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PDF SP3239E Data sheet ( Hoja de datos )
| Número de pieza | SP3239E | |
| Descripción | Intelligent +3.0V to +5.5V RS-232 Transceiver | |
| Fabricantes | Exar | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SP3239E (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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SP3239E
Intelligent +3.0V to +5.5V RS-232 Transceiver
FEATURES
■ Meets true EIA/TIA-232-F Standards
from a +3.0V to +5.5V power supply
■ Interoperable with EIA/TIA-232 and
adheres to EIA/TIA-562 down to a +2.7V
power source
■ Minimum 250Kbps data rate under load
■ Regulated Charge Pump Yields Stable
RS-232 Outputs Regardless of VCC
Variations
■ Enhanced ESD Specifications:
+15kV Human Body Model
+15kV IEC61000-4-2 Air Discharge
+8kV IEC61000-4-2 Contact Discharge
C2+ 1
GND 2
C2- 3
V- 4
T1OUT 5
T2OUT 6
T3OUT 7
R1IN 8
R2IN 9
T4OUT 10
R3IN 11
T5OUT 12
NC 13
SHUTDOWN 14
SP3239E
28 C1+
27 V+
26 VCC
25 C1-
24 T1IN
23 T2IN
22 T3 IN
21 R1OUT
20 R2OUT
19 T4IN
18 R3OUT
17 T5IN
16 R1OUT
15 NC
Now Available in Lead Free Packaging
DESCRIPTION
The SP3239E device is an RS-232 transceiver solution intended for portable or hand-held applications
such as notebook and palmtop computers. The SP3239E uses an internal high-efficiency, charge-pump
power supply that requires only 0.1µF capacitors in 3.3V operation. This charge pump and Exar's driver
architecture allow the SP3239E device to deliver compliant RS-232 performance from a single power
supply ranging from +3.0V to +5.5V. The SP3239E is a 5-driver / 3-receiver device that is ideal for laptop
/ notebook computer and PDA applications. The SP3239E includes one complementary receiver that
remains alert to monitor an external device's Ring Indicate signal while the device is shutdown.
Device
SP3223E
SP3243E
SP3238E
SP3239E
SP3249E
Power
Supplies
+3.0V to +5.5V
+3.0V to +5.5V
+3.0V to +5.5V
+3.0V to +5.5V
+3.0V to +5.5V
RS-232
Drivers
2
3
5
5
5
RS-232
Receivers
2
5
3
3
3
External
Components
4 Capacitors
4 Capacitors
4 Capacitors
4 Capacitors
4 Capacitors
Auto
On-Line
Circuitry
YES
YES
YES
NO
NO
SELECTION TABLE
TTL 3-State
# of
Pins
YES
YES
YES
YES
NO
20
28
28
28
24
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP3239E_100_020111
1 page  
NAME
FUNCTION
C2+ Positive terminal of the symmetrical charge-pump capacitor C2.
GND
Ground.
C2- Negative terminal of the symmetrical charge-pump capacitor C2.
V- Regulated -5.5V output generated by the charge pump.
T1OUT
T2OUT
T3OUT
R1IN
R2IN
T4OUT
R3IN
T5OUT
NC
RS-232 Driver Output.
RS-232 Driver Output.
RS-232 Driver Output.
RS-232 receiver input.
RS-232 receiver input.
RS-232 Driver Output.
RS-232 receiver input.
RS-232 Driver Output.
No connect.
SHUTDOWN Apply logic LOW to shut down drivers and charge pump.
NC No Connect or tie HIGH for normal operation.
R1OUT
T5IN
R3OUT
T4IN
R2OUT
R1OUT
T3IN
T2IN
T1IN
C1-
Non-Inverting receiver - 1 output, active in shutdown.
TTL/CMOS driver input.
TTL/CMOS receiver output.
TTL/CMOS driver input.
TTL/CMOS receiver output.
TTL/CMOS receiver output.
TTL/CMOS driver input.
TTL/CMOS driver input.
TTL/CMOS driver input.
Negative terminal of the symmetrical charge-pump capacitor C1.
Vcc +3.0V to +5.5V supply voltage.
V+ Regulated +5.5V output generated by the charge pump.
C1+ Positive terminal of the symmetrical charge-pump capacitor C1.
Table 1. Device Pin Description
PIN NUMBER
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP3239E_100_020111
5 Page 
VCC
+
C5 0.1µF
+ 28 C1+
C1 0.1µF
25 C1-
+ 1 C2+
C2 0.1µF
3 C2-
26
VCC
SP3239E
V+ 27
+
C3 0.1µF
V- 4
16 R1OUT
C4 0.1µF
+
21 R1OUT
R1IN 8
20 R2OUT
5kΩ
R2IN 9
18 R3OUT
5kΩ
R3IN 11
5kΩ
24 T1IN
T1OUT 5
23 T2IN
T2OUT 6
22 T3IN
T3OUT 7
19 T4IN
T4OUT 10
17 T5IN
VCC 14 SHUTDOWN
T5OUT 12
DB-9
Connector
GND
2
DB-9 Connector Pins:
1. Received Line Signal Detector 6. DCE Ready
2. Received Data
7. Request to Send
3. Transmitted Data
8. Clear to Send
4. Data Terminal Ready
9. Ring Indicator
5. Signal Ground (Common)
6
7
8
9
1
2
3
4
5
Figure 15. Circuit for the connectivity of the SP3239E with a DB-9 connector
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
11
SP3239E_100_020111
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet SP3239E.PDF ] | |
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