intersil ISL83387E DATA SHEET

®

www.BDTIC.com/Intersil

ISL83387E

Data Sheet July 8, 2005

+/-15kV ESD Protected, +3V to +5.5V,
1Microamp, 250kbps, RS-232
Transceivers with Enhanced Automatic
Powerdown and a Separate Logic Supply

The Intersil ISL83387E is a 3.0V to 5.5V powered RS-232
transceiver which meets ElA/TIA-232 and V.28/V.24
specifications, even at V

±15kV ESD protection (IEC61000-4-2 Air Gap and Human

Body Model) on transmitter outputs and receiver inputs
(RS-232 pins). Targeted applications are PDAs, Palmtops,
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 enhanced automatic powerdown functions, reduce the
standby supply current to a 1µA trickle. TSSOP 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 ISL83387E features a V
output levels and input thresholds to values compatible with
the V

This device includes an enhanced automatic powerdown
function which powers down the on-chip power-supply and
driver circuits. This occurs when all receiver and transmitter
inputs detect no signal transitions for a period of 30 seconds.
It power back up, automatically, whenever it senses a
transition on any transmitter or receiver input.

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

CC

= 3.0V. Additionally, it provides

CC

pin that adjusts the logic pin

L

FN6040.1

Features

•VL Supply Pin for Compatibility with Mixed Voltage
Systems

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

• Low Power, Pin Compatible Upgrade for MAX3387E

• Manual and Enhanced Automatic Powerdown Features

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

• On-Chip Charge Pumps Require Only Four External

0.1µF Capacitors

• Receivers Stay Active in Powerdown

• Very Low Supply Current . . . . . . . . . . . . . . . . . . . . 300µA

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

• Wide Power Supply Range . . . . . . . Single +3V to +5.5V

• Low Supply Current in Powerdown State. . . . . . . . . < 1µA

• Pb-Free Plus Anneal Available (RoHS Compliant)

±15kV (IEC61000)

Applications

• Any System Requiring RS-232 Communication Ports

- Battery Powered, Hand-Held, and Portable Equipment

- Laptop Computers, Notebooks, Palmtops

- Digital Cameras

- PDA’s and PDA Cradles

- Cellular/Mobile Phones

Table 1 summarizes the features of the ISL83387E, while
Application Note AN9863 summarizes the features of each
device comprising the 3V RS-232 family.

Ordering Information

PAR T N O.

(BRAND)

ISL83387EIV
(83387EIV)

ISL83387EIV-T
(83387EIV)

ISL83387EIVZ (Note)
(83387EIVZ)

ISL83387EIVZ-T (Note)
(83387EIVZ)

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.

TEMP.

RANGE (°C) PACKAGE

-40 to 85 24 Ld TSSOP M24.173

-40 to 85 Tape and Reel M24.173

-40 to 85 24 Ld TSSOP
(Pb-free)

-40 to 85 Tape and Reel
(Pb-free)

1

DWG. #.

M24.173

M24.173

PKG.

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

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

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

Copyright © Intersil Americas Inc. 2003, 2005. All Rights Reserved

ISL83387E

www.BDTIC.com/Intersil

TABLE 1. SUMMARY OF FEATURES

PART NUMBER

NO. OF

Tx.

NO. OF

Rx.

DATA RATE

(kbps)

Rx. ENABLE

FUNCTION?

LOGIC

V

L

SUPPLY PIN?

MANUAL

POWER- DOWN?

ENHANCED AUTOMATIC

POWERDOWN FUNCTION?

ISL83387E 3 3 250 NO YES YES YES

Pinout

ISL83387E (TSSOP)

TOP VIEW

24

C1+

V+
C1­C2+

C2-

T1
T2

INVALID

T3

FORCEON

R3

OUT

1
2
3
4
5

V-

6
7

IN

8

IN

9

10

IN

11
12

FORCEOFF
V

23

CC

GND

22
21

T1
T2

20

T3

19

R1

18

R2

17
16

R3
V

15

L

R1

14

R2

13

OUT
OUT
OUT

IN
IN
IN

OUT
OUT

Pin Descriptions

PIN FUNCTION

V

CC

V+ Internally generated positive transmitter supply (+5.5V).

V- Internally generated negative transmitter supply (-5.5V).

GND Ground connection.

C1+ External capacitor (voltage doubler) is connected to this lead.

C1- External capacitor (voltage doubler) is connected to this lead.

C2+ External capacitor (voltage inverter) is connected to this lead.

C2- External capacitor (voltage inverter) is connected to this lead.

T

T

OUT

R

R

OUT

V

INVALID

FORCEOFF

FORCEON Active high input to override automatic powerdown circuitry thereby keeping transmitters active. (FORCEOFF

System power supply input (3.0V to 5.5V).

TTL/CMOS compatible transmitter Inputs. The switching point is a function of the VL voltage.

IN

±15kV ESD Protected, RS-232 level (nominally ±5.5V) transmitter outputs.

±15kV ESD Protected, RS-232 compatible receiver inputs.

IN

TTL/CMOS level receiver outputs. Swings between GND and VL.

Logic-Level Supply. All TTL/CMOS inputs and outputs are powered by this supply.

L

Active low output that indicates if no valid RS-232 levels are present on any receiver input. Swings between GND and VL.

Active low to shut down transmitters and on-chip power supply. This overrides any automatic circuitry and FORCEON (see Table 2).
The switching point is a function of the V

switching point is a function of the V

L

voltage.

L

voltage.

must be high). The

2

FN6040.1

July 8, 2005

Typical Operating Circuit

www.BDTIC.com/Intersil

ISL83387E

TTL/CMOS

LOGIC LEVELS

+3.3V

0.1µF

0.1µF

R1

R2

R3

C

C

T1

T2

T3

OUT

OUT

OUT

+

0.1µF
1

1

2

IN

IN

IN

C1+

+

3

C1-

4

C2+

+

5

C2-

7

8

10

14

13

12

23

V

CC

T

1

T

2

T

3

R

1

R

2

R

3

V+

V-

5kΩ

5kΩ

5kΩ

2

C

3

+

0.1µF

6

C

4

0.1µF

+

21

T1

OUT

20

T2

19

T3

18

R1

17

R2

16

R3

OUT

OUT

IN

IN

IN

RS-232
LEVELS

RS-232
LEVELS

LOGIC V

CC

0.1µF

TO POWER

CONTROL LOGIC

V

15

11

FORCEON

24

FORCEOFF

9

INVALID

L

GND

22

+

V

CC

3

FN6040.1

July 8, 2005

ISL83387E

www.BDTIC.com/Intersil

Absolute Maximum Ratings Thermal Information

VCC to Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6V

V

to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 7V

L

V+ to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 7V

V- to Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +0.3V to -7V

V+ to V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14V

Input Voltages

, FORCEON, FORCEOFF . . . . . . . . . . . . . . . . . . -0.3V to 6V

T

IN

R

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±25V

IN

Output Voltages

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±13.2V

T

OUT

R

, INVALID. . . . . . . . . . . . . . . . . . . . . . . . -0.3V to (VL +0.3V)

OUT

Short Circuit Duration

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous

T

OUT

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:

1. θ

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

JA

Thermal Resistance (Typical, Note 1)

24 Ld TSSOP Package . . . . . . . . . . . . . . . . . . . . . . 140

Moisture Sensitivity (see Technical Brief TB363)

TSSOP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Level 1

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

Maximum Storage Temperature Range . . . . . . . . . . -65

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

(Lead Tips Only)

θ

(oC/W)

JA

o

C to 150oC

Operating Conditions

Temperature Range

ISL83387EIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40

o

C to 85oC

o

o

C

C

Electrical Specifications Test Conditions: V

Typicals are at T

PARAMETER TEST CONDITIONS

DC CHARACTERISTICS

Supply Current, Automatic
Powerdown

Supply Current, Powerdown FORCEOFF

Supply Current,
Automatic Powerdown Disabled

LOGIC AND TRANSMITTER INPUTS

Input Logic Threshold Low T

Input Logic Threshold High T

Transmitter Input Hysteresis 25 - 0.5 - V

Input Leakage Current T

RECEIVER OUTPUTS

Output Voltage Low I

Output Voltage High I

RECEIVER INPUTS

Input Voltage Range Full -25 - 25 V

Input Threshold Low V

Input Threshold High V

Input Hysteresis 25 - 0.5 - V

Input Resistance 25357kΩ

TRANSMITTER OUTPUTS

Output Voltage Swing All Transmitter Outputs Loaded with 3kΩ to Ground Full ±5.0 ±5.4 - V

Open, FORCEON = GND, FORCEOFF =V

All R

IN

All Outputs Unloaded, FORCEON = FORCEOFF

= 3.15V

V

CC

, FORCEON, FORCEOFF VL = 3.3V or 5V Full - - 0.8 V

IN

, FORCEON, FORCEOFF VL = 5V Full 2.4 - - V

IN

, FORCEON, FORCEOFF Full - ±0.01 ±1.0 µA

IN

= 1.6mA Full - - 0.4 V

OUT

= -1.0mA Full VL - 0.6 VL - 0.1 - V

OUT

= VL = 5.0V 25 0.8 1.5 - V

CC

V

= VL = 3.3V 25 0.6 1.2 - V

CC

= VL = 5.0V 25 - 1.8 2.4 V

CC

= VL = 3.3V 25 - 1.5 2.4 V

V

CC

= 3V to 5.5V, C1 - C4 = 0.1µF, VL = VCC; Unless Otherwise Specified.

CC

= 25oC, VCC = VL = 3.3V

A

TEMP

o

(

C) MIN TYP MAX UNITS

CC

= GND 25 - 1 10 µA

=VCC,

V

= 2.5V Full - - 0.6 V

L

V

= 3.3V Full 2.0 - - V

L

V

= 2.5V Full 1.4 - - V

L

= 1.8V 25 - 0.9 - V

V

L

25 - 1 10 µA

25 - 0.3 1 mA

4

FN6040.1

July 8, 2005