DS8922AM datasheet(3/14 Pages) NSC

Part #	DS8922AM

Description	TRI-STATE RS-422 Dual Differential Line Driver and Receiver Pairs

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Manufacturer	NSC [National Semiconductor (TI)]

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Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Supply Voltage

7V

Drive Input Voltage

−0.5V to +7V

Output Voltage

5.5V

Receiver Output Sink Current

50 mA

Receiver Input Voltage

±10V

Differential Input Voltage

±12V

Maximum Package Power Dissipation @ +25˚C

M Package

1300 mW

N Package

1450 mW

Derate M Package 10.4 mW/˚C above +25˚C

Derate N Package 11.6 mW/˚C above +25˚C

Storage Temperature Range

−65˚C to +165˚C

Lead Temp. (Soldering, 4 seconds)

260˚C

Recommended Operating

Conditions

Min

Max

Units

Supply Voltage

4.5

5.5

V

Temperature (T

A)

0

70

˚C

DS8922/22A and DS8923A Electrical Characteristics(Notes 2, 3, 4)

Symbol

Conditions

Min

Typ

Max

Units

RECEIVER

V

TH

−7V

≤ V

CM ≤ +7V

−200

±35

+200

mV

V

HYST

−7V

≤ V

CM ≤ +7V

15

70

mV

R

IN

V

IN = −7V, +7V (Other Input = GND)

4.0

6.0

k

Ω

I

IN

V

IN = 10V

3.25

mA

V

IN = −10V

−3.25

mA

V

OH

V

CC = MIN, IOH = − 400 µA

2.5

V

OL

V

CC = MAX, IOL = 8 mA

0.5

V

I

SC

V

CC = MAX, VOUT = 0V

−15

−100

mA

DRIVER

V

OH

V

CC = MIN, IOH = −20 mA

2.5

V

OL

V

CC = MIN, IOL = +20 mA

0.5

V

I

OFF

V

CC = 0V, VOUT = 5.5V

100

µA

|VT|–| VT |

0.4

V

VT

2.0

V

|V

OS–VOS |

0.4

V

I

SC

V

CC = MAX, VOUT = 0V

−30

−150

mA

DRIVER and RECEIVER

I

OZ

V

OUT = 2.5V

50

µA

TRI-STATE

V

CC = MAX

V

OUT = 0.4V

−50

µA

Leakage

I

CC

V

CC = MAX

ACTIVE

76

mA

TRI-STATE

78

mA

DRIVER and ENABLE INPUTS

V

IH

2.0

V

IL

0.8

V

I

IL

V

CC = MAX, VIN = 0.4V

−40

−200

µA

I

IH

V

CC = MAX, VIN = 2.7V

20

µA

I

V

CC = MAX, VIN = 7.0V

100

µA

V

CL

V

CC = MIN, IIN = −18 mA

−1.5

V

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