ICL3244E Datasheet PDF - Intersil Corporation
| Part Number | ICL3244E | |
| Description | (ICL3224E - ICL3244E) RS-232 Transceivers | |
| Manufacturers | Intersil Corporation | |
| Logo |  |
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®
Data Sheet
ICL3224E, ICL3226E, ICL3244E
February 27, 2006
FN4899.6
+/-15kV ESD Protected, +3V to +5.5V,
1Microamp, 250kbps, RS-232
Transceivers with Enhanced Automatic
Powerdown
The Intersil ICL32XXE 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. Additionally,
they provide ±15kV ESD protection (IEC61000-4-2 Air Gap
and Human Body Model) on transmitter outputs and receiver
inputs (RS-232 pins). 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 ICL3244E is a 3 driver, 5 receiver device that provides a
www.DataSheet4U.cocmomplete serial port suitable for laptop or notebook
computers. It also includes a noninverting always-active
receiver for “wake-up” capability.
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
30 seconds. 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
ICL32XXE 3V family.
Features
• Pb-Free Plus Anneal Available (RoHS Compliant)
• ESD Protection for RS-232 I/O Pins to ±15kV (IEC61000)
• Manual and Enhanced Automatic Powerdown Features
• Drop in Replacements for MAX3224E, MAX3226E,
MAX3244E
• Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V
• RS-232 Compatible with VCC = 2.7V
• Latch-Up Free
• On-Chip Voltage Converters Require Only Four External
0.1µF Capacitors
• Guaranteed Mouse Driveability (ICL3244E)
• “Ready to Transmit” Indicator Output (ICL3224E/26E)
• 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
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
TABLE 1. SUMMARY OF FEATURES
PART
NUMBER
ICL3224E
ICL3226E
ICL3244E
NO. OF NO. OF
Tx. Rx.
22
11
35
NO. OF
MONITOR Rx.
(ROUTB)
0
0
1
DATA
RATE
(kbps)
250
250
250
Rx. ENABLE
FUNCTION?
No
No
No
READY
OUTPUT?
Yes
Yes
No
MANUAL
POWER-
DOWN?
Yes
Yes
Yes
ENHANCED
AUTOMATIC
POWERDOWN
FUNCTION?
Yes
Yes
Yes
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2000, 2001, 2003-2006. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
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ICL3224E, ICL3226E, ICL3244E
Typical Operating Circuits (Continued)
+3.3V
C1
0.1µF
C2
0.1µF
ICL3244E
+
0.1µF
28
+ C1+
24 C1-
+ 1 C2+
2 C2-
26
VCC
14
T1IN
T1
13
T2IN
T2
12
T3IN
T3
20
R2OUTB
TTL/CMOS
LOGIC LEVELS
19
R1OUT
R1
18
R2OUT
R2
17
R3OUT
16
R4OUT
R3
R4
R5OUT
15
23 R5
FORCEON
VCC
TO POWER
CONTROL LOGIC
22
FORCEOFF
21
INVALID GND
25
V+
27
+
C3
0.1µF
V- 3 C4
+0.1µF
9
T1OUT
10 RS-232
T2OUT LEVELS
11
T3OUT
4
5kΩ
5
5kΩ
6
5kΩ
7
5kΩ
8
5kΩ
R1IN
R2IN
R3IN
R4IN
R5IN
RS-232
LEVELS
5
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for ICL3244E electronic component. |
| Information | Total 20 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ ICL3244E.PDF Datasheet ] | |
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Featured Datasheets
| Part Number | Description | MFRS |
| ICL3244 | The function is 1 Microamp/ +3V to +5.5V/ 250kbps/ RS-232 Transceivers with Enhanced Automatic Powerdown. Intersil |  |
| ICL3244E | The function is (ICL3224E - ICL3244E) RS-232 Transceivers. Intersil Corporation | |
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