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PDF SP3232EU Data sheet ( Hoja de datos )
| Número de pieza | SP3232EU | |
| Descripción | RS-232 Transceivers | |
| Fabricantes | Exar | |
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Hay una vista previa y un enlace de descarga de SP3232EU (archivo pdf) en la parte inferior de esta página. Total 20 Páginas | ||
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SP3222EU/SP3232EU
3.3V, 1000 kbps RS-232 Transceivers
FEATURES
■ Meets true EIA/TIA-232-F Standards
from a +3.0V to +5.5V power supply
■ Minimum 1000kbps Data Rate
■ 1µA Low Power Shutdown with
Receivers active (SP3222EU)
■ Interoperable with RS-232 down to a
+2.7V power source
■ Enhanced ESD Specifications:
+15kV Human Body Model
+15kV IEC61000-4-2 Air Discharge
+8kV IEC61000-4-2 Contact Discharge
■ Ideal for Handheld, Battery Operated
Applications
EN 1
C1+ 2
18 SHDN
17 VCC
V+ 3
16 GND
C1- 4
15 T1OUT
C2+ 5 SP3222EU 14 R1IN
C2- 6
13 R1OUT
V- 7
12 T1IN
T2OUT 8
R2IN 9
11 T2IN
10 R2OUT
nSOIC
Now Available in Lead Free Packaging
DESCRIPTION
The SP3222EU and the SP3232EU are 2 driver, 2 receiver RS-232 transceiver solutions
intended for portable or hand-held applications such as notebook or palmtop computers.
Their data transmission rate of 1000 kbps meets the demands of high speed RS-232 ap-
plications. The SP3222EU/SP3232EU series has a high-efficiency, charge-pump power
supply that requires only 0.1µF capacitors in 3.3V operation. This charge pump allows the
SP3222EU/SP3232EU series to deliver true RS-232 performance from a single power supply
ranging from +3.0V to +5.5V. The ESD tolerance of the SP3222EU/SP3232EU devices are
over +/-15kV for both Human Body Model and IEC61000-4-2 Air discharge test methods. The
SP3222EU device has a low-power shutdown mode where the devices' driver outputs and
charge pumps are disabled. During shutdown, the supply current falls to less than 1µA.
SELECTION TABLE
MODEL
Power
Supplies
RS-232 RS-232
External Shutdown TTL
# of
Drivers Receivers Components
3-State Pins
SP3222EU +3.0V to +5.5V 2
2 4 Capacitors Yes
Yes 18, 20
SP3232EU +3.0V to +5.5V 2
2
4 Capacitors
No
No 16
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP3222EU/SP3232EU_102_031413
1 page  
Pin Function
NAME
EN
C1+
V+
C1-
C2+
C2-
V-
T1OUT
T2OUT
R1IN
R2IN
R1OUT
R2OUT
T1IN
T2IN
GND
VCC
SHDN
N.C.
FUNCTION
Receiver Enable. Apply Logic LOW for normal operation.
Apply logic HIGH to disable the receiver outputs (high-Z state)
Positive terminal of the voltage doubler charge-pump capacitor
+5.5V output generated by the charge pump
Negative terminal of the voltage doubler charge-pump capacitor
Positive terminal of the inverting charge-pump capacitor
Negative terminal of the inverting charge-pump capacitor
-5.5V output generated by the charge pump
RS-232 driver output.
RS-232 driver output.
RS-232 receiver input
RS-232 receiver input
TTL/CMOS receiver output
TTL/CMOS receiver output
TTL/CMOS driver input
TTL/CMOS driver input
Ground
+3.0V to +5.5V supply voltage
Shutdown Control Input. Drive HIGH for normal device operation.
Drive LOW to shutdown the drivers (high-Z output) and the on-
board power supply
No Connect
PIN NUMBER
SP3222EU SP3232EU
SOIC SSOP
TSSOP
11
-
22
33
44
55
66
77
15 17
88
14 16
99
13 15
10 10
12 13
11 12
16 18
17 19
1
2
3
4
5
6
14
7
13
8
12
9
11
10
15
16
18 20
-
- 11, 14
-
Table 1. Device Pin Description
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP3222EU/SP3232EU_102_031413
5 Page 
VCC = +5V
DESCRIPTION
+
C1 –
–5V
+5V
+
C2 –
–5V
Figure 14. Charge Pump — Phase 1
VCC = +5V
C4
+ – VDD Storage Capacitor
– + VSS Storage Capacitor
C3
+
C1 –
+
C2 –
-5.5V
C4
+ – VDD Storage Capacitor
– + VSS Storage Capacitor
C3
Figure 15. Charge Pump — Phase 2
+6V
a) C2+
[
T
]
GND 1
GND 2
T
b) C2-
T
-6V
Ch1 2.00V Ch2 2.00V M 1.00µs Ch1 5.48V
Figure 16. Charge Pump Waveforms
VCC = +5V
+
C1 –
–5V
+5V
+
C2 –
–5V
C4
+ – VDD Storage Capacitor
– + VSS Storage Capacitor
C3
Figure 17. Charge Pump — Phase 3
VCC = +5V
+
C1 –
+5.5V
+
C2 –
C4
+ – VDD Storage Capacitor
– + VSS Storage Capacitor
C3
Figure 18. Charge Pump — Phase 4
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
11
SP3222EU/SP3232EU_102_031413
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet SP3232EU.PDF ] | |
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