• Wide Power Supply Range: +2.7V to +5.5V

• Very Low, 300µA Supply Curent

= 3.0V

• Ultra Small QFN Package

- 40% smaller package than 20-lead TSSOP

Key Features

16

Intersil Signal Path Products  2012  www.intersil.com

5mm x 5mm QFN Package

0.9mm Ultra-Thin Profile

ISL4221E

13

VCC

T1OUT

T1IN

T1

0.1µF

+0.1µF

+

0.1µF

9

11

16

2

1

5

V+

V-

C1+

C1-

C2+

C2-

+

0.1µF

3

4

R1OUT

R1IN

R1

6

7

5kΩ

C1

C2

+ C3

C4

EN

15

GND

+3.3V

+

0.1µF

12

TTL/CMOS

LOGIC

RS-232

LEVELS

FORCEON

FORCEOFF

10

14

VCC

8

INVALID

TO POWER

CONTROL LOGIC

LEVELS

±15kV HBM and IEC61000

ESD Protection

+3V to +5V, RS-232 IEC-61000 ESD-Protected Transceivers in QFN Package

Device

No. of Tx.

No. of Rx.

Date Rate (kbps)

Rx. Enable Function?

Manual Power-down?

Automatic Power-down?

ISL4221E

1

1

250

Yes

Yes

Yes

No

ISL3232E

2

2

250

No

No

No

No

ISL4223E

2

2

250

Yes

Yes

Yes

No

ISL4260E

3

2

250

No

Yes

Yes

No

ISL4270E

3

3

250

No

Yes

Yes

No

ISL4238E

5

3

250

No

Yes

Yes

No

ISL4243E

3

5

250

No

Yes

Yes

No

ISL3241E

3

5

250

Yes

Yes

No

Yes

ISL3243E

3

5

250

No

Yes

No

Yes

Interface

+3V to +5.5V, ESD-Protected Transmitters/Receivers

Device

# of Tx # of Rx

High

ESD

Manual

Shutdown

Auto

Shutdown Rx Disable

Data Rate

(Mbps)

Cap. Value

(µF)

(mA)

(µA)

(V)

Package

ICL3207E

5

3

Yes

No

No

No

0.3

0.1

0.3

N/A

3 to 5.5

24 Ld SOIC, 24 Ld SSOP

ICL3217E

5

3

Yes

No

Basic

No

0.3

0.1

0.3

1

3 to 5.5

24 Ld SOIC, 24 Ld SSOP

ICL3221E

1

1

Yes

Yes

Basic

Yes

0.5

0.1

0.3

1

3 to 5.5

16 Ld SSOP, 16 Ld TSSOP

ICL3221EM

1

1

Yes

Yes

Basic

Yes

0.5

0.1

0.3

1

0 to 3.6

16 Ld TSSOP

ICL3222E

2

2

Yes

Yes

No

Yes

0.5

0.1

0.3

1

3 to 5.5

18 Ld SOIC, 20 Ld SSOP, 20 Ld TSSOP

ICL3223E

2

2

Yes

Yes

Basic

Yes

0.5

0.1

0.3

1

3 to 5.5

20 Ld SSOP, 20 Ld TSSOP

ICL3224E

2

2

Yes

Yes

Enhanced

No

0.5

0.1

0.3

1

3 to 5.5

20 Ld SSOP

ICL3225E

2

2

Yes

Yes

Enhanced

No

1

0.1

0.3

1

3 to 5.5

20 Ld PDIP, 20 Ld SSOP

ICL3226E

1

1

Yes

Yes

Enhanced

No

0.5

0.1

0.3

1

3 to 5.5

16 Ld SSOP

ICL3227E

1

1

Yes

Yes

Enhanced

No

1

0.1

0.3

1

3 to 5.5

16 Ld SSOP

ICL3232E

2

2

Yes

No

No

No

0.5

0.1

0.3

N/A

3 to 5.5

16 Ld SOIC, 16 Ld SSOP, 16 Ld TSSOP,

20 Ld TSSOP

ICL3237E

5

3

Yes

Yes

No

Yes

0.5/1.0

0.1

0.3

0.01

3 to 5.5

28 Ld SSOP

ICL3238E

5

3

Yes

Yes

Enhanced

No

0.5

0.1

0.3

0.01

3 to 5.5

28 Ld SSOP, 28 Ld TSSOP

ICL3241E

3

5

Yes

Yes

No

Yes

0.5

0.1

0.3

1

3 to 5.5

28 Ld SOIC, 28 Ld SSOP, 28 Ld TSSOP

ICL3243E

3

5

Yes

Yes

Basic

No

0.5

0.1

0.3

1

3 to 5.5

28 Ld SOIC, 28 Ld SSOP, 28 Ld TSSOP

ICL3244E

3

5

Yes

Yes

Enhanced

No

0.5

0.1

0.3

1

3 to 5.5

28 Ld SSOP

ICL3245E

3

5

Yes

Yes

Enhanced

No

1

0.1

0.3

1

3 to 5.5

28 Ld SOIC, 28 Ld SSOP, 28 Ld TSSOP

RS-232 Transceiver: ISL4221E

RS-232 Transceiver

in Ultra Small

QFN Package

Typical Operating Circuits

Intersil offers a broad portfolio of robust, wide operating voltage range, RS-232 transceivers. There are many

transmitter and receiver combinations in standard inline packages plus space saving QFN package options as well.

Most operate over a wide 2.7V to 5.5V supply range with a variety of power down modes.