SP3224E Datasheet, PDF (1/23 Pages) Sipex Corporation – 3.0V to 5.5V RS-232 Transceivers with Auto On-Line® Plus

SP3224E-SP3227E
3.0V to 5.5V RS-232 Transceivers with Auto On-Line® Plus
FEATURES
■ 15kV ESD protected RS-232 I/O pins
■ Auto On-line^® Plus automatic power saving mode
■ Meets true EIA/TIA-232-F standards from +3.0V to
+5.5V power supply.
■ Adheres to EIA/TIA-562 for interoperability with
EIA/TIA-232 down to a +2.7V supply voltage
■ Regulated charge pump yields stable
RS-232 outputs
■ Drop-in replacement to MAX3224, ICL3224,
MAX3225, ICL3225, MAX3226, ICL3226,
MAX3227 and ICL3227
■ SP3224E and SP3226E reduced EMI with a slew
rate controlled 250kbps data rate
READY 1
C1+ 2
20 SHUTDOWN
19 ^VCC
V+ 3
18 GND
C1- ₄
17 ^T1OUT
C2+
5
SP3224E
SP3225E
16
R1IN
C2- 6
15 R1OUT
V- 7
14 ONLINE
T2OUT 8
13 ^T1IN
R2IN 9
12 T2IN
R2OUT 10
11 STATUS
Typical Applications
■ Diagnostic/Serial ports on
■ SP3225E and SP3227E- high speed data rate of
1 Mbps.
■ Available in RoHS compliant, Lead Free
Packaging
embedded applications
■ Handheld Test Equipment
■ PC related Peripherals and
Equipment
■ Battery Powered Equipment
■ Point-of-sale Equipment
■ Set-top Box
DESCRIPTION
The SP3224E/3225E are 2-driver/2-receiver devices and the SP3226E/SP3227E are 1-
driver/1-receiver devices. All are ideal for computer peripherals, point-of-sale equipment,
consumer and embedded applications. These devices use 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 it to deliver compliant RS-232 perfor-
mance from a single power supply ranging from +3.0V to +5.5V.At voltages between 2.7V
and 3.0V the driver outputs are compliant with RS-562 and can interface to RS-232 over
short cables.
The Auto On-line^® Plus feature allows the device to automatically “wake-up” during a shut-
down state upon detecting activity and to enter a low power shutdown if idle.This power
saving feature functions without system intervention or modifications to software or driv-
ers.
SElection TABLE
All devices feature 3.0V to 5.5V power supply, 4 small charge pump capacitors, and 15kV ESD
protection.
Device
SP3224E
SP3225E
SP3226E
SP3227E
Data Rate (bps)
250k
1M
250k
1M
No. of
Drivers/Receivers
2/2
2/2
1/1
1/1
READY pin
Yes
Yes
Yes
Yes
Low-Power Shutdown
Auto On-Line^® Plus
Auto On-Line^® Plus
Auto On-Line^® Plus
Auto On-Line^® Plus
Package
20 SSOP/TSSOP
20 SSOP/TSSOP
16 SSOP/TSSOP
16 SSOP/TSSOP
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com

SP3224E,3225E,3226E,3227E_101_081711