NSC DS26LV32ATMX, DS26LV32ATM Datasheet

DS26LV32AT
3V Enhanced CMOS Quad Differential Line Receiver

General Description

The DS26LV32Ais a high speed quad differential CMOS re­ceiver that meets the requirements of both TIA/EIA-422-B
and ITU-T V.11. The CMOS DS26LV32AT features typical
low static I

CC

of 9 mA which makes it ideal for battery pow-

ered and power conscious applications. The TRI-STATE

®

enables, EN and EN*, allow the device to be active High or
active Low. The enables are common to all four receivers.

The receiver output (RO) is guaranteed to be High when the
inputs are left open. The receiver can detect signals as low
as

±

200 mV over the common mode range of±10V.The re­ceiver outputs (RO) are compatible with TTL and LVCMOS
levels.

Features

n Low Power CMOS design (30 mW typical)
n Interoperable with existing 5V RS-422 networks
n Industrial and Military Temperature Range
n Conforms to TIA/EIA-422-B (RS-422) and ITU-T V.11

Recommendation

n 3.3V Operation

n

±

7V Common Mode Range@VID=3V

n

±

10V Common Mode Range@VID= 0.2V

n Receiver OPEN input failsafe feature
n Guaranteed AC Parameter:

Maximum Receiver Skew: 4 ns
Maximum Transition Time: 10 ns

n Pin compatible with DS26C32AT
n 32 MHz Toggle Frequency

n

>

6.5k ESD Tolerance (HBM)

n Available in SOIC and Cerpack Packaging
n Standard Microcircuit Drawing (SMD) 5962-98585

Connection Diagram Truth Table

Enables Inputs Output

EN EN* RI+–RI− RO

LH X Z

All Other V

ID

≥ +0.2V H

Combinations of V

ID

≤ −0.2V L

Enable Inputs Open

†

H

†

Open, not terminated
L = Logic Low
H = Logic High
X = Irrelevant
Z = TRI-STATE

TRI-STATE®is a registered trademark of National Semiconductor Corporation.

Dual-In-Line Package

DS012908-1

Top View

Order Number DS26LV32ATM or DS26LV32AW

See NS Package Number M16A or W16A

April 1999

DS26LV32AT 3V Enhanced CMOS Quad Differential Line Receiver

© 1999 National Semiconductor Corporation DS012908 www.national.com

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.

Supply Voltage (V

CC

) −0.5V to +7V

Enable Input Voltage (EN, EN*) −0.5V to V

CC

+0.5V

Receiver Input Voltage (V

ID

: RI+, RI−)

±

14V

Receiver Input Voltage

(VCM: RI+, RI−)

±

14V

Receiver Output Voltage (RO) −0.5V to V

CC

+0.5V

Receiver Output Current (RO)

±

25 mA Maximum

Maximum Package Power Dissipation

@

+25˚C
M Package 1190 mW
W Package 1087 mW

Derate M Package 9.8 mW/˚C above +25˚C
Derate W Package 7.3 mW/˚C above +25˚C

Storage Temperature Range −65˚C to +150˚C
Lead Temperature Range Soldering

(4 Sec.) +260˚C

ESD Ratings (HBM, 1.5 kΩ, 100 pF)

Receiver Inputs and Enables ≥ 6.5 kV
Other Pins ≥ 2kV

Recommended Operating
Conditions

Min Typ Max Units

Supply Voltage (V

CC

) 3.0 3.3 3.6 V

Operating Free Air Temperature Range (T

A

)
DS26LV32AT −40 +25 +85 ˚C
DS26LV32AW −55 +25 +125 ˚C

Electrical Characteristics (Notes 2, 3)

Over Supply Voltage and Operating Temperature ranges, unless otherwise specified.

Symbol Parameter Conditions Pin Min Typ Max Units

V

TH

Differential Input Threshold V

OUT=VOH

or

V

OL

VCM= −7V to
+7V, T

A

=

-40˚C to +85˚C
RI+,

RI−

−200

±

17.5 +200 mV

V

CM

= −0.5V to

+5.5V, T

A

=

-55˚C to +125˚C

(Note 9)

-200 +200 mV

V

HY

Hysteresis VCM= 1.5V 35 mV

V

IH

Minimum High Level

EN,

EN*

2.0 V

Input Voltage

V

IL

Maximum Low Level 0.8 V
Input Voltage

R

IN

Input Resistance VIN= −7V, +7V, TA= -40˚C to

+85˚C (Other Input = GND)

RI+,

RI−

5.0 8.5 kΩ

V

IN

= −0.5V, +5.5V, TA= -55˚C to

+125˚C (Other Input = GND) (Note

9)

5.0 kΩ

I

IN

Input Current VIN= +10V TA= -40˚C to

+85˚C

0 1.1 1.8 mA

(Other Input = 0V, V

IN

= +3V 0 0.27 mA

Power On, or V

IN

= 0.5V −0.02 mA

V

CC

= 0V) VIN= −3V 0 −0.43 mA

V

IN

= −10V 0 −1.26 −2.2 mA

V

IN

= −0.5V TA= -55˚C to

+125˚C (Note

9)

0 -1.8 mA

V

IN

= 5.5V 0 1.8 mA

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Electrical Characteristics (Notes 2, 3) (Continued)

Over Supply Voltage and Operating Temperature ranges, unless otherwise specified.

Symbol Parameter Conditions Pin Min Typ Max Units

I

EN

Input Current VIN=0VtoV

CC

EN,
EN*

±

1µA

V

OH

High Level Output Voltage IOH= −6 mA, VID= +1V

RO

2.4 3 V

I

OH

= −6 mA, VID= OPEN

V

OH

High Level Output Voltage IOH= −100 µA, VID= +1V VCC−0.1 V

I

OH

= − 100 µA, VID= OPEN

V

OL

Low Level Output Voltage IOL= +6 mA, VID= −1V 0.13 0.5 V

I

OZ

Output TRI-STATE Leakage V

OUT=VCC

or GND

±

50 µA

Current EN = V

IL

,EN*=V

IH

I

SC

Output Short Circuit Current VO= 0V, VID≥ |200 mV| (Note 4) −10 −35 −70 mA

I

CC

Power Supply Current No Load, All

RI+, R1− =
OPEN, EN,
EN*=V

CC

or

GND

T

A

= -40˚C to

+85˚C

V

CC

915mA

T

A

= -55˚C to

+125˚C

20 mA

Switching Characteristics - Industrial (Notes 3, 7, 10, 11)

Over Supply Voltage and -40˚C to +85˚C Operating Temperature range, unless otherwise specified.

Symbol Parameter Conditions Min Typ Max Units

t

PHL

Propagation Delay CL= 15 pF, VCM= 1.5V

(

Figures 1, 2

)

6 17.5 35 ns

High to Low

t

PLH

Propagation Delay 6 17.8 35 ns
Low to High

t

r

Rise Time (20%to 80%) 4.1 10 ns

t

f

Fall Time (80%to 20%) 3.3 10 ns

t

PHZ

Disable Time CL= 50 pF, VCM= 1.5V

(

Figures 3, 4

)

40 ns

t

PLZ

Disable Time 40 ns

t

PZH

Enable Time 40 ns

t

PZL

Enable Time 40 ns

t

SK1

Skew, |t

PHL−tPLH

| (Note 5) CL= 15 pF, VCM= 1.5V 0.3 4 ns

t

SK2

Skew, Pin to Pin (Note 6) 0.6 4 ns

t

SK3

Skew, Part to Part (Note 7) 7 17 ns

f

MAX

Maximum Operating
Frequency (Note 8)

CL= 15 pF, VCM= 1.5V 32 MHz

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