DS26LS33ACN [NSC]

Quad Differential Line Receivers; 四路差动线路接收器


型号：	DS26LS33ACN
厂家：	National Semiconductor
描述：	Quad Differential Line Receivers 四路差动线路接收器接口集成电路光电二极管
文件：	总8页 (文件大小：205K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

May 1999

DS26LS32AC/DS26LS32C/DS26LS32M/DS26LS33M

Quad Differential Line Receivers

General Description

Features

n High differential or common-mode input voltage ranges

The DS26LS32 and DS26LS32A are quad differential line re-

ceivers designed to meet the RS-422, RS-423 and Federal

Standards 1020 and 1030 for balanced and unbalanced digi-

tal data transmission.

of 7V on the DS26LS32 and DS26LS32A and 15V

on the DS26LS33

0.2V sensitivity over the input voltage range on the

DS26LS32 and DS26LS32A, 0.5V sensitivity on the

DS26LS33

The DS26LS32 and DS26LS32A have an input sensitivity of

200 mV over the input voltage range of 7V and the

n DS26LS32 and DS26LS32A meet all requirements of

RS-422 and RS-423

DS26LS33 have an input sensitivity of 500 mV over the input

voltage range of 15V.

n 6k minimum input impedance

The DS26LS32A differ in function from the popular

DS26LS32 and DS26LS33 in that input pull-up and

pull-down resistors are included which prevent output oscil-

lation on unused channels.

n 100 mV input hysteresis on the DS26LS32 and

DS26LS32A, 200 mV on the DS26LS33

n Operation from a single 5V supply

n TRI-STATE outputs, with choice of complementary

output enables for receiving directly onto a data bus

Each version provides an enable and disable function com-

mon to all four receivers and features TRI-STATE outputs

with 8 mA sink capability. Constructed using low power

Schottky processing, these devices are available over the

full military and commerical operating temperature ranges.

Logic Diagram

DS005255-1

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

DS005255

www.national.com

Connection Diagram

Dual-In-Line Package

DS005255-2

Top View

Order Number DS26LS32CM, DS26LS32CN,

DS26LS32ACM, DS26LS32ACN, DS26LS33ACM

or DS26LS33ACN

See NS Package Number M16A or N16E

For Complete Military Product Specifications,

refer to the appropriate SMD or MDS.

Order Number DS26LS32MJ/883, DS26LS32MW/883,

DS26LS32ME/883, DS26LS33MW/883

See NS Package Number E20A, J16A or W16A

20-Lead Ceramic Leadless Chip Carrier

DS005255-12

Truth Table

ENABLE

Input

Output

Hi-Z

See

V_ID≥ V_TH(Max)

V_ID≤ V_TH(Min)

Note Below

Hi-Z = TRI-STATE^®

Note: Input conditions may be any combination not defined for ENABLE and ENABLE .

www.national.com

Absolute Maximum Ratings (Note 3)

Operating Conditions

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Min

4.5

Max

5.5

Units

Supply Voltage, (V_CC

)

DS26LS32M, DS26LS33M

(MIL)

Supply Voltage

Common-Mode Range

Differential Input Voltage

Enable Voltage

25V

DS26LS32C

4.75

5.25

DS26LS32AC

(COML)

Output Sink Current

50 mA

Temperature, (T_A)

DS26LS32M, DS26LS33M

(MIL)

Maximum Power Dissipation (Note 1) at 25˚C

Cavity Package

−55

+125

+70

˚C

1433 mW

1362 mW

1002 mW

1051 mW

Molded Dip Package

SO Package DS26LS32

DS26LS32A

DS26LS32C

DS26LS32AC

(COML)

Storage Temperature Range

−65˚C to

+165˚C

Note 1: Derate cavity package 9.6 mW/˚C above 25˚C; derate molded DIP

package 10.9 mW/˚C above 25˚C.

Note 2: Derate SO Package 8.01 mW/˚C for DS26LS32

Lead Temperature (Soldering, 4 seconds)

260˚C

8.41 mW/˚C for DS26LS32A

Electrical Characteristics (Notes 4, 5, 6)

over the operating temperature range unless otherwise specified

Symbol

Parameter

Differential Input

Voltage

Conditions

Min

−0.2

−0.5

6.0

Typ

Max

0.2

Units

V_TH

V_OUTV_OH

DS26LS32, DS26LS32A, −7V ≤ V_CM≤ +7V

DS26LS33, DS26LS33A, −15V ≤ V_CM+15V

0.07

0.14

8.5

or V_OL

0.5

R_IN

I_IN

Input Resistance

Input Current (Under

Test)

−15V ≤ V_CM≤ +15V (One Input AC GND)

kΩ

15V, Other Input −15V ≤ V_IN≤ +15V

−15V, Other Input −15V ≤ V_IN≤ +15V

2.3

−2.8

V_OH

Output High Voltage

V_CCMIN, ∆V_IN1V,

Commercial

Military

2.7

2.5

4.2

V_ENABLE0.8V, I_OH−440 µA

V_OL

Output Low Voltage

V_CCMin, ∆V_IN−1V,

I_OL4 mA

0.4

0.45

0.8

V_ENABLE0.8V

I_OL8 mA

V_IL

V_IH

V_I

Enable Low Voltage

Enable High Voltage

Enable Clamp

Voltage

2.0

V_CCMin, I_IN−18 mA

−1.5

I_O

OFF-State (High

Impedance) Output

Current

Max

V_O2.4V

µA

V_O0.4V

−20

I_IL

Enable Low Current

Enable High Current

Output Short-Circuit

Current

V_IN0.4V

−0.36

µA

V_IN2.7V

I_IH

I_SC

0V, V_CCMax, ∆V_IN1V

−15

−85

I_CC

Power Supply

V_CCMax, All V_INGND,

DS26LS32, DS26LS32A

DS26LS33, DS26LS33A

µA

Current

Outputs Disabled

I_I

Input High Current

Input Hysteresis

V_IN5.5V

100

V_HYST

T_A25˚C, V_CC5V,

DS26LS32, DS26S32A

DS26LS33, DS26LS33A

100

200

V_CM0V

Note 3: “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the device

should be operated at these limits. The table of “Electrical Characteristics” provides conditions for actual device operation.

Note 4: All currents into device pins are shown as positive, all currents out of device pins are shown as negative, all voltages are referenced to ground, unless oth-

erwise specified. All values shown as max or min are so classified on absolute value basis.

Note 5: All typical values are V

5V, T

25˚C.

Note 6: Only one output at a time should be shorted.

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Switching Characteristics

V_CC5V, T_A25˚C

Symbol

Parameter

Conditions

DS26LS32/DS26LS33

DS26LS32A/DS26LS33A

Units

Min

Typ

Max

Min

Typ

Max

t_PLH

t_PHL

t_LZ

Input to Output

C_L15 pF

ENABLE to Output

C_L5 pF

t_HZ

t_ZL

C_L15 pF

t_ZH

AC Test Circuit and Switching Time Waveforms

Load Test Circuit for TRI-STATE^®Outputs

DS005255-3

Propagation Delay (Notes 7, 9)

Enable and Disable Times (Notes 8, 9)

DS005255-4

DS005255-5

Note 7: Diagram shown for ENABLE low.

Note 8: S1 and S2 of load circuit are closed except where shown.

50Ω; t ≤ 6 ns; t ≤ 6.0 ns.

Note 9: Pulse generator for all pulses: Rate 1.0 MHz; Z

Typical Applications

Two-Wire Balanced Interface — RS-422

DS005255-6

www.national.com

Typical Applications (Continued)

Single Wire with Driver Ground Reference — RS-423

DS005255-7

www.national.com

Physical Dimensions inches (millimeters) unless otherwise noted

Ceramic Dual-In-Line Package (J)

Order Number DS26LS32MJ/883 or DS26LS33MJ/883

NS Package Number J16A

Small Outline Package (M)

Order Number DS26LS32CM or DS26LS32ACM

NS Package Number M16A

www.national.com

Physical Dimensions inches (millimeters) unless otherwise noted (Continued)

Molded Dual-In-Line Package (N)

Order Number DS26LS32CN or DS26LS32ACN

NS Package Number N16E

16 Lead Ceramic Flatpak (W)

Order Number DS26LS32MW/883 or DS26LS33MW/883

NS Package Number W16A

www.national.com

Physical Dimensions inches (millimeters) unless otherwise noted (Continued)

20 Lead Ceramic Leadless Chip Carrier (E)

Order Number DS26LS32ME/883

NS Package Number E20A

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NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT

DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL

COUNSEL 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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Tel: 1-800-272-9959

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