icl3237e Intersil Corporation, icl3237e Datasheet

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icl3237e

Manufacturer Part Number
icl3237e
Description
?15kv Esd Protected, 1?a Supply-current, +3v To +5.5v, 250kbps Or 1000kbps, Rs-232 Transmitters/receivers
Manufacturer
Intersil Corporation
Datasheet

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±15kV ESD Protected, 10nA Supply-
Current, +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 V
provides
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 = V
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.
NOTE:
1. Data rate is selectable via the MBAUD pin.
ICL3237E
NUMBER
PART
±
15kV ESD protection (IEC61000-4-2 Air Gap and
CC
) are guaranteed at worst case load
NO. OF
Tx.
5
NO. OF
®
Rx.
3
1
Copyright © Intersil Americas Inc. 2002-2004. All Rights Reserved All other trademarks mentioned are the property of their respective owners.
CC
MONITOR Rx.
Data Sheet
= 3.0V. Additionally, it
(R
NO. OF
OUTB
1
)
TABLE 1. SUMMARY OF FEATURES
(NOTE 1)
250/1000
(kbps)
DATA
RATE
1-888-INTERSIL or 321-724-7143
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Rx. ENABLE
FUNCTION?
Features
• ESD Protection For RS-232 I/O Pins to
• 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 V
• Latch-Up Free
• On-Chip Voltage Converters Require Only Four External
• 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
• Pb-free available
Applications
• Any System Requiring RS-232 Communication Ports
YES
Capacitors
- Battery Powered, Hand-Held, and Portable Equipment
- Laptop Computers, Notebooks, Palmtops
- Modems, Printers and other Peripherals
- Data Cradles and Cables
- Cellular/Mobile Phone
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
OUTPUT?
July 2004
READY
NO
MANUAL
POWER-
CC
DOWN?
YES
= 2.7V
ICL3237E
±
15kV (IEC61000)
POWERDOWN
AUTOMATIC
FUNCTION?
FN6014.2
NO

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icl3237e Summary of contents

Page 1

... CC 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 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 ...

Page 2

... Pinout ICL3237E (SSOP) TOP VIEW C2+ 1 GND 2 C2 OUT T2 6 OUT T3 7 OUT OUT OUT EN 13 SHDN 14 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). ...

Page 3

... Typical Operating Circuit NOTE 4 TTL/CMOS LOGIC LEVELS TO CONTROL LOGIC NOTES: 3. THE NEGATIVE TERMINAL OF C CAN BE CONNECTED TO EITHER FOR V = 3.15V (3.3V -5%), USE ICL3237E ICL3237E C +3.3V + 0.1µ C1 0.1µ C2+ + 0.1µ C2 ...

Page 4

... Moisture Sensitivity (see Technical Brief TB363) SSOP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Level 1 Maximum Junction Temperature (Plastic Package 150 Maximum Storage Temperature Range . . . . . . . . . . -65 Maximum Lead Temperature (Soldering 10s 300 (Lead Tips Only) +0.3V CC Operating Conditions Temperature Range ICL3237EC ICL3237EI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 = 3.15V to 5.5V 0.1µ TEST CONDITIONS = 3 ...

Page 5

... IEC61000-4-2 Air Gap Discharge IEC61000-4-2 Contact Discharge All Other Pins Human Body Model NOTES: 6. Skew is measured at the input switching points (1.4V). 7. These inputs utilize a positive feedback resistor. The input current is negligible when the input is at either supply rail. 5 ICL3237E = 3.15V to 5.5V 0.1µ ...

Page 6

... Detailed Description The ICL3237E operates from a single +3V to +5.5V supply, guarantees a 1Mbps minimum data rate (MBAUD = V requires only four small external 0.1µF (0.22µF for V = 3.0V) capacitors, features low power consumption, CC and meets all EIA/TIA-232 and V.28 specifications. The circuit is divided into three sections: The charge pump, the transmitters, and the receivers ...

Page 7

... Active High-Z Active High-Z MegaBaud Selection normal operating mode (MBAUD = GND), the ICL3237E transmitters guarantee a 250kbps data rate with worst-case CURRENT FLOW loads of 3kΩ in parallel with 1000pF. This provides compatibility with PC-to-PC communication software, such as Laplink™. For higher speed serial communications, the ICL3237E features MegaBaud operation ...

Page 8

... Operation Down to 2.7V ICL3237E transmitter outputs meet RS-562 levels ( the full data rate, with V as low as 2.7V. RS-562 levels CC typically ensure inter operability with RS-232 devices. Transmitter Outputs when Exiting Powerdown Figure 4 shows the response of two transmitter outputs when exiting powerdown mode. As they activate, the two transmitter outputs properly go to opposite RS-232 levels, with no glitching, ringing, nor undesirable transients ...

Page 9

... Interconnection with 3V and 5V Logic The ICL3237E directly interfaces with 5V CMOS and TTL logic families. Nevertheless, with the ICL32XX at 3.3V, and the logic supply at 5V, AC, HC, and CD4000 outputs can drive ICL32XX inputs, but ICL32XX outputs do not reach the minimum V for these logic families. See Table 4 for more IH information ...

Page 10

... FIGURE 10. LOW SPEED SLEW RATE vs LOAD CAPACITANCE 55 MBAUD = GND 1000 2000 3000 0 LOAD CAPACITANCE (pF) FIGURE 12. LOW SPEED SUPPLY CURRENT vs LOAD CAPACITANCE WHEN TRANSMITTING DATA 10 ICL3237E 3.3V OUT V - OUT 4000 5000 FIGURE 9. HIGH SPEED TRANSMITTER OUTPUT VOLTAGE 90 ...

Page 11

... Typical Performance Curves Die Characteristics SUBSTRATE POTENTIAL (POWERED UP): GND TRANSISTOR COUNT: 619 PROCES Si Gate CMOS 11 ICL3237E 3.3V (Continued 3.5 NO LOAD ALL OUTPUTS STATIC 3.0 2.5 2.0 1.5 1.0 0.5 0 2.5 3.0 3.5 4.0 4.5 SUPPLY VOLTAGE (V) FIGURE 14. SUPPLY CURRENT vs SUPPLY VOLTAGE 5.0 5.5 6.0 ...

Page 12

... 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. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 12 ICL3237E M28.209 28 LEAD SHRINK SMALL OUTLINE PLASTIC PACKAGE M ...

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