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SP3244E Datasheet, PDF (1/22 Pages) Sipex Corporation – 3.0V to 5.5V RS-232 Transceivers with Auto On-Line® Plus | |||
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SP3244E-SP3245E
3.0V to 5.5V RS-232 Transceivers with Auto On-Line® Plus
FEATURES
⢠Contains 3-Drivers and 5-Receivers;
Single-chip DTE (PC or terminal) serial port transceiver
⢠Auto On-line® Plus
⢠SP3244E slew-controlled to 250Kbps under load
⢠SP3245E 1Mbps data rate for high-speed RS-232
⢠Meets true EIA/TIA-232-F and ITU V.28 standards
from a +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 regardless of VCC variations
⢠ESD Speciï¬cations:
±15KV Human Body Model
±15KV IEC1000-4-2 Air Discharge
± 8KV IEC1000-4-2 Contact Discharge
C2+ 1
C2- 2
V- 3
R1IN 4
R2IN 5
R3IN 6
R4IN 7
R5IN 8
28 C1+
27 V+
26 VCC
25 GND
24 C1-
SP3244E 23 ONLINE
SP3245E 22 SHUTDOWN
21 STATUS
T1OUT 9
20 R2OUT
T2OUT 10
19 R1OUT
APPLICATIONS
⢠Portable RS-232
⢠Laptops and handheld PCs and PDA
T3OUT 11
T3IN 12
18 R2OUT
17 R3OUT
⢠Cellular telephones, datacables, chargingcradles
⢠Diagnostic/upload ports on embedded applications
⢠Use in conjunction with low-voltage UART or
microcontroller
T2IN 13
T1IN 14
16 R4OUT
15 R5OUT
⢠SP3244E is cross-compatible with MAX3244E,
ICL3244E
⢠SP3245E is cross-compatible with MAX3245E,
ICL3245E
DESCRIPTION
The SP3244E/3245E is a 3-driver/5-receiver device ideal for mobile phone, consumer and PDA
applications. These devices use an internal high-efï¬ciency, charge-pump power supply that requires
only 0.1µF capacitors for 3.3V single-supply operation. This charge pump and Sipexâs driver archi-
tecture allow the SP3244E/3245E to deliver compliant RS-232 performance from a 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 in portable applications.
The Auto On-line® Plus feature allows the device to automatically enter a low power shutdown
mode if all receiver and driver inputs have been idle for 30 seconds. The device will âwake-upâ from
this automatic shutdown state upon detecting activity. This power saving feature functions without
system intervention or modiï¬cations to software or drivers.
SP3244E supports serial data rates of 250kbps minimum under full load and while maintaining
slew rates of less than 30V/µs. SP3245E is capable of high speed communication of up to 1Mbps.
Rev M 10/9/06
SP3244E-SP3245E, 3.0V to 5.5V RS-232 Transceivers with Auto On-Line® Plus
1
© Copyright 2006 Sipex Corporation
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