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Details, datasheet, quote on part number:ICL3237EIA
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| Part: | ICL3237EIA |
| Category: | Interface and Interconnect => RS-232 (EIA-232) |
| Description: | +/-15KV Esd Protected, 1 Microamp Supply-Current, +3V to +5.5V, 250kbps or 1000kbps, RS-232 Transmitters/receivers |
| Company: | Intersil Corporation |
| Datasheet: | Download ICL3237EIA datasheet File size : 302 kB |
| Request For quote: | Find where to buy ICL3237EIA
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Datasheet text preview:
®
ICL3237E
D a ta Sheet M ar c h 2003 FN6014.1
±15kV ESD Protected, 10nA SupplyCurrent, +3V to +5.5V, 250k/1Mbps, RS-232 Transmitters/Receivers
The Intersil ICL3237E 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. Additionally, it provides ±15kV ESD protection (IEC61000-4-2 Air Gap and Human Body Model) on transmitter outputs and receiver inputs (RS-232 pins). 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 on-chip charge pumps, coupled with the manual powerdown function, reduce the standby supply current to a 10nA 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. The ICL3237E is fully compatible with 3.3V only systems, mixed 3.3V and 5.0V systems, and 5.0V only systems. The ICL3237E 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.
Features
· ESD Protection For RS-232 I/O Pins to ±15kV (IEC61000) · Pin Compatible Replacement for MAX3237E · Pin Selectable, Guaranteed Data Rate . . 250kbps/1Mbps · Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V · RS-232 Compatible with VCC = 2.7V · Latch-Up Free · On-Chip Voltage Converters Require Only Four External Capacitors · Manual Powerdown Feature · Flow Through Pinout · Rx and Tx Hysteresis For Improved Noise Immunity · Rx Active in Powerdown; Separate Rx Enable Pin · Guaranteed Minimum Slew Rate . . . . . . . 6V/µs or 24V/µs · Wide Power Supply Range . . . . . . . Single +3V to +5.5V · Low Supply Current in Powerdown State. . . . . . . . . .10nA
Applications
· Any System Requiring RS-232 Communication Ports - Battery Powered, Hand-Held, and Portable Equipment - Laptop Computers, Notebooks, Palmtops - Modems, Printers and other Peripherals - Data Cradles and Cables - Cellular/Mobile Phone
Ordering Information
TEMP. PART NUMBER RANGE (oC) ICL3 237ECA ICL3 237ECA-T ICL3 237EIA ICL3 237EIA-T 0 to 70 0 to 70 -40 to 85 -40 to 85 PACKAGE 28 Ld SSOP Tape and Reel 28 Ld SSOP Tape and Reel PKG. NO. M 2 8 . 2 09 M28.2 09 M 2 8 . 2 09 M28.2 09 TABLE 1. SUMMARY OF FEATURES NO. OF MONITOR Rx. (ROUTB) 1 (NOTE 1) DATA RATE (kbps) 250/1000 MANUAL POWERDOWN? YES AUTOMATIC POWERDOWN FUNCTION? NO
PART NUMBER ICL3237E NOTE:
NO. OF NO. OF Tx. Rx. 5 3
Rx. ENABLE FUNCTION? YES
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 registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2003. All Rights Reserved All other trademarks mentioned are the property of their respective owners.
ICL3237E Pinout
ICL3237E (SSOP) TOP VIEW
C2+ 1 GND 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 MBAUD
V- 4 T1OUT 5 T2OUT 6 T3OUT 7 R1IN 8 R2IN 9 T4OUT 10 R3IN 11 T5OUT 12 EN 13 SHDN 14
Pin Descriptions
PIN VCC V+ VGND C1+ C 1C2+ C 2TIN TOUT RIN ROUT ROUTB EN SHDN MBAUD NOTE: 2. These input pins incorporate positive feedback resistors. Once the input is driven to a valid logic level, the feedback resistor maintains that logic level until VCC is removed. 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 (Note 2). ±15kV ESD Protected, RS-232 level (nominally ±5.5V) transmitter outputs. ±15kV ESD Protected, RS-232 compatible receiver inputs. TTL/CMOS level receiver outputs. TTL/CMOS level, noninverting, always enabled receiver output. Active low receiver enable control; doesn't disable ROUTB output (Note 2). Active low input to shut down transmitters and on-board power supply, to place device in low power mode (Note 2). Input low selects 250kbps data rate, and input high selects 1Mbps data rate (Note 2). FUNCTION
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ICL3237E Typical Operating Circuit
ICL 3237E
C3 (OPTIONAL CONNECTION, NOTE 3) +3.3V 26 VCC V+ 4 + 27 + C3 0.1µF NOTE 4 C4 0.1µF + T1 O U T VT1 5 6 7 T2 O U T T3 O U T T4 O U T T5 O U T RS-232 LEVELS 10 12 8 R1IN R1 R2OUT 20 R2 18 R3OUT R3 13 14 15 EN 5k 5k 11 R3IN 5k 9 R2IN RS-232 LEVELS + 0.1µF 28 + 25 1 + 3 24 C1+ C1C2+ C2-
C1 0.1µF NOTE 4 C2 0.1µF
T1IN
T2IN T3IN T4IN T5IN TTL/ CMOS LOGIC LEVELS
23 22
T2
T3 T4
19 17
T5
16 R1OUTB 21 R1OUT
V CC TO CONTROL LOGIC
SHDN MBAUD GND 2
NOTES: 3. THE NEGATIVE TERMINAL OF C3 CAN BE CONNECTED TO EITHER VCC OR GND. 4. FOR VCC = 3.15V (3.3V -5%), USE C1 - C4 = 0.1µF OR GREATER. FOR VCC = 3.0V (3.3V -10%), USE C1 - C4 = 0.22µF.
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