Datasheet ST232A Datasheet (SGS Thomson Microelectronics)



ST232A

VERY HIGHSPEED,ULTRALOWPOWERCONSUMPTION

5V POWERED RS-232 DRIVERS AND RECEIVERS

■ SUPPLYVOLTAGERANGE:4.5TO 5.5V

■

SUPPLYCURRENTNO LOAD(TYP): 1.5mA

■ TRANSMITTEROUTPUTVOLTAGESWING

(TYP):±9V

■

TRANSITIONSLEWRATE (TYP.):12V/µs

■ RECEIVERPROPAGATIONDELAY

(TYP.):0.1µs

■ RECEIVERINPUTVOLTAGERANGE:

■ DATARATE(TYP):400Kbp/s

■

OPERATINGTEMPERATURERANGE:

-40TO 85

o

C,0 TO70oC

DESCRIPTION

The ST232A 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

N

(PlasticPackage)

(Micro Package)

D

W

(Micro PackageLarge)T(TSSOPPackage)

ORDERCODES

Type Temperature

ST232ACN 0 to 70
ST232ABN -40 to 85
ST232ACD 0 to 70

ST232ABD -40 to 85
ST232ACDR 0 to 70
ST232ABDR -40 to 85

ST232ACW 0 to 70

ST232ABW -40 to 85
ST232ACWR 0 to 70
ST232ABWR -40 to 85

ST232ACTR 0 to 70

ST232ABTR -40 to 85

October 1999

Package Commen ts

Rang e

o

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

o

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

o

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

o

C SO-16 (Tube) 50 parts per tube / 20 tube per 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 tubeper 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 (Tape & Reel) 2500 parts per reel

o

C TSSOP16 (Tape & Reel) 2500 parts per reel

1/10

ST232A

PIN CONFIGURATION

PIN DESCRIPTION

PIN No SYMBOL NAM E AND F UNC T I O N

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 for the 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

Symb o l Para met er Val u e Uni t

V

V+ Extra Positive Voltage (V

V- Extra Negative Voltage 0.3 to -13.2 V

T

R

T

OUT

R

OUT

T

SCTOUT

AbsoluteMaximumRatingsarethosevaluesbeyondwhichdamagetothedevicemayoccur. Functionaloperationunderthese conditionisnot implied.

2/10

Supply Voltage -0.3 to 6 V

CC

-0.3)to 13.2 V

CC

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

IN

Receiver Input Voltage Range

IN

30 V

±

Transmitter Output Voltage Range ±15 V
Receiver Output Voltage Range -0.3 to (VCC+ 0.3) V
Short Circuit Duration on T

OUT

infinite

ST232A

ELECTRICAL CHARACTERISTICS

(C
TypicalValus are referred to T

Symbol Parameter Test Conditions Value Unit

TRANSMITTER ELECTRICAL CHARACTERISTICS

(C
TypicalValus are referred to T

Symbol Parameter Test Conditions Value Unit

Note1:Measuredfrom3Vto -3Vor from-3V to3V.
Note2: One trasmitter output is loaded with R

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

1-C4

=25oC)

A

I

SUPPLYVCC

1-C4

V

TOUT

Power Supply Current No Load 1.5 4 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=0V 5 40

I

TIL

Input Logic Threshold Low 0.8 1.4 V

V

TIL

V
SR

R

Input Logic Threshold High 1.4 2 V

TIH

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

T

D

Data Rate (Note 2) 200 400 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 ±7 ±22 mA

XOUT

Current
Propagation Delay Time TTL-CMOS IN to RS-232 OUT

t

dT

=3KΩ to7KΩ,CL= 50to 1000pF

L

= 150 pF (50% to 50%)

C

L

Min. Typ. Max.

Min. Typ. Max.

±5 ±9V

µ

61230V/

300 10M Ω

1.3 3.5

µ

A

s

µ

s

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, 357K

RIN

RS-232 Input Logic Threshold Low 0.8 1.3 V

RIL

RS-232 Input Logic Threshold High 1.8 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

Receiver Output Short Circuit

SCR

Current

Propagation Delay Time CL=150pF (Note 1) 0.1 0.5

t

dR

= 3.2mA (to VCC) 0.2 0.4 V

OUT

= 1mA (to GND) 3.5 VCC-0.2 V

OUT

to GND
to V

CC

Min. Typ. Max.

-30 30 V

2

10

10
30

mA
mA

µ

Ω

s

3/10

ST232A

APPLICATION CIRCUITS

TTL / CMOS INPUTS

(note 1, note2)

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

capacitorscan even be1 µFones.

1-4

canbecommonorbiasedcapacitors.

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

4/10

ST232A

DriverVoltage Transfer Characteristics

DriverShort Circuit Output Currentvs
Temperature

DriverOutput Current vs OutputVoltage

DriverShort Circuit Supply Current vs
Temperature

ReceiverThresholdvs SupplyVoltage

ReceiverThresholdvs Temperature

5/10

ST232A

Plastic DIP-16 (0.25) MECHANICAL DATA

DIM.

MIN. TYP. MAX. MIN. TYP. MAX.

a1 0.51 0.020

B 0.77 1.65 0.030 0.065
b 0.5 0.020

b1 0.25 0.010

D 20 0.787
E 8.5 0.335
e 2.54 0.100

e3 17.78 0.700

F 7.1 0.280

I 5.1 0.201
L 3.3 0.130
Z 1.27 0.050

mm inch

6/10

P001C

SO-16 MECHANICAL DATA

ST232A

DIM.

MIN. TYP. MAX. MIN. TYP. MAX.

A 1.75 0.068
a1 0.1 0.2 0.004 0.007
a2 1.65 0.064

b 0.35 0.46 0.013 0.018
b1 0.19 0.25 0.007 0.010

C 0.5 0.019
c1 45 (typ.)

D 9.8 10 0.385 0.393

E 5.8 6.2 0.228 0.244

e 1.27 0.050
e3 8.89 0.350

F 3.8 4.0 0.149 0.157

G 4.6 5.3 0.181 0.208

L 0.5 1.27 0.019 0.050

M 0.62 0.024

S 8 (max.)

mm inch

P013H

7/10

ST232A

SO16L MECHANICAL DATA

DIM.

MIN. TYP. MAX. MIN. TYP. MAX.

A 2.65 0.104
a1 0.1 0.2 0.004 0.008
a2 2.45 0.096

b 0.35 0.49 0.014 0.019
b1 0.23 0.32 0.009 0.012

C 0.5 0.020
c1 45 (typ.)

D 10.1 10.5 0.397 0.413

E 10.0 10.65 0.3.93 0.419

e 1.27 0.050
e3 8.89 0.350

F 7.4 7.6 0.291 0.300

L 0.5 1.27 0.020 0.050

M 0.75 0.029

S 8 (max.)

mm inch

8/10

P013I

TSSOP16 MECHANICAL DATA

ST232A

DIM.

mm inch

MIN. TYP. MAX. MIN. TYP. MAX.

A 1.1 0.433

A1 0.05 0.10 0.15 0.002 0.004 0.006

A2 0.85 0.9 0.95 0.335 0.354 0.374

b 0.19 0.30 0.0075 0.0118

c 0.09 0.20 0.0035 0.0079

D 4.9 5 5.1 0.193 0.197 0.201

E 6.25 6.4 6.5 0.246 0.252 0.256

E1 4.3 4.4 4.48 0.169 0.173 0.176

e 0.65 BSC 0.0256 BSC

K0

o

o

4

o

8

o

0

o

4

L 0.50 0.60 0.70 0.020 0.024 0.028

o

8

A2

A

A1

PIN 1 IDENTIFICATION

b

e

c

K

L

E

D

E1

1

9/10

ST232A

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of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is
granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are
subject to change without notice. Thispublication supersedes and replaces all information previously supplied. STMicroelectronics products
are not authorized for use as critical components in lifesupport devices or systems withoutexpress written approval of STMicroelectronics.

The ST logo is a registered trademark of STMicroelectronics

 1999 STMicroelectronics – Printed in Italy– All RightsReserved

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