®
SP207H/SP211H
+5V High–Speed RS-232 Transceivers
s
s
s
s
s
s
s
s
s
Single 5V Supply Operation
0.1µF External Charge Pump Capacitors
460kbps Minimum Data Rate
Standard SOIC and SSOP Packages
SP207H - Five (5) Drivers and Three (3)
Receivers
SP211H - Four (4) Drivers and Five (5)
Receivers
1µA Shutdown Mode
WakeUp Feature in Shutdown Mode
Tri–State Receiver Outputs
Ideal for V.34 and High Speed RS-232
Applications
DESCRIPTION…
The
SP207H
and
SP211H
are multi–channel RS-232 line transceivers configured to fit most
communication needs. The "H" series is based on
Sipex's SP200
Series transceivers and has
been enhanced for speed. The data rate is improved to over 460kbps which easily meets the
230.4kbps data rates for V.34. The
SP207H
and
SP211H
use the same on-board charge pump
to provide
±10V
voltage levels, using 0.1µF charge pump capacitors to save board space and
reduce circuit cost. The
SP207HB, SP211H
and
SP211HB
feature a low–power shutdown
mode, which reduces power supply drain to 1µA. A WakeUp function keeps the receivers active
in the shutdown mode (SP207HB and
SP211HB
only).
+5V INPUT
9
0.1µF
6.3V
10
0.1µF
6.3V
+
C
1
+
V
CC
V+
11
0.1µF
+ 6.3V
0.1µF
16V
+
+5V INPUT
11
0.1µF
6.3V
12
0.1µF
6.3V
+
C
1
+
V
CC
V+
13
0.1µF
+ 6.3V
0.1µF
16V
+
12 C –
1
+
13 C +
2
V–
15
14 C –
1
+
15 C +
2
V–
17
0.1µF
16V
SP207
14
C
2
–
400KOHM
0.1µF
16V
SP211
16
C
2
–
400KOHM
TTL/CMOS INPUTS
T
1
IN
7
400KOHM
T
1
2
T
1
OUT
400KOHM
T
2
IN
6
400KOHM
T
3
IN
20
400KOHM
T
4
IN
21
T
4
28
T
4
OUT
T
3
1
T
3
OUT
T
2
3
T
2
OUT
TTL/CMOS INPUTS
T
2
IN
6
400KOHM
T
2
3
T
2
OUT
T
3
IN
18
400KOHM
T
3
1
T
3
OUT
T
4
IN
19
400KOHM
T
4
24
T
4
OUT
RS-232 OUTPUTS
R
1
OUT
8
R
1
5KOHM
R
2
5KOHM
R
3
5KOHM
R
4
5KOHM
R
5
5KOHM
9
R
1
IN
T
5
IN
T
5
T
5
OUT
R
2
OUT
R
2
IN
TTL/CMOS OUTPUTS
RS-232 INPUTS
R
1
OUT
5
R
1
5KOHM
R
2
5KOHM
R
3
5KOHM
8
GND
4
R
1
IN
R
3
OUT
26
27
R
3
IN
R
2
OUT
22
23
R
4
OUT
22
23
R
4
IN
R
2
IN
R
3
OUT
17
16
R
5
OUT
EN
19
24
18
R
5
IN
R
3
IN
25
SD
10
GND
Number of RS-232
Model
Drivers Receivers
SP207H
5
3
SP207HB
5
3
SP211H
4
5
SP211HB
4
5
Table 1. Model Selection Table
TGoddard/SP207H/9614R0
No. of Receivers
No. of External
Active in Shutdown 0.1
µ
F Capacitors
0
4
3
4
0
4
5
4
Shutdown WakeUp TTL Tri–State
No
No
No
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
SP207H/SP211H High–Speed Transceivers
© Copyright 2000 Sipex Corporation
1
RS-232 INPUTS
21
20
TTL/CMOS OUTPUTS
5
4
RS-232 OUTPUTS
T
1
IN
7
T
1
2
T
1
OUT
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
Tx
IN
................................................................. –0.3V to (V
CC
+0.3V)
Rx
IN
.......................................................................
±30V
at
≤100mA
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
Plastic DIP .......................................................................... 375mW
(derate 7mW/°C above +70°C)
Small Outline ...................................................................... 375mW
(derate 7mW/°C above +70°C)
SPECIFICATIONS
V
CC
at nominal ratings; 0.1µF charge pump capacitors; T
MIN
to T
MAX
, unless otherwise noted.
PARAMETER
TTL INPUTS (DRIVER)
Logic Threshold
V
IL
V
IH
Logic Pullup Current
Data Rate
TTL OUTPUTS (RECEIVER)
Compatibility
V
OL
V
OH
Leakage Current
RS-232 OUTPUT (DRIVER)
Output Voltage Swing
MIN.
TYP.
MAX.
UNIT
CONDITIONS
T
IN
, EN, SD
0.8
2.0
460
1.5
600
TTL/CMOS
0.4
3.5
0.05
±10
10.0
Volts
Volts
µA
kbps
T
IN
= 0V
C
L
= 1,000pF, R
L
= 3kΩ
R
OUT
I
OUT
= 3.2mA; V
CC
= +5V
I
OUT
= –1.0mA
Volts
Volts
µA
EN = V
CC
; 0V
≤
R
OUT
≤
V
CC
;
T
A
= +25°C
±5
±7
±25
+15
10.0
2.4
1.0
7
Volts
Ohms
mA
Volts
µA
Volts
Volts
Volts
kΩ
kbps
µs
µs
V/µs
V/µs
Power-Off Output Resistance
300
Output Short Circuit Current
RS-232 INPUT (RECEIVER)
Voltage Range
–15
Logic Pull Down Current
Voltage Threshold
V
IL
0.8
V
IH
Hysteresis
0.2
Resistance
3
Data Rate
460
DYNAMIC CHARACTERISTICS
Propagation Delay
Instantaneous Slew Rate
Transition Region Slew Rate
All transmitter outputs loaded
with 3kΩ to ground
V
CC
= 0V; V
OUT
=
±2V
Infinite duration
3.0
1.2
1.7
0.5
5
600
1.0
1.5
60
5
T
A
= +25°C
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
C
L
= 1,000pF, R
L
= 3kΩ;
measured from +3V to
–3V or –3V to +3V
TGoddard/SP207H/9614R0
SP207H/SP211H High–Speed 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
Output Enable Time
Output Disable Time
POWER REQUIREMENTS
V
CC
I
CC
MIN.
TYP.
400
250
MAX.
UNIT
ns
ns
CONDITIONS
4.75
5.00
5
20
1
5.25
10
Volts
mA
mA
µA
No load; V
CC
= 5V; T
A
= +25°C
All transmitters R
L
= 3kΩ; T
A
= +25°C
T
A
= +25°C
Shutdown Current
10
ENVIRONMENTAL AND MECHANICAL
Operating Temperature
Commercial, –C
0
+70
°C
Extended, –E
–40
+85
°C
Storage Temperature
–65
+125
°C
Package
–A
Shrink (SSOP) small outline
–T
Wide (SOIC) small outline
TGoddard/SP207H/9614R0
SP207H/SP211H High–Speed 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
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
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
NC
T
5
IN
SHUTDOWN (SD)
EN
T
5
OUT
NC
T
4
IN
T
3
IN
R
3
OUT
R
3
IN
V–
C
2
–
C
2
+
SP207
6
7
8
9
10
11
12
19
18
17
16
15
14
13
SP207B
7
8
9
10
11
12
13
14
22
21
20
19
18
17
16
15
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
+
SP211B
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
FEATURES…
The
SP207H
and
SP211H
line transceivers
provide a variety of configurations to fit most
communication needs, especially those applica-
tions where
±12V
is not available. Both prod-
ucts 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.
The
SP207HB
and
SP211H
models feature a
low–power shutdown mode, which reduces
power supply drain to 1µA. The
SP207HB
and
SP211HB
are equipped with the WakeUp func-
tion. The WakeUp function keeps the receivers
active in the shutdown mode, unless disabled by
the EN pin.
TGoddard/SP207H/9614R0
SP211
THEORY OF OPERATION
The
SP207H
and
SP211H
are made up of three
basic circuit blocks — 1) transmitter/driver, 2)
receiver and 3) the
Sipex–proprietary
charge
pump.
Charge–Pump
The charge pump is a
Sipex–patented
design
(5,306,954) and uses a unique approach com-
pared 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
SP207H/SP211H High–Speed Transceivers
© Copyright 2000 Sipex Corporation
4
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
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 con-
nects 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 capaci-
tor 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
V
CC
= +5V
voltage potential across C
2
is l0V.
Phase 4
— V
DD
transfer — The fourth phase of the clock
connects the negative terminal of C
2
to ground,
and transfers the generated l0V across C
2
to C
4
,
the V
DD
storage capacitor. Again, simultaneously
with this, the positive side of capacitor C
1
is
switched to +5V and the negative side is con-
nected to ground, and the cycle begins again.
Since both V
+
and V
–
are separately generated
from V
CC
; 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
–
compared to V
+
due to the
inherent inefficiencies in the design.
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.
Transmitter/Driver
The drivers are inverting transmitters which have
been improved for speed over the
SP200 Series.
The transmitters accept either TTL or CMOS
inputs and output the RS-232 signals at data rates
over 400kbps. Typically, the RS-232 output volt
C
4
+
–
+
C
1
+
–
C
2
+
–
–
V
DD
Storage Capacitor
V
SS
Storage Capacitor
–10V
C
3
Figure 2. Charge Pump — Phase 2
TGoddard/SP207H/9614R0
SP207H/SP211H High–Speed Transceivers
© Copyright 2000 Sipex Corporation
5
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