ISL3243EIRZ Intersil, ISL3243EIRZ Datasheet

ISL3243EIRZ

Manufacturer Part Number

ISL3243EIRZ

Description

IC TXRX RS232 ESD-PROT 32-QFN

Manufacturer

Intersil

Type

Transceiverr

Datasheet

1.ISL3241EIRZ-T.pdf (16 pages)

Specifications of ISL3243EIRZ

Number Of Drivers/receivers

3/5

Protocol

RS232

Voltage - Supply

2.7 V ~ 3.6 V

Mounting Type

Surface Mount

Package / Case

32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN

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:

ISL3243EIRZ

Manufacturer:

Intersil

Quantity:

480

Current page: 1 of 16
Download datasheet (550Kb)

QFN Packaged, ±15kV ESD Protected,

+2.7V to +3.6V, 250kbps, RS-232

Transmitters/Receivers with Separate

Logic Supply Pin

The Intersil ISL324xE devices are 2.7V to 3.6V powered

RS-232 transmitters/receivers which meet ElA/TIA-232 and

V.28/V.24 specifications, even at V

they provide ±15kV ESD protection (IEC61000-4-2 Air Gap

and Human Body Model) on transmitter outputs and receiver

inputs (RS-232 pins). Targeted applications are POS

systems, and notebook and laptop computers 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 0.5µA 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.

ISL324xE are 3 driver, 5 receiver devices that, coupled with

the 5x5 QFN package, provide the industry’s smallest,

lowest power complete serial port. The 5x5 QFN requires

60% less board area than a 28 Ld TSSOP, and is nearly

20% thinner. These devices also include a noninverting

always-active receiver for “wake-up” capability.

The ISL3243E features an automatic powerdown 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.

The ISL324xE feature a V

“Pin Descriptions” on page 2) output levels and input

thresholds to values compatible with the V

external logic (e.g., a UART).

Table 1 summarizes the features of the ISL324xE.

PART NUMBER

ISL3241E

ISL3243E

NO. OF

Tx.

NO. OF

pin that adjusts the logic pin (see

Rx.

SUPPLY (V

Data Sheet

LOGIC

= 3.0V. Additionally,

PIN?

YES

powering the

)

TABLE 1. SUMMARY OF FEATURES

MONITOR Rx.

NO. OF

OUTB

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

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

)

(kbps)

DATA

RATE

250

Features

• V

• Parameters Specified for 10% Tolerance Supplies and Full

• Pb-free Small QFN (5mmx5mm) Package is 60% Smaller

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

• 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

• Receiver Hysteresis for Improved Noise Immunity

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

• Low Supply Current in Power-down State . . . . . . . . 0.5µA

• Pb-Free (RoHS compliant)

Applications

• Any Space Constrained System Requiring RS-232 Ports

• Mixed Voltage Serial Ports

Related Literature

• Technical Brief TB363 “Guidelines for Handling and

• ”Technical Brief TB379 “Thermal Characterization of

• Technical Brief TB389 “PCB Land Pattern Design and

Adjusts Logic Output Levels and Input Thresholds for

Compatibility with Lower Supply Voltage Logic

Industrial Temp Range

than a 28 Lead TSSOP

0.1µF Capacitors

- Battery Powered, Hand-Held, and Portable Equipment

- POS Systems and Scanners

- Laptop Computers, Notebooks

- GPS Receivers

Processing Moisture Sensitive Surface Mount Devices

Packages for ICs”

Surface Mount Guidelines for QFN Packages”

Pin for Compatibility in Mixed Voltage Systems

Rx. ENABLE

FUNCTION?

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

May 13, 2010

YES

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

ISL3241E, ISL3243E

Pb-FREE?

YES

= 2.7V

MANUAL

POWER-

DOWN?

YES

POWERDOWN

AUTOMATIC

FUNCTION?

FN6768.1

YES

Related parts for ISL3243EIRZ

ISL3243EIRZ Summary of contents

Page 1

... All other trademarks mentioned are the property of their respective owners. ISL3241E, ISL3243E FN6768.1 = 2.7V CC MANUAL AUTOMATIC POWER- POWERDOWN Pb-FREE? DOWN? FUNCTION? YES YES YES YES YES Intersil (and design registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2008, 2010. All Rights Reserved NO ...

Page 2

... ISL3241EIRZ-T* ISL3241 EIRZ ISL3243EIRZ ISL3243 EIRZ ISL3243EIRZ-T* ISL3243 EIRZ * 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 (Continued) PIN , T ±15kV ESD Protected RS-232 level (nominally ±5.5V) transmitter outputs. OUT , R ±15kV ESD Protected RS-232 compatible receiver inputs TTL/CMOS level receiver outputs. Swings between GND and V OUT R TTL/CMOS level, ...

Page 4

Typical Operating Circuits ISL3241E +3.3V + 0.1µ C1 0.1µ C2+ + 0.1µ OUTB 19 R2 ...

Page 5

... Thermal Information Thermal Resistance (Typical, Notes 1, 2) θ + 0.3V QFN Package Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . +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 Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to 85°C + 0.3V 3.6V 1.8V ±10 +25° ...

Page 6

Electrical Specifications Test Conditions: V Typicals are at T PARAMETER Receiver Positive or Negative Threshold to INVALID High Delay (t ) INVH Receiver Positive or Negative Threshold to INVALID Low Delay (t ) INVL RECEIVER INPUTS Input Voltage Range ≥ ...

Page 7

Electrical Specifications Test Conditions: V Typicals are at T PARAMETER ESD PERFORMANCE RS-232 Pins ( Human Body Model OUT IN IEC61000-4-2 Contact Discharge IEC61000-4-2 Air Gap Discharge All Pins Human Body Model Machine Model NOTES: 3. Parameters ...

Page 8

... The charge pump, the transmitters, and the receivers. Charge-Pump Intersil’s new ISL324xE devices utilize regulated on-chip dual charge pumps as voltage doublers, and voltage inverters to generate ±5.5V transmitter supplies from a V supply as low as 3.0V. This allows them to maintain RS-232 compliant output levels over the ± ...

Page 9

TABLE 2. POWER-DOWN AND ENABLE LOGIC TRUTH TABLE (NOTE: “H” RS-232 SIGNAL PRESENT AT SHDN OR RECEIVER FORCEOFF FORCEON INPUT? INPUT INPUT ISL3241E N/A L N/A N/A L N/A N/A H N/A N/A H N/A ISL3243E NO H ...

Page 10

V CCL TRANSITION DETECTOR TO WAKE-UP LOGIC OUTB HI-Z X OUT R2 POWERED OUT DOWN UART FORCEOFF = GND OR SHDN = GND FIGURE 6. DISABLED ...

Page 11

I/O levels. Tailoring the ISL324XE’s logic pin input switching points and output levels to the supply voltage of the UART, ASIC, or µcontroller eliminates the need for a level ...

Page 12

Invalid receiver levels occur whenever the driving peripheral’s outputs are shut off (powered down) or when the RS-232 interface cable is disconnected. The ISL3243E powers back up whenever it detects ...

Page 13

T1 IN 5V/DIV. T1 OUT 3V/DIV. R1 OUT V = +3.3V 1. 0.1µF 4µs/DIV. FIGURE 14. LOOPBACK TEST AT 120kbps 3V/DIV 5V/DIV. T1 OUT 3V/DIV. R1 OUT V = ...

Page 14

Typical Performance Curves TRANSMITTER AT 250kbps OTHER TRANSMITTERS AT 30kbps 3kΩ ON ALL TOUTS 1000 2000 3000 LOAD CAPACITANCE (pF) FIGURE 16. TRANSMITTER OUTPUT VOLTAGE vs LOAD CAPACITANCE ...

Page 15

... 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 ...

Page 16

Package Outline Drawing L32.5x5B 32 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE Rev 2, 11/07 5.00 6 PIN 1 INDEX AREA (4X) 0.15 TOP VIEW ( 4. 80 TYP ) ( TYPICAL RECOMMENDED LAND PATTERN 16 ISL3241E, ISL3243E ...

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