Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsInterface ICsInterface IC - drivers RS422 4/0 PDIP 16



   

SLLS098C − MAY 1980 − REVISED FEBRUARY 2004

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D Meets or Exceeds Requirements of ANSI

TIA/EIA-422-B and ITU

Recommendation V.11

D 3-State, TTL-Compatible Outputs

D Fast Transition Times

D High-Impedance Inputs

D Single 5-V Supply

D Power-Up and Power-Down Protection

description/ordering information

The MC3487 offers four independent differential line drivers designed to meet the specifications of ANSI

TIA/EIA-422-B and ITU Recommendation V.11. Each driver has a TTL-compatible input buffered to reduce

current and minimize loading.

The driver outputs utilize 3-state circuitry to provide high-impedance states at any pair of differential outputs

when the appropriate output enable is at a low logic level. Internal circuitry is provided to ensure the

high-impedance state at the differential outputs during power-up and power-down transition times, provided the

output enable is low.

The MC3487 is designed for optimum performance when used with the MC3486 quadruple line receiver. It is

supplied in a 16-pin dual-in-line package and operates from a single 5-V supply.

ORDERING INFORMATION

PACKAGE

†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

PDIP − N Tube MC3487N MC3487N

0°C to 70°C

SOIC − D

Tube MC3487D

MC3487

C to 70

SOIC − D

Tape and reel MC3487DR

MC3487

SOP − NS Tape and reel MC3487NSR MC3487

†

Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines

are available at www.ti.com/sc/package.

FUNCTION TABLE

(each driver)

INPUT

OUTPUT

OUTPUTS

INPUT

OUTPUT

ENABLE

Y Z

H H H L

L H L H

X L Z Z

H = TTL high level, L = TTL low level,

X = irrelevant, Z = High impedance

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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.

1,2EN

GND

3,4EN

D, N, OR NS PACKAGE

(TOP VIEW)

Summary of content (16 pages)

PAGE 1
SLLS098C − MAY 1980 − REVISED FEBRUARY 2004 D Meets or Exceeds Requirements of ANSI D D D D D D, N, OR NS PACKAGE (TOP VIEW) TIA/EIA-422-B and ITU Recommendation V.
PAGE 2
SLLS098C − MAY 1980 − REVISED FEBRUARY 2004 logic diagram (positive logic) 1, 2EN 1A 2A 3, 4EN 3A 4A 4 1 7 2 3 6 5 1Y 1Z 2Y 2Z 12 9 15 10 11 14 13 3Y 3Z 4Y 4Z schematics of inputs and outputs EQUIVALENT OF EACH INPUT VCC TYPICAL OF ALL OUTPUTS VCC Input 9 Ω NOM Output 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PAGE 3
SLLS098C − MAY 1980 − REVISED FEBRUARY 2004 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 V Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.
PAGE 4
SLLS098C − MAY 1980 − REVISED FEBRUARY 2004 electrical characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) PARAMETER TEST CONDITIONS VIK VOH Input clamp voltage VOL |VOD| Low-level output voltage Differential output voltage VIL = 0.
PAGE 5
SLLS098C − MAY 1980 − REVISED FEBRUARY 2004 PARAMETER MEASUREMENT INFORMATION 50 Ω VOD 50 Ω VOC Figure 1. Differential and Common-Mode Output Voltages 3V Input 5V SW1 Generator (see Note A) 200 Ω 1.5 V 1.5 V tPHL tPLH VOH 1.5 V Y Output 1.5 V Skew 50 Ω tPHL CL = 15 pF (see Note B) 3V See Note C 0V Skew tPLH 1.5 V Z Output ÏÏÏ ÏÏÏ VOL VOH 1.5 V VOL VOLTAGE WAVEFORMS TEST CIRCUIT NOTES: A.
PAGE 6
SLLS098C − MAY 1980 − REVISED FEBRUARY 2004 PARAMETER MEASUREMENT INFORMATION 5V Output SW3 200 Ω SW1 0 V or 3 V Generator (see Note A) CL = 15 pF (see Note B) 1 kΩ See Note C 50 Ω SW2 TEST CIRCUIT Output Enable Input Output Enable Input 3V 1.5 V tPHZ 0V tPZL 0V VOH SW1 Closed SW2 Closed ≈1.5 V ≈1.5 V SW1 Closed 0.5 V SW2 Closed VOL 3V 1.5 V 0.5 V Output tPLZ Output 1.5 V Output VOL tPZH Output SW1 Closed SW2 Open 1.
PAGE 7
PACKAGE OPTION ADDENDUM www.ti.
PAGE 8
PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.
PAGE 9
PACKAGE MATERIALS INFORMATION www.ti.com 8-Apr-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant MC3487DR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1 MC3487DR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.
PAGE 10
PACKAGE MATERIALS INFORMATION www.ti.com 8-Apr-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) MC3487DR SOIC D 16 2500 333.2 345.9 28.6 MC3487DR SOIC D 16 2500 367.0 367.0 38.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.