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Details, datasheet, quote on part number:ICL3237
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| Part: | ICL3237 |
| Category: | Analog & Mixed-Signal Processing |
| Description: | 1 Microamp Supply-Current, +3V to +5.5V, 250kbps or 1000kbps, RS-232 Transmitters/receivers |
| Company: | Intersil Corporation |
| Datasheet: | Download ICL3237 datasheet File size : 253 kB |
| Request For quote: | Find where to buy ICL3237
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Datasheet text preview:
ICL3237
TM
Da ta S h eet
J ul y 2 0 0 1
Fi l e N u m b er
60 03. 1
1 Microamp Supply-Current, +3V to +5.5V, 1Mbps, RS-232 Transmitters/Receivers
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 pum ps, 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 w ell. Data rates greater than 1Mbps (MBAUD = VCC ) are guaranteed at worst case load conditions. This family is fully compatible with 3.3V only systems, m ixed 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 sum marizes the features of the device represented by this data sheet, while Application Note AN9863 summ arizes the features of each device comprising the ICL32XX 3V fam ily.
Features
· Drop in Replacement for MAX3237 · M eets EIA/TIA-232 and V.28/V.24 Specifications at 3V · Latch-Up Free · On-Chip Voltage Converters R equire Only Four External Capacitors · M anual Powerdown Features · Flow Through Pinout · Receiver Hysteresis For Improved Noise Imm unity · Pin Selectable Data Rate · Guaranteed M inimum Data Rate . . . . . . . 250kbps/1Mbps · Guaranteed M inimum Slew Rate . . . . . . . 6V/µs or 24V/µs · Wide Power Supply Range . . . . . . . Single +3V to +5.5V · Low Supply Current in Powerdown State . . . . . . . . . . . 1µA
itle L32 ) bjec croa pply rren 3V .5V, bps S2 ns tters ecei rs) utho ) eyw s tersi rpor on, ico ucto ow wer, h e d, ltage V, ,
Applications
· Any System Requiring RS-232 Com munication Ports - Battery Powered, Hand-Held, and Portable Equipment - Laptop Computers, Notebooks, Palmtops - Modem s, Printers and other Peripherals - Digital Cameras - Cellular/Mobile Phone
Ordering Information
P ART NO. ICL3237CA ICL3237CA-T ICL3237IA ICL3237IA-T TEMP. RANGE ( oC) 0 to 70 0 to 70 -4 0 t o 8 5 -4 0 t o 8 5 PACKAGE 28 Ld SS OP Tape and Reel 28 Ld SS OP Tape and Reel PKG. NO. M28.209 M28.209 M28.209 M28.209
Related Literature
· Technical Brief TB363 "G uidelines for Handling and Processing Moisture Sensitive Surface Mount Devices (SMDs)" · AN9863 "3V to +5.5V, 250k-1Mbps, RS-232 Transmitters/Receivers"
TABLE 1. SUMMARY OF FEATUR ES NO. O F MONITOR Rx. (R OUTB) 1 ( NOTE 1) DA TA RAT E (kbps) 250/1000 M ANUAL POWERDOWN? Y ES AUTOMATIC POWERDOWN FUNCTION? NO
PART NUMBER ICL3237 NOTE:
NO. O F NO. O F Tx. Rx. 5 3
Rx. ENABLE FUNCTION? Y ES
READY OUTPUT? NO
1. Data rate is selectable via the MBAUD pin.
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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 Americas Inc. Copyright © Intersil Americas Inc. 2001, All Rights Reserved
ICL3237 Pinout
ICL3237 (SSOP ) TOP VIE W
C2+ 1 G ND 2 C23 28 C1+ 27 V+ 26 VCC 25 C124 T1IN 23 T2IN 22 T3IN 21 R1 OUT 20 R2 OUT 19 T4IN 18 R3 OUT 17 T5IN 16 R1 OUTB 15 MB AUD
V- 4 T1 OUT 5 T2 OUT 6 T3 OUT 7 R1IN 8 R2IN 9 T4OUT 10 R3IN 11 T5 OUT 12 EN 13 SHDN 14
Pin Descriptions
PIN VCC V+ VG ND C 1+ C1C 2+ C2TIN TOUT RIN ROUT ROUTB EN S HDN MBA UD System Power Supply Input ( 3.0V to 5.5V). Internally Generated Positive Transmitter Supply (+5.5V ). Internally Generated Negative Transmitter Supply (- 5.5V). Ground Connection. External Capacitor (Voltage Doubler) is connected to this lead. External Capacitor (Voltage Doubler) is connected to this lead. External Capacitor (Voltage Inverter) is connected to this lead. External Capacitor (Voltage Inverter) is connected to this lead. TTL/CMOS Compatible Transmitter Inputs. RS-232 level (nominally ±5.5V) tr ansmitter outputs. RS-232 Compatible Receiver Inputs. TTL/C MOS Level Receiver Outputs. TTL/C MOS Level, Noninverting, Always Enabled Receiver Output. Active Low Receiver Enable Control; doesn't disable ROUTB output. Active Low Input to Shutdown Transmitters and On-Boar d P ower Supply, to place device in low power mode. Input Low selects 250kbps data rate, and input high selects 1Mbps data rate. FUNCTION
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ICL3237 Typical Operating Circuit
ICL3237
C3 (OPTIONAL CONNECTION, NOTE) +3.3V 26 VCC 27 V+ 4 + C3 0.1µF + VC2T1 5 T1 OUT 23 T2IN 22 T3IN 19 T4IN 17 T5IN TTL/CMOS LOGI C LEVELS R1OUTB 21 R1OUT R1 20 R2OUT R2 18 R3OUT R3 13 EN 5k 5k 11 R3IN 5k 9 R2IN RS-232 LEVELS 8 R1IN 16 T5 12 T5 OUT T4 10 T4 OUT T3 7 T3 OUT T2 6 T2 OUT RS-232 LEVELS C4 0.1µF + GND 2 + 0 .1µF 28 + 25 1 + 3 24 T1IN C1+ C1C2+
C1 0.1 µF C2 0.1 µF
VCC TO CONTROL LOGIC
14 SHDN 15 MBAUD
NOTE: THE NEGATIVE TERMINAL OF C3 CAN BE CONNECTED TO EITH ER VCC OR GND.
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