intersil ISL81334, ISL41334 DATA SHEET

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ISL81334, ISL41334

Data Sheet December 20, 2005

±15kV ESD Protected, Two Port, Dual

Protocol Transceivers

The ISLX1334 are two port interface ICs where each port can be independently configured as a single RS-485/422 transceiver, or as a dual (2 Tx, 2 Rx) RS-232 transceiver. With both ports set to the same mode, two RS-485/422 transceivers, or four RS-232 transceivers are available.

If either port is in RS-232 mode, the onboard charge pump generates RS-232 compliant ±5V Tx output levels from a single V capacitors are required for the charge pump. The transceivers are RS-232 compliant, with the Rx inputs handling up to ±25V, and the Tx outputs handling ±12V.

In RS-485 mode, the transceivers support both the RS-485 and RS-422 differential communication standards. The receivers feature "full failsafe" operation, so the Rx outputs remain in a high state if the inputs are open or shorted together. The transmitters support up to three data rates, two of which are slew rate limited for problem free communications. The charge pump disables when both ports are in RS-485 mode, thereby saving power, minimizing noise, and eliminating the charge pump capacitors.

Both RS-232 and RS-485 modes feature loopback and shutdown functions. Loopback internally connects the Tx outputs to the corresponding Rx input, to facilitate board level self test implementation. The outputs remain connected to the loads during loopback, so connection problems (e.g., shorted connectors or cables) can be detected. Shutdown mode disables the Tx and Rx outputs, disables the charge pumps, and places the IC in a low current (µA) mode.

The ISL41334 is a QFN packaged device that includes two additional user selectable, lower speed and edge rate options for EMI sensitive designs, or to allow longer bus lengths. It also features a logic supply pin (V V

OH

inputs, to be compatible with another supply voltage in mixed voltage systems. The QFN also adds active low Rx enable pins to increase design flexibility, allowing Tx/Rx direction control, via a single signal per port, by connecting the corresponding DE and RE

supply as low as 4.5V. Four small 0.1µF

CC

) that sets the

L

level of logic outputs, and the switching points of logic

pins together.

FN6202.1

Features

• ±15kV (HBM) ESD Protected Bus Pins (RS-232 or RS-485)

• Two Independent Ports, Each User Selectable for RS-232 (2 Transceivers) or RS-485/422 (1 Transceiver)

• Flow-Through Pinouts Simplify Board Layouts

• Pb-Free Plus Anneal Available (RoHS Compliant)

• Large (2.7V) Differential V

for Improved Noise

OUT

Immunity in RS-485/422 Networks

• Full Failsafe (Open/Short) Rx in RS-485/422 Mode

• Loopback Mode Facilitates Board Self Test Functions

• User Selectable RS-485 Data Rates (ISL41334 Only)

- Fast Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Mbps

- Slew Rate Limited. . . . . . . . . . . . . . . . . . . . . . . 460kbps

- Slew Rate Limited. . . . . . . . . . . . . . . . . . . . . . . 115kbps

• Fast RS-232 Data Rate . . . . . . . . . . . . . . . Up to 650kbps

• Low Current Shutdown Mode. . . . . . . . . . . . . . . . . . .42µA

• QFN Package Saves Board Space (ISL41334 Only)

• Logic Supply Pin (V

) Eases Operation in Mixed Supply

L

Systems (ISL41334 Only)

Applications

• Gaming Applications (e.g., Slot Machines)

• Single Board Computers

• Factory Automation

• Security Networks

• Industrial/Process Control Networks

• Level Translators (e.g., RS-232 to RS-422)

• Point of Sale Equipment

• Dual Channel RS-485 Interfaces

For a single port version of these devices, please see the ISL81387/ ISL41387 data sheet.

TABLE 1. SUMMARY OF FEATURES

PAR T N U MBER

ISL81334 2 28 Ld SOIC, 28 Ld SSOP 20M 650 NO NONE YES

ISL41334 2 40 Ld QFN (6 x 6mm) 20M, 460k, 115k 650 YES L YES

NO. OF PORTS

PACKAGE OPTIONS

1

RS-485 DATA

RATE (bps)

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

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

RS-232 DATA

RATE (kbps)

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

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

PIN?

V

L

ACTIVE H or L

Rx ENABLE?

LOW POWER SHUTDOWN?

ISL81334, ISL41334

Ordering Information

PART NUMBER (NOTE) PART MARKING TEMP. RANGE (°C) PACKAGE (Pb-Free) PKG. DWG. #

ISL81334IAZ 81334IAZ -40 to 85 28 Ld SSOP M28.209

ISL81334IAZ-T 81334IAZ -40 to 85 28 Ld SSOP Tape and Reel M28.209

ISL81334IBZ ISL81334IBZ -40 to 85 28 Ld SOIC M28.3

ISL81334IBZ-T ISL81334IBZ -40 to 85 28 Ld SOIC Tape and Reel M28.3

ISL41334IRZ 41334IRZ -40 to 85 40 Ld QFN L40.6x6

ISL41334IRZ-T 41334IRZ -40 to 85 40 Ld QFN Tape and Reel L40.6x6

NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

Pinouts

ISL81334 (SOIC, SSOP)

TOP VIEW

ISL41334 (QFN)

TOP VIEW

C1+

C1-

V+

A1

B1

Y1

Z1

SEL1

SEL2

Z2

Y2

B2

A2

GND

C2+

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

C2-

V

CC

R

B1

R

A1

DZ1/DE1

D

Y1

LB

ON/OFF

D

Y2

DZ2/DE2

R

A2

R

B2

V-

V+

A1

B1

Y1

Z1

SEL1

SEL2

Z2

Y2

B2

NC

NCNCC1-

40

39 38 37 36 35 34 33 32 31

1

2

3

4

5

6

7

8

9

10

11 12 13 14 15 16 17 18 19 20

A2

NC

C1+

C2+

C2-

VCCNC

SPA

SPB

GND

RXEN1

RXEN2

L

V

30

R

B1

29

R

A1

28

DZ1/DE

1

D

27

Y1

LB

26

ON/OFF

25

D

24

Y2

DZ2/DE

23

22

21

V-

NC

2

R

A2

R

B2

2

FN6202.1

December 20, 2005

ISL81334, ISL41334

TABLE 2. ISL81334 FUNCTION TABLE

INPUTS RECEIVER OUTPUTS DRIVER OUTPUTS

DE 1 or 2 R

0 1 N.A. ON ON ON ON ON RS-232

X 0 X High-Z High-Z High-Z High-Z OFF Shutdown

1 1 0 ON High-Z * High-Z High-Z OFF RS-485

1 1 1 ON High-Z * ON ON OFF RS-485

NOTE:

1. Charge pumps are off iff SEL1 = SEL2 = 1, or if ON/OFF pumps are on.

A

R

B

= 0. If ON = 1, and either port is programmed for RS-232 mode, then the charge

YZ

CHARGE PUMPS

(NOTE 1) MODESEL1 or 2 ON/OFF

ISL81334 Truth Tables (FOR EACH PORT)

RS-232 TRANSMITTING MODE

INPUTS OUTPUTS

SEL1 or 2 ON/OFF

010011

010110

011001

011100

0 0 X X High-Z High-Z

SEL1 or 2 ON/OFF

010011

010110

011001

011100

0 1 Open Open 1 1

0 0 X X High-Z High-Z

D

Y

RS-232 RECEIVING MODE

INPUTS OUTPUT

ABRAR

D

Z

YZ

RS-485 TRANSMITTING MODE

INPUTS OUTPUTS

SEL1 or 2 ON/OFF

111010

111101

1 1 0 X High-Z High-Z

1 0 X X High-Z High-Z

B

SEL1 or 2 ON/OFF

11 ≥ -40mV 1 High-Z

11 ≤ -200mV 0 High-Z

1 1 Open or Shorted together 1 High-Z

1 0 X High-Z High-Z

* Internally pulled high through a 40kΩ resistor.

DE1 or 2 D

RS-485 RECEIVING MODE

INPUTS OUTPUT

Y

B-A R

YZ

A

RB *

3

FN6202.1

December 20, 2005

ISL81334, ISL41334

TABLE 3. ISL41334 FUNCTION TABLE

INPUTS

SPA SPB

1

RXEN

or 2 DE 1 or 2 R

OUTPUTS

A

R

B

0 1 X X 0 N.A.ONONONON ON 0.46 RS-232

0 1 X X 1 N.A. High-Z High-Z ON ON ON 0.46 RS-232

X 0 X X X X High-Z High-Z High-Z High-Z OFF N.A. Shutdown

1 1 X X 0 0 ON High-Z * High-Z High-Z OFF N.A. RS-485

1 1 0 0 0 1 ON High-Z * ON ON OFF 0.46 RS-485

1 1 0 1 0 1 ON High-Z * ON ON OFF 0.115 RS-485

1 1 1 0 0 1 ON High-Z * ON ON OFF 20 RS-485

1 1 1 1 0 1 ON High-Z * ON ON OFF 20 RS-485

1 1 X X 1 0 High-Z High-Z * High-Z High-Z OFF N.A. RS-485

1 1 0 0 1 1 High-Z High-Z * ON ON OFF 0.46 RS-485

1 1 0 1 1 1 High-Z High-Z * ON ON OFF 0.115 RS-485

1 1 1 0 1 1 High-Z High-Z * ON ON OFF 20 RS-485

1 1 1 1 1 1 High-Z High-Z * ON ON OFF 20 RS-485

NOTE:

RECEIVER

2. Charge pumps are off iff SEL1 = SEL2 = 1, or if ON/OFF

= 0. If ON = 1, and either port is programmed for RS-232 mode, then the charge pumps

are on.

DRIVER

OUTPUTS

YZ

CHARGE

(NOTE 2)

PUMPS

DRIVER

DATA RATE

(Mbps) MODESEL1 or 2 ON/OFF

ISL41334 Truth Tables (FOR EACH PORT)

RS-232 TRANSMITTING MODE

INPUTS OUTPUTS

SEL1 or 2 ON/OFF

0 1 0011

0 1 0110

0 1 1001

0 1 1100

0 0 X X High-Z High-Z

SEL1 or 2 ON/OFF

0 1 00011

0 1 00110

0 1 01001

0 1 01100

0 1 0 Open Open 1 1

0 1 1 X X High-Z High-Z

0 0 X X X High-Z High-Z

D

Y

D

Z

YZ

RS-232 RECEIVING MODE

INPUTS OUTPUT

RXEN 1

or 2 A B R

A

RS-485 TRANSMITTING MODE

DATA

SEL1

or 2

INPUTS OUTPUTS

ON/

DEN

OFF

1 or 2 SPA SPB D

YZMbps

Y

RATE

1 1 1 0 0 0/1 1/0 0/1 0.46

1 1 1 0 1 0/1 1/0 0/1 0.115

1 1 1 1 X 0/1 1/0 0/1 20

1 1 0 X X X High-Z High-Z N.A.

1 0 X X X X High-Z High-Z N.A.

RS-485 RECEIVING MODE

INPUTS OUTPUT

R

B

SEL1

or 2 ON/OFF

RXEN 1

or 2 B-A R

RB *

A

110≥ -40mV 1 High-Z

110≤ -200mV 0 High-Z

1 1 0 Open or Shorted

1 High-Z

together

1 1 1 X High-Z High-Z

1 0 X X High-Z High-Z

* Internally pulled high through a 40kΩ resistor.

4

FN6202.1

December 20, 2005

ISL81334, ISL41334

Pin Descriptions

PIN MODE FUNCTION

GND BOTH Ground connection.

LB

BOTH Enables loopback mode when low. Internally pulled-high.

NC BOTH No Connection.

ON/OFF

RXEN

SEL BOTH Interface Mode Select input. High puts corresponding port in RS-485 Mode, while a low puts it in RS-232 Mode.

V

D

DE RS-485 Driver output enable. The driver outputs, Y and Z, are enabled by bringing DE high. They are high impedance when DE is

R

SP RS-485 Speed control. Internally pulled-high. (QFN only)

C1+ RS-232 External capacitor (voltage doubler) is connected to this lead. Not needed if both ports in RS-485 Mode.

C1- RS-232 External capacitor (voltage doubler) is connected to this lead. Not needed if both ports in RS-485 Mode.

C2+ RS-232 External capacitor (voltage inverter) is connected to this lead. Not needed if both ports in RS-485 Mode.

C2- RS-232 External capacitor (voltage inverter) is connected to this lead. Not needed if both ports in RS-485 Mode.

V+ RS-232 Internally generated positive RS-232 transmitter supply (+5.5V). C3 not needed if both ports in RS-485 Mode.

BOTH If either port is in RS-232 mode, a low on ON/OFF disables the charge pumps. In either mode, a low disables all the outputs,

and places the device in low power shutdown. Internally pulled-high. ON = 1 for normal operation.

BOTH Active low receiver output enable. Rx is enabled when RXEN is low; Rx is high impedance when RXEN is high. Internally

pulled low. (QFN only)

BOTH System power supply input (5V).

CC

V

BOTH Logic-Level Supply. All TTL/CMOS inputs and outputs are powered by this supply. (QFN only)

L

A RS-232 Receiver input with ±15kV ESD protection. A low on A forces R

high; A high on A forces RA low.

A

RS-485 Inverting receiver input with ±15kV ESD protection.

B RS-232 Receiver input with ±15kV ESD protection. A low on B forces R

high; A high on B forces RB low.

B

RS-485 Noninverting receiver input with ±15kV ESD protection.

RS-232 Driver input. A low on DY forces output Y high. Similarly, a high on DY forces output Y low.

Y

RS-485 Driver input. A low on D

RS-232 Driver input. A low on DZ forces output Z high. Similarly, a high on DZ forces output Z low.

Z

forces output Y high and output Z low. Similarly, a high on DY forces output Y low and output Z high.

Y

low. Internally pulled high when port selected for RS-485 mode.

RS-232 Receiver output.

A

RS-485 Receiver output: If B > A by at least -40mV, R

unconnected (floating) or shorted together (i.e., full fail-safe).

RS-232 Receiver output.

B

RS-485 Not used. Internally pulled-high, and unaffected by RXEN

is high; If B < A by -200mV or more, RA is low; RA = High if A and B are

A

.

Y RS-232 Driver output with ±15kV ESD protection.

RS-485 Inverting driver output with ±15kV ESD protection.

Z RS-232 Driver output with ±15kV ESD protection.

RS-485 Noninverting driver output with ±15kV ESD protection.

V- RS-232 Internally generated negative RS-232 transmitter supply (-5.5V). C4 not needed if both ports in RS-485 Mode.

5

FN6202.1

December 20, 2005

Typical Operating Circuit

RS-232 MODE WITHOUT LOOPBACK

ISL81334, ISL41334

RS-232 MODE WITH LOOPBACK

+5V

C

0.1µF

C

0.1µF

A1

B1

Y1

Z1

+

0.1µF

1

2

C1+

+

2

C1-

28

C2+

+

27

C2-

4

5kΩ

525

5kΩ

6

7

820

SEL1

26

V

CC

R

D

ON/OFF

V+

V-

LB

3

C

3

+

0.1µF

15

C

4

0.1µF

+

24

R

A1

R

B1

22

D

Y1

23

D

Z1

21

V

CC

V

CC

GND

14

NOTE: PINOUT FOR SOIC AND SSOP

SAME FOR PORT 2.

+5V

C

0.1µF

C

0.1µF

Y1

Z1

+

A1

0.1µF

1

2

C1+

+

2

C1-

28

C2+

+

27

C2-

4

26

V

CC

R

5kΩ

5

B1

5kΩ

R

LB Rx

6

7

8

SEL1

GND

14

NOTE: PINOUT FOR SOIC AND SSOP

SAME FOR PORT 2.

D

ON/OFF

V+

V-

LB

3

C

3

+

0.1µF

15

C

4

0.1µF

+

24

R

A1

25

R

B1

22

D

Y1

23

D

Z1

21

GND

20

V

CC

RS-485 MODE WITHOUT LOOPBACK

+5V

+

C

0.1µF

C

0.1µF

A1

B1

Y1

Z1

V

CC

V

CC

0.1µF

1

2

C1+

+

2

C1-

28

C2+

+

27

C2-

4

5

6

7

23

DE1

820

SEL1

V

CC

GND

26

R

D

ON/OFF

14

LB

V+

V-

RS-485 MODE WITH LOOPBACK

+5V

+

0.1µF

1

3

C

3

+

0.1µF

15

C

4

0.1µF

+

24

R

A1

25

R

B1

22

D

Y1

C

0.1µF

C

0.1µF

1

2

A1

B1

Y1

Z1

21

V

CC

V

CC

V

CC

V

CC

C1+

+

2

C1-

28

C2+

+

27

C2-

4

5

6

7

DE1

23

820

SEL1

V

CC

GND

26

R

LB Rx

D

14

V+

V-

LB

ON/OFF

3

C

3

+

0.1µF

15

C

4

0.1µF

+

24

R

A1

25

R

B1

22

D

Y1

21

GND

V

CC

NOTE: PINOUT FOR SOIC AND SSOP

SAME FOR PORT 2.

6

NOTE: PINOUT FOR SOIC AND SSOP

SAME FOR PORT 2.

FN6202.1

December 20, 2005

ISL81334, ISL41334

Absolute Maximum Ratings (T

VCC to Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V

V

(QFN Only) . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to VCC + 0.5V

L

Input Voltages

All Except A, B (non-QFN Package) . . . . . -0.5V to (V

All Except A, B (QFN Package) . . . . . . . . . . -0.5V to (V

Input/Output Voltages

A, B (Any Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . -25V to +25V

Y, Z (Any Mode, Note 3) . . . . . . . . . . . . . . . . . . . -12.5V to +12.5V

R

, RB (non-QFN Package). . . . . . . . . . . . -0.5V to (VCC + 0.5V)

A

R

, RB (QFN Package) . . . . . . . . . . . . . . . . -0.5V to (VL + 0.5V)

A

Output Short Circuit Duration

Y, Z , R

, RB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Indefinite

A

= 25°C) Thermal Information

A

Thermal Resistance (Typical, Note 4)

28 Ld SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . 65

28 Ld SSOP Package . . . . . . . . . . . . . . . . . . . . . . . 60

CC

L

+ 0.5V) + 0.5V)

40 Ld QFN Package. . . . . . . . . . . . . . . . . . . . . . . . . 32

Maximum Junction Temperature (Plastic Package) . . . . . . . 150°C

Maximum Storage Temperature Range . . . . . . . . . . . -65°C to 150°C

Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300°C

(SOIC and SSOP - Lead Tips Only)

Operating Conditions

Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to 85°C

θ

JA

(°C/W)

ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . See Specification Table

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

NOTES:

3. One output at a time, I

4. QFN θ

θ

is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features.

JA

for other packages is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tec h B ri e f

JA

≤ 100mA for ≤ 10 mins.

OUT

TB379 and Tech Brief TB389 for details.

Electrical Specifications Test Conditions: V

Typicals are at V

= 4.5V to 5.5V, C1 - C4 = 0.1µF, VL = VCC (for QFN only); Unless Otherwise Specified.

CC

= 5V, TA = 25°C (Note 5)

CC

TEMP

PARAMETER SYMBOL TEST CONDITIONS

DC CHARACTERISTICS - RS-485 DRIVER (SEL = V

Driver Differential V

(no load) V

OUT

(with load) V

OUT

OD1

OD2

R = 50Ω (RS-422) (Figure 1) Full 2.5 3.1 - V

CC

)

(°C) MIN TYP MAX UNITS

Full - - V

CC

V

R = 27Ω (RS-485) (Figure 1) Full 2.2 2.7 5 V

Change in Magnitude of Driver Differential V Complementary Output States

Driver Common-Mode V

OUT

for

OUT

Change in Magnitude of Driver Common-Mode V

OUT

for

V

∆V

V

∆V

OD3

RD = 60Ω, R = 375Ω, VCM = -7V to 12V (Figure 1) Full 2 2.7 5 V

R = 27Ω or 50Ω (Figure 1) Full - 0.01 0.2 V

OD

R = 27Ω or 50Ω (Figure 1) (Note 9) Full - - 3.1 V

OC

R = 27Ω or 50Ω (Figure 1) (Note 9) Full - 0.01 0.2 V

OC

Complementary Output States

Driver Short-Circuit Current, V

= High or Low

OUT

Driver Three-State Output Leakage Current (Y, Z)

I

OS

-7V ≤ (VY or VZ) ≤ 12V (Note 7) Full 35 - 250 mA

OZ

Outputs Disabled, V

= 0V or 5.5V

CC

= 12V Full - - 500 µA

V

OUT

= -7V Full -200 - - µA

V

OUT

DC CHARACTERISTICS - RS-232 DRIVER (SEL = GND)

Driver Output Voltage Swing V Driver Output Short-Circuit Current I

OS

All T

O

V

Loaded with 3kΩ to Ground Full ±5.0 +6/-7 - V

OUTS

= 0V Full -60 25/-35 60 mA

OUT

DC CHARACTERISTICS - LOGIC PINS (i.e., DRIVER AND CONTROL INPUT PINS)

Input High Voltage V

V

VL = VCC if QFN Full 2 1.6 - V

IH1

VL = 3.3V (QFN Only) Full 2 1.2 - V

IH2

VL = 2.5V (QFN Only) Full 1.5 1 - V

IH3

7

FN6202.1

December 20, 2005

ISL81334, ISL41334

Electrical Specifications Test Conditions: V

Typicals are at V

= 4.5V to 5.5V, C1 - C4 = 0.1µF, VL = VCC (for QFN only); Unless Otherwise Specified.

CC

= 5V, TA = 25°C (Note 5) (Continued)

CC

TEMP

PARAMETER SYMBOL TEST CONDITIONS

Input Low Voltage V

Input Current I

V

IN1

I

IN2

VL = VCC if QFN Full - 1.4 0.8 V

IL1

VL = 3.3V (QFN Only) Full - 1 0.7 V

IL2

VL = 2.5V (QFN Only) Full - - 0.5 V

IL3

Pins Without Pull-ups or Pull-downs Full -2 - 2 µA

LB, ON/OFF, DE, SP (QFN), RXEN (QFN) Full -25 - 25 µA

DC CHARACTERISTICS - RS-485 RECEIVER INPUTS (SEL = V

Receiver Differential Threshold Voltage

Receiver Input Hysteresis ∆V

Receiver Input Current (A, B) I

V

-7V ≤ VCM ≤ 12V, Full Failsafe Full -0.2 - -0.04 V

TH

VCM = 0V 25 - 35 - mV

TH

VCC = 0V or 4.5 to 5.5V VIN = 12V Full - - 0.8 mA

IN

CC

)

(°C) MIN TYP MAX UNITS

VIN = -7V Full -0.64 - - mA

Receiver Input Resistance R

-7V ≤ VCM ≤ 12V, VCC = 0 (Note 8) or

IN

4.5V ≤ V

CC

≤ 5.5V

Full 15 - - kΩ

DC CHARACTERISTICS - RS-232 RECEIVER INPUTS (SEL = GND)

Receiver Input Voltage Range V Receiver Input Threshold V

Receiver Input Hysteresis ∆V Receiver Input Resistance R

IN

IL

V

IH

TH

VIN = ±15V, VCC Powered Up (Note 8) Full 3 5 7 kΩ

IN

Full -25 - 25 V

Full - 1.4 0.8 V

Full 2.4 1.9 - V

25 - 0.5 - V

DC CHARACTERISTICS - RECEIVER OUTPUTS (485 OR 232 MODE)

Receiver Output High Voltage V

Receiver Output Low Voltage V

Receiver Short-Circuit Current I

Receiver Three-State Output Current

Unused Receiver (R

) Pull-Up

B

OH1IO

V

OH2IO

V

OH3IO

OL

OSR

I

OZR

R

OBZ

= -2mA (VL = VCC if QFN) Full 3.5 4.6 - V

= -650µA, VL = 3V, QFN Only Full 2.6 2.9 - V

= -500µA, VL = 2.5V, QFN Only Full 2 2.4 - V

IO = 3mA Full - 0.1 0.4 V

0V ≤ VO ≤ V

CC

Full 7 - 85 mA

Output Disabled, 0V ≤ VO ≤ VCC (or VL for QFN) Full - - ±10 µA

ON/OFF = VCC, SELX = VCC (RS-485 Mode) 25 - 40 - kΩ

Resistance

POWER SUPPLY CHARACTERISTICS

No-Load Supply Current, Note 6 I

Shutdown Supply Current I

CC232

I

CC485

SHDN232

I

SHDN485

SEL1 or SEL2 = GND, LB = ON/OFF = V

SEL 1 & 2 = LB = DE = ON/OFF = V

CC

ON/OFF = SELX = GND, LB = VCC, (SPX = V if QFN)

ON/OFF = DEX = GND, SELX = LB

= VCC, (SPX = GND if QFN)

SOIC/SSOP Full - 42 80 µA

QFN Full - 80 160 µA

Full - 3.7 7 mA

Full - 1.6 5 mA

Full - 25 50 µA

CC

ESD CHARACTERISTICS

Bus Pins (A, B, Y, Z) Any Mode Human Body Model 25 - 15 - kV

All Other Pins Human Body Model 25 - 4 - kV

8

FN6202.1

December 20, 2005

ISL81334, ISL41334

Electrical Specifications Test Conditions: V

Typicals are at V

= 4.5V to 5.5V, C1 - C4 = 0.1µF, VL = VCC (for QFN only); Unless Otherwise Specified.

CC

= 5V, TA = 25°C (Note 5) (Continued)

CC

TEMP

PARAMETER SYMBOL TEST CONDITIONS

(°C) MIN TYP MAX UNITS

RS-232 DRIVER AND RECEIVER SWITCHING CHARACTERISTICS (SEL = GND, ALL VERSIONS AND SPEEDS)

Driver Output Transition Region

SR R

Slew Rate

Driver Output Transition Time t

Driver Propagation Delay t

Driver Propagation Delay Skew t

Driver Enable Time from Shutdown t

DPHL

t

DPLH

DSKEWtDPHL

DENSDVOUT

Driver Maximum Data Rate DR

=3kΩ, Measured From

L

3V to -3V or -3V to 3V

, t

r

RL=3kΩ, CL = 2500pF, 10% - 90% Full 0.22 1.2 3.1 µs

f

RL=3kΩ, C

= 1000pF (Figure 6) Full - 1 2 µs

L

- t

(Figure 6) Full - 240 400 ns

DPLH

= ±3.0V 25 - 20 - µs

RL=3kΩ, CL= 1000pF, One Transmitter

D

CL ≥ 15pF Full - 18 30 V/µs

C

≤ 2500pF Full 4 12 - V/µs

L

Full - 1.2 2 µs

Full 460 650 - kbps

Switching per port

Receiver Propagation Delay t

Receiver Propagation Delay Skew t

RPHL

t

RPLH

RSKEWtRPHL

Receiver Maximum Data Rate DR

RS-485 DRIVER SWITCHING CHARACTERISTICS (FAST DATA RATE (20Mbps), SEL = V

Driver Differential Input to Output

t

DLH

C

= 15pF (Figure 7) Full - 50 120 ns

L

Full - 40 120 ns

- t

(Figure 7) Full - 10 40 ns

RPLH

CL= 15pF Full 0.46 2 - Mbps

R

, ALL VERSIONS (SPA = VCC if QFN))

CC

, t

DHLRDIFF

= 54Ω, CL = 100pF (Figure 2) Full 15 30 50 ns

Delay

Driver Output Skew t

Driver Differential Rise or Fall Time t

SKEW

R

Driver Enable to Output Low t

Driver Enable to Output High t

Driver Disable from Output Low t

Driver Disable from Output High t

Driver Enable from Shutdown to Output Low

Driver Enable from Shutdown to Output High

Driver Maximum Data Rate f

t

ZL(SHDN)RL

t

ZH(SHDN)RL

MAX

RS-485 DRIVER SWITCHING CHARACTERISTICS (MEDIUM DATA RATE (460kbps, QFN ONLY), SEL = V

Driver Differential Input to Output Delay

Driver Output Skew t

Driver Differential Rise or Fall Time t

t

DLH

SKEW

R

Driver Enable to Output Low t

Driver Enable to Output High t

Driver Disable from Output Low t

Driver Disable from Output High t

Driver Enable from Shutdown to Output Low

Driver Enable from Shutdown to

t

ZL(SHDN)RL

t

ZH(SHDN)RL

R

= 54Ω, CL = 100pF (Figure 2) Full - 0.5 10 ns

DIFF

, t

R

F

ZL

ZH

LZ

HZ

= 54Ω, CL = 100pF, Figure 2 Full 3 11 20 ns

DIFF

CL = 100pF, SW = VCC (Figure 3) Full - 27 60 ns

CL = 100pF, SW = GND (Figure 3) Full - 24 60 ns

CL = 15pF, SW = VCC (Figure 3) Full - 31 60 ns

CL = 15pF, SW = GND (Figure 3) Full - 24 60 ns

= 500Ω, CL = 100pF, SW = VCC (Figure 3) Full - 65 250 ns

= 500Ω, CL = 100pF, SW = GND (Figure 3) Full - 152 250 ns

R

= 54Ω, CL = 100pF (Figure 2) Full - 30 - Mbps

DIFF

, SPA = SPB= GND)

CC

, t

DHLRDIFF

, t

F

ZL

ZH

LZ

HZ

= 54Ω, CL = 100pF (Figure 2) Full 200 490 1000 ns

R

= 54Ω, CL = 100pF (Figure 2) Full - 110 400 ns

DIFF

R

= 54Ω, CL = 100pF (Figure 2) Full 300 600 1100 ns

DIFF

CL = 100pF, SW = VCC (Figure 3) Full - 30 300 ns

CL = 100pF, SW = GND (Figure 3) Full - 128 300 ns

CL = 15pF, SW = VCC (Figure 3) Full - 31 60 ns

CL = 15pF, SW = GND (Figure 3) Full - 24 60 ns

= 500Ω, CL = 100pF, SW = VCC (Figure 3) Full - 65 500 ns

= 500Ω, CL = 100pF, SW = GND (Figure 3) Full - 255 500 ns

Output High

9

FN6202.1

December 20, 2005