XR32330 Datasheet, PDF (1/13 Pages) Exar Corporation – 3-Driver/3-Receiver Intelligent RS-232 Transceiver

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 V_L pin
• AUTO ON-LINE circuitry automatically wakes up
from a 1A shutdown
• Regulated Charge Pump yields stable RS-232
Outputs regardless of V_CC 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
0.1F
18
VL
19
VCC
0.1F
0.1F
21
C1+
16
C1-
22
C2+
23
C2-
Charge
Pump
0.1F
V+ 20
V- 24
0.1F
0.1F
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
5K
GND
17
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
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exar.comXR32330
Rev 1B