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Data Sheet

Rev. 1.0, 2012-03-14

TLE7250GVIO

High Speed CAN Transceiver

Summary of content (23 pages)

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TLE7250GVIO High Speed CAN Transceiver Data Sheet Rev. 1.
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TLE7250GVIO Table of Contents 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 3.1 3.2 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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High Speed CAN Transceiver 1 TLE7250GVIO Overview Features • • • • • • • • • • • • • • Fully compliant with ISO 11898-2 Wide common mode range for electromagnetic immunity (EMI) Very low electromagnetic emission (EME) Excellent ESD immunity Suitable for 5V and 3.
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TLE7250GVIO Block Diagram 2 Block Diagram 3 Transmitter CANH CANL 5 7 6 Driver Output Stage VCC VIO 1 TxD TempProtection Timeout Mode Control 8 NEN Receiver VCC/2 = Comparator * GND Figure 1 2 4 RxD Block diagram Note: In comparison with the TLE6250GV33, the pin 8 (INH) was renamed as NEN, but the function remains unchanged. NEN stands for Not ENable. Data Sheet 4 Rev. 1.
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TLE7250GVIO Pin Configuration 3 Pin Configuration 3.1 Pin Assignment TxD 1 8 NEN GND 2 7 CANH VCC 3 6 CANL RxD 4 5 VIO Figure 2 Pin configuration 3.2 Pin Definitions and Functions Table 1 Pin Definition and Functions Pin Symbol Function 1 TxD Transmit Data Input; internal pull-up to VIO, “low” for “dominant” state. 2 GND Ground 3 VCC Transceiver Supply Voltage; 100 nF decoupling capacitor to GND required. 4 RxD Receive Data Output; “low” in “dominant” state.
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TLE7250GVIO Functional Description 4 Functional Description CAN is a serial bus system that connects microcontrollers, sensors and actuators for real-time control applications. The use of the Control Area Network (abbreviated CAN) within road vehicles is described by the international standard ISO 11898. According to the 7-layer OSI reference model, the physical layer of a CAN bus system specifies the data transmission from one CAN node to all other available CAN nodes within the network.
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TLE7250GVIO Functional Description The TLE7250GVIO is a High Speed CAN transceiver, operating as an interface between the CAN controller and the physical bus medium. A HS CAN network is a two-wire, differential network, which allows data transmission rates up to 1 Mbps. The characteristics of a HS CAN network are the two signal states on the CAN bus: “dominant” and “recessive” (see Figure 3). The CANH and CANL pins are the interface to the CAN bus and both pins operate as an input and output.
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TLE7250GVIO Functional Description 4.2 Modes of Operation Two different modes of operation are available on the TLE7250GVIO. Each mode has specific characteristics in terms of quiescent current or data transmission. The digital input pin NEN is used for mode selection. Figure 4 illustrates the different mode changes depending on the status of the NEN pin. After supplying VCC and VIO to the HS CAN transceiver, the TLE7250GVIO starts in stand-by mode.
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TLE7250GVIO Functional Description 4.3 Normal-operating Mode In the normal-operating mode, the HS CAN transceiver TLE7250GVIO sends the serial data stream on the TxD pin to the CAN bus. The data on the CAN bus is displayed at the RxD pin simultaneously. In normal-operating mode, all functions of the TLE7250GVIO are active: • • • • The transmitter is active and drives data from the TxD to the CAN bus. The receiver is active and provides the data from the CAN bus to the RxD pin.
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TLE7250GVIO Fail-safe Functions 5 Fail-safe Functions 5.1 Short-circuit Protection The CANH and CANL bus outputs are short-circuit proof, either against GND or a positive supply voltage. A current limiting circuit protects the transceiver against damage. If the device heats up due to a continuous short on the CANH or CANL, the internal overtemperature protection switches off the bus transmitter. 5.2 Unconnected Logic Pins All logic input pins have an internal pull-up resistor to VIO.
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TLE7250GVIO Fail-safe Functions hysteresis VCC(UV,H) Supply voltage VCC power-down reset level VCC(UV) delay time undervoltage recovery tDelay(UV) NEN = 0 normal-operating mode stand-by mode normal-operating mode1) Supply voltage VIO hysteresis VIO(UV,H) power-down reset level VIO(UV) delay time undervoltage recovery tDelay(UV) NEN = 0 normal-operating mode stand-by mode normal-operating mode1) 1) Assuming the logical signal on the pin NEN keeps its values during the undervoltage event.
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TLE7250GVIO Fail-safe Functions 5.5 Overtemperature Protection Overtemperature event TJSD TJ ΔT Cool Down (shut-down temperature) switch-on transmitter t CANH CANL t TxD t RxD t Figure 7 Overtemperature protection The TLE7250GVIO has an integrated overtemperature detection circuit to protect the device against thermal overstress of the transmitter. In case of an overtemperature condition, the temperature sensor will disable the transmitter (see Figure 1).
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TLE7250GVIO General Product Characteristics 6 General Product Characteristics 6.1 Absolute Maximum Ratings Table 3 Absolute Maximum Ratings of Voltage, Current and Temperatures1) All voltages with respect to ground; positive current flowing into the pin; (unless otherwise specified) Pos. Parameter Symbol Limit Values Min. Max. Unit Remarks Voltage 6.1.1 Supply voltage VCC -0.3 6.0 V – 6.1.2 Logic supply voltage VIO -0.3 6.0 V – 6.1.
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TLE7250GVIO General Product Characteristics 6.2 Functional Range Table 4 Operating Range Pos. Parameter Symbol Limit Values Min. Max. Unit Conditions Supply Voltage 6.2.1 Transceiver supply voltage VCC 4.75 5.25 V – 6.2.2 Logical supply voltage VIO 3.00 5.25 V – Tj -40 150 °C 1) Thermal Parameter 6.2.3 Junction temperature 1) Not subject to production test, specified by design Note: Within the functional range the IC operates as described in the circuit description.
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TLE7250GVIO Electrical Characteristics 7 Electrical Characteristics 7.1 Functional Device Characteristics Table 6 Electrical Characteristics 4.75 V < VCC < 5.25 V; 3.0 V < VIO < 5.25 V; RL = 60 Ω; -40 °C < Tj < +150 °C; all voltages with respect to ground; positive current flowing into the pin; unless otherwise specified. Pos. Parameter Symbol Limit Values Unit Remarks Min. Typ. Max. Current Consumption 7.1.1 Current consumption at VCC ICC – 2 6 mA “recessive” state; VTxD = VIO 7.1.
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TLE7250GVIO Electrical Characteristics Table 6 Electrical Characteristics (cont’d) 4.75 V < VCC < 5.25 V; 3.0 V < VIO < 5.25 V; RL = 60 Ω; -40 °C < Tj < +150 °C; all voltages with respect to ground; positive current flowing into the pin; unless otherwise specified. Pos. Parameter Symbol Limit Values Unit Remarks Min. Typ. Max. 0.5 × 0.7 × VIO VIO Not Enable Input NEN 7.1.18 “High” level input voltage threshold VNEN,H – 7.1.19 “Low” level input voltage threshold VNEN,L 0.3 × 0.
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TLE7250GVIO Electrical Characteristics Table 6 Electrical Characteristics (cont’d) 4.75 V < VCC < 5.25 V; 3.0 V < VIO < 5.25 V; RL = 60 Ω; -40 °C < Tj < +150 °C; all voltages with respect to ground; positive current flowing into the pin; unless otherwise specified. Pos. Parameter Symbol Limit Values Unit Remarks Min. Typ. Max. 7.1.38 Driver symmetry VSYM = VCANH + VCANL VSYM 4.5 – 5.5 V VTxD = 0 V, VCC = 5 V, 50 Ω < RL < 65 Ω 7.1.
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TLE7250GVIO Electrical Characteristics 7.2 Diagrams VIO 7 CANH TxD NEN CL 5 100 nF 1 8 RL RxD 6 4 CRxD CANL GND VCC 3 100 nF 2 Figure 8 Simplified test circuit VTxD VIO GND VDIFF td(L),T 0.9V 0.5V td(L),R VRxD t td(H),T t td(H),R td(L),TR td(H),TR VIO 0.7 x VIO 0.3 x VIO GND t Figure 9 Data Sheet Timing diagram for dynamic characteristics 18 Rev. 1.
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TLE7250GVIO Application Information 8 Application Information 8.1 ESD Immunity According to IEC61000-4-2 Tests for ESD immunity according to IEC61000-4-2, “GUN test” (150 pF, 330 Ω), have been performed. The results and test conditions are available in a separate test report.
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TLE7250GVIO Application Information 8.2 Application Example VBAT I Q1 22 uF TLE4476D CANH CANL EN 100 nF GND 100 nF Q2 3 VCC 22 uF 100 nF VIO 5 TLE7250GVIO 8 NEN 7 CANH 6 1 TxD Out 4 RxD CANL VCC Out In Microcontroller e.g.
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TLE7250GVIO Package Outlines 9 Package Outlines 0.1 2) 0.41+0.1 -0.06 0.2 8 5 1 4 5 -0.2 1) M 0.19 +0.06 4 -0.2 C B 8 MAX. 1.27 1.75 MAX. 0.175 ±0.07 (1.45) 0.35 x 45˚ 1) 0.64 ±0.25 6 ±0.2 A B 8x 0.2 M C 8x A Index Marking 1) Does not include plastic or metal protrusion of 0.15 max. per side 2) Lead width can be 0.61 max.
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TLE7250GVIO Revision History 10 Revision History Revision Date Changes 1.0 2012-03-01 Data Sheet Rev. 1.0 created Data Sheet 22 Rev. 1.
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Edition 2012-03-14 Published by Infineon Technologies AG 81726 Munich, Germany © 2006 Infineon Technologies AG All Rights Reserved. Legal Disclaimer The information given in this document shall in no event be regarded as a guarantee of conditions or characteristics.