ICL3224 Intersil, ICL3224 Datasheet

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ICL3224

Manufacturer Part Number
ICL3224
Description
1 Microamp/ +3V to +5.5V/ 250kbps/ RS-232 Transceivers with Enhanced Automatic Powerdown
Manufacturer
Intersil
Datasheet

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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 V
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.
NUMBER
ICL3224
ICL3226
ICL3238
ICL3244
PART
NO. OF
Tx.
2
1
5
3
NO. OF
®
Rx.
2
1
3
5
1
CC
MONITOR Rx.
Data Sheet
(R
= 3.0V. Targeted
NO. OF
OUTB
0
0
1
1
)
TABLE 1. SUMMARY OF FEATURES
(kbps)
DATA
RATE
1-888-INTERSIL or 321-724-7143
250
250
250
250
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
ICL3224, ICL3226, ICL3238, ICL3244
Rx. ENABLE
FUNCTION?
Features
• Manual and Enhanced Automatic Powerdown Features
• Drop in Replacements for MAX3224, MAX3226,
• Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V
• Latch-Up Free
• RS-232 Compatible with V
• On-Chip Voltage Converters Require Only Four External
• 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
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
• AN9863, “3V to +5.5V, 250k-1Mbps, RS-232
NO
NO
NO
NO
±
MAX3238, MAX3244
0.1µF Capacitors
- Battery Powered, Hand-Held, and Portable Equipment
- Laptop Computers, Notebooks, Palmtops
- Modems, Printers and other Peripherals
- Digital Cameras
- Cellular/Mobile Phones
- Data Cradles
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
Transmitters/Receivers”
15kV ESD Protected (Human Body Model)
November 2002
All other trademarks mentioned are the property of their respective owners.
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
OUTPUT?
READY
YES
YES
NO
NO
Copyright © Intersil Americas Inc. 2002. All Rights Reserved
MANUAL
POWER-
CC
DOWN?
YES
YES
YES
YES
= 2.7V
POWERDOWN
AUTOMATIC
ENHANCED
FN4876.6
YES
YES
YES
YES

Related parts for ICL3224

ICL3224 Summary of contents

Page 1

... 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 • ...

Page 2

... OUT OUT FORCEON 13 FORCEOFF 14 2 ICL3224, ICL3226, ICL3238, ICL3244 Ordering Information (NOTE 1) PART NO. PKG. NO. ICL3244IA M20.209 ICL3244CB M20.209 ICL3244IB E20.3 ICL3244CV M16.209 ICL3244IV M16.209 NOTE: M28.209 1. Most surface mount devices are available on tape and reel; add M28.209 “ ...

Page 3

... TTL/CMOS 15 LOGIC R1 LEVELS OUT OUT READY FORCEOFF 14 INVALID FORCEON GND 18 3 ICL3224, ICL3226, ICL3238, ICL3244 FUNCTION 0.1µ 0.1µ OUT TTL/CMOS 8 LOGIC LEVELS T2 OUT RS-232 16 LEVELS R1 5kΩ 5kΩ ...

Page 4

... LOGIC 2 NOTES: 2. THE NEGATIVE TERMINAL OF C CAN BE CONNECTED TO EITHER GND FOR V = 3.15V (3.3V -5%), USE 3.0V (3.3V -10%), USE 0.22µ ICL3224, ICL3226, ICL3238, ICL3244 (Continued) C (OPTIONAL 3 CONNECTION, NOTE 0.1µF NOTE 0.1µ OUT 6 T2 ...

Page 5

... Input Resistance TRANSMITTER OUTPUTS Output Voltage Swing All Transmitter Outputs Loaded with 3kΩ to Ground 5 ICL3224, ICL3226, ICL3238, ICL3244 Thermal Information Thermal Resistance (Typical, Note PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . 28 Ld SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 6

... Human Body Model OUT IN IEC1000-4-2 Contact Discharge IEC1000-4-2 Air Gap Discharge All Other Pins Human Body Model NOTE “edge” is defined as a transition through the transmitter or receiver input thresholds. 6 ICL3224, ICL3226, ICL3238, ICL3244 = 3V to 5.5V 0 (Continued) A TEST CONDITIONS = 0V, Transmitter Output = ± ...

Page 7

... CC uses hysteresis to increase noise immunity and decrease errors due to slow input signal transitions. 7 ICL3224, ICL3226, ICL3238, ICL3244 The ICL3238 and ICL3244 inverting receivers disable during forced (manual) powerdown, but not during automatic powerdown (see Table 2). Conversely, the monitor receiver remains active even during manual powerdown making it extremely useful for Ring Indicator monitoring ...

Page 8

... FORCEON and FORCEOFF inputs determine the IC’s mode. For always enabled operation, FORCEON and FORCEOFF are both strapped high. To switch between 8 ICL3224, ICL3226, ICL3238, ICL3244 TABLE 2. POWERDOWN LOGIC TRUTH TABLE (NOTE 6) TRANSMITTER RECEIVER ...

Page 9

... INVALID logic detects the invalid levels and drives the output low. The power management logic then 9 ICL3224, ICL3226, ICL3238, ICL3244 uses this indicator to power down the interface block. Reconnecting the cable restores valid levels at the receiver inputs, INVALID switches high, and the power management logic wakes up the interface block ...

Page 10

... FIGURE 8. ENHANCED AUTOMATIC POWERDOWN, INVALID AND READY TIMING DIAGRAMS 10 ICL3224, ICL3226, ICL3238, ICL3244 FIGURE 9. CONNECTIONS FOR AUTOMATIC POWERDOWN Hybrid Automatic Powerdown Options For devices which communicate only through a detachable cable, connecting INVALID to FORCEOFF (with FORCEON = 0) may be a desirable configuration. While the cable is ...

Page 11

... FORCEON to FORCEOFF through a network similar to that shown in Figure 5. Ready Output (ICL3224 and ICL3226 only) The Ready output indicates that the ICL322X is ready to transmit. Ready switches low whenever the device enters powerdown, and switches back high during power-up when V- reaches -4V or lower. ...

Page 12

... OUT FORCEON V CC FORCEOFF FIGURE 12. TRANSMITTER LOOPBACK TEST CIRCUIT 5V/DIV OUT R1 OUT V = +3. 0.1µF 5µs/DIV. FIGURE 13. LOOPBACK TEST AT 120kbps 12 ICL3224, ICL3226, ICL3238, ICL3244 5V/DIV OUT + OUT 1000pF Interconnection with 3V and 5V Logic The ICL32XX directly interface with 5V CMOS and TTL logic families ...

Page 13

... FIGURE 17. SLEW RATE vs LOAD CAPACITANCE 35 ICL3226 1000 2000 3000 LOAD CAPACITANCE (pF) FIGURE 19. SUPPLY CURRENT vs LOAD CAPACITANCE WHEN TRANSMITTING DATA 13 ICL3224, ICL3226, ICL3238, ICL3244 3.3V OUT V - OUT 4000 5000 FIGURE 16. TRANSMITTER OUTPUT VOLTAGE vs LOAD 40 35 ...

Page 14

... LOAD CAPACITANCE (pF) FIGURE 21. SUPPLY CURRENT vs LOAD CAPACITANCE WHEN TRANSMITTING DATA Die Characteristics SUBSTRATE POTENTIAL (POWERED UP): GND TRANSISTOR COUNT: ICL3224: 937 ICL3226: 825 ICL3238: 1235 ICL3244: 1109 PROCESS: Si Gate CMOS 14 ICL3224, ICL3226, ICL3238, ICL3244 3.3V (Continued 3.5 3.0 250kbps 2.5 2.0 120kbps 1.5 1.0 20kbps ...

Page 15

... N is the maximum number of terminal positions. 10. Corner leads (1, N, N/2 and N for E8.3, E16.3, E18.3, E28.3, E42.6 will have a B1 dimension of 0.030 - 0.045 inch (0.76 - 1.14mm). 15 ICL3224, ICL3226, ICL3238, ICL3244 E20.3 20 LEAD DUAL-IN-LINE PLASTIC PACKAGE SYMBOL E ...

Page 16

... Dimension “B” does not include dambar protrusion. Allowable dambar protrusion shall be 0.13mm (0.005 inch) total in excess of “B” dimen- sion at maximum material condition. 10. Controlling dimension: MILLIMETER. Converted inch dimensions are not necessarily exact. 16 ICL3224, ICL3226, ICL3238, ICL3244 M16.209 16 LEAD SHRINK SMALL OUTLINE PLASTIC PACKAGE ...

Page 17

... Dimension “B” does not include dambar protrusion. Allowable dam- bar protrusion shall be 0.13mm (0.005 inch) total in excess of “B” dimension at maximum material condition. 10. Controlling dimension: MILLIMETER. Converted inch dimensions are not necessarily exact. 17 ICL3224, ICL3226, ICL3238, ICL3244 M20.209 20 LEAD SHRINK SMALL OUTLINE PLASTIC PACKAGE ...

Page 18

... Minimum space between protru- sion and adjacent lead is 0.07mm (0.0027 inch). 10. Controlling dimension: MILLIMETER. Converted inch dimensions are not necessarily exact. (Angles in degrees) 18 ICL3224, ICL3226, ICL3238, ICL3244 M28.173 28 LEAD THIN SHRINK SMALL OUTLINE PLASTIC PACKAGE M B ...

Page 19

... D - 0.25(0.010 SIDE VIEW BOTTOM VIEW 19 ICL3224, ICL3226, ICL3238, ICL3244 M28.3B 28 LEAD WIDE BODY SMALL OUTLINE EXPOSED PAD 0.25(0.010 PLASTIC PACKAGE SYMBOL α C 0.10(0.004) P1 NOTES: 1. Symbols are defined in the “MO Series Symbol List” in Section 2 ...

Page 20

... However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 20 ICL3224, ICL3226, ICL3238, ICL3244 M28.209 28 LEAD SHRINK SMALL OUTLINE PLASTIC PACKAGE M ...

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