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| 1μA Supply-Current, +3V to +5.5V, 250kbps or 1000kbps, RS-232 Transmitters/Receivers |
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| Ordering Information |
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 iBuy direct from Intersil
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 iBuy direct - out of stock
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 Request samples
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 Check distributor inventory
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Available in RoHS/Pb-Free
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Part No. |
Design-In
Status |
Temp. |
Package |
MSL |
Price
US $ |
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| ICL3237CA-T |
Active |
Comm |
28 Ld SSOP T+R |
1 |
2.39 |
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| ICL3237CAZ |
Active |
Comm |
28 Ld SSOP |
3 |
1.99 |
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| ICL3237CAZ-T |
Active |
Comm |
28 Ld SSOP T+R |
3 |
1.99 |
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| ICL3237IAZ |
Active |
Ind |
28 Ld SSOP |
3 |
2.20 |
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| ICL3237IAZ-T |
Active |
Ind |
28 Ld SSOP T+R |
3 |
2.20 |
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| ICL3237CA |
InActive |
Comm |
28 Ld SSOP |
1 |
N/A |
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| ICL3237IA |
InActive |
Ind |
28 Ld SSOP |
1 |
N/A |
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| ICL3237IA-T |
To Be
Discontinued |
Ind |
28 Ld SSOP T+R |
1 |
2.20 |
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| The price listed is the manufacturer's suggested retail price for quantities of 1K units. However, prices in today's market are fluid and may change without notice. |
| MSL = Moisture Sensitivity Level - per IPC/JEDEC J-STD-020 |
| SMD = Standard Microcircuit Drawing |
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 Description |
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The Intersil ICL3237 contains 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 cell phones, PDAs, Palmtops, and notebook and laptop computers where the low operational, and even lower standby, power consumption is critical. Efficient onchip charge pumps, coupled with manual powerdown function, 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 1Mbps (MBAUD = VCC) 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 ICL3237 is a 5 driver, 3 receiver device that also includes a noninverting always-active receiver for "wake-up" capability.
Table 1 summarizes the features of the device represented by this data sheet, while Application Note AN9863 summarizes the features of each device comprising the ICL32XX 3V family. |
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 Key Features |
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±15kV ESD Protected (Human Body Model)
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Drop in Replacement for MAX3237
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Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V
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Latch-Up Free
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On-Chip Voltage Converters Require Only Four External Capacitors
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Manual Powerdown Features
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Flow Through Pinout
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Receiver Hysteresis For Improved Noise Immunity
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Pin Selectable Data Rate
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Guaranteed Minimum Data Rate 250kbps/1Mbps
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Guaranteed Minimum Slew Rate 6V/µs or 24V/µs
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Wide Power Supply Range Single +3V to +5.5V
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Low Supply Current in Powerdown State 1µA
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Pb-Free Plus Anneal Available (RoHS Compliant)
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| Related Documentation |
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 Application Note(s): |
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 Datasheet(s): |
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 Technical Homepage: |
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 Design Model(s): |
| | | | | |  Parametric Data | | | # of Tx | | 5 | | | # of Rx | | 3 | | | High ESD | | No | | | Manual Shutdown | | Yes | | | Auto Shutdown | | No | | | Rx Disable | | Yes | | | Data Rate (Mbps) | | 0.5/1.0 | | | Cap. Value (µF) | | .1 | | | IS Enabled (mA) | | .3 | | | IS Disabled (µA) | | 1 | | | VCC Range (V) | | 3 to 5.5 | | | VCC (min) (V) | | 3 | | | VCC (max) (V) | | 5.5 | |
| | |  Application Block Diagrams | | | | | | | | | | 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 Phone
| | | | | | | | | HIN207 | | +5V Powered RS-232 Transmitters/Receivers with 0.1μF External Capacitors | | | HIN237 | | +5V Powered RS-232 Transmitters/Receivers | | | ICL3207 | | Low Power, +3V To +5.5V, 250kbps, RS-232 Transmitters/Receivers | | | ICL3217 | | Low Power, +3V To +5.5V, 250kbps, RS-232 Transmitters/Receivers | | | ICL3225 | | 1μA, +3V to +5.5V, 1Mbps, RS-232 Transceivers with Enhanced Automatic Powerdown | | | ICL3238 | | 1μA, +3V To +5.5V, 250kbps, RS-232 Transceivers With Enhanced Automatic Powerdown | | | ICL3245 | | 1mA, +3V to +5.5V, 1Mbps, RS-232 Transceivers with Enhanced Automatic Powerdown | |
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