SP3221E Datasheet, PDF (1/20 Pages) Sipex Corporation – Intelligent +3.0V to +5.5V RS-232 Transceiver

SP3221E
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
• AUTO ON-LINE^® circuitry automatically
wakes up from a 1µA typical shutdown
• Minimum 250kbps data rate under load
• Regulated charge pump yields stable
RS-232 outputs regardless of V_CC variations
• ESD specifications:
+15KV Human Body Model
+15KV IEC61000-4-2 Air Discharge
+8KV IEC61000-4-2 Contact Discharge
EN 1
C1+ 2
V+ 3
C1- 4
C2+ 5
C2- 6
V- ₇
R1IN 8
SP3221E
16 SHDN
15 VCC
14 GND
13 T1OUT
12 ONLINE
11 T1IN
10 STATUS
9 R1OUT
DESCRIPTION
The SP3221E is an RS-232 transceiver solution intended for portable applications such as
notebook and hand held computers. This device 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 SP3221E to deliver compliant RS-232 performance from
a single power supply ranging from +3.0V to +5.5V. The SP3221E is a 1-driver/1-receiver
device ideal for laptop/notebook computer and PDA applications. The SP3221E is offered
in 16 pin TSSOP and SSOP packages.
The AUTO ON-LINE^® feature allows the device to automatically "wake-up" during a shut-
down 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.
SELECTION TABLE
Device
SP3221E
Power
Supplies
+3.0V to +5.5V
RS- 232
Drivers
1
RS-232
Receivers
1
AUTO ON-LINE ®
YES
TTL
3-state
YES
Data Rate
(kbps)
250
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • [phone] • www.exar.com

SP3221E_102_091014