SP207 SIPEX [Sipex Corporation], SP207 Datasheet - Page 5

• Manufacturer Part Number: SP207
• Description: +5V High-Speed RS-232 Transceivers with 0.1mF Capacitors
• Manufacturer: SIPEX [Sipex Corporation]

Date:05/26/2005
FEATURES…
The SP200 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 com-
binations to match any application requirement.
The SP200, SP206, SP207B, SP211 and SP213
models feature a low–power shutdown mode,
which reduces power supply drain to 1µA. The
WakeUp function keeps the receivers active in
T
R
R
T
T
3
1
2
2
1
GND
OUT
OUT
OUT
R
OUT
OUT
R
T
T
V
C
C
2
2
1
1
V +
CC
IN
IN
IN
IN
1
1
+
–
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14
1
2
3
4
5
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9
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25
24
23
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21
20
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16
T
R
R
SHUTDOWN (SD)
EN
R
R
T
T
R
R
V –
C
C
4
4
3
3
3
4
4
5
5
2
2
IN
IN
IN
OUT
IN
OUT
OUT
IN
–
+
OUT
T
R
R
T
T
3
1
2
2
1
R
R
GND
OUT
OUT
OUT
OUT
T
T
OUT
V
C
C
2
2
1
1
V +
CC
IN
IN
IN
IN
1
1
+
–
+5V High-Speed RS232 Transceivers
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14
1
2
3
4
5
6
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8
9
5
the shutdown mode, unless disabled by the EN
pin. Models with a “B” suffix are equipped with
the WakeUp function.
Models in the Series are available in 28–pin SO
(wide) and SSOP (shrink) small outline pack-
ages. Devices can be specified for commercial
(0°C to +70°C) and industrial/extended (–40°C
to +85°C) operating temperatures.
THEORY OF OPERATION
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
15
28
27
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25
24
23
22
21
20
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16
T
R
R
SHUTDOWN (SD)
EN
R
R
T
T
R
R
V –
C
C
4
4
3
3
3
4
4
5
5
2
2
IN
IN
IN
OUT
IN
OUT
OUT
IN
–
+
T
OUT
R
R
T
T
3
1
2
2
1
GND
OUT
OUT
OUT
R
OUT
OUT
R
T
T
V
C
C
2
2
1
1
V +
CC
IN
IN
IN
IN
1
1
+
–
10
11
12
13
14
1
2
3
4
5
6
7
8
9
PACKAGE: PINOUTS
© Copyright 2005 Sipex Corporation
15
28
27
26
25
24
23
22
21
20
19
18
17
16
T
R
R
SHUTDOWN (SD)
EN
R
R
T
T
R
R
V –
C
C
4
4
3
3
3
4
4
5
5
2
2
IN
IN
IN
OUT
IN
OUT
OUT
IN
–
+
OUT