NCV7441 D

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NCV7441 D | Manualzz

NCV7441

Dual High Speed Low

Power CAN Transceiver

The NCV7441, dual CAN transceiver offers two fully independent high−speed CAN transceivers which can be individually connected to two CAN protocol controllers. The CAN channels can be separately put to normal or to standby mode, in which remote wakeup detection from the bus is possible.

Due to the shared auxiliary circuitry and common package, this circuit version can replace two standard high−speed CAN transceivers while saving board space.

Features

Compatible with the ISO 11898 Standard (ISO 11898−2, ISO

11898−5 and SAE J2284)

Low Quiescent Current

High Speed (up to 1 Mbps)

Ideally Suited for 12 V and 24 V Industrial and Automotive

Applications

Extremely Low Current Standby Mode with Wakeup Via the Bus

Low EME without Common−mode Choke

No Disturbance of the Bus Lines with an Un−powered Node

Predictable Behavior Under All Supply Circumstances

Transmit Data (TxD) Dominant Time−out Function

Thermal Protection

Bus Pins Protected Against Transients in an Automotive

Environment

Power Down Mode in Which the Transmitter is Disabled

Bus and V

SPLIT

Pins Short Circuit Proof to Supply Voltage and

Ground

Input Logic Levels Compatible with 3.3 V Devices

Up to 110 Nodes can be Connected to the Same Bus in Function of

Topology

Pb−Free Packages are Available

Typical Applications

Automotive

Industrial Networks

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MARKING

DIAGRAM

14

1

SOIC−14 NB

CASE 751A

14

NCV7441−0

AWLYWWG

1

XXXXX = Specific Device Code

A

WL

Y

WW

G

= Assembly Location

= Wafer Lot

= Year

= Work Week

= Pb−Free Package

TxD1

1

PIN CONNECTIONS

14

STB1

RxD1

2 13

CANH1

GND

3

VCC

4

GND 5

RxD2 6

TxD2 7

12

CANL1

11

TEST/GND

10

CANH2

9

CANL2

8

STB2

ORDERING INFORMATION

See detailed ordering and shipping information in the

package dimensions section on page 9 of this data sheet.

© Semiconductor Components Industries, LLC, 2011

August, 2011 − Rev. 0

1

Publication Order Number:

NCV7441/D

CANH1

CANL1

Transmitter

Receiver

Low−power receiver

V

CC

V

CC

NCV7441

BLOCK DIAGRAM

NCV7441

Dual CAN

SUPPLY

MONITOR

THERMAL

MONITOR

Transmitter

V

CC

CANH2

CANL2

Receiver

V

CC

Low −power receiver

V

CC

PD20100615.01

Figure 1. NCV7441 Dual CAN: Block Diagram

13

14

11

12

9

10

7

8

Table 1. PIN FUNCTION DESCRIPTION

Pin

Number

1

2

Pin

Name

TxD1

RxD1

Pin Type

digital input; internal pull−up digital output

3

4

5

6

GND

V

CC

GND

RxD2 ground supply input ground digital output

TxD2

STB2

CANL2

CANH2

TEST /

GND

CANL1

CANH1

STB1 digital input; internal pull−up digital input; internal pull−up high−voltage analog input/output high−voltage analog input/output test/ground high−voltage analog input/output high−voltage analog input/output digital input; internal pull−up

Description

transmit data for the 1 st mode

CAN channel in normal mode; ignored in standby received data from the 1 st

CAN channel in normal mode; 1 st

CAN channel remote wakeup indication in standby mode ground connection

5 V supply connection ground connection received data from the 2 nd indication in standby mode

CAN channel; 2 nd

CAN channel remote wakeup transmit data for the 2 nd

CAN channel mode control input for the 2 nd channel into standby mode

CAN channel; STB2 = High puts the 2 nd

CAN

CANL−wire connection of the 2 nd

CAN channel

CANH−wire connection of the 2 nd

CAN channel

The pin is used for test purposes during device production. It’s recommended to connect to ground in the end−application.

CANL−wire connection of the 1 st

CAN channel

CANH−wire connection of the 1 st

CAN channel mode control input for the 1 st

STB1 = High puts the 1 st

CAN channel;

CAN channel into standby mode

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2

NCV7441

TYPICAL APPLICATION DIAGRAM

VBAT

LDO

5V

GND

MCU + CAN ctrl.

1

MCU + CAN ctrl.

2

STB1

TxD1

RxD1

V

CC

STB2

TxD2

RxD2

TEST/

GND

NCV7441−0

Dual CAN

GND

CANH1

CANL1

CANH2

CANL2

PD20100615.03

Figure 2. NCV7441 Dual CAN: Example Application Diagram

FUNCTIONAL DESCRIPTION

Dual CAN device behaves identically to two independent CAN transceivers. The representative signal dependencies are

shown in Figure 4 and further functional description is given in Table 2.

Table 2. FUNCTIONAL DESCRIPTION

V

CC

< V

CC_UV

STB1/2 TxD1/2

X X

RxD1/2

HZ

> V

CC_UV

High X Low−power receiver output

Low High Indicates the signal received on CAN1/2

Low Low

Transceiver on CANH1/2/CANL1/2

Deactivated; unbiased

Transmitter deactivated;

Bus biased to GND through the input circuitry;

Receiver monitoring CAN1/2 wakeup

Recessive signal transmitted on CAN1/2;

Bus biased to V

CC

/2 through the input circuitry

Dominant signal transmitted on CAN1/2;

Bus biased to V

CC

/2 through the input circuitry

Comment

The entire chip in under−voltage

CAN1/2 in standby mode

CAN1/2 in normal mode

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3

NCV7441

If the main power supply V

CC

(nominal 5 V) is above its under−voltage (V

CC_UV

) level, each CAN channel can enter either normal mode (when the corresponding STB1/2 digital input is pulled Low) or standby mode (when the corresponding STB1/2 signal is left High):

In the normal mode:

The bus transceiver is ready to transmit and receive CAN bus signals with the full CAN communication speed (up to

1 Mbps) and thus interconnect the CAN bus with the corresponding CAN controller through digital pins TxD1/2 and

RxD1/2

The bus pins are internally biased to typically V

CC

/2 through the input circuitry

TxD1/2 input pin is monitored by a timeout in order to prevent a permanent dominant being forced to the bus thus preventing other nodes from communicating. If TxD1/2 is Low for longer than t cnt(timeout)

, the transmitter switches back to recessive. Only when TxD1/2 returns to High, the timeout counter is reset and the transmitter is ready to transmit dominant symbols again. The TxD1/2 timeout protection is implemented individually for both CAN transceivers.

A common thermal monitoring circuit compares the circuit junction temperatures with threshold T

J(sd)

. If the thermal shutdown level is exceeded, dominant transmission is disabled. The circuit remains biased and ready to transmit but the logical path from TxD1/2 pin(s) is blocked. The transmission is again enabled when the junction temperature decreases below the shutdown level and the TxD1/2 pin returns to the High level, thus avoiding thermal oscillations.

In the standby mode:

The respective transmitter is disabled and the current consumption of the channel is fundamentally reduced. Only the low−power receiver on the channel remains active in order to detect potential CAN bus wakeups. The logical signal

♦ on TxD1/2 input is ignored.

The bus pins are biased to GND through the input circuitry

Digital output RxD1/2 signals the output of the low−power receiver and can be used as a wakeup signal in the application. A filtering time td

BUS

is applied between the bus activity and the RxD1/2 signal in order to ensure that only sufficiently long dominant signals on the bus will be propagated to the digital output. In addition, dominant bus signals are ignored in case they were present during normal−to−standby mode transition; in this way unwanted wakeups are avoided in case of permanent dominant failure on the bus. Example waveforms illustrating bus activity

detection in standby mode are shown in Figure 3.

In order to ensure a safe device state, the digital inputs STB1/2 and TxD1/2 are connected through internal pull−up resistors to V

CC

thus ensuring that both channels remain in standby mode and/or no dominant can be transmitted in case any of the digital inputs gets disconnected.

STB1

< t dbus w t dbus w t dbus

< t dbus

CANH/L1

RxD1

STB2

CANH/L2

RxD2

PD20100209.08

Figure 3. NCV7441 Dual CAN: Bus Activity Detection in Standby Mode

< t dbus w t dbus

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4

NCV7441

Figure 4. NCV7441 Dual CAN: Functional Graphs http://onsemi.com

5

NCV7441

Table 3. ABSOLUTE MAXIMUM RATINGS

Symbol

V max_VCC

V max_digIn

V max_digOut

Parameter

Supply voltage

Voltage at digital inputs. TxD1, TxD2, STB1, STB2

Voltage at digital outputs. RxD1, RxD2, TEST/GND

Min

−0.3

−0.3

−0.3

Max

6

6

(V

CC

+ 0.3)

Unit

V

V

V

V

V

V max_CANH1/2 max_CANL1/2 max_diffCAN

T

J(max)

ESD

Voltage on CANH1/2 pin; no time limit

Voltage on CANL1/2 pin ; no time limit

Absolute voltage difference between CAN pins: |V

(CANH1)

|V

(CANH2)

−V

(CANL2)

|

−V

(CANL1)

|;

Junction temperature

System ESD on CANH1/2 and CANL1/2 as per IEC 61000−4−2: 330 W / 150 pF

Human body model on CANH1/2 and CANL1/2 as per JESD22−A114 / AEC−

Q100−002

−50

−50

0

−40

−8

−8

+50

+50

50

170

8

8

V

V

V

°C kV kV

Human body model on other pins as per JESD22−A114 / AEC−Q100−002 −4 4 kV

Charge device model on all pins as per JESD22−C101 / AEC−Q100−011 −500 500 V

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the

Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.

Table 4. OPERATING RANGES

Symbol

V op_VCC

V op_digIn

V op_digOut

V op_CANH1/2

V op_CANL1/2

V op_diffCAN

T

J_op

Parameter

Supply voltage

Voltage at digital inputs. Dual CAN: TxD1, TxD2, STB1, STB2

Voltage at digital outputs. RxD1, RxD2

Voltage on CANH1/2 pin

Guaranteed receiver function

Voltage on CANL1/2 pin

Guaranteed receiver function

Absolute voltage difference between CAN pins:

|V

(CANH1)

− V

(CANL1)

|; |V

(CANH2)

− V

(CANL2)

|

Guaranteed receiver function

Junction temperature

Min

4.75

0

0

−35

35

0

−40

Max

5.25

V

CC

V

CC

35

35

35

150

Unit

V

V

V

V

V

V

°C

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NCV7441

Table 5. ELECTRICAL CHARACTERISTICS

The characteristics defined in this section are guaranteed within the operating ranges listed in Figure 4, unless stated otherwise. Positive

currents flow into the respective pin.

Conditions Min Typ Max Unit Symbol Parameter

V

CC

SUPPLY ELECTRICAL CHARACTERISTICS

V

CC_UV

I

VCC_stdby

V

CC

under voltage level

V

CC

consumption

2.5

3.5

20

4.5

30

V mA

I

VCC_norm1

Both channels in standby mode; no wakeup detected; both buses recessive

TxD1 = TxD2 = High

One channel in normal mode;

TxD1 = TxD2 = High

3 5 11 mA

I

VCC_norm2

Both channels in normal mode;

TxD1 = TxD2 = High

DIGITAL INPUTS ELECTRICAL CHARACTERISTICS – PINS TxD1, TxD2

V

TxX_L

V

TxX_H

Low level input voltage

High level input voltage

6

−0.3

2

−75

10

−200

20

0.8

V

CC

0.3

+

−350 mA

V

V mA I

I

TxX_L

TxX_H

Low level input current

High level input current

V

CC

V

(TxX)

= 5 V

= GND

V

CC

V

= 0 ... 5.25 V

(TxX)

= 5 V

DIGITAL INPUTS ELECTRICAL CHARACTERISTICS – PINS STB1, STB2

V

STBX_L

V

STBX_H

Low level input voltage

High level input voltage

−0.5

−0.3

2

−1 −4

0.5

0.8

V

CC

0.3

+

−10 mA

V

V mA I

I

STBX_L

STBX_H

Low level input current

High level input current

V

CC

V

(STBX)

= 5 V

= GND

V

CC

= 0 ... 5.25 V

V

(STBX)

= 5 V

DIGITAL OUTPUTS ELECTRICAL CHARACTERISTICS – PINS RxD1, RxD2

I digOut_L

V

(digOut)

= 0.4 V

I digOut_H

Output current at Low output level

Output current at High output level

V

I digOut_stdby digOut_HZ

Output level in standby mode

Output current in High−impedance state at least one channel enabled

V

(digOut)

= V

CC

− 0.4 V both channels in standby;

I

(digOut)

= −100 mA during V

V

CC

undervoltage;

(digOut)

= 0 V ... V

CC

CAN TRANSMITTER CHARACTERISTICS

V o(reces)(CANH1/2) recessive bus voltage at pin CANH1/2

V

TxD1/2

= V

CC

; no load on the bus, normal mode no load on the bus; standby mode

V o(reces)(CANL1/2) recessive bus voltage at pin CANL1/2

V

TxD1/2

= V

CC

; no load on the bus, normal mode no load on the bus; standby mode

I

I o(reces)(CANH1/2) o(reces)(CANL1/2) recessive output current at pin CANH1/2 recessive output current at pin CANL1/2

−35 V < V

CANH1/2

0 V < V

CC

< 35 V;

< 5.25 V

−35 V < V

CANL1/2

0 V < V

CC

< 35 V;

< 5.25 V

−0.5

2

−0.1

V

CC

1.1

−2

2.0

−0.1

2.0

−0.1

−2.5

−2.5

6

−0.4

V

CC

0.7

0

2.5

0

2.5

0

0.5

12

−1

V

CC

0.4

2

3.0

0.1

3.0

0.1

2.5

2.5

mA mA mA

V mA

V

V mA mA

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NCV7441

Table 5. ELECTRICAL CHARACTERISTICS

The characteristics defined in this section are guaranteed within the operating ranges listed in Figure 4, unless stated otherwise. Positive

currents flow into the respective pin.

Min Typ Max Unit Symbol Parameter

CAN TRANSMITTER CHARACTERISTICS

V o(dom)(CANH1/2)

V o(dom)(CANL1/2) dominant output voltage at pin CANH1/2 dominant output voltage at pin CANL1/2

V

V

Conditions

TXD1/2

TXD1/2

= 0 V

= 0 V

V

V o(dif)(BUS_dom) o(dif)(BUS_rec) differential bus output voltage

(V

CANH1/2

– V

CANL1/2

) differential bus output voltage

(V

CANH1/2

– V

CANL1/2

)

V

TXD1/2

= 0 V, dominant; bus differential load:

42.5 W < R

L

< 60 W

V

TXD1/2

= V

CC

Recessive, no load on the bus

I

I o(SC)(CANH1/2) o(SC)(CANL1/2) short−circuit output current at pin CANH1/2 short−circuit output current at pin CANL1/2

V

CANH1/2

V

TXD1/2

= 0 V,

= 0 V

V

CANL1/2

V

TXD1/2

= 36 V,

= 0 V

CAN RECEIVER AND CAN PINS ELECTRICAL CHARACTERISTICS

V

R

V

V i(dif)(th) ihcm(dif)(th) ihcm(dif)(hys) i(cm)CANH1/2

Differential receiver threshold voltage

Differential receiver threshold voltage for high common mode

Differential receiver input voltage hysteresis for high common mode

Common mode input resistance at pin CANH1/2 normal mode

−12 V < V

CANH1/2

< 12 V

−12 V < V

CANL1/2

< 12 V standby mode

−12 V < V

CANH1/2

< 12 V

−12 V < V

CANL1/2

< 12 V normal mode

−35 V < V

CANH1/2

< 35 V

−35 V < V

CANL1/2

< 35 V normal mode

−35 V < V

CANH1/2

< 35 V

−35 V < V

CANL1/2

< 35 V

3.0

0.5

1.5

−120

−100

45

0.5

0.4

0.4

20

15

3.6

1.4

2.25

0

−70

70

0.7

0.8

0.7

70

26

4.25

1.75

3.0

50

−45

100

0.9

1.15

1

100

37

V

V

V mV mA mA

V

V mV kW

R i(cm)CANL1/2

C

C

R i(cm)(m)

R i(dif)

I(CANH1/2)

I(CANL1/2)

Common mode input resistance at pin CANL1/2

Matching between pin

CANH1/2 and pin

CANL1/2 common mode input resistance

Differential input resistance input capacitance at pin

CANH1/2 input capacitance at pin

CANL1/2

V

CANH1/2

= V

CANL1/2

V

TxD1/2

= V

CC not tested in production

V

TxD1/2

= V

CC not tested in production

C

I(dif) differential input capacitance

I

LICANH1/2

Input leakage current to pin CANH1/2

V

V

CANL1/2

CC

= V

= 0 V;

CANH1/2

= 5 V

I

LICANL1/2

Input leakage current to pin CANL1/2

V

V

CANL1/2

CC

= V

= 0 V;

CANH1/2

= 5 V

THERMAL MONITORING ELECTRICAL CHARACTERISTICS

T

J(sd)

Thermal shutdown threshold

V

TxD1/2

= V

CC not tested in production

Junction temperature rising

Junction temperature falling

15

−3

25

−10

−10

150

145

26

0

50

7.5

7.5

3.75

0

0

37

3

75

20

20

10

10

10

185 kW

% kW pF pF pF mA mA

°C

°C

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NCV7441

Table 5. ELECTRICAL CHARACTERISTICS

The characteristics defined in this section are guaranteed within the operating ranges listed in Figure 4, unless stated otherwise. Positive

currents flow into the respective pin.

Conditions Min Typ Max Unit Symbol Parameter

DYNAMIC ELECTRICAL CHARACTERISTICS

td

(TXD1/2−BUSOn) td

(TXD1/2−BUSOff) delay TxD1/2 to CAN1/2 bus active delay TxD1/2 to CAN1/2 bus inactive td

(BUSOn−RXD1/2) td td td

(BUSOff−RX0)

PD(TXD1/2−RXD1/2)dr

PD(TXD1/2−RXD1/2)rd td

BUS delay CAN1/2 bus active to RxD1/2 delay CAN1/2 bus inactive to RxD1/2 propagation delay TxD1/2 to RxD1/2; dominant−to−recessive propagation delay TxD1/2 to RxD1/2; recessive−to−dominant low−power receiver filtering time bus differential load 100 pF/60 W bus differential load 100 pF/60 W

C

RxD1/2

= 15 pF

C

RxD1/2

= 15 pF bus differential load 100 pF/60 W bus differential load 100 pF/60 W

20

25

30

30

75

0.5

85

30

55

100

2.5

120

105

105

105

245

230

5 ns ns ns ns ns ns ms td

WAKE

V standby mode dif(dom)

> 1.4 V

V standby mode dif(dom)

> 1.2 V standby mode; dominant longer than td

BUS

0.5

3 5.8

10 ms td

(nrm−stb) td

(stb−nrm) t cnt(timeout)

I digOut_HZ delay to flag bus wakeup; time from CAN bus dominant start to RxDx falling edge transition delay from

STB1/2 rising edge to

CAN1/2 standby mode transition delay from

STB1/2 falling edge to

CAN1/2 normal mode

TxD1/2 dominant time out

Output current in High−impedance state

V

TXD1/2

= 0 V pins RxD1,2 during V

V

(digOut)

CC

under−voltage;

= 0 V ... V

CC

300

−2

650

0

10

10

1000

2 ms ms ms mA

ORDERING INFORMATION

Device Description Temperature Range Package Shipping

NCV7441D20G

Dual HS−CAN Transceiver

*40°C to 125°C

SOIC−14

(Pb−Free)

55 Tube / Tray

NCV7441D20R2G 3000 / Tape & Reel

†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.

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9

14

H

1

0.25

M

B

M

e

D

NCV7441

PACKAGE DIMENSIONS

SOIC−14 NB

CASE 751A−03

ISSUE K

8

A

B

E

7

13X b

0.25

M C A S B S

A

DETAIL A

L h

X 45

_

A1

C

SEATING

PLANE

M

SOLDERING FOOTPRINT*

6.50

A3

DETAIL A

NOTES:

1. DIMENSIONING AND TOLERANCING PER

ASME Y14.5M, 1994.

2. CONTROLLING DIMENSION: MILLIMETERS.

3. DIMENSION b DOES NOT INCLUDE DAMBAR

PROTRUSION. ALLOWABLE PROTRUSION

SHALL BE 0.13 TOTAL IN EXCESS OF AT

MAXIMUM MATERIAL CONDITION.

4. DIMENSIONS D AND E DO NOT INCLUDE

MOLD PROTRUSIONS.

5. MAXIMUM MOLD PROTRUSION 0.15 PER

SIDE.

MILLIMETERS

DIM MIN

A

1.35

A1

0.10

MAX

INCHES

MIN MAX

1.75

0.054

0.068

0.25

0.004

0.010

h

L

M

A3

0.19

b

0.35

D

E

8.55

3.80

e

H

0.25

0.008

0.010

0.49

0.014

0.019

8.75

0.337

0.344

4.00

0.150

0.157

1.27 BSC

5.80

0.25

0.40

0

_

6.20

0.228

0.244

0.50

0.010

0.019

1.25

7

_

0.050 BSC

0.016

0

_

0.049

7

_

14X

1.18

1

1.27

PITCH

14X

0.58

DIMENSIONS: MILLIMETERS

*For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and

Mounting Techniques Reference Manual, SOLDERRM/D.

ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.

“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should

Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal

Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.

PUBLICATION ORDERING INFORMATION

LITERATURE FULFILLMENT:

Literature Distribution Center for ON Semiconductor

P.O. Box 5163, Denver, Colorado 80217 USA

Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada

Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada

Email: [email protected]

N. American Technical Support: 800−282−9855 Toll Free

USA/Canada

Europe, Middle East and Africa Technical Support:

Phone: 421 33 790 2910

Japan Customer Focus Center

Phone: 81−3−5773−3850

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ON Semiconductor Website: www.onsemi.com

Order Literature: http://www.onsemi.com/orderlit

For additional information, please contact your local

Sales Representative

NCV7441/D

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