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ON Semiconductor NCV7341 Manual

High speed low power can transceiver
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NCV7341
High Speed Low Power CAN
Transceiver
The NCV7341 CAN transceiver is the interface between a
controller area network (CAN) protocol controller and the physical
bus and may be used in both 12 V and 24 V systems. The transceiver
provides differential transmit capability to the bus and differential
receive capability to the CAN controller.
Due to the wide common−mode voltage range of the receiver inputs,
the NCV7341 is able to reach outstanding levels of electromagnetic
susceptibility (EMS). Similarly, extremely low electromagnetic
emission (EME) is achieved by the excellent matching of the output
signals.
The NCV7341 is a new addition to the ON Semiconductor CAN
high−speed transceiver family and offers the following additional
features:
Features
•
Ideal Passive Behavior when Supply Voltage is Removed
•
Separate V
Supply for Digital Interface Allowing Communication
IO
to CAN Controllers and Microcontrollers with Different Supply
Levels
•
Fully Compatible with the ISO 11898 Standard
•
High Speed (up to 1 Mb)
•
Very Low Electromagnetic Emission (EME)
•
V
Voltage Source for Stabilizing the Recessive Bus Level if
SPLIT
Split Termination is Used (Further Improvement of EME)
•
Differential Receiver with High Common−Mode Range for
Electromagnetic Immunity (EMI)
•
Up to 110 Nodes can be Connected in Function of the Bus Topology
•
Transmit Data (TxD) Dominant Time−out Function
•
Bus Error Detection with Version NCV7341D20
•
Bus Pins Protected Against Transients in Automotive Environments
•
Bus Pins and Pin V
SPLIT
•
Thermally Protected
•
NCV Prefix for Automotive and Other Applications Requiring Site
and Change Controls
•
These are Pb−Free Devices*
Typical Applications
•
Automotive
•
Industrial Networks
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2009
May, 2009 − Rev. 4
Short−Circuit Proof to Battery and Ground
TxD
1
GND
2
V
CC
3
RxD
4
V
IO
5
6
EN
INH
7
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 17 of this data sheet.
1
http://onsemi.com
PIN ASSIGNMENT
14
CANH
13
12
CANL
V
11
10
VBAT
9
WAKE
8
(Top View)
PC20060727.1
Publication Order Number:
NCV7341/D
STB
SPLIT
ERR

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Summary of Contents for ON Semiconductor NCV7341

  • Page 1 NCV7341 is able to reach outstanding levels of electromagnetic susceptibility (EMS). Similarly, extremely low electromagnetic emission (EME) is achieved by the excellent matching of the output signals. The NCV7341 is a new addition to the ON Semiconductor CAN CANH high−speed transceiver family and offers the following additional features:...

  • Page 2: Table Of Contents

    NCV7341 Table 1. TECHNICAL CHARACTERISTICS Symbol Parameter Condition Unit Supply Voltage for the Core Circuitry 4.75 5.25 Supply Voltage for the Digital Interface 5.25 DC Voltage at Pin EN −0.3 + 0.3 DC Voltage at Pin STB −0.3 + 0.3 DC Voltage at Pin TxD −0.3...
  • Page 3 NCV7341 BLOCK DIAGRAM VBAT CANH Timer Thermal shutdown V SPLIT VSPLIT ”Active” Driver CANL control Level Digital shifter Control Wake − up Block Filter Ï Ï Ï Ï Low Power Ï Ï Ï Ï VCC/2 Clock Ï Ï ”Active” −...
  • Page 4 NCV7341 TYPICAL APPLICATION SCHEMATICS 5V−Reg VBAT 1 kW x mF* 100nF 180 kW 10 nF VBAT WAKE 2.7 kW 10 nF CANH controller = 60 W SPLIT C LT = 4.7 nF ERR 8 CANL = 60 W Note (*): Value depending on regulator PC20060921.4...

  • Page 5: Vcc Supply Voltage For The Core Circuitry

    NCV7341 PIN DESCRIPTION CANH CANL SPLIT VBAT WAKE PC20060727.1 Figure 4. NCV7340 Pin Assignment Table 2. PIN DESCRIPTION Name Description Transmit data input; low level = dominant on the bus; internal pull−up current Ground Supply voltage for the core circuitry and the transceiver Receive data output;...
  • Page 6 NCV7341 FUNCTIONAL DESCRIPTION OPERATING MODES Operation modes of NCV7341 are shown in Figures 5 and in Table 3. SLEEP MODE STB = H and EN = L STB = H and EN = H undervoltage flag reset undervoltage flag reset...
  • Page 7 NCV7341 Table 3. OPERATION MODES Conditions Transceiver Behavior VBAT Undervoltage Undervoltage Power−up or Wakeup Flag Flag Flag Pin STB Pin EN Operating Mode Pin INH Sleep Floating Reset Standby High Reset If in sleep, then no change Floating otherwise stand−by...
  • Page 8 NCV7341 Table 4. INTERNAL FLAGS AND THEIR VISIBILITY Internal Flag Set Condition Reset Condition Visibility on Pin ERR Undervoltage < V longer than t At wake−up or power−up CC(SLEEP) UV(VCC) or V < V longer than t IO(SLEEP) UV(VIO) Undervoltage <...
  • Page 9 NCV7341 transmissions, an internal bus failure flag is set and made A local wake−up is detected after a change of state (High immediately visible through a Low level on the ERR pin. to Low, or Low to High) on WAKE Pin which is stable for...

  • Page 10: Viov

    NCV7341 ELECTRICAL CHARACTERISTICS Definitions Absolute Maximum Ratings All voltages are referenced to GND (Pin 2). Positive Stresses above those listed in the following table may currents flow into the IC. Sinking current means the current cause permanent device failure. Exposure to absolute is flowing into the pin;...
  • Page 11 NCV7341 Operating Conditions Operating conditions define the limits for functional operation, parametric characteristics and reliability specification of the device. Functionality of the device is not guaranteed outside the operating conditions. Table 6. OPERATING RANGES Symbol Parameter Conditions Unit Supply Voltage...

  • Page 12: Viov

    NCV7341 Characteristics The characteristics of the device are valid for operating conditions defined in Table 7 and the bus lines are considered to be loaded with R = 60 W, unless specified otherwise. Table 8. DC CHARACTERISTICS Symbol Parameter Conditions...

  • Page 13: Viov

    NCV7341 Table 8. DC CHARACTERISTICS Symbol Parameter Conditions Unit TRANSMITTER DATA INPUT (PIN TxD) Low−Level Input Current = 0.3 V −70 −250 −500 Input Capacitance Not Tested STANDBY AND ENABLE INPUTS (PINS STB AND EN) High−Level Input Voltage 0.7V −...
  • Page 14 NCV7341 Table 8. DC CHARACTERISTICS Symbol Parameter Conditions Unit BUS LINES (PINS CANH AND CANL) Short−Circuit Output Current = 42 V; V = 0 V o(sc) (CANL) CANL at Pin CANL Differential Receiver Threshold −12 V < V < +12 V...
  • Page 15 NCV7341 Table 9. AC CHARACTERISTICS Symbol Parameter Conditions Unit TIMING CHARACTERISTICS (Figure 6) Delay TxD to Bus Active Setup According to Figure 8 d(TxD−BUSon) Delay TxD to Bus Inactive Setup According to Figure 8 d(TxD−BUSoff) Delay Bus Active to RxD Setup According to Figure 8 d(BUSon−RxD)
  • Page 16 NCV7341 High Hysteresis PC20040829.7 i(dif)(hys) Figure 7. Hysteresis of the Receiver 47 mF 1 kW 100 nF +12V 10 nF VBAT WAKE CANH Generator SPLIT 100 pF 60 W CANL 15 pF PC20060921.6 Figure 8. Test Circuit for Timing Characteristics...
  • Page 17 NCV7341 DEVICE ORDERING INFORMATION † Part Number Description Temperature Range Package Type Shipping NCV7341D20G HS CAN Transceiver −40°C − 125°C SOIC−14 55 Tube / Tray with bus error detection (Pb−Free) NCV7341D20R2G −40°C − 125°C SOIC−14 3000 / Tape & Reel (Pb−Free)
  • Page 18 PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: N. American Technical Support: 800−282−9855 Toll Free ON Semiconductor Website: www.onsemi.com Literature Distribution Center for ON Semiconductor USA/Canada Order Literature: http://www.onsemi.com/orderlit P.O. Box 5163, Denver, Colorado 80217 USA Europe, Middle East and Africa Technical Support: Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada...