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Details, datasheet, quote on part number:ICL3238CA
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| Part: | ICL3238CA |
| Category: | Interface and Interconnect => RS-232 (EIA-232) |
| Description: | 1 Microamp, +3V to +5.5V, 250kbps, RS-232 Transceivers With Enhanced Automatic Powerdown |
| Company: | Intersil Corporation |
| Datasheet: | Download ICL3238CA datasheet File size : 514 kB |
| Request For quote: | Find where to buy ICL3238CA
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Datasheet text preview:
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ICL3224, ICL3226, ICL3238, ICL3244
Da ta Sheet N ov e m be r 2002 FN 4 8 76 . 6
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 VCC = 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 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 powersupply 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.
Features
· ±15kV ESD Protected (Human Body Model) · Manual and Enhanced Automatic Powerdown Features · Drop in Replacements for MAX3224, MAX3226, MAX3238, MAX3244 · Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V · Latch-Up Free · RS-232 Compatible with VCC = 2.7V · 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 · 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 - Data Cradles
Related Literature
· Technical Brief TB363 "Guidelines 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 FEATURES PART NUMBER ICL3224 I C L3226 I C L3238 I C L3244 NO. OF NO. OF Tx. Rx. 2 1 5 3 2 1 3 5 NO. OF MONITOR Rx. (ROUTB) 0 0 1 1 DAT A RATE (kbps) 250 250 250 250 Rx. ENABLE FUNCTION? NO NO NO NO READY OUTPUT? YE S YE S NO NO M ANUAL POWERDOWN? YES YES YE S YE S E NHANCE D AUTOMATIC POWERDOWN YES YES Y ES Y ES
1
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 registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2002. All Rights Reserved All other trademarks mentioned are the property of their respective owners.
ICL3224, ICL3226, ICL3238, ICL3244 Ordering Information
(NOTE 1) PART NO. I CL3224CA I CL3224I A I CL3224CP I CL3226CA I CL3226I A I CL3238CA I CL3238I A I CL3244CA TEMP. RANGE (oC) 0 to 70 -40 to 85 0 to 70 0 to 70 -40 to 85 0 to 70 -40 to 85 0 to 70 P ACKAGE 20 Ld SSOP 20 Ld SSOP 20 Ld PDIP 16 Ld SSOP 16 Ld SSOP 28 Ld SSOP 28 Ld SSOP 28 Ld SSOP PKG. NO. M 20. 209 M 20. 209 E 20. 3 M 16. 209 M 16. 209 M 28. 209 M 28. 209 M 28. 209
Ordering Information
(NOTE 1) PART NO. ICL3244IA ICL3244CB ICL3244IB ICL3244CV ICL3244IV NOTE: TEMP. RANGE (oC) -40 to 85 0 to 70 -40 to 85 0 to 70 -40 to 85
(Continued) P ACKAGE PKG. NO. M28. 209 M28. 3 M28. 3 M2 8 . 1 7 3 M2 8 . 1 7 3
28 Ld SSOP 28 Ld SOIC 28 Ld SOIC 28 Ld TSSOP 28 Ld TSSOP
1. Most surface mount devices are available on tape and reel; add "-T" to suffix.
Pinouts
ICL3224 (PDIP, SSOP) TOP VIEW
READY 1 C1+ 2 V+ 3 20 FORCEOFF 19 VCC 18 GND 17 T1OUT 16 R1IN 15 R1OUT 14 FORCEON 13 T1IN 12 T2IN 11 INVALID READY 1 C1 + 2 V+ 3 16 FORCEOFF 15 VCC 14 GND 13 T1OUT 12 FORCEON 11 T1IN 10 INVALID 9 R1 O U T
ICL3226 (SSOP) TOP VIEW
C1 - 4 C2+ 5 C2 - 6 V- 7 T2OUT 8 R2IN 9 R2OUT 10
C1- 4 C2 + 5 C2- 6 V- 7 R1IN 8
ICL3238 (SSOP) TOP VIEW
C2 + 1 G ND 2 C23 28 C1+ 27 V+ 26 VCC 25 C124 T1IN 23 T2IN 22 T3IN 21 R1OUT 20 R2OUT 19 T4IN 18 R3OUT 17 T5IN 16 R1OUTB 15 INVALID
ICL3244 (SOIC, SSOP, TSSOP) TOP VIEW
C2 + 1 C2- 2 V3 28 C1+ 27 V+ 26 VCC 25 GND 24 C123 FORCEON 22 FORCEOFF 21 INVALID 20 R2OUTB 19 R1OUT 18 R2OUT 17 R3OUT 16 R4OUT 15 R5OUT
V- 4 T1OUT 5 T2OUT 6 T3OUT 7 R1IN 8 R2IN 9 T4OUT 10 R3IN 11 T5OUT 12 FORCEON 13 FORCEOFF 14
R1IN 4 R2IN 5 R3IN 6 R4IN 7 R5IN 8 T1OUT 9 T2OUT 10 T3OUT 11 T3IN 12 T2IN 13 T1IN 14
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ICL3224, ICL3226, ICL3238, ICL3244 Pin Descriptions
PIN VCC V+ VG ND C1+ C1C2+ C2TIN TOUT R IN ROUT ROUTB INVALID REA D Y 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) transmitter outputs. RS-232 compatible receiver inputs. TTL/CMOS level receiver outputs. TTL/CMOS level, noninverting, always enabled receiver outputs. Active low output that indicates if no valid RS-232 levels are present on any receiver input. Active high output that indicates when the ICL32XX is ready to transmit (i.e., V- -4V) FUNCTION
FORCEOFF Active low to shut down transmitters and on-chip power supply. This overrides any automatic 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
ICL3224
+3.3V + 0.1µF 2 + 4 5 + 6 13 T1IN 12 TTL/CMOS LOGIC LEVELS T2IN 15 R1OUT 10 R2 O U T 1 14 R2 READY FORCEON GND 18 5k 20 11 R1 5k 9 R2IN 12 16 R1IN C1+ C1C2+ C2T1 T2 +3.3V 19 VC C V+ 3 + C3 0.1µF C4 +0.1µF T1OUT 8 T2OUT RS-232 LEVELS C1 0.1µF C2 0.1µF + 0.1µF C1+
ICL3226
15 VC C V+ 3 + C3 0.1µF C4
C1 0.1µF C2 0.1µF
V- 7 17
C15 C2+ + 6 C211 T1 T1IN 9
2 + 4
V- 7 13
+ 0.1µF T1OUT
TTL/CMOS LOGIC LEVELS
8 R1 READY FORCEOFF FORCEON GND 14 INVALID 5k R1IN
RS-232 LEVELS
R1OUT 1
16 10
VC C TO POWER CONT ROL LOGIC
FORCEOFF INVALID
VCC TO POWER CONTROL LOGIC
3
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