ICL3217E Просмотр технического описания (PDF) - Intersil

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ICL3217E

+/- 15kV ESD Protected, +3V to +5.5V, Low Power, 250kbps, RS-232 Transmitters/Receivers

Intersil 

®

Data Sheet

ICL3207E, ICL3217E

June 2004

FN4914.5

+/- 15kV ESD Protected, +3V to +5.5V, Low

Power, 250kbps, RS-232

Transmitters/Receivers

The Intersil ICL32X7E devices are 3V to 5.5V powered

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

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

VCC = 3.0V. Additionally, they provide ±15kV ESD

protection (IEC61000-4-2 Air Gap) and ±15kV Human Body

Model protection on transmitter outputs and receiver inputs

(RS-232 pins). Targeted applications are ISDN Terminal

Adaptors, PDAs, Palmtops, peripherals, and notebook and

laptop computers where the low operational, and even lower

standby, power consumption is critical. The ICL3217E’s

efficient on-chip charge pumps, coupled with an automatic

powerdown function, reduces 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 5V systems, and

5V-only systems, and is a lower power, pin-for-pin

replacement for ‘207E and ‘237E type devices.

The ICL3217E 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 ICL3217E 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

ICL32XXE 3V family.

Features

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

• ESD Protection for RS-232 I/O Pins to ±15kV (IEC61000)

• 5V Lower Power Replacement for MAX207E, HIN207E,

HIN237E

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

• Latch-Up Free

• On-Chip Voltage Converters Require Only Four External

0.1µF Capacitors

• RS-232 Compatible with VCC = 2.7V

• Automatic Powerdown (ICC = 1µA, ICL3217E Only)

• 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

• 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)

Pinout

ICL3207E, ICL3217E (SOIC, SSOP)

TOP VIEW

T3OUT 1

T1OUT 2

T2OUT 3

R1IN 4

R1OUT 5

T2IN 6

T1IN 7

GND 8

VCC 9

C1+ 10

V+ 11

C1- 12

24 T4OUT

23 R2IN

22 R2OUT

21 T5IN

20 T5OUT

19 T4IN

18 T3IN

17 R3OUT

16 R3IN

15 V-

14 C2-

13 C2+

PART NUMBER

ICL3207E

ICL3217E

NO. OF

TX

5

5

NO. OF

RX

3

3

TABLE 1. SUMMARY OF FEATURES

NO. OF MONITOR

RX (ROUTB)

DATA RATE

(kbps)

RX ENABLE

FUNCTION?

0

250

NO

0

250

NO

MANUAL

POWER-

DOWN?

NO

NO

AUTOMATIC

POWERDOWN

FUNCTION?

NO

YES

1

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

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Copyright Intersil Americas Inc. 2000, 2001, 2004. All Rights Reserved

All other trademarks mentioned are the property of their respective owners.

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