SGS Thomson Microelectronics ST3232ECWR, ST3232ECTR, ST3232ECN, ST3232ECDR, ST3232ECD Datasheet

ST3232E

±15KV ESD- P ROTEC TE D, 3 TO 5.5V, LOW POWER ,

UP TO 250KBPS, RS-232 DRIVERS AND RECEIVERS

■ ESD PROTECTIO FOR RS-232 I/O PINS

±15KV HUMAN BODY MODEL
±8KV IEC 1000-4-2 CONTACT DISCHARGE

■ 300µA SUPPL Y CURRENT

■ 250Kbps MINIMUM GUARENTEED DATA

RATE

■ 6V/µs MINIMUM GUARAN TEED SLEW RATE

■ MEET EIA/TIA-232 SPECIFICATIONS DOWN

TO 3V

■ A VAILABLE IN DIP-16, SO-16, SO -16 LARGE

SSOP16 AND TSSOP16

DESCRIPTION

The ST3232E is a 3V powered EIA/TIA-23 2 and
V.28/V.24 communication interfaces with low
power requirements, high data-rate capabilities
and enhanced electrostatic discharge (ESD)
protection to ±8kV using IEC1000-4-2 Contact
Discharge and ±15kV using the Human Body
Model. ST3232E has a proprietary low dropout
transmitter output stage providing true RS-232
performance from 3 to 5V supplies witha a dua l
charge pump. The charge pump requires only four
small 0.1µF standard external capacitors for
operations from 3V supply.
The ST3232E has two receivers and two drivers.

DIP SOP

SOP Large

TSSOPSSOP

The device is guaranteed to run at data rates of
250Kbps while maintaining RS-232 output levels.
Typical applications are Notebook, Subnotebook
and Palmtop Computers, Battery Powered
Equipment, Hand-Held Equipment, Peripherals
and Printers.

ORDERING CODES

Type

ST3232ECN 0 to 70 °C DIP-16 25parts per tube / 40tube per box
ST3232EBN -40 to 85 °C DIP-16 25parts per tube / 40tube per box
ST3232ECD 0 to 70 °C SO-16 (Tube) 50parts per tube / 20tube per box

ST3232EBD -40 to 85 °C SO-16 (Tube) 50parts per tube / 20tube per box
ST3232ECDR 0 to 70 °C SO-16 (Tape & Reel) 2500 parts per reel
ST3232EBDR -40 to 85 °C SO-16 (Tape & Reel) 2500 parts per reel

ST3232ECW 0 to 70 °C SO-16 Large (Tube) 50parts per tube / 20tube per box

ST3232EBW -40 to 85 °C SO-16 Large (Tube) 50parts per tube / 20tube per box
ST3232ECWR 0 to 70 °C SO-16 Large (Tape & Reel) 1000 parts per reel
ST3232EBWR -40 to 85 °C SO-16 Large (Tape & Reel) 1000 parts per reel

ST3232ECPR 0 to 70 °C SSOP16 (Tape & Reel) 1350 parts per reel
ST3232EBPR -40 to 85 °C SSOP16 (Tape & Reel) 1350 parts per reel
ST3232ECTR 0 to 70 °C TSSOP16 (Tape & Reel) 2500 parts per reel

ST3232EBTR -40 to 85 °C TSSOP16 (Tape & Reel) 2500 parts per reel

Temperature

Range

Package Comments

1/16April 2003

ST3232E

PIN CONFIGURATION

PIN DESCRIPTION

PlN N° SYMBOL NAME AND FUNCTION

1
2 V+ Doubled Voltage Terminal
3
4
5
6 V- Inverted Voltage Terminal
7
8

9
10
11
12
13
14
15 GND Ground
16

C1+ Positive Terminal for the first Charge Pump Capacitor

- Negative Terminal for the first Charge Pump Capacitor

C

1

+ Positive Terminal for the second Charge Pump Capacitor

C

2

- Negative Terminal for the second Charge Pump Capacitor

C

2

T2

R2

R1

T1

R2

T2
T1

R1

V

OUT

IN

OUT

IN
IN

OUT

IN

OUT

CC

Second Transmitter Output Voltage
Second Receiver Input Voltage
Second Receiver Output Voltage
Second Transmitter Input Voltage
First Transmitter Input Voltage
First Receiver Output Voltage
First Receiver Input Voltage
First Transmitter Output Voltage

Supply Voltage

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

V+

V- Inverted Voltage Terminal 0.3 to -7 V

V+ +|V-| 13 V

T
R

T

OUT

R

OUT

t

SHORT

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied. V+ and V- can have a maximum magnitude of +7V, but their absolute addition can not exceed 13 V.

2/16

Supply Voltage

CC

Doubled Voltage Terminal (V

Transmitter Input Voltage Range

IN

Receiver Input Voltage Range

IN

Transmitter Output Voltage Range
Receiver Output Voltage Range -0.3 to (VCC + 0.3)
Transmitter Output Short to GND Time

-0.3 to 6 V

- 0.3) to 7

CC

-0.3 to 6 V

± 25 V

± 13.2 V

Continuous

V

V

ST3232E

ESD PERFORMANCE: TRANSMITTER OUTPUTS, RECEIVER INPUTS

Symbol Parameter Test Conditions Min. Typ. Max. Unit

ESD ESD Protection Voltage Human Body Model ±15 kV
ESD ESD Protection Voltage IEC-1000-4-2 ±8kV

ELECTRICAL CHARACTERISTICS

(C

- C4 = 0.1µF, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified.

1

Typical values are referred to T

Symbol Parameter Test Conditions Min. Typ. Max. Unit

I

SUPPLYVCC

Power Supply Current No Load VCC = 3V or 5V TA = 25°C 0.3 1 mA

LOGIC INPUT ELECTRICAL CHARACTERISTICS

(C

- C4 = 0.1µF, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified.

1

Typical values are referred to T

Symbol Parameter Test Conditions Min. Typ. Max. Unit

Input Logic Threshold Low T-IN 0.8 V

V

TIL

V

V

Transmitter Input

HYS

Histeresys
Input Logic Threshold High VCC = 3.3V 2 V

TIH

Input Leakage Current T-IN ± 0.01 ± 1 µA

I

IL

= 25°C)

A

= 25°C)

A

= 5V 2.4

V

CC

0.25 V

TRANSMITTER ELECTRICAL CHARACTERISTICS

- C4 = 0.1µF tested at VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified.

(C

1

Typical values are referred to T

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

R

I

Output Voltage Swing All Transmitter outputs are loaded with

TOUT

Transmitter Output

TOUT

Resistance
Output Short Circuit

TSC

Current

I

Output Leakage Current VCC = 0V or 3V to 5.5V V

TOL

= 25°C)

A

3KΩ to GND
VCC = V+ = V- = 0V V

Transmitters Disable

± 5 ± 5.4 V

= ± 2V 300 10M Ω

OUT

± 60 mA

OUT

= ± 12V

± 25 µA

3/16

ST3232E

RECEIVER ELECTRICAL CHARACTERISTICS

(C

- C4 = 0.1µF tested at VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified.

1

Typical values are referred to T

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

V

V

V

R

V

V

Receiver Input Voltage

RIN

Operating Range
RS-232 Input Threshold

RIL

Low
RS-232 Input Threshold

RIH

High
Input Hysteresis 0.5 V

RIHYS

Input Resistance TA = 25°C 3 5 7 KΩ

RIN

TTL/CMOS Output Voltage

ROL

Low
TTL/CMOS Output Voltage

ROH

High

TIMING CHARACTERISTICS

(C

- C4 = 0.1µF, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified.

1

Typical values are referred to T

Symbol Parameter Test Conditions Min. Typ. Max. Unit

Data Transfer Rate RL = 3KΩ CL2= 1000pF

D

R

t

PHLR

t

t

t

|t

- t
|t

- t

Transmi tter Skew is measured at the transmi tter zero cross points

Propagation Delay Input to
Output

PLHR

Receiver Output Enable

OER

Time
Receiver Output Disable

ODR

Time
Transmitter Propagation

PHLT

Delay Difference

|

THL

Receiver Propagation Delay

PHLR

Difference

|

THR

Trnasition Slew Rate TA = 25°C RL = 3KΩ to 7KΩ VCC = 3.3V

S

RT

= 25°C)

A

-25 25 V

TA = 25°C VCC = 3.3V 0.6 1.1 V

= 25°C VCC = 5V 0.8 1.5

T

A

TA = 25°C VCC = 3.3V 1.4 2.4 V

= 25°C VCC = 5V 1.8 2.4

T

A

I

= 1.6mA 0.4 V

OUT

I

= -1mA VCC-0.6 VCC-0.1 V

OUT

= 25°C)

A

250 Kbps
one trasmitter switching
R

XIN

= R

XOUT

CL = 150pF 0.15 µs

Normal Operation 50 ns

Normal Operation 50 ns

(Note 1) 200 ns

50 ns

measured from +3V to -3V or -3V to +3V
CL = 150pF to 1000pF

C

= 150pF to 2500pF

L

6
4

30
30

V/µs
V/µs

4/16

APPLICATION CIRCUITS

ST3232E

CAPACITANCE VALUE (µF)

V

CC

3.0 to 3.6 0.1 0.1 0.1 0.1 0.1

4.5 to 5.5 0.047 0.33 0.33 0.33 0.1

3.0 to 5.5 0.1 0.47 0.47 0.47 0.1

C1 C2 C3 C4 Cbypass

5/16