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What is ICL3221?

This electronic component, produced by the manufacturer "Intersil", performs the same function as "1 Microamp Supply-Current/ +3V to +5.5V/ 250kbps/ RS-232 Transmitters/Receivers".


ICL3221 Datasheet PDF - Intersil

Part Number ICL3221
Description 1 Microamp Supply-Current/ +3V to +5.5V/ 250kbps/ RS-232 Transmitters/Receivers
Manufacturers Intersil 
Logo Intersil Logo 


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Data Sheet
ICL3221, ICL3222, ICL3223,
ICL3232, ICL3241, ICL3243
September 1, 2015
FN4805.22
One Microamp Supply-Current, +3V to +5.5V,
250kbps, RS-232 Transmitters/Receivers
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 automatic
powerdown functions (except for the ICL3232), reduce the
standby supply current to a 1A 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 ICL324X are 3-driver, 5-receiver devices that provide a
complete serial port suitable for laptop or notebook
computers. Both devices also include noninverting always-
active receivers for “wake-up” capability.
The ICL3221, ICL3223 and ICL3243, feature an
automatic powerdown function which powers down the
on-chip power-supply and driver circuits. This occurs when
an attached peripheral device is shut off or the RS-232
cable is removed, conserving system power automatically
without changes to the hardware or operating system.
These devices power up again when a valid RS-232
voltage is applied to any 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 as an Option
(RoHS Compliant) (See Ordering Info)
• 15kV ESD Protected (Human Body Model)
• Drop in Replacements for MAX3221, MAX3222,
MAX3223, MAX3232, MAX3241, MAX3243, SP3243
• ICL3221 is Low Power, Pin Compatible Upgrade for 5V
MAX221
• ICL3222 is Low Power, Pin Compatible Upgrade for 5V
MAX242, and SP312A
• ICL3232 is Low Power Upgrade for HIN232/ICL232 and
Pin Compatible Competitor Devices
• RS-232 Compatible with VCC = 2.7V
• Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V
• Latch-Up Free
• On-Chip Voltage Converters Require Only Four External
0.1F Capacitors
• Manual and Automatic Powerdown Features (Except
ICL3232)
• Guaranteed Mouse Driveability (ICL324X Only)
• Receiver Hysteresis For Improved Noise Immunity
• Guaranteed Minimum Data Rate . . . . . . . . . . . . . 250kbps
• Guaranteed Minimum Slew Rate . . . . . . . . . . . . . . . 6V/s
• Wide Power Supply Range . . . . . . . Single +3V to +5.5V
• Low Supply Current in Powerdown State. . . . . . . . . . .1A
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
NO. OF NO. OF
PART NUMBER Tx.
Rx.
ICL3221
11
ICL3222
22
ICL3223
22
ICL3232
22
ICL3241
35
ICL3243
35
TABLE 1. SUMMARY OF FEATURES
NO. OF
MONITOR Rx.
(ROUTB)
0
DATA
RATE
(kbps)
250
Rx. ENABLE
FUNCTION?
Yes
READY
OUTPUT?
No
0 250 Yes No
0 250 Yes No
0 250 No No
2 250 Yes No
1 250 No No
MANUAL
POWER-
DOWN?
Yes
Yes
Yes
No
Yes
Yes
AUTOMATIC
POWERDOWN
FUNCTION?
Yes
No
Yes
No
No
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 LLC.
Copyright Intersil Americas LLC. 1999-2006, 2015. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

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ICL3221 equivalent
ICL3221, ICL3222, ICL3223, ICL3232, ICL3241, ICL3243
Typical Operating Circuits
ICL3221
C3 (OPTIONAL CONNECTION, NOTE)
+3.3V
+
0.1F
C1
0.1F
C2
0.1F
2
+
C1+
4 C1-
5
+
C2+
6 C2-
11
T1IN
15
VCC
T1
3
V+
+ C3
0.1F
V- 7
13
C4
+0.1F
T1OUT
R1OUT
9
1 EN
8
R1 5k
16
FORCEOFF
12 10
FORCEON
INVALID
GND
14
R1IN
VCC
TO POWER
CONTROL
LOGIC
NOTE: The negative terminal of C3 can be
connected to either VCC or GND
+3.3V
+
0.1F
C1
0.1F
C2
0.1F
2
+
4
5
+6
C1+
C1-
C2+
C2-
12
T1IN
T2IN
11
ICL3222
C3 (OPTIONAL CONNECTION, NOTE)
17
VCC
T1
T2
V+ 3 + C0.31F
V- 7 C4
+ 0.1F
15
T1OUT
8
T2OUT
R1OUT 13
R2OUT
10
1 EN
14
R1IN
R1 5k
9
R2 5k
R2IN
GND
16
18
SHDN
VCC
NOTE: The negative terminal of C3 can be
connected to either VCC or GND
+3.3V
+ 0.1F
C1
0.1F
C2
0.1F
2
+
C1+
4 C1-
5
+6
C2+
C2-
13
T1IN
12
T2IN
ICL3223
19
VCC
T1
T2
3
V+
+ C3
0.1F
V- 7
17
C4
+0.1F
T1OUT
8
T2OUT
R1OUT
R2OUT
15 16
R1 5k
10 9
1 EN
R2 5k
20
FORCEOFF
14
FORCEON
11
INVALID
GND
18
R1IN
R2IN
VCC
TO POWER
CONTROL LOGIC
5
+3.3V
+
0.1F
C1
0.1F
C2
0.1F
1
+
C1+
3 C1-
4
+
C2+
5
C2-
11
T1IN
10
T2IN
ICL3232
C3 (OPTIONAL CONNECTION, NOTE)
16
VCC
T1
T2
2
V+
+
C3
0.1F
V- 6
14
C4
+0.1F
T1OUT
7
T2OUT
R1OUT 12
9
R2OUT
R1
R2
GND
15
13
5k
8
5k
R1IN
R2IN
NOTE: The negative terminal of C3 can be
connected to either VCC or GND
FN4805.22
September 1, 2015


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ICL3221 datasheet


1. ICL3221 Datasheet - RS-232 Transmitter/Receiver

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Featured Datasheets

Part NumberDescriptionMFRS
ICL3221The function is 1 Microamp Supply-Current/ +3V to +5.5V/ 250kbps/ RS-232 Transmitters/Receivers. IntersilIntersil
ICL3221EThe function is (ICL32xxE) RS-232 Transmitters/Receivers. Intersil CorporationIntersil Corporation
ICL3221EMThe function is RS-232 Transmitters/Receivers. Intersil CorporationIntersil Corporation

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