NM485SLC Murata Power Solutions Inc, NM485SLC Datasheet

NM485SLC

Manufacturer Part Number

NM485SLC

Description

ISOLATED INTERFACE LP EIA-485

Manufacturer

Murata Power Solutions Inc

Datasheet

1.NM485SLC.pdf (6 pages)

Specifications of NM485SLC

Data Rate

1.25Mbps

Inputs - Side 1/side 2

RS-485

Number Of Channels

Isolation Rating

1000Vrms

Voltage - Supply

4.75 V ~ 5.25 V

Propagation Delay

72ns

Output Type

Tri-State

Package / Case

24-DIP (0.667", 16.95mm)

Operating Temperature

0°C ~ 60°C

Operating Supply Voltage

5 V

Supply Current

1 mA

Operating Temperature Range

0 C to + 70 C

Input Voltage

5 V

Maximum Power Dissipation

1000 mW

Propagation Delay Time Ns

150 ns

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Lead Free Status / RoHS Status

Lead free / RoHS Compliant, Lead free / RoHS Compliant

Other names

811-1446-5

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

NM485SLC

Manufacturer:

Murata

Quantity:

3 000

Current page: 1 of 6
Download datasheet (169Kb)

FEATURES

DESCRIPTION

The NM485SLC is a low power electrically iso-

lated differential driver and receiver designed for

bi-directional data communication or multipoint

bus transmission at rates up to 2.5Mbits per

second. The device combines a tri-state dif-

ferential line driver and a differential input line

receiver. The driver and receiver have active high

and active low enables, respectively, which can

be connected together to function as direction

control. The receiver features a high output state

when the inputs are left open. Thermal shutdown

protection forces the driver into a high imped-

ance state, under line fault conditions. No external

components are needed as a single 5V supply

powers all functions either side of the isolation

boundary. The device is supplied in a low proﬁle

24 pin plastic package.

www.murata-ps.com

RoHS compliant

Site compatible with NM485D

Single 5V supply

Thermal shutdown protection

EIA-485 and CCITT V.10 & V.11 compatible

Differential driver and receiver

Driver tri-state outputs active high enable

Low Proﬁle 24 pin DIL package style

1kVrms Isolation

Thermal shutdown protection

www.murata-ps.com/rohs

For full details go to

All data taken at T

ELECTRICAL CHARACTERISTICS

Parameter

Supply voltage, V

Isolated reference voltage, V

High level input voltage, V

Low level input voltage, V

Common mode output voltage, V

High level output current I

Low level output current, I

Common mode input voltage, V

Differential input voltage, V

High level output current, I

Low level output current, I

RECEIVER ELECTRICAL CHARACTERISTICS

Parameter

High threshold differential input, V

Low threshold differential input, V

Input hysteresis, ΔV

High level output voltage, V

Low level output voltage, V

Line input current, I

Short circuit output current, I

Input resistance, R

RECEIVER SWITCHING CHARACTERISTICS

Parameter

Propagation delay time L to H, T

Propagation delay time H to L, T

Output disable time from high level

Output disable time from low level

Output enable time to high level

Output enable time to low level

RECEIVER FUNCTION TABLE

ISOLATION CHARACTERISTICS

Parameter

Isolation test voltage

Isolation capacitance

ABSOLUTE MAXIMUM RATINGS

Supply voltage V

Input voltage D ENABLE, R ENABLE and D

Receiver differential input voltage range

Output voltage range, driver

Power dissipation

Data transmission rate

Lead temperature 1.5mm from case for 10 seconds

REF

Current

Differential inputs A-B

-0.2V<V

Irrelevant

=25°C, V

≤-0.2V

≥0.2V

with respect to pin 11

<+0.2V

=5V.

REF

PLH

PHL

Test conditions

D ENABLE, R ENABLE and D

Driver

Receiver

Test conditions

Other input at 0V, V

Test conditions

Conditions

Flash tested for 1 second

Low Power Isolated EIA-485 Driver and Receiver

=54Ω

=2.7V, I

=0.5V, I

=15pF

=200mV, I

=-200mV, I

=-1.5V to 1.5V, C

Technical enquiries - email: mk@murata-ps.com, tel:

=-0.4mA

=16mA

R ENABLE

High level

Low level

=-5.0mA

=25mA

=12V

=-7.0V

=15pF

1000

Min.

4.75

Min.

-7.0

-0.2

2.8

2.7

KII_NM485SLC.A02 Page 1 of 6

NM485SLC

Typ.

150

130

5.0

-14V to +14V

1000mW

2.5Mbps

Undeﬁned

High level

Low level

300ºC

OUT

+44 (0)1908 615232

Max.

5.25

±12

-5.0

-0.8

180

150

-60

5.0

0.8

0.2

0.8

1.0

Units

Vrms

KΩ

Related parts for NM485SLC

NM485SLC Summary of contents

Page 1

... Low Proﬁle 24 pin DIL package style 1kVrms Isolation Thermal shutdown protection DESCRIPTION The NM485SLC is a low power electrically iso- lated differential driver and receiver designed for bi-directional data communication or multipoint bus transmission at rates up to 2.5Mbits per second. The device combines a tri-state dif- ferential line driver and a differential input line receiver ...

Page 2

... Min. Typ. Max 120 60 120 80 150 80 150 150 300 80 120 80 120 D Output Z Low level High level High impedance Min. Typ. Max -40 125 Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232 KII_NM485SLC.A02 Page Units μA μ Units Units ºC ºC ...

Page 3

... The thermal shutdown circuit disables the driver output when the internal temperature of the I.C. reaches 150ºC and turns it back on when the temperature cools to 130ºC. If two or more NM485SLCs are used and drivers are shorted directly, the driver outputs can not supply enough current to activate the thermal shutdown ...

Page 4

... A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?” For a part holding no speciﬁc agency approvals, such as the NM485SLC series, both input and output should normally be maintained within SELV limits i.e. less than 42.4V peak, or 60VDC. The isolation test voltage represents a measure of immunity to transient voltages and the part should never be used as an element of a safety isolation system. The part could be expected to function correctly with several hundred volts offset applied continuously across the isolation barrier ...

Page 5

... Low Power Isolated EIA-485 Driver and Receiver 0.012 (0.30) 0.008 (0.20) 0.6673 (16.95) MAX RECOMMENDED FOOTPRINT All dimensions are in inches ±0.01 (mm ±0.25) TUBE OUTLINE DIMENSIONS All dimensions are in inches ±0.01 (mm ±0.25) Technical enquiries - email: mk@murata-ps.com, tel: NM485SLC Tube Quantity : 15 +44 (0)1908 615232 KII_NM485SLC.A02 Page ...

Page 6

... ISO 9001 REGISTERED Osaka, Tel: 6-6354-2025, email: sales_osaka@murata-ps.com Website: www.murata-ps.jp China: Shanghai, Tel: +86 215 027 3678, email: shanghai@murata-ps.com Guangzhou, Tel: +86 208 221 8066, email: guangzhou@murata-ps.com © 2008 Murata Power Solutions, Inc. Technical enquiries - email: mk@murata-ps.com, tel: NM485SLC +44 (0)1908 615232 KII_NM485SLC.A02 Page ...

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