intersil ISL83080E, ISL83082E, ISL83083E, ISL83085E, ISL83086E DATA SHEET

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ISL83080E, ISL83082E, ISL83083E,

ISL83085E, ISL83086E, ISL83088E

Data Sheet

±15kV ESD Protected, 5V, Full Fail-Safe,
Fractional (1/8) Unit Load, RS-485/RS-422
Transceivers

The ISL8308XE are BiCMOS, ESD protected, 5V powered,
single transceivers that meet both the RS-485 and RS-422
standards for balanced communication. Each driv er output,
and receiver input, is protected against
without latch-up, and unlike competitive products, this Intersil
family is specified for 10% tole r ance suppli es (4.5V to 5. 5V).

These devices have very low bus currents (+125µA/-75µA),
so they present a true “1/8 unit load” to the RS-485 bus. This
allows up to 256 transceivers on the network without violating
the RS-485 specification’s 32 unit load maximum, and without
using repeaters. For example, in a remote utility meter reading
system, individual meter readings are routed to a concentrator
via an RS-485 network, so the high allowed node count
minimizes the number of repeaters required. Data for all
meters is then read out from the concentrator via a single
access port, or a wireless link.

Receiver (Rx) inputs f eature a “Ful l Fail-Safe” design, which
ensures a logic high Rx output if Rx inputs are floating,
shorted, or terminated but undriven.

The ISL83080E, ISL83082E, ISL83083E, ISL83085E utilize
slew rate limited drivers which reduce EMI, and minimize
reflections from improperly terminated transmission lines, or
unterminated stubs in multidrop and multipoint applications.
Slew rate limited versions also include receiver input filtering to
enhance noise immunity in the presence of slow input signals.

Hot Plug circuitry ensures that the Tx and Rx outputs remain
in a high impedance state until the power supply has
stabilized, and the Tx outputs are fully short circuit protected.

The ISL83080E, ISL83083E, ISL83086E are configured for
full duplex (separate Rx input and Tx output pins)
applications. The half duplex versions multiplex the Rx inputs
and Tx outputs to allow transceivers with output disable
functions in 8 lead packages.

±15kV ESD strikes

September 12, 2005

FN6085.6

Features

• Pb-Free Plus Anneal Available (RoHS Compliant)
(See Ordering Info)

• RS-485 I/O Pin ESD Protection . . . . . . . . . .

±15kV HBM

Class 3 ESD Protection (HBM) on all Pins. . . . . . . . >7kV

• Full Fail-safe (Open, Short, Terminated and Floating)
Receivers

• Hot Plug Circuitry (ISL83080E, ISL83082E, ISL83083E,
ISL83085E)

- Tx and Rx Outputs Remain Three-state During Power-

up/Power-down

• True 1/8 Unit Load Allows up to 256 Devices on the Bus

• Specified for Single 5V, 10% Tolerance, Supplies

• High Data Rates. . . . . . . . . . . . . . . . . . . . . up to 10Mbps

• Low Quiescent Supply Current . . . . . . . . . . . . . . . 530

µA

Ultra Low Shutdown Supply Current . . . . . . . . . . . . 70nA

• -7V to +12V Common Mode Input Voltage Range

• Half and Full Duplex Pinouts

• Three-State Rx and Tx Outputs

• Current Limiting and Thermal Shutdown for driver
Overload Protection

Applications

• Automated Utility Meter Reading Systems

• High Node Count Systems

• Factory Automation

• Field Bus Networks

• Security Camera Networks

• Building Environmental Control Systems

• Industrial/Process Control Networks

TABLE 1. SUMMARY OF FEATURES

PART

NUMBER

ISL83080E Full 0.115 Yes Yes 256 Yes 530 Yes 14
ISL83082E Half 0.115 Yes Yes 256 Yes 530 Yes 8
ISL83083E Full 0.5 Yes Yes 256 Yes 530 Yes 14
ISL83085E Half 0.5 Yes Yes 256 Yes 530 Yes 8
ISL83086E Full 10 No No 256 Yes 530 Yes 14
ISL83088E Half 10 No No 256 Yes 530 Yes 8

HALF/FULL

DUPLEX

DATA RATE

(Mbps)

1

SLEW-RATE

LIMITED? HOT PLUG

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

1-888-INTERSIL or 321-724-7143

# DEVICES

ON BUS

Rx/Tx

ENABLE?

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

Copyright © Intersil Americas Inc. 2004-2005. All Rights Reserved

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

QUIESCENT

I

(µA)

CC

LOW POWER
SHUTDOWN?

PIN

COUNT

Pinouts

ISL83080E, ISL83082E, ISL83083E, ISL83085E, ISL83086E, ISL83088E

ISL83082E, ISL83085E, ISL83088E

(MSOP, SOIC)

TOP VIEW

RO
RE
DE

1

R

2
3

D

4

DI

8

V

CC

7

B/Z

6

A/Y

5

GND

ISL83080E, ISL83083E, ISL83086E

(SOIC)

TOP VIEW

NC
RO
RE
DE

GND
GND

1
2

R

3
4

DI

D

5
6
7

14

V

CC

NC

13

A

12

B

11

Z

10

9

Y
NC

8

Ordering Information (Note 1)

TEMP.

PART NO. (BRAND)

ISL83080EIB

RANGE (°C) PACKAGE

-40 to 85 14 Ld SOIC M14.15

(83080EIB)
ISL83080EIBZ

(83080EIBZ, Note 2)
ISL83082EIB

-40 to 85 14 Ld SOIC
(Pb-Free)

-40 to 85 8 Ld SOIC M8.15

(83082EIB)
ISL83082EIBZ

(83082EIBZ, Note 2)

-40 to 85 8 Ld SOIC
(Pb-Free)

ISL83082EIU (3082E) -40 to 85 8 Ld MSOP M8.118
ISL83082EIUZ

(3082Z, Note 2)
ISL83083EIB

-40 to 85 8 Ld MSOP
(Pb-free)

-40 to 85 14 Ld SOIC M14.15

(83083EIB)
ISL83083EIBZ

(83083EIBZ, Note 2)
ISL83085EIB

-40 to 85 14 Ld SOIC
(Pb-Free)

-40 to 85 8 Ld SOIC M8.15

(83085EIB)
ISL83085EIBZ

(83085EIBZ, Note 2)

-40 to 85 8 Ld SOIC
(Pb-Free)

ISL83085EIU (3085E) -40 to 85 8 Ld MSOP M8.118
ISL83085EIUZ

(3085Z, Note 2)
ISL83086EIB

-40 to 85 8 Ld MSOP
(Pb-free)

-40 to 85 14 Ld SOIC M14.15

(83086EIB)
ISL83086EIBZ

(83086EIBZ, Note 2)
ISL83088EIB

-40 to 85 14 Ld SOIC
(Pb-Free)

-40 to 85 8 Ld SOIC M8.15

(83088EIB)
ISL83088EIBZ

(83088EIBZ, Note 2)

-40 to 85 8 Ld SOIC
(Pb-Free)

ISL83088EIU (3088E) -40 to 85 8 Ld MSOP M8.118

PKG.

DWG. #

M14.15

M8.15

M8.118

M14.15

M8.15

M8.118

M14.15

M8.15

Ordering Information (Note 1) (Continued)

PART NO. (BRAND)

ISL83088EIUZ
(3088Z, Note 2)

NOTES:

1. Units also available in Tape and Reel; Add “-T” to suffix.

2. Intersil Pb-free 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 Pb­free 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.

RANGE (°C) PACKAGE

-40 to 85 8 Ld MSOP
(Pb-free)

TEMP.

PKG.

DWG. #

M8.118

2

FN6085.6

September 12, 2005

ISL83080E, ISL83082E, ISL83083E, ISL83085E, ISL83086E, ISL83088E

Truth Tables

TRANSMITTING

INPUTS OUTPUTS

RE

X1101
X1010
0 0 X High-Z High-Z
1 0 X High-Z * High-Z *

NOTE: *Shutdown Mode (See Note 9).

DE DI Z Y

RE

00 X≥ -0.05V 1
00 X≤ -0.2V 0
0 0 X Inputs

1 0 0 X High-Z *
1 1 1 X High-Z

NOTE: *Shutdown Mode (See Note 9).

DE

Half DuplexDEFull Duplex

RECEIVING

INPUTS OUTPUT

A-B RO

Open/Shorted

Pin Descriptions

PIN FUNCTION

RO Receiver output: If A-B ≥ -50mV, RO is high; I f A -B ≤ -200mV, RO is low; RO = High if A and B are unconnected (floating) or shorted.

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

DI Driver input. A low on DI forces output Y low and output Z high. Similarly, a high on DI forces output Y high and output Z low.

Receiver output enable. RO is enabled when RE is low; RO is high impedance when RE is high.

1

GND Ground connection.

A/Y ±15kV HBM ESD Protected RS-485/422 level, noninverting receiver input and noninverting driver output. Pin is an input if DE = 0;

B/Z ±15kV HBM ESD Protected RS-485/422 level, Inverting receiver input and inverting driver output. Pin is an input if DE = 0; pin is an

V

NC No Connection.

pin is an output if DE = 1.

output if DE = 1.
A ±15kV HBM ESD Protected RS-485/422 level, noninverting receiver input.
B ±15kV HBM ESD Protected RS-485/422 level, inverting receiver input.
Y ±15kV HBM ESD Protected RS-485/422 level, noninverting driver output.
Z ±15kV HBM ESD Protected RS-485/422 level, inverting driver output.

System power supply input (4.5V to 5.5V).

CC

3

FN6085.6

September 12, 2005

ISL83080E, ISL83082E, ISL83083E, ISL83085E, ISL83086E, ISL83088E

Typical Operating Circuit

+5V

8

V

RO

1
2

RE

3

DE

DI

4

2

RO

3

RE

4

DE

5

DI

CC

R

B/Z
A/Y

D

GND

5

+5V

14

V

CC

A

R

B

Z

D

Y

GND

6, 7

ISL83082E, ISL83085E, ISL83088E

+5V

+

0.1µF

R

T

7
6

0.1µF

R

T

+

8

V

CC

7

B/Z

6

A/Y

R

GND

5

4

DI

D

3

DE

2

RE

1

RO

ISL83080E, ISL83083E, ISL83086E

+5V

+

0.1µF

R

12

T

11

10
9

0.1µF

R

T

+

14

V

CC

Y

9

Z

10

B

11

A

12

GND

6, 7

DI

5

D

4

DE

3

RE

RO

R

2

4

FN6085.6

September 12, 2005

ISL83080E, ISL83082E, ISL83083E, ISL83085E, ISL83086E, ISL83088E

Absolute Maximum Ratings Thermal Information

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

Input Voltages

DI, DE, RE

. . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to (VCC + 0.3V)

Input/Output Voltages

A, B, Y, Z . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -9V to +13V

A, B, Y, Z (Transient Pulse Through 100Ω) . . . . . . . . . . . . . ±25V

RO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to (V

Short Circuit Duration

CC

+0.3V)

Y, Z. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous

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.

NOTE:

is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.

3. θ

JA

Thermal Resistance (Typical, Note 3)

θ

JA

(°C/W)

8 Ld SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . 105

8 Ld MSOP Package . . . . . . . . . . . . . . . . . . . . . . . . 140

14 Ld SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . 128

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

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

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

(Lead Tips Only)

Operating Conditions

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

Electrical Specifications Test Conditions: V

(Note 4)

PARAMETER SYMBOL TEST CONDITIONS

DC CHARACTERISTICS

Driver Differential V
Driver Differential V

Change in Magnitude of Driver
Differential V
Complementary Output States

OUT

Driver Common-Mode V
Change in Magnitude of Driver

Common-Mode V
Complementary Output States

Logic Input High Voltage V
Logic Input Low Voltage V
DI Input Hysteresis Voltage V
Logic Input Current I
Input Current (A, B) I

Output Leakage Current (Y, Z)
(Full Duplex Versions Only)

Output Leakage Current (Y, Z)
in Shutdown Mode (Full Duplex)

Driver Short-Circuit Current,
V

= High or Low

O

Receiver Differential Threshold
Voltage

Receiver Input Hysteresis ∆V

(no load) V

OUT

(with load) V

OUT

for

OUT

for

OUT

OD1
OD2

∆V

V

OC

∆V

HYS
IN1
IN2

I

IN3

I

IN3

I

OSD1

V

TH

RL = 100Ω (RS-422) (Figure 1A) Full 2 2.9 - V
RL = 54Ω (RS-485) (Figure 1A) Full 1.5 2.4 V
R
RL = 54Ω or 100Ω (Figure 1A) Full - 0.01 0.2 V

OD

RL = 54Ω or 100Ω (Figure 1A) Full - 2.85 3 V
RL = 54Ω or 100Ω (Figure 1A) Full - 0.01 0.1 V

OC

DE, DI, RE Full 2 - - V

IH

DE, DI, RE Full - - 0.8 V

IL

DE, DI, RE Full -2 - 2 µA
DE = 0V, VCC = 0V or 5.5V VIN = 12V Full - 70 125 µA

RE = 0V, DE = 0V, VCC = 0V
or 5.5V

RE = VCC, DE = 0V, VCC = 0V
or 5.5V

DE = VCC, -7V ≤ VY or VZ ≤ 12V (Note 6) Full - - ±250 mA

-7V ≤ VCM ≤ 12V Full -200 -90 -50 mV

VCM = 0V 25 - 20 - mV

TH

= 4.5V to 5.5V; Unless Otherwise Specified. Typicals are at VCC = 5V, TA = 25°C

CC

TEMP

(°C) MIN TYP MAX UNITS

Full - - V

= 60Ω, -7V ≤ VCM ≤ 12V (Figure 1B) Full 1.5 2.6 - V

L

CC

CC

25 - 100 - mV

V

= -7V Full -75 55 - µA

IN

VIN = 12V Full - 7 125 µA
V

= -7V Full -75 11 - µA

IN

VIN = 12V Full - 0 20 µA

= -7V Full -20 9 - µA

V

IN

V

V

5

FN6085.6

September 12, 2005

ISL83080E, ISL83082E, ISL83083E, ISL83085E, ISL83086E, ISL83088E

Electrical Specifications Test Conditions: V

= 4.5V to 5.5V; Unless Otherwise Specified. Typicals are at VCC = 5V, TA = 25°C

CC

(Note 4) (Continued)

TEMP

PARAMETER SYMBOL TEST CONDITIONS

Receiver Output High Voltage V
Receiver Output Low Voltage V
Three-State (high impedance)

I

OZR

IO = -4mA, VID = -50mV Full VCC - 1 4.6 - V

OH

IO = -4mA, VID = -200mV Full - 0.2 0.4 V

OL

0.4V ≤ VO ≤ 2.4V Full -1 0.03 1 µA

(°C) MIN TYP MAX UNITS

Receiver Output Current
Receiver Input Resistance R
Receiver Short-Circuit Current I

OSR

-7V ≤ VCM ≤ 12V Full 96 160 - kΩ

IN

0V ≤ VO ≤ V

CC

Full ±7-±85 mA

SUPPLY CURRENT

No-Load Supply Current (Note 5) I

Shutdown Supply Current I

CC

SHDN

Half Duplex Versions, DE = VCC, RE = X,
DI = 0V or V

All Versions, DE = 0V, RE
Versions, DE = V

DE = 0V, RE = VCC, DI = 0V or V

CC

, RE = X. DI = 0V or V

CC

= 0V, or Full Duplex

CC

Full - 560 700 µA

Full - 530 650 µA

CC

Full - 0.07 2 µA

ESD PERFORMANCE

RS-485 Pins (A, Y, B, Z) Human Body Model (HBM), Pin to GND 25 - ±15 - kV
All Other Pins HBM, per MIL-STD-883 Method 3015 25 - ±7-kV

DRIVER SWITCHING CHARACTERISTICS (115kbps Versions; ISL83080E, ISL83082E)

Driver Differential Output Delay t

PLH, tPHLRDIFF

Driver Differential Output Skew t
Driver Differential Rise or Fall Time t
Maximum Data Rate f
Driver Enable to Output High t

Driver Enable to Output Low t

Driver Disable from Output Low t
Driver Disable from Output High t
Time to Shutdown t
Driver Enable from Shutdown to

t

ZH(SHDN)RL

Output High
Driver Enable from Shutdown to

Output Low

t

ZL(SHDN)RL

SKEW

, t

R
MAX

ZH

ZL

LZ
HZ

SHDN

F

= 54Ω, CL = 100pF (Figure 2) Full 500 780 1300 ns

R

= 54Ω, CL = 100pF (Figure 2) Full - 40 100 ns

DIFF

R

= 54Ω, CL = 100pF (Figure 2) Full 667 1000 1500 ns

DIFF

CD = 820pF (Figure 4, Note 12) Full 115 666 - kbps
RL = 500Ω, CL = 100pF, SW = GND (Figure 3),

Full - 278 1500 ns

(Note 7)
RL = 500Ω, CL = 100pF, SW = VCC (Figure 3),

Full - 35 1500 ns

(Note 7)
RL = 500Ω, CL = 15pF, SW = VCC (Figure 3) Full - 67 100 ns
RL = 500Ω, CL = 15pF, SW = GND (Figure 3) Full - 38 100 ns
(Notes 9, 12) Full 60 160 600 ns

= 500Ω, CL = 100pF, SW = GND (Figure 3),

Full - 400 2000 ns

(Notes 9, 10)

= 500Ω, CL = 100pF, SW = VCC (Figure 3),

Full - 155 2000 ns

(Notes 9, 10)

DRIVER SWITCHING CHARACTERISTICS (500kbps Versions; ISL83083E, ISL83085E)

Driver Differential Output Delay t

PLH, tPHLRDIFF

Driver Differential Output Skew t
Driver Differential Rise or Fall Time t
Maximum Data Rate f
Driver Enable to Output High t

SKEW

, t

R
MAX

ZH

F

= 54Ω, CL = 100pF (Figure 2) Full 250 360 1000 ns

R

= 54Ω, CL = 100pF (Figure 2) Full - 20 100 ns

DIFF

R

= 54Ω, CL = 100pF (Figure 2) Full 200 475 750 ns

DIFF

CD = 820pF (Figure 4, Note 12) Full 500 1000 - kbps
RL = 500Ω, CL = 100pF, SW = GND (Figure 3),

Full - 137 1000 ns

(Note 7)

Driver Enable to Output Low t

Driver Disable from Output Low t

ZL

LZ

RL = 500Ω, CL = 100pF, SW = VCC (Figure 3),

Full - 35 1000 ns

(Note 7)
RL = 500Ω, CL = 15pF, SW = VCC (Figure 3) Full - 65 100 ns

6

FN6085.6

September 12, 2005