TEXAS INSTRUMENTS AM26LV32E-EP Technical data

1B 1A 1Y

G 2Y 2A 2B

GND

4B 4A 4Y G 3Y 3A 3B

D PACKAGE

(TOP VIEW)

AM26LV32E-EP

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............................................................................................................................................................................................ SLLS948 – NOVEMBER 2008

LOW-VOLTAGE HIGH-SPEED QUADRUPLE DIFFERENTIAL LINE RECEIVER

WITH ± 15-kV IEC ESD PROTECTION

FEATURES SUPPORTS DEFENSE, AEROSPACE,

• Meets or Exceeds Standard TIA/EIA-422-B and

ITU Recommendation V.11

• Operates From a Single 3.3-V Power Supply

• ESD Protection for RS422 Bus Pins

– ± 15-kV Human-Body Model (HBM) – ± 8-kV IEC61000-4-2, Contact Discharge – ± 15-kV IEC61000-4-2, Air-Gap Discharge

• Switching Rates up to 32 MHz

• Low Power Dissipation: 27 mW Typ

• Open-Circuit, Short-Circuit, and Terminated

Fail-Safe

• ± 7-V Common-Mode Input Voltage Range With

± 200-mV Sensitivity

• Accepts 5-V Logic Inputs With 3.3-V Supply

(Enable Inputs)

• Input Hysteresis: 35 mV Typ

• Pin-to-Pin Compatible With AM26C32,

AM26LS32

• I

Supports Partial-Power-Down Mode

off

Operation

AND MEDICAL APPLICATIONS

• Controlled Baseline

• One Assembly/Test Site

• One Fabrication Site

• Available in Military ( – 55 ° C/125 ° C)

Temperature Range

• Extended Product Life Cycle

• Extended Product-Change Notification

• Product Traceability

(1) Additional temperature ranges are available – contact factory

(1)

DESCRIPTION/ORDERING INFORMATION

The AM26LV32E consists of quadruple differential line receivers with 3-state outputs. These differential receivers have ± 15-kV ESD (HBM and IEC61000-4-2, Air-Gap Discharge) and ± 8-kV ESD (IEC61000-4-2, Contact Discharge) protection for RS422 bus pins.

This device is designed to meet TIA/EIA-422-B and ITU recommendation V.11 drivers with reduced supply voltage. The device is optimized for balanced bus transmission at switching rates up to 32 MHz. The 3-state outputs permit connection directly to a bus-organized system.

The AM26LV32E has an internal fail-safe circuitry that prevents the device from putting an unknown voltage signal at the receiver outputs. In the open fail-safe, shorted fail-safe, and terminated fail-safe, a high state is produced at the respective output.

This device is supported for partial-power-down applications using I preventing damaging current backflow through the device when it is powered down.

The AM26LV32EM is characterized for operation from – 55 ° C to 125 ° C.

PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

. I

off

circuitry disables the outputs,

off

AM26LV32E-EP

SLLS948 – NOVEMBER 2008 ............................................................................................................................................................................................

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ORDERING INFORMATION

– 55 ° C to 125 ° C SOIC – D Tape and reel AM26LV32EMDREP A26LV32EMP

(1) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging . (2) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

website at www.ti.com .

PACKAGE

(1) (2)

FUNCTION TABLE

ORDERABLE PART NUMBER TOP-SIDE MARKING

(1)

(each receiver)

DIFFERENTIAL

INPUT

VID≥ 0.2 V

– 0.2 V < VID< 0.2 V

VID≤ – 0.2 V

Open, shorted, or

terminated

X L H Z

(1) H = high level, L = low level, X = irrelevant,

Z = high impedance (off), ? = indeterminate

ENABLES

G G

H X H X L H H X ? X L ? H X L X L L H X H X L H

OUTPUT

LOGIC DIAGRAM (POSITIVE LOGIC)

Product Folder Link(s): AM26LV32E-EP

Enable

G, G

EQUIVALENT OF EACH

ENABLE INPUT (G, G)

GND

EQUIVALENT OF EACH INPUT (A, B)

TYPICAL OF EACH RECEIVER OUTPUT

Output

GND

or GND(B)

CC(A)

A, B

2.4 kΩ

1.5 kΩ

5 kΩ

200 kΩ

7 kΩ

AM26LV32E-EP

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SCHEMATIC

All resistor values are nominal.

ABSOLUTE MAXIMUM RATINGS

over operating free-air temperature range (unless otherwise noted)

V V I I l T

T T

(1) Stresses beyond those listed under " absolute maximum ratings " may cause permanent damage to the device. These are stress ratings

(2) This device is designed to meet TIA/EIA-422-B and ITU. (3) All voltage values except differential input voltage are with respect to the network GND. (4) Differential input voltage is measured at the noninverting input with respect to the corresponding inverting input. (5) Maximum power dissipation is a function of T

(6) The package thermal impedance is calculated in accordance with JESD 51-7.

Supply voltage range

Input voltage range

Differential input voltage

Output voltage range – 0.5 6 V

Input clamp current range VI< 0 – 20 mA

Output clamp current range VO< 0 – 20 mA

Maximum output current ± 20 mA

Operating virtual junction temperature 150 ° C

Package thermal impedance

Operating free-air temperature range – 55 125 ° C

Storage temperature range – 65 150 ° C

stg

only, and functional operation of the device at these or any other conditions beyond those indicated under " recommended operating conditions " is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

temperature is PD= (T

(1) (2)

(3)

A or B inputs – 14 14 V Enable Inputs – 0.5 6 V

(4)

(5) (6)

– TA)/ θJA. Selecting the maximum of 150 ° C can affect reliability.

J(max)

, θJA, and TA. The maximum allowable power dissipation at any allowable ambient

J(max)

MIN MAX UNIT

– 0.5 6 V

– 14 14 V

73 ° C/W

Product Folder Link(s): AM26LV32E-EP

AM26LV32E-EP

RECOMMENDED OPERATING CONDITIONS

MIN NOM MAX UNIT

Supply voltage 3 3.3 3.6 V Enable high-level input voltage 2 5.5 V Enable low-level input voltage 0 0.8 V Common-mode input voltage – 7 7 mA Differential input voltage – 7 7 mA High-level output current – 5 mA Low-level output current 5 mA Operating free-air temperature – 55 125 ° C

ELECTRICAL CHARACTERISTICS

over recommended ranges of common-mode input, supply voltage, and operating free-air temperature (unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP

V V

I I

I r I C

(1) All typical values are at V (2) C

Positive-going input threshold voltage,

IT+

differential input Negative-going input threshold voltage,

IT –

differential input Input hysteresis (V

hys

Input clamp voltage, G and G II= – 18 mA – 1.5 V

– V

IT+

) 35 mV

IT –

– 0.2 V

VID= 200 mV, IOH= – 5 mA 2.4 3.2

High-level output voltage V

Low-level output voltage V

High-impedance state output current VO= V

Output current with power off V

off

Line input current Other input at 0 V mA

Enable input current, G and G VI= V

Input resistance VIC= – 7 V to 7 V, Other input at 0 V 4 17 k Ω

Supply current (total package) G, G = V

Power dissipation capacitance

determines the no-load dynamic current consumption: IS= C

(2)

= 3.3 V, TA= 25 ° C.

VID= 200 mV, IOH= – 100 µ A VID= – 200 mV, IOL= 5 mA 0.17 0.5

VID= – 200 mV, IOL= 100 µ A 0.1

or GND ± 50 µ A

= 0 V, VO= 0 or 5.5 V ± 100 µ A

VI= 10 V 1.5 VI= – 10 V – 2.5

or GND ± 1 µ A

or GND, No load, Line inputs open 8 17 mA

One channel 150 pF

× V

× f + I

–

0.1

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(1)

MAX UNIT

0.2 V

Product Folder Link(s): AM26LV32E-EP

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