DS75114 [NSC]

Dual Differential Line Drivers; 双路差分线路驱动器


型号：	DS75114
厂家：	National Semiconductor
描述：	Dual Differential Line Drivers 双路差分线路驱动器驱动器
文件：	总6页 (文件大小：137K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

February 1996

DS75114 Dual Differential Line Drivers

General Description

Features

Each circuit offers a choice of open-collector or active

pull-up (totem-pole) outputs

Single 5V supply

The DS75114 dual differential line driver is designed to pro-

vide differential output signals with high current capability

for driving balanced lines, such as twisted pair at normal line

impedances, without high power dissipation. The output

stages are similar to TTL totem-pole outputs, but with the

sink outputs, YS and ZS, and the corresponding active pull-

up terminals, YP and ZP, available on adjacent package

pins. Since the output stages provide TTL compatible output

levels, these devices may also be used as TTL expanders

or phase splitters.

Differential line operation

Dual channels

TTL/LS compatibility

Designed to be interchangeable with Fairchild 9614 line

drivers

Short-circuit protection of outputs

High current outputs

Clamp diodes at inputs and outputs to terminate line

transients

Single-ended or differential AND/NAND outputs

Triple inputs

Connection Diagram

Dual-In-Line Package

TL/F/5786–1

Top View

Positive logic: Y

ABC

Order Number DS75114N

See NS Package Number N16A

Truth Table

Inputs

Outputs

All Other Input Combinations

high level

low level

1996 National Semiconductor Corporation

TL/F/5786

RRD-B30M36/Printed in U. S. A.

http://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.

Lead Temperature ((/16 from case

for 4 seconds): N Package

260 C

*Derate cavity package 9.6 mW/ C above 25 C; derate molded package

10.9 mW/ C above 25 C (Note 2).

Supply Voltage (V

Input Voltage

5.5V

Operating Conditions

OFF-State Voltage Applied to

Open-Collector Outputs

Min

Max

Units

12V

Supply Voltage (V

DS75114

)

Maximum Power Dissipation* at 25 C

4.75

5.25

Cavity Package

1433 mW

1362 mW

High Level Output Current (I

)

Molded Package

Low Level Output Current (I

Operating Free-Air

)

Operating Free-Air Temperature Range

DS55114

55 C to 125 C

Temperature (T )

0 C to 70 C

DS75114

65 C to 150 C

Storage Temperature Range

Lead Temperature ((/16 from case

for 60 seconds): J Package

300 C

Electrical Characteristics Over recommended operating free-air temperature range (unless otherwise noted)

DS75114

Symbol

Parameter

Conditions (Note 3)

Typ

Units

Min

Max

(Note 4)

High Level Input Voltage

Low Level Input Voltage

Input Clamp Voltage

0.8

e b

Min, I

1.5

12 mA

0.9

e b

High Level Output Voltage

Min, V

10 mA

40 mA

2.4

3.4

0.8V

3.0

0.2

6.1

2V, V 0.8V,

Low Level Output Voltage

Output Clamp Voltage

Min, V

0.45

6.5

40 mA

40 mA, T 25 C

5V, I

e b

1.5

Max, I

40 mA, T

25 C

1.1

OFF-State Open-Collector

Output Current

O(off)

12V

125 C

Max

25 C

100

200

5.25V

70 C

Input Current at Maximum

Input Voltage

Max, V

5.5V

High Level Input Current

Low Level Input Current

Max, V

2.4V

0.4V

1.6

1.1

Short-Circuit Output

Current (Note 5)

120

Supply Current

(Both Drivers)

Inputs Grounded, No Load,

Max

25 C

Note 1: All voltage values are with respect to network ground terminal.

Note 2: For operation above 25 C free-air temperature, refer to Dissipation Derating Curves in the Thermal information section.

Note 3: All parameters, with the exception of OFF-state open-collector output current, are measured with the active pull-up connected to the sink output.

5V, with the exception of I

Note 4: All typical values are at T

25 C and V

at 7V.

Note 5: Only one output should be shorted at a time, and duration of the short-circuit should not exceed one second.

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25 C

Switching Characteristics V

5V, T

DS75114

Typ

Symbol

Parameter

Conditions

Units

Min

Max

Propagation Delay Time,

Low-to-High-Level Output

30 pF,(Figure 1)

PLH

PHL

Propagation Delay Time

High-to-Low-Level Output

AC Test Circuit and Switching Time Waveforms

TL/F/5786–3

Note 1: The pulse generator has the following characteristics: Z

500 kHz.

50X,

OUT

100 ns, PRR

Note 2: C includes probe and jig-capacitance.

TL/F/5786–4

FIGURE 1. (Notes 1, 2)

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Typical Performance Characteristics*

Output Voltage vs Data

Input Voltage

Output Voltage vs Data

Input Voltage

High Level Output Voltage

vs Output Current

TL/F/5786–5

Low Level Output Voltage

vs Output Current

Output Voltage vs Free-Air

Temperature

Propagation Delay Times vs

Free-Air Temperature

TL/F/5786–6

Supply Current (Both Drivers)

vs Supply Voltage

Supply Current (Both Drivers)

vs Free-Air Temperature

Supply Current (Both Drivers)

vs Frequency

TL/F/5786–7

*Data for temperatures below 0 C and above 70 C and for supply voltages below 4.75V and above 5.25V are applicable to DS55114 circuits only. These

parameters were measured with the active pull-up connected to the sink output.

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Schematic Diagram (Each Driver)

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Physical Dimensions inches (millimeters)

Molded Dual-In-Line Package (N)

Order Number DS75114N

NS Package Number N16A

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DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL

SEMICONDUCTOR CORPORATION. As used herein:

1. Life support devices or systems are devices or

systems which, (a) are intended for surgical implant

into the body, or (b) support or sustain life, and whose

failure to perform, when properly used in accordance

with instructions for use provided in the labeling, can

be reasonably expected to result in a significant injury

to the user.

2. A critical component is any component of a life

support device or system whose failure to perform can

be reasonably expected to cause the failure of the life

support device or system, or to affect its safety or

effectiveness.

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Corporation

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Europe

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