SGS Thomson Microelectronics ST26C31BTR, ST26C31BN, ST26C31BDR, ST26C31BD Datasheet



■ TTLINPUT COMPATIBLE

■

TYPICAL PROPAGATIONDELAY:6ns

■ TYPICALOUTPUTSKEW:0.5ns

■ OUTPUTWILLNOTLOADLINEWHEN

=0V

V

CC

■ MEETSTHEREQUIREMENTSOFEIA

STANDARDRS-422

■ OPERATIONFROMSINGLE5VSUPPLY

■ 3-STATEOUTPUTS FORCONNECTIONTO

SYSTEMBUSES

■ LOWQUIESCENTCURRENT

■

AVAILABLEIN SURFAC EMOU N T

DESCRIPTION

The ST26C31 is a quad differential line driver
designed for digital data trasmission over
balanced lines and meets all the requirements of
EIA standard RS-422 while retaining the low
powercharacteristicsof CMOS.

The ST26C31 accepts TTL or CMOS input levels

ST26C31

CMOS QUAD TRI-STATE

DIFFERENTIALLINE DRIVER

SOPDIP TSSOP

and translates these to RS-422 output levels.
This part uses special outputs circuitry common
to all four drivers. All outputs are protected
against damage due to electrostatic discharge by
diodeto V

and ground.

CC

ORDERCODES

Typ e Temp erature

Range

ST26C31BN -40 to 85
ST26C31BD -40 to 85

ST26C31BDR -40 to 85

ST26C31BTR -40 to 85

April 2000

Packag e Commen ts

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 (Tape & Reel) 2500 parts per reel

o

C TSSOP16 (Tape & Reel) 2500 parts per reel

1/8

ST26C31

PIN CONFIGURATION

PIN DESCRIPTION

PIN No SYMBOL NAM E AND FUNCTI O N

1A
2A
3A
4 EN ENABLE
5B
6B
7B
8 GND Ground

9C
10 C
11 C
12 EN ENABLE
13 D
14 D
15 D
16 V

IN
OUT
OUT

OUT
OUT

IN

IN
OUT
OUT

OUT
OUT

IN

CC

INPUT A
Channel A Output
Channel A Output

Channel B Output
Channel B Output
INPUT B

INPUT C
Channel C Output
Channel C Output

Channel D Output
Channel D Output
INPUT D
Supply Voltage

TRUTH TABLE

ENABLE ENABLE INPUT OUT PUT OUTPUT

LHXZZ

All other combinations of enable inputs L L H

HHL

L=Low VoltageState
H=HighLogicState
X=Don’t Care
Z=High Impedance

2/8

ST26C31

ABSOLUTE MAXIMUM RATINGS

(Note 1, 2)

Symb o l Para met er Val u e Unit

V

V

V

OUT

I

I

OUT

I

CC

T

Note1: AbsoluteMaximum Ratingsarethose values beyond which thesafety of thedevice cannot beguaranteed. They are not meant to imply thatthe
deviceshould be operated atthese limits.The table of electricalcharacteristics provide conditionsforactual device operation.
Note2:Unlessotherwisespecified,allvoltagearereferenced toground.Allcurrentsintothedevicepinsarepositive; allcurrents outofthedevicepinsare
negative.

Supply Voltage -0.5 to 7 V

CC

DC Input Voltage - 0.5 to (VCC+ 0.5) V

IN

DC Output Voltage (High or Low State) -0.5 to 7.0 V
Clamp Diode Current

IK

20 mA

±

DC Output Current per Pin ± 150 mA
DC VCCor GND Current
Storage Temperature Range -65 to +150

stg

150 mA

±

o

C

RECOMMENDEDOPERATINGCONDITIONS

Symbol Parameter Value Unit

Supply Voltage 4.5 to 5.5 V

CC

DC Input Voltage 0 to V

IN

DC Output Voltage (High or Low State) 0 to V

CC
CC

DC Output Voltage (VCC=0V or High Impedance) 0 to 5 V
Operating Temperature Range -40 to +85

A

Maximum Enable Input Rise or Fall Times 500 ns

V
V

o

C

V
V

V

V

t

OUT
OUT

T

r,tf

3/8

ST26C31

ELECTRICALCHARACTERISTICS

=5V±10% unlessotherwisespecified, Note 1)

(V

CC

Symbol Parameter Test Conditio ns Value Un it

Min. Typ. Max.

High Level Input Voltage 2 V

V

IH

Low Level Input Voltage 0.8 V

V

IL

V
V

V

High Level Output Voltage VIN=VIHor VIL,I

OH

Low Level Output Voltage VIN=VIHor VIL,I

OL

Differential Output Voltage RL=100Ω(Note 2) 2 3.1 V

V

T

Difference in Differential

T-VT

RL=100Ω(Note 2) 0.4 V

= -20mA 2.5 3.4 V

OUT

= +20mA 0.3 0.5 V

OUT

Output Voltage
Common Mode Output

V

OS

RL=100Ω(Note 2) 1.8 3 V

Voltage

|V

-

Difference in Common Mode

OS

V

|

Output Voltage

OS

Input Current VIN=VCC, GND, VIHor V

I

IN

Quiescent Supply Current

I

CC

(Note 2)

=100Ω(Note 2) 0.4 V

R

L

IL

I

=0µAVIN=VCCor GND 200 500

OUT

= 2.4 or 0.5V

V

IN

0.8 2 mA

±1.0 µA

µ

(Note 3)

3-STATE Output Leakage

I

OZ

Current
Output Short Circuit Current VIN=VCCor GND

I

SC

V

OUT=VCC

ENABLE = V

or GND

IL

ENABLE= V

0.5

±

IH

-30 -150 mA

5.0

±

µ

(Notes 2, 4)

Power Off Output Leakage

I

OFF

Current (Note 2)

Note1:Unlessotherwisespecified,min/maxlimitsapplyacross therecommended operatingtemperature range. AlltypicalsaregivenforVCC=5V and
T

=25oC

a

Note2:SeeEIASpecificationRS422forexact testconditions.
Note3:Measuredperpininput.Allotherinput atV
Note4: This isthe current sourced when ahigh output isshorted toground. Only oneoutput at time should be shorted.

VCC=0V V

orGND

CC

= 6 V 100 µA

OUT

= -0.25 V -100

V

OUT

µ

A

A

A

SWITCHING CHARACTERISTICS(VCC=5V±10%, tr=tf≤6ns, See Note 1)

Symbol Parameter Test Conditio ns Value Un it

Min. Typ. Max.

Propagation Delay Input to

t

PLH

Output

t

PHL

Skew (Note 2) S1 Open 0.5 2 ns

Differential Output Rise and

t

TLH

Fall Times

t

THL

Output Enable Time S1 Closed 11 19 ns

t

PZH

Output Enable Time S1 Closed 13 21 ns

t

PZL

Output Disable Time (Note 3) S1 Closed 5 9 ns

t

PHZ

Output Disable Time (Note 3) S1 Closed 7 11 ns

t

PLZ

Power Dissipation

C

PD

Capacitance (Note 4)
Input Capacitance 6 pF

C

IN

Note1:Unlessotherwisespecified.min/maxlimitsapplyacross therecommended operatingtemperature range. AlltypicalaregivenforVCC= 5V and

=25oC

T

a

Note2: Skewis defined as the differenceinpropagation delays be tween complementary outputs atthe 50% point.
Note3:Outputdisabletimeisthedelayfromthecontrolinputbeingswitched totheoutputtransistorsturningoff.Theactualdisabletimesarelessthan
indicatedduetothedelayaddedbyRCtimeconstantoftheload.
Note4:C
P

D=CPDVCC

determinestheno loaddynamicpowerconsumption, PD=CPDV

PD

f+I

CC

4/8

S1 Open 2 6 11 ns

S1 Open 6 10 ns

50 pF

2

f+ICCVCC, and theno loaddynamic currentconsumption,

CC

Plastic DIP-16 (0.25) MECHANICAL DATA

ST26C31

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

P001C

5/8

ST26C31

SO-16 MECHANICAL DATA

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

6/8

P013H

TSSOP16 MECHANICAL DATA

ST26C31

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

8

L 0.50 0.60 0.70 0.020 0.024 0.028

o

A2

A

A1

PIN 1 IDENTIFICATION

b

e

c

K

L

E

D

E1

1

7/8

ST26C31

Information furnished isbelieved to be accurate and reliable. However,STMicroelectronics assumes no responsibility for the consequences
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 thispublication are
subject tochange without notice. Thispublication supersedes and replaces all information previously supplied. STMicroelectronics products
are not authorized for use as criticalcomponents in lifesupport devices or systems withoutexpress written approval of STMicroelectronics.

The ST logo isa registeredtrademark of STMicroelectronics

 2000 STMicroelectronics – Printed in Italy – All RightsReserved

STMicroelectronics GROUP OF COMPANIES

Australia - Brazil- China - Finland - France - Germany - Hong Kong - India - Italy - Japan- Malaysia - Malta - Morocco

Singapore - Spain- Sweden - Switzerland - United Kingdom - U.S.A.

http://www.st.com

.

8/8