages. Devices
can be specified for commercial (0°C to +70°C)
and industrial/extended (–40°C to +85°C)
operating temperatures.
THEORY OF OPERATION
The
SP207E Series
devices are made up of
three basic circuit blocks — 1) transmitter/
driver, 2) receiver and 3) the
SIPEX–
proprietary charge pump. Each model within
the Series incorporates variations of these
circuits to achieve the desired configuration
and performance.
Charge–Pump
The charge pump is a
Sipex–patented
design
(5,306,954) and uses a unique approach
compared to older less–efficient designs. The
charge pump still requires four external capacitors,
but uses a four–phase voltage shifting technique
to attain symmetrical 10V power supplies.
Figure 3a
shows the waveform found on the
positive side of capcitor C
2
, and
Figure 3b
shows the negative side of capcitor C
2
. There is
a free–running oscillator that controls the four
phases of the voltage shifting. A description of
each phase follows.
Phase 1
— V
SS
charge storage —During this phase of the
clock cycle, the positive side of capacitors C
1
and C
2
are initially charged to +5V. C
l+
is then
switched to ground and the charge in C
1–
is
transferred to C
2–
. Since C
2+
is connected to
+5V, the voltage potential across capacitor C
2
is
now 10V.
Phase 2
— V
SS
transfer — Phase two of the clock
connects the negative terminal of C
2
to the V
SS
storage capacitor and the positive terminal of C
2
to ground, and transfers the generated –l0V to
C
3
. Simultaneously, the positive side of
capacitor C
1
is switched to +5V and the negative
side is connected to ground.
Phase 3
— V
DD
charge storage — The third phase of the
clock is identical to the first phase — the charge
transferred in C
1
produces –5V in the negative
terminal of C
1
, which is applied to the negative
side of capacitor C
2
. Since C
2+
is at +5V, the
voltage potential across C
2
is l0V.
V
CC
= +5V
+5V
C
1
+
–
C
4
+
–
+
C
2
+
–
–
V
DD
Storage Capacitor
V
SS
Storage Capacitor
–5V
–5V
C
3
Figure 1. Charge Pump — Phase 1
SP207EDS/09
SP207E Series High Performance Transceivers
© Copyright 2000 Sipex Corporation
5
