ISL4221EIRZ Intersil, ISL4221EIRZ Datasheet

ISL4221EIRZ

Manufacturer Part Number

ISL4221EIRZ

Description

IC TXRX 1TX/1RX 3V RS-232 16-QFN

Manufacturer

Intersil

Type

Transceiverr

Datasheet

1.ISL3232EIRZ.pdf (14 pages)

Specifications of ISL4221EIRZ

Number Of Drivers/receivers

2/2

Protocol

RS232

Voltage - Supply

2.7 V ~ 5.5 V

Mounting Type

Surface Mount

Package / Case

16-VQFN Exposed Pad, 16-HVQFN, 16-SQFN, 16-DHVQFN

Package

16QFN EP

Data Transmission Topology

Point-to-Point

Interface Standards

ElA/TIA-232|RS-232|V.24|V.28

Data Rate

0.5 Mbps

Function

Line Transmitter/Receiver

Number Of Transmitters

Transmitter Signal Type

Single-Ended

Transmitter Communication Type

RS-232

Driving Mode

3-State

Typical Single Supply Voltage

3.3|5 V

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

ISL4221EIRZ

Manufacturer:

Intersil

Quantity:

915

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

ISL4221EIRZ

Manufacturer:

Intersil

Quantity:

291

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QFN Packaged, ±15kV ESD Protected,

+2.7V to +5.5V, 150nA, 250kbps, RS-232

Transmitters/Receivers

The Intersil ISL3232E and ISL4221E, ISL4223E devices are

2.7V to 5.5V powered RS-232 transmitters/receivers which

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

(IEC61000-4-2 Air Gap and Human Body Model) on

transmitter outputs and receiver inputs (RS-232 pins).

Targeted applications are PDAs, Palmtops, and hand-held

products where the low operational, and even lower standby,

power consumption is critical. Efficient on-chip charge pumps,

coupled with manual and automatic power-down functions,

reduce the standby supply current to a 150nA trickle. Tiny

5mmx5mm Quad Flat No-Lead (QFN) 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.

The ISL4221E is a 1 driver, 1 receiver device and the

ISL3232E and ISL4223E are 2 driver, 2 receiver devices

that, coupled with the 5mmx5mm QFN package, provide the

industry’s smallest, lowest power serial port suitable for

PDAs, and hand-held applications. The 5mmx5mm QFN

requires 40% less board area than a 20 Ld TSSOP, and is

nearly 20% thinner.

The ISL4221E, ISL4223E versions feature an automatic

power-down function that 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. It powers up again when

a valid RS-232 voltage is applied to any receiver input.

Table 1 summarizes the features of the IC’s, while

Application Note AN9863 summarizes the features of each

device comprising the 3V RS-232 family.

PART NUMBER

ISL4221E

ISL3232E

ISL4223E

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

NO. OF

Tx.

NO. OF

Rx.

AVAILABLE?

QFN PKG.

Data Sheet

YES

TABLE 1. SUMMARY OF FEATURES

DATA RATE

1-888-INTERSIL or 1-888-468-3774

(kbps)

250

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

Rx. ENABLE

FUNCTION?

Features

• Available in Near Chip Scale QFN (5mmx5mm) Package,

• ESD Protection for RS-232 I/O Pins to

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

• RS-232 Compatible with V

• On-Chip Voltage Converters Require Only Four External

• Manual and Automatic Power-down Features (Except

• Receiver Hysteresis For Improved Noise Immunity

• Guaranteed Minimum Data Rate . . . . . . . . . . . . . 250kbps

• Wide Power Supply Range . . . . . . Single +2.7V to +5.5V

• Low Supply Current in Power-down State . . . . . . . .150nA

• Pb-Free Available (RoHS Compliant)

Applications

• Any Space Constrained System Requiring RS-232 Ports

Related Literature

• Technical Brief TB363 “Guidelines for Handling and

• Technical Brief TB379 “Thermal Characterization of

• Technical Brief TB389 “PCB Land Pattern Design and

ISL3232E, ISL4221E, ISL4223E

which is 40% Smaller than a 20 Ld TSSOP

0.1µF Capacitors

ISL3232E)

- Battery Powered, and Portable Equipment

- Hand-Held Products (GPS Receivers, Bar Code

- PDAs and Palmtops, Data Cables

- Cellular/Mobile Phones, Digital Cameras

Processing Moisture Sensitive Surface Mount Devices

Packages for ICs”

Surface Mount Guidelines for QFN Packages”

YES

Scanners, etc.)

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

May 13, 2010

Intersil (and design) is a registered trademark of Intersil Americas Inc.

POWER-DOWN?

MANUAL

YES

AUTOMATIC POWER-DOWN

= 2.7V

FUNCTION?

15kV (IEC61000)

YES

FN6045.6

Related parts for ISL4221EIRZ

ISL4221EIRZ Summary of contents

Page 1

... CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. | 1-888-INTERSIL or 1-888-468-3774 Intersil (and design registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2004, 2007, 2008, 2010. All Rights Reserved All other trademarks mentioned are the property of their respective owners. FN6045.6 ± ...

Page 2

... PART NUMBER MARKING ISL3232EIRZ* (Note) ISL3232 EIRZ ISL4221EIR* ISL 4221EIR ISL4221EIRZ* (Note) ISL4221 EIRZ ISL4223EIR* ISL 4223EIR ISL4223EIRZ* (Note) ISL4223 EIRZ *Add “-T” suffix for tape and reel. Please refer to TB347 for details on reel specifications. NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations) ...

Page 3

Pin Descriptions PIN VCC System power supply input (2.7V to 5.5V). V+ Internally generated positive transmitter supply (+5.5V). V- Internally generated negative transmitter supply (-5.5V). GND Ground connection. This is also the potential of the thermal pad (PD) C1+ External ...

Page 4

Typical Operating Circuits TTL/CMOS LOGIC LEVELS TTL/CMOS LOGIC LEVELS 4 ISL3232E, ISL4221E, ISL4223E ISL4221E +3.3V + 0.1µ C1 0.1µ 0.1µ C2- ...

Page 5

... Thermal Resistance (Typical QFN Package (Notes 1, 2 QFN Package (Notes 1, 2 Maximum Junction Temperature (Plastic Package +150°C Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp Operating Conditions +0.3V CC Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85° 5.5V, C ...

Page 6

Electrical Specifications Test Conditions: V Typicals are at T PARAMETER RECEIVER INPUTS Input Voltage Range Input Threshold Low Input Threshold High Input Hysteresis Input Resistance TRANSMITTER OUTPUTS Output Voltage Swing Output Resistance Output Short-Circuit Current Output Leakage Current TIMING CHARACTERISTICS ...

Page 7

... The charge pump, the transmitters and the receivers. Charge-Pump Intersil’s new RS-232 devices utilize regulated on-chip dual charge pumps as voltage doublers, and voltage inverters to generate ±5.5V transmitter supplies from a V low as 3.0V. This allows them to maintain RS-232 compliant output levels over the ± ...

Page 8

TABLE 2. POWER-DOWN AND ENABLE LOGIC TRUTH TABLE (EXCLUDING ISL3232E) RS-232 SIGNAL PRESENT AT FORCEOFF RECEIVER INPUT? INPUT YES H YES YES L YES Low Power ...

Page 9

VALID RS-232 LEVEL - ISL4221E, ISL4223E IS ACTIVE 2.7V INDETERMINATE - POWER-DOWN MAY OR MAY NOT OCCUR 0.3V INVALID LEVEL - POWER-DOWN OCCURS AFTER 30µs -0.3V INDETERMINATE - POWER-DOWN MAY OR MAY NOT OCCUR -2.7V VALID RS-232 LEVEL - ISL4221E, ...

Page 10

Power Supply Decoupling In most circumstances a 0.1µF bypass capacitor is adequate. In applications that are particularly sensitive to power supply noise, decouple V to ground with a CC capacitor of the same value as the charge-pump capacitor C Connect ...

Page 11

Interconnection with 3V and 5V Logic The ISL4221E, ISL4223E and ISL3232E directly interface with 5V CMOS and TTL logic families. Nevertheless, with the ISL4221E, ISL4223E and ISL3232E at 3.3V, and the logic supply at 5V, AC, HC, and CD4000 outputs ...

Page 12

Typical Performance Curves TRANSMITTER AT 250kbps OTHER TRANSMITTERS AT 30kbps 1000 2000 3000 LOAD CAPACITANCE (pF) FIGURE 12. TRANSMITTER OUTPUT VOLTAGE vs LOAD CAPACITANCE 45 ISL4221E ...

Page 13

Package Outline Drawing L16.5x5B 16 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE Rev 2, 02/08 5.00 6 PIN 1 INDEX AREA (4X) 0.15 TOP VIEW ( TYP ) ( TYPICAL RECOMMENDED LAND PATTERN 13 ...

Page 14

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. 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 ...

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