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SN55ALS194, SN75ALS194

QUADRUPLE DIFFERENTIAL LINE DRIVERS

SLLS009D – OCTOBER 1985 – REVISED MAY 1995

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

Meet or Exceed the Requirements of ANSI

Standard EIA/TIA-422-B and ITU

Recommendation V.11

Designed to Operate Up to 20 Mbaud

3-State TTL-Compatible Outputs

Single 5-V Supply Operation

High Output Impedance in Power-Off

Condition

Two Pairs of Drivers, Independently

Enabled

Designed as Improved Replacements for

the MC3487

description

These four differential line drivers are designed

for data transmission over twisted-pair or

parallel-wire transmission lines. They meet the

requirements of ANSI Standard EIA/TIA-422-B

and ITU Recommendation V.11 and are

compatible with 3-state TTL circuits. Advanced

low-power Schottky technology provides high

speed without the usual power penalty. Standby

supply current is typically only 26 mA. Typical

propagation delay time is less than 10 ns, and

enable/disable times are typically less than

16 ns.

High-impedance inputs keep input currents low:

less than 1 µA for a high level and less than

100 µA for a low level. The driver circuits can be

enabled in pairs by separate active-high enable

inputs. The SN55ALS194 and SN75ALS194 are

capable of data rates in excess of 20 megabits

per second and are designed to operate with the

SN55ALS195 and SN75ALS195 quadruple line

receivers.

The SN55ALS194 is characterized for operation over the full military temperature range of –55°C to 125°C. The

SN75ALS194 is characterized for operation from 0°C to 70°C.

FUNCTION TABLE

(each driver)

INPUTS

OUTPUT

OUTPUTS

A EN

Y Z

H H H L

L H L H

X L Z Z

H = high level, L = low level, X = irrelevant,

Z = high impedance

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of 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.

1, 2EN

GND

3, 4EN

SN55ALS194 ...J OR W PACKAGE

SN75ALS194 ...D OR N PACKAGE

(TOP VIEW)

3 2 1 20 19

910111213

3, 4EN

1, 2EN

SN55ALS194 ...FK PACKAGE

(TOP VIEW)

GND

NC – No internal connection

Summary of content (22 pages)

PAGE 1
SN55ALS194, SN75ALS194 QUADRUPLE DIFFERENTIAL LINE DRIVERS SLLS009D – OCTOBER 1985 – REVISED MAY 1995 D D D D D D D SN55ALS194 . . . J OR W PACKAGE SN75ALS194 . . . D OR N PACKAGE (TOP VIEW) Meet or Exceed the Requirements of ANSI Standard EIA/TIA-422-B and ITU Recommendation V.
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SN55ALS194, SN75ALS194 QUADRUPLE DIFFERENTIAL LINE DRIVERS SLLS009D – OCTOBER 1985 – REVISED MAY 1995 logic symbol† 1, 2EN 4 logic diagram (positive logic) 4 EN 1, 2EN 2 1A 1 3 6 2A 7 5 1Y 2 1A 1Z 12 6 2Z 9 11 14 4A 7 5 1Y 1Z 2Y 2Z EN 10 3A 3 2Y 2A 3, 4EN 1 15 13 3, 4EN 12 3Y 3Z 10 3A 4Y 9 11 3Y 3Z 4Z 14 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown are for the D, J, N, and W packages.
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SN55ALS194, SN75ALS194 QUADRUPLE DIFFERENTIAL LINE DRIVERS SLLS009D – OCTOBER 1985 – REVISED MAY 1995 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) † Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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SN55ALS194, SN75ALS194 QUADRUPLE DIFFERENTIAL LINE DRIVERS SLLS009D – OCTOBER 1985 – REVISED MAY 1995 electrical characteristics over recommended ranges of supply voltage and operating free-air temperature range (unless otherwise noted) TEST CONDITIONS† PARAMETER VIK Input clamp voltage VCC = MIN, VOH High level output voltage High-level VCC = MIN,, IOH = –20 mA VOL VO Low-level output voltage Output voltage VCC = MIN, IO = 0 |VOD1| Differential output voltage IO = 0 |VOD2| Differential outpu
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SN55ALS194, SN75ALS194 QUADRUPLE DIFFERENTIAL LINE DRIVERS SLLS009D – OCTOBER 1985 – REVISED MAY 1995 SYMBOL EQUIVALENTS DATA SHEET PARAMETER EIA/TIA-422-B VO | VOD1 | Voa, Vob Vo | VOD2 | ∆ | VOD | Vt (RL = 100 Ω) | |Vt| – |Vt| | VOC ∆ | VOC | | Vos | | Vos – Vos | IOS IO |Isa|, |Isb| |Ixa| , |Ixb| RL 2 VOD2 RL 2 VOC Figure 1. Driver VOD and VOC PARAMETER MEASUREMENT INFORMATION 3V Input 5V S1 Generator (see Note A) 200 Ω 1.5 V 1.5 V 0V tPHL tPLH Y Output 1.5 V VOH 1.
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SN55ALS194, SN75ALS194 QUADRUPLE DIFFERENTIAL LINE DRIVERS SLLS009D – OCTOBER 1985 – REVISED MAY 1995 PARAMETER MEASUREMENT INFORMATION 5V Output S3 200 Ω S1 0 V or 3 V Generator (see Note A) 1 kΩ CL = 15 pF (see Note B) See Note C 50 Ω S2 TEST CIRCUIT Output Enable Input 3V 1.5 V 0V tPHZ Output S1 Closed S2 Closed VOH 0.5 V ≈ 1.5 V tPLZ Output S1 Closed S2 Closed 1.5 V ≈ 1.5 V 0.5 V VOL Output Enable Input 0V 3V 1.5 V tPZL Output S1 Closed S2 Open 1.
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SN55ALS194, SN75ALS194 QUADRUPLE DIFFERENTIAL LINE DRIVERS SLLS009D – OCTOBER 1985 – REVISED MAY 1995 TYPICAL CHARACTERISTICS† Y OUTPUT VOLTAGE vs DATA INPUT VOLTAGE Y OUTPUT VOLTAGE vs DATA INPUT VOLTAGE 5 4.5 VCC = 5 V Outputs Enabled No Load 4.5 4 VCC = 5.5 V 3.5 VO – Y Output Voltage – V VO – Y Output Voltage – V 5 No Load Outputs Enabled TA = 25°C VCC = 5 V VCC = 4.5 V 3 2.5 2 1.5 4 TA = 125°C 3.5 3 TA = 25°C 2.5 TA = 0°C TA = 70°C 2 TA = – 55°C 1.5 1 1 0.5 0.5 0 0 0 0.5 1 1.
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SN55ALS194, SN75ALS194 QUADRUPLE DIFFERENTIAL LINE DRIVERS SLLS009D – OCTOBER 1985 – REVISED MAY 1995 TYPICAL CHARACTERISTICS† Z OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE 6 VCC = 5 V VCC = 5 V RL = 470 Ω to VCC See Note B 5 VCC = 4.5 V VO – Z Output Voltage – V VO – Z Output Voltage – V 6 RL = 470 Ω to VCC TA = 25°C See Note A VCC = 5.5 V 5 Z OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE 4 3 2 1 4 TA = 125°C TA = 70°C 3 TA = 25°C TA = 0°C 2 TA = – 55°C 1 0 0 0.5 1 1.5 2 2.5 0 3 0 0.
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SN55ALS194, SN75ALS194 QUADRUPLE DIFFERENTIAL LINE DRIVERS SLLS009D – OCTOBER 1985 – REVISED MAY 1995 TYPICAL CHARACTERISTICS† LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT LOW-LEVEL OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE 0.45 1 VCC = 5 V IOL= – 20 mA See Note A VOL – Low-Level Output Voltage – V VOL – Low-Level Output Voltage – V 0.5 0.4 0.35 0.3 0.25 0.2 0.15 0.1 TA = 25°C See Note A 0.9 VCC = 4.5 V 0.8 0.7 VCC = 5 V 0.6 0.5 0.4 VCC = 5.5 V 0.3 0.2 0.1 0.
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SN55ALS194, SN75ALS194 QUADRUPLE DIFFERENTIAL LINE DRIVERS SLLS009D – OCTOBER 1985 – REVISED MAY 1995 TYPICAL CHARACTERISTICS SUPPLY CURRENT vs FREQUENCY 60 VCC = 5 V Input = 0 to 3 V Duty Cycle = 50% CL = 30 pF to All Outputs I CC – Supply Current – mA 50 40 30 20 10 0 10 k 100 k 1M 10 M f – Frequency – Hz Figure 17 10 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 100 M
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 18-Sep-2008 reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 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 SN75ALS194DR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1 SN75ALS194NSR SO NS 16 2000 330.0 16.4 8.2 10.5 2.5 12.0 16.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN75ALS194DR SN75ALS194NSR SOIC D 16 2500 333.2 345.9 28.6 SO NS 16 2000 367.0 367.0 38.
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