SGS Thomson Microelectronics ST232BT, ST232BD, ST232CDR, ST232CD Datasheet



5V POWERED MULTI-CHANNEL

RS-232 DRIVERSAND RECEIVERS

■ SUPPLYVOLTAGERANGE:4.5TO 5.5V

■

SUPPLYCURRENTNO LOAD(TYP):5mA

■ TRANSMITTEROUTPUTVOLTAGESWING

(TYP):±7.8V

■

CONTROLLEDOUTPUTSLEWRATE

■ RECEIVERINPUTVOLTAGERANGE:

■

DATARATE(TYP):220Kbps

■ OPERATINGTEMPERATURERANGE:

-40TO85

■

COMPATIBLEWITHMAX232ANDMAX202

o

C,0 TO70oC

DESCRIPTION

The ST232 is a 2 driver, 2 receiver device
following EIA/TIA-232 and V.28 communication
standard. It is particularly suitable for applications
where ±12V is not available. The ST232 uses a
single 5V power supply and only four external
capacitors (0.1µF). Typical applications are in:
Portable Computers, Low Power Modems,
Interfaces Translation, Battery Powered RS-232
System,Multi-Drop RS-232Networks.

±30V

ST232

N

(PlasticPackage)

(Micro Package)

W

(Micro PackageLarge)T(TSSOPPackage)

D

ORDERCODES

Type Temperature

ST232CN 0 to 70
ST232BN -40 to 85
ST232CD 0 to 70
ST232BD -40 to 85

ST232CDR 0 to 70

ST232BDR -40 to 85

ST232CW 0 to 70

ST232BW -40 to 85
ST232CWR 0 to 70
ST232BWR -40 to 85

ST232CT 0 to 70

ST232BT -40 to 85
ST232CTR 0 to 70
ST232BTR -40 to 85

February 2000

Package Commen ts

Rang e

o

C DIP-16 25 parts per tube / 40 tube per box

o

C DIP-16 25 parts per tube / 40 tube per box

o

C SO-16 (Tube) 50 parts per tube / 20 tube per box

o

C SO-16 (Tube) 50parts per tube / 20 tubeper box

o

C SO-16 (Tape & Reel) 2500 parts per reel

o

C SO-16 (Tape & Reel) 2500 parts per reel

o

C SO-16 Large (Tube) 50 parts per tube / 20 tube per box

o

C SO-16 Large (Tube) 50 parts per tube / 20 tube per box

o

C SO-16 Large (Tape & Reel) 1000 parts per reel

o

C SO-16 Large (Tape & Reel) 1000 parts per reel

o

C TSSOP16 (Tube) only for samples

o

C TSSOP16 (Tube) only for samples

o

C TSSOP16 (Tape & Reel) 2500 parts per reel

o

C TSSOP16 (Tape & Reel) 2500 parts per reel

1/11

ST232

PIN CONFIGURATION

PIN DESCRIPTION

PIN No SYMBOL NAME AND F UNCTION

1C
2 V+ Doubled Voltage Terminal
3C
4C
5C
6 V- Inverted Voltage Terminal
7T2
8R2

9R2
10 T2
11 T1
12 R1
13 R1
14 T1
15 GND Ground
16 V

+ Positive Terminal forthe first Charge Pump Capacitor

1

- Negative Terminal for the first Charge Pump Capacitor

1

+ Positive Terminal for the second Charge Pump Capacitor

2

- Negative Terminal for the second Charge Pump Capacitor

2

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(Note 1)

Symb o l Para met er Val u e Uni t

V

T
R

T

OUT

R

OUT

T

SCTOUT

T

AbsoluteMaximumRatingsarethosevaluesbeyond whichdamagetothedevicemayoccur.Functionaloperationunderthese condition isnotimplied.
Note1:Noexternalsupply canbeappliedtoV+terminalandV- terminal.

2/11

Supply Voltage -0.3 to 6 V

CC

Transmitter Input Voltage Range -0.3 to (VCC+ 0.3) V

IN

Receiver Input Voltage Range ±30 V

IN

Transmitter Output Voltage Range (V+ + 0.3) to (V- - 0.3) V
Receiver Output Voltage Range -0.3 to (VCC+ 0.3) V
Short Circuit Duration on T
Storage Temperature Range -65 to +150

stg

OUT

infinite

o

C

ST232

ELECTRICAL CHARACTERISTICS

(C
TypicalValus are referred to T

Symbol Parameter Test Conditions Value Unit

TRANSMITTERELECTRICAL CHARACTERISTICS

(C
TypicalValus are referred to T

Symbol Parameter Test Conditions Value Unit

Note1:Measuredfrom3Vto -3Vor from-3Vto3V.
Note2:One trasmitter output is loaded with R

= 0.1µF, VCC=5V±10% TA= -40 to 85oC, unless otherwisespecified.

1-C4

=25oC)

A

I

SUPPLYVCC

1-C4

V

TOUT

Power Supply Current No Load, TA=25oC 5 10 mA

= 0.1µF, VCC=5V±10%, TA= -40 to 85oC, unless otherwise specified.

=25oC)

A

Output Voltage Swing All Transmitter outputs are

loaded with 3KΩto GND

Logic Pull-Up Current TIN= 0 V 15 200

I

TIL

Input Logic Threshold Low 0.8 V

V

TIL

V
SR

R

Input Logic Threshold High 2 V

TIH

Transition Slew Rate TA=25oC, VCC=5V,

T

D

Data Rate (Note 2) 120 220 Kbits/s

R

Transmitter Output Resistance VCC= V+ = V- = 0V

TOUT

Transmitter Output Short Circuit

I

SC

=3to7KΩ,

R

L

= 50 to 2500 pF (Note 1)

C

L

=±2V

V

OUT

one T

to GND ±10 ±60 mA

XOUT

Current

=3KΩto7KΩ,CL= 50 to 1000pF

L

Min. Typ. Max.

Min. Typ. Max.

±5 ±7.8 V

µ

730V/

300 Ω

A

s

µ

RECEIVERELECTRICAL CHARACTERISTICS

(C
TypicalValus are referred to T

Symbol Parameter Test Conditions Value Unit

Note1:RS-232INtoTTL-CMOSOUT(from50% to50%)

= 0.1µF, VCC=5V±10%, TA= -40 to 85oC, unless otherwise specified.

1-C4

=25oC)

A

V

Receiver Input Voltage Operating

RIN

Range

R

V
V

V

V

V

I

RS-232 Input Resistance TA=25oC, VCC=5V,

RIN

RS-232 Input Logic Threshold Low TA=25oC, VCC= 5 V 0.8 1.2 V

RIL

RS-232 Input Logic Threshold High TA=25oC, VCC= 5 V 1.7 2.4 V

RIH

RS-232 Input Hysteresis VCC= 5 V 0.2 0.5 1 V

RIHYS

TTL/CMOS Output Voltage Low I

ROL

TTL/CMOS Output Voltage High I

ROH

Propagation Delay Time CL=150pF (Note 1) 0.3 1

t

dR

Receiver Output Short Circuit Current

SCR

=5V

V

RIN

= 3.2mA (to VCC) 0.4 V

OUT

= 1mA (to GND) 3.5 VCC-0.4 V

OUT

Min. Typ. Max.

-30 30 V

357K

µ

10 mA

±

Ω

s

3/11

ST232

APPLICATION CIRCUITS

TTL / CMOS INPUTS

(note 1, note 2)

C5

1

C1+

+

C1

3

C1-

4

C2+

+

C2

C2-

5

11

IN

10

T2

IN

+5V INPUT

+

+5VTO +10V

VOLTAGE

DOUBLER

+10VTO -10V

VOLTAGE

INVERTER
+5V
400K

+5V
400K

16

Vcc

T1

T2

C3

T1

T2

V+

V-

OUTT1

OUT

+

2

+10V

6

-10V

C4

+

14

RS 232OUTPUTS

7

TTL / CMOS OUTPUTS

Note1:C
Note2:C

capacitorscanevenbe 1 µFones.

1-4

canbecommonor biasedcapacitors.

1-4

CapacitanceValue (µF)

C1 C2 C3 C4 C5

0.1 0.1 0.1 0.1 0.1

12

9

OUT

R1

R2OUT

R1

R2

GND

15

R1IN

5K

R2

5K

13

RS 232INPUTS

IN

8

4/11