ICL3244ECAZ-T Intersil, ICL3244ECAZ-T Datasheet

TRANSMITTER/RCVR RS232 28-SSOP

ICL3244ECAZ-T

Manufacturer Part Number
ICL3244ECAZ-T
Description
TRANSMITTER/RCVR RS232 28-SSOP
Manufacturer
Intersil
Type
Transceiverr
Datasheet

Specifications of ICL3244ECAZ-T

Number Of Drivers/receivers
3/5
Protocol
RS232
Voltage - Supply
3 V ~ 5.5 V
Mounting Type
Surface Mount
Package / Case
28-SSOP
Peak Reflow Compatible (260 C)
Yes
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ICL3244ECAZ-TTR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ICL3244ECAZ-T
Manufacturer:
INTERSIL
Quantity:
10 071
+/-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 V
they provide
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
complete 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.
NUMBER
ICL3224E
ICL3226E
ICL3244E
PART
±
15kV ESD protection (IEC61000-4-2 Air Gap
NO. OF
Tx.
2
1
3
NO. OF
®
Rx.
2
1
5
1
CC
MONITOR Rx.
Data Sheet
= 3.0V. Additionally,
(R
NO. OF
OUTB
0
0
1
)
TABLE 1. SUMMARY OF FEATURES
1-888-INTERSIL or1-888-468-3774
(kbps)
DATA
RATE
250
250
250
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Rx. ENABLE
FUNCTION?
ICL3224E, ICL3226E, ICL3244E
Features
• Pb-Free Plus Anneal Available (RoHS Compliant)
• ESD Protection for RS-232 I/O Pins to
• Manual and Enhanced Automatic Powerdown Features
• Drop in Replacements for MAX3224E, MAX3226E,
• Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V
• RS-232 Compatible with V
• Latch-Up Free
• On-Chip Voltage Converters Require Only Four External
• 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
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
No
No
No
MAX3244E
0.1µF Capacitors
- Battery Powered, Hand-Held, and Portable Equipment
- Laptop Computers, Notebooks, Palmtops
- Modems, Printers and other Peripherals
- Digital Cameras
- Cellular/Mobile Phones
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
February 27, 2006
Copyright Intersil Americas Inc. 2000, 2001, 2003-2006. All Rights Reserved.
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
MANUAL
POWER-
CC
DOWN?
Yes
Yes
Yes
= 2.7V
±
15kV (IEC61000)
POWERDOWN
AUTOMATIC
FUNCTION?
ENHANCED
FN4899.6
Yes
Yes
Yes

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ICL3244ECAZ-T Summary of contents

Page 1

... Copyright Intersil Americas Inc. 2000, 2001, 2003-2006. All Rights Reserved. All other trademarks mentioned are the property of their respective owners. FN4899.6 ± 15kV (IEC61000) = 2.7V CC ENHANCED MANUAL AUTOMATIC READY POWER- POWERDOWN OUTPUT? DOWN? FUNCTION? Yes Yes Yes Yes Yes Yes No Yes Yes | Intersil (and design registered trademark of Intersil Americas Inc. ...

Page 2

... ICL3226EIA-T ICL3226EIA ICL3226EIAZ 3226EIAZ ICL3226EIAZ-T 3226EIAZ ICL3244ECA ICL3244ECA ICL3244ECA-T ICL3244ECA ICL3244ECAZ (Note) ICL3244ECAZ ICL3244ECAZ-T (Note) ICL3244ECAZ ICL3244EIA ICL3244EIA ICL3244EIA-T ICL3244EIA ICL3244EIAZ (Note) ICL3244EIAZ ICL3244EIAZ-T (Note) ICL3244EIAZ ICL3244EIB ICL3244EIB 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 ...

Page 3

Pinouts (Continued) Pin Descriptions PIN V System power supply input (3.0V to 5.5V 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 ...

Page 4

Typical Operating Circuits TTL/CMOS LOGIC LEVELS +3.3V + TTL/CMOS LOGIC LEVELS 4 ICL3224E, ICL3226E, ICL3244E ICL3224E +3.3V + 0.1µ C1 0.1µ C2+ + 0.1µ C2- ...

Page 5

Typical Operating Circuits TTL/CMOS LOGIC LEVELS 5 ICL3224E, ICL3226E, ICL3244E (Continued) ICL3244E +3.3V + 0.1µ C1 0.1µ C2+ + 0.1µ ...

Page 6

Absolute Maximum Ratings V to Ground -0.3V to ...

Page 7

Electrical Specifications Test Conditions: V Typicals are at T PARAMETER Input Threshold High 5.0V CC Input Hysteresis Input Resistance TRANSMITTER OUTPUTS Output Voltage Swing All Transmitter Outputs Loaded with 3kΩ to Ground = V+ ...

Page 8

... The circuit is divided into three sections: The charge pump, the transmitters, and the receivers. Charge-Pump Intersil’s new ICL32XXE family utilizes regulated on-chip dual charge pumps as voltage doublers, and voltage inverters to generate ±5.5V transmitter supplies from a V supply as low as 3.0V. This allows these devices to maintain RS-232 compliant output levels over the ± ...

Page 9

The ICL3244E 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. Standard receivers RCVR OR XMTR ...

Page 10

OUT CC Rx POWERED DOWN UART Tx SHDN = GND GND FIGURE 2. POWER DRAIN THROUGH POWERED DOWN PERIPHERAL V CC TRANSITION DETECTOR TO WAKE-UP LOGIC OUTB ...

Page 11

MASTER POWERDOWN LINE POWER MANAGEMENT 0.1µF UNIT FORCEOFF ICL32XXE FIGURE 5. CIRCUIT TO ENSURE IMMEDIATE POWER UP WHEN EXITING FORCED POWERDOWN INVALID Output The INVALID output always indicates (see Table 2) whether or not 30µs have elapsed with invalid RS-232 ...

Page 12

RECEIVER INPUTS TRANSMITTER INPUTS TRANSMITTER OUTPUTS t INVH INVALID t INVL OUTPUT READY OUTPUT FIGURE 8. ENHANCED AUTOMATIC POWERDOWN, INVALID AND READY TIMING DIAGRAMS another computer via a detachable cable. Detaching the cable allows the ...

Page 13

When using minimum required capacitor values, make sure that capacitor values do not degrade excessively with temperature doubt, use capacitors with a larger nominal value. The capacitor’s equivalent series resistance (ESR) usually rises at low temperatures and it ...

Page 14

OUT R1 OUT V = +3. 0.1µF 5µs/DIV. FIGURE 13. LOOPBACK TEST AT 120kbps 5V/DIV OUT R1 OUT V = +3. 0.1µF 2µs/DIV. ...

Page 15

Typical Performance Curves TRANSMITTER AT 250kbps OTHER TRANSMITTERS AT 30kbps 1000 2000 3000 LOAD CAPACITANCE (pF) FIGURE 15. TRANSMITTER OUTPUT VOLTAGE vs LOAD CAPACITANCE 40 ICL3224E ...

Page 16

Die Characteristics SUBSTRATE POTENTIAL (POWERED UP) GND TRANSISTOR COUNT ICL3224E: 937 ICL3226E: 825 ICL3244E: 1109 PROCESS Si Gate CMOS 16 ICL3224E, ICL3226E, ICL3244E ...

Page 17

Shrink Small Outline Plastic Packages (SSOP) N INDEX 0.25(0.010) H AREA E - SEATING PLANE - -C- α 0.10(0.004 0.25(0.010 NOTES: 1. Symbols are defined in ...

Page 18

Small Outline Plastic Packages (SSOP) N INDEX 0.25(0.010) H AREA E - SEATING PLANE - -C- α 0.10(0.004) 0.25(0.010 NOTES: 1. Symbols are defined in the ...

Page 19

Shrink Small Outline Plastic Packages (SSOP) N INDEX 0.25(0.010) H AREA E - SEATING PLANE - -C- α 0.10(0.004) 0.25(0.010 NOTES: 1. Symbols are defined in ...

Page 20

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. 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 ...

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