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Intersil Corporation
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ICL3243
Datasheet
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DATA SHEET
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Intersil Corporation ICL3221, ICL3222, ICL3223, ICL3232, ICL3241 Datasheet

...
3-1
TM
File Number 4805.2
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil and Design is a trademark of Intersil Corporation. | Copyright © Intersil Corporation 2000
ICL3221 thru ICL3243
1 Microamp Supply-Current, +3V to +5.5V, 250kbps, RS-232 Transmitters/Receivers
CC
= 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 1µA trickle. Small footprint packaging,and the use of small, low valuecapacitors 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 always­active receivers for “wake-up” capability.
The ICL3221, ICL3223 and ICL3243, feature an automatic powerdown function which powers down the on-chip power­supply 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
• Drop in Replacements for MAX3221, MAX3222, MAX3223, MAX3232, MAX3241, MAX3243, SP3243
• 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
• Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V
• Latch-Up Free
• On-Chip Voltage Converters Require Only Four External
0.1µF Capacitors
• Manual and Automatic Powerdown Features (Except ICL3232)
• Guaranteed Mouse Driveability
• 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
TABLE 1. SUMMARY OF FEATURES
PART
NUMBER
NO.OF
Tx.
NO.OF
Rx.
NO. OF
MONITOR Rx.
(R
OUTB
)
DATA RATE
(kbps)
Rx. ENABLE FUNCTION?
READY
OUTPUT?
MANUAL
POWER-
DOWN?
AUTOMATIC
POWERDOWN
FUNCTION?
ICL3221 1 1 0 250 YES NO YES YES ICL3222 2 2 0 250 YES NO YES NO ICL3223 2 2 0 250 YES NO YES YES ICL3232 2 2 0 250 NO NO NO NO ICL3241 3 5 2 250 YES NO YES NO ICL3243 3 5 1 250 NO NO YES YES
Data Sheet May 2000
3-2
Ordering Information
(NOTE 1)
PART NO.
TEMP.
RANGE (oC) PACKAGE PKG. NO.
ICL3221CA 0 to 70 16 Ld SSOP M16.209 ICL3221CV 0 to 70 16 Ld TSSOP M16.173 ICL3222CA 0 to 70 20 Ld SSOP M20.209 ICL3222CB 0 to 70 18 Ld SOIC M18.3 ICL3222CP 0 to 70 18 Ld PDIP E18.3 ICL3222CV 0 to 70 20 Ld TSSOP M20.173 ICL3223CA 0 to 70 20 Ld SSOP M20.209 ICL3223CP 0 to 70 20 Ld PDIP E20.3 ICL3223CV 0 to 70 20 Ld TSSOP M20.173 ICL3232CA 0 to 70 16 Ld SSOP M16.209 ICL3232CB 0 to 70 16 Ld SOIC M16.3 ICL3232CP 0 to 70 16 Ld PDIP E16.3 ICL3232CV 0 to 70 16 Ld TSSOP M16.173 ICL3241CA 0 to 70 28 Ld SSOP M28.209 ICL3241CB 0 to 70 28 Ld SOIC M28.3 ICL3241CV 0 to 70 28 Ld TSSOP M28.173 ICL3243CA 0 to 70 28 Ld SSOP M28.209 ICL3243CB 0 to 70 28 Ld SOIC M28.3 ICL3243CV 0 to 70 28 Ld TSSOP M28.173
NOTE:
1. Most surface mount devices are available on tape and reel; add “-T” to suffix.
Pinouts
ICL3221 (SSOP, TSSOP)
TOP VIEW
ICL3222 (PDIP, SOIC)
TOP VIEW
EN
C1+
V+ C1-
C2+
C2-
V-
R1
IN
FORCEOFF
GND T1
OUT
FORCEON T1
IN
R1
OUT
V
CC
INVALID
16 15 14 13 12 11 10
9
1 2 3 4 5 6 7 8
EN
C1+
V+ C1-
C2+
C2-
V-
T2
OUT
R2
IN
SHDN
GND T1
OUT
R1
IN
R1
OUT
T2
IN
V
CC
T1
IN
R2
OUT
18 17 16 15 14 13 12 11 10
1 2 3 4 5 6 7 8 9
ICL3221 thru ICL3243
3-3
ICL3222 (SSOP, TSSOP)
TOP VIEW
ICL3223 (PDIP, SSOP, TSSOP)
TOP VIEW
ICL3232 (PDIP, SOIC, SSOP, TSSOP)
TOP VIEW
ICL3241 (SOIC, SSOP, TSSOP)
TOP VIEW
ICL3243 (SOIC, SSOP, TSSOP)
TOP VIEW
Pinouts (Continued)
EN
C1+
V+ C1-
C2+
C2-
V-
T2
OUT
R2
IN
SHDN
GND T1
OUT
R1
IN
R1
OUT
T1
IN
NC
V
CC
NC
T2
IN
20 19 18 17 16 15 14 13 12 11
1 2 3 4 5 6 7 8 9
10
R2
OUT
EN
C1+
V+ C1-
C2+
C2-
V-
T2
OUT
R2
IN
FORCEOFF
GND T1
OUT
R1
IN
R1
OUT
T1
IN
INVALID
V
CC
FORCEON
T2
IN
20 19 18 17 16 15 14 13 12 11
1 2 3 4 5 6 7 8 9
10
R2
OUT
C1+
V+ C1­C2+
C2-
V-
T2
OUT
R2
IN
V
CC
T1
OUT
R1
IN
R1
OUT
T1
IN
R2
OUT
GND
T2
IN
16 15 14 13 12 11 10
9
1 2 3 4 5 6 7 8
C2+
C2-
V-
R1
IN
R2
IN
R3
IN
R4
IN
R5
IN
T1
OUT
T3
OUT
T3
IN
T2
IN
T1
IN
C1+
V
CC
GND C1­EN
R1
OUTB
R1
OUT
R2
OUT
R3
OUT
R4
OUT
R5
OUT
V+
SHDN
R2
OUTB
28 27 26 25 24 23 22 21 20 19 18 17 16 15
1 2 3 4 5 6 7 8
9 10 11 12 13 14
T2
OUT
C2+
C2-
V-
R1
IN
R2
IN
R3
IN
R4
IN
R5
IN
T1
OUT
T3
OUT
T3
IN
T2
IN
T1
IN
C1+
V
CC
GND C1­FORCEON
INVALID
R1
OUT
R2
OUT
R3
OUT
R4
OUT
R5
OUT
V+
FORCEOFF
R2
OUTB
28 27 26 25 24 23 22 21 20 19 18 17 16 15
1 2 3 4 5 6 7 8
9 10 11 12 13 14
T2
OUT
ICL3221 thru ICL3243
3-4
Pin Descriptions
PIN FUNCTION
V
CC
System power supply input (3.0V to 5.5V).
V+ Internally generated positive transmitter supply (+5.5V).
V- Internally generated negative transmitter supply (-5.5V).
GND Ground connection.
C1+ External capacitor (voltage doubler) is connected to this lead.
C1- External capacitor (voltage doubler) is connected to this lead.
C2+ External capacitor (voltage inverter) is connected to this lead.
C2- External capacitor (voltage inverter) is connected to this lead. T
IN
TTL/CMOS compatible transmitter Inputs.
T
OUT
RS-232 level (nominally ±5.5V) transmitter outputs.
R
IN
RS-232 compatible receiver inputs.
R
OUT
TTL/CMOS level receiver outputs.
R
OUTB
TTL/CMOS level, noninverting, always enabled receiver outputs.
INVALID Active low output that indicates if no valid RS-232 levels are present on any receiver input.
EN Active low receiver enable control; doesn’t disable R
OUTB
outputs.
SHDN Active low input to shut down transmitters and on-board power supply, to place device in low power mode.
FORCEOFF Active low to shut down transmitters and on-chip power supply.This overridesanyautomatic circuitry and FORCEON (see Table 2).
FORCEON Active high input to override automatic powerdown circuitry thereby keeping transmitters active. (FORCEOFF must be high).
Typical Operating Circuits
ICL3221
15
V
CC
T1
OUT
T1
IN
T
1
0.1µF
+
0.1µF
+
0.1µF
11
13
2 4
3
7
V+
V-
C1+ C1-
C2+ C2-
+
0.1µF
5
6
R1
OUT
R1
IN
R
1
89
5kΩ
C
1
C
2
+
C
3
C
4
EN
1
GND
+3.3V
+
0.1µF
14
TTL/CMOS
LOGIC LEVELS
RS-232 LEVELS
FORCEON
FORCEOFF
12
16
V
CC
10
INVALID
TO POWER CONTROL LOGIC
ICL3221 thru ICL3243
3-5
ICL3222
ICL3223
Typical Operating Circuits (Continued)
17
V
CC
T1
OUT
T2
OUT
T1
IN
T2
IN
T
1
T
2
0.1µF
+
0.1µF
+
0.1µF
12
11
15
8
2 4
3
7
V+
V-
C1+ C1-
C2+ C2-
+
0.1µF
5 6
R1
OUT
R1
IN
14
5kΩ
R2
OUT
R2
IN
9
10
5kΩ
13
C
1
C
2
+
C
3
C
4
EN
SHDN
1
GND
18
+3.3V
+
0.1µF
16
V
CC
TTL/CMOS
LOGIC LEVELS
RS-232 LEVELS
R
1
R
2
19
V
CC
T1
OUT
T2
OUT
T1
IN
T2
IN
T
1
T
2
0.1µF
+
0.1µF
+
0.1µF
13
12
17
8
2 4
3
7
V+
V-
C1+ C1-
C2+ C2-
+
0.1µF
5 6
R1
OUT
R1
IN
16
5kΩ
R2
OUT
R2
IN
910
5kΩ
15
C
1
C
2
+
C
3
C
4
EN
1
GND
+3.3V
+
0.1µF
18
TTL/CMOS
LOGIC LEVELS
RS-232 LEVELS
R
1
R
2
FORCEON
FORCEOFF
14
20
V
CC
11
INVALID
TO POWER CONTROL LOGIC
ICL3221 thru ICL3243
3-6
ICL3232
Typical Operating Circuits (Continued)
16
V
CC
T1
OUT
T2
OUT
T1
IN
T2
IN
T
1
T
2
0.1µF
+
0.1µF
+
0.1µF
11
10
14
7
1 3
2
6
V+
V-
C1+ C1-
C2+ C2-
+
0.1µF
4 5
R1
OUT
R1
IN
13
5kΩ
R2
OUT
R2
IN
8
9
5kΩ
12
C
1
C
2
+
C
3
C
4
GND
+3.3V
+
0.1µF
15
TTL/CMOS
LOGIC LEVELS
RS-232 LEVELS
R
1
R
2
ICL3221 thru ICL3243
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