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Intersil Electronic Components Datasheet

ICL3244 Datasheet

RS-232 Transceiver

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®
Data Sheet
ICL3224, ICL3226, ICL3238, ICL3244
March 1, 2006
FN4876.10
1 Microamp, +3V to +5.5V, 250kbps,
RS-232 Transceivers with Enhanced
Automatic Powerdown
The Intersil ICL32XX devices are 3.0V to 5.5V powered
RS-232 transmitters/receivers which meet ElA/TIA-232 and
V.28/V.24 specifications, even at VCC = 3.0V. Targeted
applications are PDAs, Palmtops, and notebook and laptop
computers where the low operational, and even lower
standby, power consumption is critical. Efficient on-chip
charge pumps, coupled with manual and enhanced
automatic powerdown functions, reduce the standby supply
current to a 1µA trickle. Small footprint packaging, and the
use of small, low value capacitors ensure board space
savings as well. Data rates greater than 250kbps are
guaranteed at worst case load conditions. This family is fully
compatible with 3.3V only systems, mixed 3.3V and 5.0V
systems, and 5.0V only systems.
The ICL3244 is a 3 driver, 5 receiver device that provides a
complete serial port suitable for laptop or notebook
computers. The ICL3244/38 also include a noninverting
always-active receiver for RING INDICATOR monitoring.
These devices feature an enhanced automatic
powerdown function which powers down the on-chip power-
supply and driver circuits. This occurs when all receiver and
transmitter inputs detect no signal transitions for a period of
30sec. These devices power back up, automatically,
whenever they sense a transition on any transmitter or
receiver input.
Table 1 summarizes the features of the devices represented
by this data sheet, while Application Note AN9863
summarizes the features of each device comprising the
ICL32XX 3V family.
Features
Pb-Free Plus Anneal Available (RoHS Compliant)
±15kV ESD Protected (Human Body Model)
• Manual and Enhanced Automatic Powerdown Features
• Drop in Replacements for MAX3224, MAX3226,
MAX3238, MAX3244
• Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V
• Latch-Up Free
• RS-232 Compatible with VCC = 2.7V
• On-Chip Voltage Converters Require Only Four External
0.1µF Capacitors
• Flow-Through Pinout (ICL3238)
• Guaranteed Mouse Driveability (ICL3244)
• “Ready to Transmit” Indicator Output (ICL3224/26)
• Receiver Hysteresis For Improved Noise Immunity
• Guaranteed Minimum Data Rate . . . . . . . . . . . . . 250kbps
• Guaranteed Minimum Slew Rate . . . . . . . . . . . . . . . 6V/µs
• Wide Power Supply Range . . . . . . . Single +3V to +5.5V
• Low Supply Current in Powerdown State. . . . . . . . . . .1µA
Applications
• Any System Requiring RS-232 Communication Ports
- Battery Powered, Hand-Held, and Portable Equipment
- Laptop Computers, Notebooks, Palmtops
- Modems, Printers and other Peripherals
- Digital Cameras
- Cellular/Mobile Phones
- Data Cradles
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
• AN9863, “3V to +5.5V, 250k-1Mbps, RS-232
Transmitters/Receivers”
PART
NUMBER
ICL3224
ICL3226
ICL3238
ICL3244
NO. OF NO. OF
Tx. Rx.
22
11
53
35
TABLE 1. SUMMARY OF FEATURES
NO. OF
MONITOR Rx.
(ROUTB)
0
DATA
RATE
(kbps)
250
Rx. ENABLE
FUNCTION?
NO
READY
OUTPUT?
YES
0
250 NO
YES
1
250 NO
NO
1
250 NO
NO
MANUAL
POWER-
DOWN?
YES
YES
YES
YES
ENHANCED
AUTOMATIC
POWERDOWN
YES
YES
YES
YES
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2001, 2002, 2004-2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.


Intersil Electronic Components Datasheet

ICL3244 Datasheet

RS-232 Transceiver

No Preview Available !

ICL3224, ICL3226, ICL3238, ICL3244
Ordering Information
PART
PART
NUMBER* MARKING
ICL3224CA ICL3224CA
ICL3224CAZ 3224CAZ
(Note)
ICL3224IA ICL3224IA
TEMP.
RANGE
(°C)
PACKAGE
PKG.
DWG. #
0 to 70 20 Ld SSOP M20.209
0 to 70 20 Ld SSOP M20.209
(Pb-free)
-40 to 85 20 Ld SSOP M20.209
ICL3224IAZ 3224IAZ
(Note)
-40 to 85 20 Ld SSOP M20.209
(Pb-free)
ICL3226CA ICL3226CA 0 to 70 16 Ld SSOP M16.209
ICL3226CAZ ICL3226CAZ 0 to 70 16 Ld SSOP M16.209
(Note)
(Pb-free)
ICL3226IA ICL3226IA -40 to 85 16 Ld SSOP M16.209
ICL3226IAZ ICL3226IAZ -40 to 85 16 Ld SSOP M16.209
(Note)
(Pb-free)
ICL3238CA ICL3238CA 0 to 70 28 Ld SSOP M28.209
Ordering Information (Continued)
PART
NUMBER*
PART
MARKING
TEMP.
RANGE
(°C)
PACKAGE
PKG.
DWG. #
ICL3238CAZ ICL3238CAZ 0 to 70 28 Ld SSOP M28.209
(Note)
(Pb-free)
ICL3238IA ICL3238IA -40 to 85 28 Ld SSOP M28.209
ICL3238IAZ ICL3238IAZ -40 to 85 28 Ld SSOP M28.209
(Note)
(Pb-free)
ICL3244CA ICL3244CA 0 to 70 28 Ld SSOP M28.209
ICL3244IA ICL3244IA -40 to 85 28 Ld SSOP M28.209
* Most surface mount devices are available on tape and reel; add “-T”
to suffix.
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which are RoHS compliant and
compatible with both SnPb and Pb-free soldering operations. Intersil
Pb-free products are MSL classified at Pb-free peak reflow
temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-020.
Pinouts
ICL3224 (SSOP)
TOP VIEW
READY 1
C1+ 2
V+ 3
C1- 4
C2+ 5
C2- 6
V- 7
T2OUT 8
R2IN 9
R2OUT 10
20 FORCEOFF
19 VCC
18 GND
17 T1OUT
16 R1IN
15 R1OUT
14 FORCEON
13 T1IN
12 T2IN
11 INVALID
ICL3226 (SSOP)
TOP VIEW
READY 1
C1+ 2
V+ 3
C1- 4
C2+ 5
C2- 6
V- 7
R1IN 8
16 FORCEOFF
15 VCC
14 GND
13 T1OUT
12 FORCEON
11 T1IN
10 INVALID
9 R1OUT
2 FN4876.10
March 1, 2006


Part Number ICL3244
Description RS-232 Transceiver
Maker Intersil
Total Page 3 Pages
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