1

®

FN4892.5

ICL3207, ICL3217

Low Power, +3V to +5.5V, 250kbps,

RS-232 Transmitters/Receivers

The Intersil ICL32X7 devices are 3.0V to 5.5V powered

RS-232 transmitters (five)/receivers (three) which meet

ElA/TIA-232 and V.28/V.24 specifications, even at

Adaptors, PDAs, Palmtops, peripherals, and notebook and

laptop computers where the low operational, and even lower

standby, power consumption is critical. The ICL3217’s

efficient on-chip charge pumps, coupled with an automatic

powerdown function, reduces the standby supply current to

a 1

µA 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, and is a lower power, pin-for-pin

replacement for ‘207 and ‘237 type devices.

The ICL3217 features an automatic powerdown function

which powers down the on-chip power-supply and driver

circuits. This occurs when an attached peripheral device is

shut off or the RS-232 cable is removed, conserving system

power automatically, without changes to the hardware or

operating system. The ICL3217 powers up again when a

valid RS-232 voltage is applied to any 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

• Pb-free Available as an Option (see Ordering Info)

• 5V Lower Power Replacement for MAX207, HIN207,

HIN237

• Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V

• Latch-Up Free

• On-Chip Voltage Converters Require Only Four External

0.1

µF Capacitors

• 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

Applications

• Any System Requiring RS-232 Communication Ports

- Battery Powered, Hand-Held, and Portable Equipment

- Laptop Computers, Notebooks, Palmtops

- Modems, Printers and other Peripherals

- ISDN Terminal Adaptors and Set Top Boxes

Related Literature

• Technical Brief TB363 “Guidelines for Handling and

Processing Moisture Sensitive Surface Mount Devices

(SMDs)”

TABLE 1. SUMMARY OF FEATURES

PART NUMBER

NO. OF

Tx.

NO. OF

Rx.

NO. OF MONITOR

DATA RATE

(kbps)

Rx. ENABLE

FUNCTION?

MANUAL

POWER-

DOWN?

AUTOMATIC

POWERDOWN

FUNCTION?

ICL3207

5

3

0

250

NO

NO

NO

ICL3217

5

3

0

250

NO

NO

YES

Data Sheet

July 2004

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

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