SGS Thomson Microelectronics ST3232CTR, ST3232CN, ST3232CD, ST3232BWR, ST3232BW Datasheet

ST3232

3 TO 5.5V, LOW POWER, UP TO 400KBPS,

RS-232 DRIVERS AND RECEIVERS

■ 300µA SUPPLY CURRENT

■ 300Kbps MINIMUM GUARENTEED DATA

RATE

■ 6V/µs MINI MU M GUAR ANTEED SLEW RATE

■ MEET EIA/TIA-232 SPECIFICATIONS DOWN

TO 3V

■ A VAILABLE IN DIP-16, SO-16, SO - 1 6 LARGE

AND TSSOP16

DESCRIPTION

The ST3232 is a 3V powered EIA/TIA-232 and
V.28/V.24 communication interface with low
power requirements, high data-rate capabilities.
ST3232 has a proprietary low dropout transmitter
output stage providing t rue RS-232 performance
from 3 to 5.5V supplies. The device requires only
four small 0.1µF standard external capa citors for
operations from 3V supply.
The ST3232 has two receivers and two drivers.
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.

DIP SOP

SOP Large

TSSOP

ORDERING CODES

Type

ST3232CN 0 to 70 °C DIP-16 25parts per tube / 40tube per box
ST3232BN -40 to 85 °C DIP-16 25parts per tube / 40tube per box
ST3232CD 0 to 70 °C SO-16 (Tube) 50parts per tube / 20tube per box

ST3232BD -40 to 85 °C SO-16 (Tube) 50parts per tube / 20tube per box
ST3232CDR 0 to 70 °C SO-16 (Tape & Reel) 2500 parts per reel
ST3232BDR -40 to 85 °C SO-16 (Tape & Reel) 2500 parts per reel

ST3232CW 0 to 70 °C SO-16 Large (Tube) 49parts per tube / 25tube per box

ST3232BW -40 to 85 °C SO-16 Large (Tube) 49parts per tube / 25tube per box
ST3232CWR 0 to 70 °C SO-16 Large (Tape & Reel) 1000 parts per reel
ST3232BWR -40 to 85 °C SO-16 Large (Tape & Reel) 1000 parts per reel

ST3232CTR 0 to 70 °C TSSOP16 (Tape & Reel) 2500 parts per reel

ST3232BTR -40 to 85 °C TSSOP16 (Tape & Reel) 2500 parts per reel

Temperature

Range

Package Comments

1/11May 2002

ST3232

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

+ Positive Terminal for the first Charge Pump Capacitor

C

1

- Negative Terminal for the first Charge Pump Capacitor

C

1

C

+ Positive Terminal for the second Charge Pump Capacitor

2

C

- Negative Terminal for the second Charge Pump Capacitor

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.

2/11

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

ST3232

ELECTRICAL CHARACTERISTICS

- C4 = 0.1µF, 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

I

SUPPLYVCC

Power Supply Current No Load VCC = 3V ±10% TA = 25°C 0.3 1 mA

LOGIC INPUT ELECTRICAL CHARACTERISTICS

- C4 = 0.1µF, 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

V

Note 1: Transmitter in put hysteresi s is typically 25 0m V

Input Logic Threshold Low T-IN (Note 1) 0.8 V

TIL

Input Logic Threshold High VCC = 3.3V

TIH

Input Leakage Current T-IN

I

IL

TRANSMITTER 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

R

I

Output Voltage Swing All Transmitter outputs are loaded with

TOUT

Transmitter Output

TOUT

Resistance
Output Short Circuit

TSC

Current

= 25°C)

A

No Load V

= 25°C)

A

V

= 5V

CC

= 25°C)

A

= 5V ±10% TA = 25°C 1 2 mA

CC

3KΩ to GND
VCC = V+ = V- = 0V V

VCC = 3V to 5V V

2

2.4

5

±

= ± 2V 300 10M

OUT

= ± 12V

OUT

0.01

±

5.4 V

±

1

±

60 mA

±

V
V

A

µ

Ω

RECEIVER 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

V

V

V

RIHYS

R

V

V

Receiver Input Voltage

RIN

Operating Range
RS-232 Input Threshold

RIL

Low
RS-232 Input Threshold

RIH

High
Input Hysteresis 0.3 V

Input Resistance TA = 25°C 3 5 7 K

RIN

TTL/CMOS Output Voltage

ROL

Low
TTL/CMOS Output Voltage

ROH

High

= 25°C)

A

TA = 25°C VCC = 3.3V
T

= 25°C VCC = 5V

A

TA = 25°C VCC = 3.3V
T

= 25°C VCC = 5V

A

I

= 1.6mA 0.4 V

OUT

I

= -1mA VCC-0.6 VCC-0.1 V

OUT

-25 25 V

0.6

0.8

1.2

1.5

1.5

1.8

2.4

2.4

V
V

V
V

Ω

3/11

ST3232

TIMING CHARACTERISTICS

- C4 = 0.1µF, 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

D

Data Transfer Rate RL = 3K

R

t

PHLR

t

|t

- t
|t

- t
S

Transmi tter Skew is measured at th e tr ansmitter z ero cross poin ts

Propagation Delay Input to
Output

PLHR

Transmitter Propagation

PHLT

Delay Difference

|

THL

Receiver Propagation Delay

PHLR

Difference

|

THR

Trnasition Slew Rate TA = 25°C RL = 3KΩ to 7K

RT

APPLICATION CIRCUITS

= 25°C)

A

Ω

CL2= 1000pF

300 400 Kbps
one trasmitter switching
R

XIN

= R

XOUT

CL = 150pF 0.2

(Note 1) 100 ns

50 ns

VCC = 3.3V

Ω

measured from +3V to -3V or -3V to +3V
C

= 150pF to 1000pF

L

C

= 150pF to 2500pF

L

6
4

30
30

V/µs
V/µs

s

µ

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 0.33

4/11

C1 C2 C3 C4 Cbypass