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PDF XR32330 Data sheet ( Hoja de datos )
| Número de pieza | XR32330 | |
| Descripción | 3-Driver/3-Receiver Intelligent RS-232 Transceiver | |
| Fabricantes | Exar | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de XR32330 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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XR32330
3-Driver/3-Receiver Intelligent RS-232 Transceiver
with 1.65V-5.5V Interface
General Description
The XR32330 product is a 3-driver/ 3-receiver RS-232 transceiver featur-
ing a variable low voltage logic interface, down to 1.65V. This product is
intended for portable or hand-held applications such as bar code scan-
ners as well as point-of-sales terminals, security and industrial control
applications. The XR32330EBER device features slew-rate limited out-
puts for reduced crosstalk and EMI.
The XR32330 uses an internal high-efficiency charge-pump power supply
that requires only four 0.1μF capacitors in 3.3V operation. This charge
pump combined with Exar's driver architecture allow the XR32330 to
deliver compliant RS-232 performance from a single power supply rang-
ing from +3.0V to +5.5V.
The AUTO ON-LINE® feature allows the device to automatically "wake-
up" during a shutdown state when an RS-232 cable is connected and a
connected peripheral is turned on. Otherwise, the device automatically
shuts itself down drawing less than 1μA.
FEATURES
• Meets true EIA/TIA-232-F Standards from a
+3.0V to 5.5V power supply
•1.65V to 5.5V Logic Interface VL pin
• AUTO ON-LINE circuitry automatically wakes up
from a 1A shutdown
• 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
• 250Kbps min transmission rate (speed grade B)
• -40°C to 85°C ambient operating temperature
• Lead-free (RoHS 6) QFN package
APPLICATIONS
• Portable and Hand-Held Equipment
• Industrial and Process Control Equipment
• Point-Of-Sales Equipment
• Building Security and Automation
Typical Operating Circuit and Package Pinout
VL VCC
0.1F
18
VL
19
VCC
0.1F
0.1F
21 C1+
16 C1-
22 C2+
23 C2-
Charge
Pump
0.1F
V+ 20
V- 24
0.1F
0.1F
9 T1IN
T1OUT 4
TTL/CMOS
Inputs
To -P Supervisor
Circuit
8 T2IN
7
VC C
T3IN
14 Shutdown
15 OnLine
13 Status
Auto On-line /
Control
T2OUT 5
T3OUT 6
TTL/CMOS
Outputs
12 R1OUT
11 R2OUT
10 R3OUT
5K
5K
GND
17
5K
R1IN 1
R2IN 2
R3IN 3
RS-232
Outputs
RS-232
Inputs
R1IN 1
R2IN 2
R3IN 3
T1OUT 4
T2OUT 5
T3OUT 6
Ordering Information – Last Page
24 23 22 21 20 19
18 VL
XR32330
24 pin QFN
(4x4mm)
17 GND
16 C1-
15 ONLINE
14 SHUTDOWN
13 STATUS
7 8 9 10 11 12
June 16, 2016
1 / 13
exar.comXR32330
Rev 1B
1 page  
Pin Configuration
24 23 22 21 20 19
R1IN 1
18 VL
R2IN 2
17 GND
R3IN 3
16 C1-
T1OUT 4
15 ONLINE
T2OUT 5
T3OUT 6
Paddle
14 SHUTDOWN
13 STATUS
7 8 9 10 11 12
XR32330
Pin Assignments
Pin No.
1, 2, 3
Pin Name
R1IN, R2IN, R3IN
4, 5, 6 T1OUT, T2OUT, T3OUT
7, 8, 9 T3IN, T2IN, T1IN
10, 11, 12 R3OUT, R2OUT, R1OUT
13 STATUS
14 SHUTDOWN
15 ONLINE
16, 21
17
18
19
20
22, 23
24
-
C1-, C1+
GND
VL
VCC
V+
C2+, C2-
V-
Paddle
Type
Description
Inputs
±15KV ESD Protected, RS-232 Receiver Inputs
(5K pull-dwn)
Output
±15KV ESD Protected, RS-232 Driver Output
Input
TTL/CMOS Driver Input
Output
TTL/CMOS Receiver Output
Output
TTL/CMOS level output indicating if no valid RS-232 levels are present at the R1IN,
R2IN or R3IN input pins.
Input
TTL/CMOS level input, when driven low puts the XR32330 into shutdown mode (tri-
stating driver outputs and disabling the charge-pump); normal operation when driven
high.
Input
TTL/CMOS level input. A low input enables Auto On-Line mode, a high input disables
Auto On-Line Mode.
Analog
Negative and positive terminals of voltage doubler charge pump capacitor.
Supply
Ground
Supply
I/O Power Supply
Supply
Power Supply
Analog
Analog
Analog
Supply
Regulated positive (+5.5V) charge pump rail.
Positive and negative terminals of the inverting charge pump capacitor.
Regulated negative (-5.5V) charge pump rail.
Ground. The exposed paddle on the bottom of package is connected to device
ground. The paddle should be connected to ground on pcb.
June 16, 2016
5 / 13
exar.com/XR32330
Rev 1B
5 Page 
XR32330
Valid
RS-232
Level at
Receiver
Input
Yes
No
Yes
No
Yes
No
Table 2: XR32330 Operation Truth Table
SHUTDOWN ONLINE TxOUT RxOUT STATUS
Mode of Operation
L X High-Z High-Z H Manually forced shutdown
L X High-Z High-Z L Manually forced shutdown
H L Active Active H Normal Operation
(Auto On-Line® enabled)
H L High-Z Active L Standby Operation due to
Auto On-Line® circuitry
H H Active Active H Normal Operation
H H Active Active L Normal Operation
Table 3: XR32330 Driver and Receiver Truth Table
SHUTDOWN RxIN
RxOUT
TxIN
TxOUT
L X High-Z X High-Z
H LHLH
H HLHL
June 16, 2016
11 / 13
exar.com/XR32330
Rev 1B
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet XR32330.PDF ] | |
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