AMIS-4168x Fault Tolerant CAN Transceiver Data Sheet 1.0 General Description The new AMIS-41682 and AMIS-41683 are interfaces between the protocol controller and the physical wires of the bus lines in a control area network (CAN). AMIS-41683 is identical to the AMIS-41682 but has a true 3.3V digital interface to the CAN controller. The device provides differential transmit capability but will switch in error conditions to a single-wire transmitter and/or receiver. Initially it will be used for low speed applications, up to 125kBaud, in passenger cars. Both AMIS-41682 and AMIS-41683 are implemented in I2T100 technology enabling both high-voltage analog circuitry and digital functionality to co-exist on the same chip. These products consolidate the expertise of AMIS for in-car multiplex transceivers and support together with AMIS-30522 (VAN), AMIS-30660 and AMIS-30663 (CAN High Speed) and AMIS-30600 (LIN) another widely used physical layer. 2.0 Key Features • Fully compatible with ISO11898-3 standard • Optimized for in-car low-speed communication o Baud rate up to 125kBaud o Up to 32 nodes can be connected o Due to built-in slope control function and a very good matching of the CANL and CANH bus outputs, this device realizes a very low electromagnetic emission (EME) o Fully integrated receiver filters o Permanent dominant monitoring of transmit data input o Differential receiver with wide common-mode range for high electromagnetic susceptibility (EMS) in normal- and low-power modes o True 3.3V digital I/O interface to CAN controller for AMIS-41683 only • Management in case of bus failure o In the event of bus failures, automatic switching to single-wire mode, even when the CANH bus wire is short circuited to VCC o The device will automatically reset to differential mode if the bus failure is removed o During failure modes there is full wake-up capability. o Un-powered nodes do not disturb bus lines o Bus errors and thermal shutdown activation is flagged on ERRB pin • Protection issues o Short circuit proof to battery and ground o Thermal protection o The bus lines are protected against transients in an automotive environment o An un-powered node does not disturb the bus lines • Support for low power modes o Low current sleep and standby mode with wake-up via the bus lines o Power-on flag on the output o Two-edge sensitive wake-up input signal via pin WAKEB • IOs o The un-powered chip cannot be parasitically supplied either from digital inputs nor from digital outputs. 3.0 Technical Characteristics Table 1: Technical Characteristics Symbol Parameter VCANH DC voltage at pin CANH, CANL Vbat Voltage at pin Vbat AMI Semiconductor – Rev. 2.0 – Feb. 07 www.amis.com Conditions 0 < VCC < 5.25V; no time limit Load-dump 1 Min -40 Max +40 +40 Unit V V AMIS-4168x Fault Tolerant CAN Transceiver Data Sheet 4.0 Ordering Information Table 2: Ordering information Marketing Name AMIS41682NGA AMIS41683NGA Package SOIC-14 GREEN SOIC-14 GREEN Temp.Range -40°C…125°C -40°C…125°C 5.0 Block Diagram VBAT INH VCC 14 1 10 Vcc (*) POR STB EN WAKE Mode & wake-up control 5 6 9 7 Vcc (*) TxD GND ERR 11 Thermal shutdown Driver control 8 2 Timer 13 4 Failure handling Receiver RxD 12 Filter 3 AMIS-4168x (*) For AMIS-41682 pull up to Vcc. For AMIS-41683 pull up to Vcc/2 AMIS-41683 AMIS-41682 VCC ERR 4 Failure handling VCC RxD 3 ERR RxD 4 Failure handling 3 PC20050610.3 Figure 1: Block Diagram AMI Semiconductor – Rev. 2.0 – Feb. 07 www.amis.com 2 RTL CANH CANL RTH AMIS-4168x Fault Tolerant CAN Transceiver Data Sheet 6.0 Typical Application Schematic 6.1. Application Schematic OUT 5V-reg IN VBAT * VCC INH VCC VBAT 1 10 WAKE 14 EN 6 ERR 4 CAN controller STB RxD 7 9 12 AMIS-41682 5 11 3 TxD 2 8 13 GND RTL CANL CANH RTH GND * optional CAN BUS LINE PC20050610.1 Figure 2: Application Diagram AMIS-41682 OUT OUT 3.3Vreg IN 5V-reg IN VBAT * 4.7 kΩ 4.7 kΩ VCC VCC INH 10 VBAT 1 14 EN 6 ERR 4 3.3V CAN controller STB RxD AMIS-41683 5 11 3 13 CANL CANH 8 RTH CAN BUS LINE PC20050610.2 Figure 3: Application Diagram AMIS-41683 AMI Semiconductor – Rev. 2.0 – Feb. 07 RTL GND GND www.amis.com 9 12 TxD 2 * optional WAKE 7 3 AMIS-4168x Fault Tolerant CAN Transceiver Data Sheet 6.2. Pin Description 6.2.1. Pin Out (top view) 1 TxD 2 RxD 3 ERR 4 STB 5 EN 6 WAKE 7 AMIS-4168x INH 14 VBAT 13 GND 12 CANL 11 CANH 10 VCC 9 RTL 8 RTH PC20041029.1 Figure 4: Pin Configuration 6.2.2. Pin Description Table 3: Pin Description Pin Name Description 1 2 3 4 5 6 7 8 9 10 11 12 13 14 INH TxD RxD ERR-B STB-B EN WAKEB RTH RTL Vcc CANH CANL GND BAT Inhibit output for external voltage regulator Transmit data input; internal pull-up current Receive data output Error; wake-up and power-on flag; active low Standby digital control input; active low; pull-down resistor Standby digital control input; active high; pull-down resistor Enable digital control input; falling and rising edges are both detected Pin for external termination resistor at CANH Pin for external termination resistor at CANL 5V supply input Bus line; high in dominant state Bus line; low in dominant state Ground Battery supply Functional description and characteristics are made for AMIS-41682 but are also valid for AMIS-41683. between the two devices will be explicitly mentioned in text. AMI Semiconductor – Rev. 2.0 – Feb. 07 www.amis.com 4 Differences AMIS-4168x Fault Tolerant CAN Transceiver Data Sheet 7.0 Functional Description 7.1. Description AMIS-41682 is a fault tolerant CAN transceiver which works as an interface between the CAN protocol controller and the physical wires of the CAN bus (see Figure 2). It is primarily intended for low speed applications, up to 125kBaud, in passenger cars. The device provides differential transmit capability to the CAN bus and differential receive capability to the CAN controller. The AMIS-41683 has open-drain outputs (RXD and ERR-B pins) that allow the user to use external pull-up resistors to the required supply voltage; this can be 5V or 3.3V. To reduce EME, the rise and fall slope are limited. Together with matched CANL and CANH output stages, this allows the use of an unshielded twisted pair or a parallel pair of wires for the bus lines. The failure detection logic automatically selects a suitable transmission mode, differential or single-wire transmission. Together with the transmission mode, the failure detector will configure the output stages in such a way that excessive currents are avoided and that the circuit returns to normal operation when the error is removed. A high common-mode range for the differential receiver guarantees reception under worst case conditions and together with the integrated filter the circuit realizes an excellent immunity against EMS. The receivers connected to pins CANH and CANL have threshold voltages that ensure a maximum noise margin in single-wire mode. A timer has been integrated at pin TXD. This timer prevents the AMIS-41682 from driving the bus lines to a permanent dominant state. 7.2. Failure Detector The failure detector is fully active in the normal operating mode. After the detection of a single bus failure the detector switches to the appropriate mode. The different wiring failures are depicted in Figure 5. The figure also indicates the effect of the different wiring failures on the transmitter and the receiver. The detection circuit itself is not depicted. The differential receiver threshold voltage is typically set at 3V (VCC = 5V). This ensures correct reception with a noise margin as high as possible in the normal operating mode and in the event of failures 1, 2, 4, and 6a. These failures, or recovery from them, do not destroy ongoing transmissions. During the failure, reception is still done by the differential receiver and the transmitter stays fully active. To avoid false triggering by external RF influences the single-wire modes are activated after a certain delay time. When the bus failure disappears for another time delay, the transceiver switches back to differential mode. When one of the bus failures 3, 5, 6, 6a, and 7 is detected, the defective bus wire is disabled by switching off the affected bus termination and the respective output stage. A wake-up from sleep mode via the bus is possible either via a dominant CANH or CANL line. This ensures that a wake-up is possible even if one of the failures 1 to 7 occurs. If any of the wiring failure occurs, the output signal on pin ERRB will become low. On error recovery, the output signal on pin ERRB will become high again. During all single-wire transmissions, the EMC performance (both immunity and emission) is worse than in the differential mode. The integrated receiver filters suppress any HF noise induced into the bus wires. The cut-off frequency of these filters is a compromise between propagation delay and HF suppression. In the single-wire mode, LF noise cannot be distinguished from the required signal. AMI Semiconductor – Rev. 2.0 – Feb. 07 www.amis.com 5 AMIS-4168x Fault Tolerant CAN Transceiver Failure 1 : CANH wire interrupted Failure 4 : CANL shorted to Gnd Vbat Vcc Vbat Vcc RTL RTL RTL 0.6Vcc RxD CANL CANL CANH CANH ERR CD RxD RxD CH ERR CANL CANL CANH CANH ERR 0.6Vcc CD RxD RxD CH ERR CANH CANH RTL CANL CANL CANH CANH ERR CD RxD ERR CANL CANL CANH CANH ERR 0.4Vcc RTH RTH Vbat Vcc RTL CANL CANL CANH CANH 0.6Vcc CD TxD RxD RxD CH ERR RTH CANL CANH CANH Vbat Vcc RTL TxD CL CANL CANH CANH ERR CD RxD CH RxD CH RTH Error-detection: dominant longer then Tnd_f7 Failure 5 : CANH shorted to Gnd 0.6Vcc CD 0.4Vcc RTH Error-detection: CANH >2V longer then Tnd_f3 TxD CL CANL ERR 0.4Vcc CANL RTL TxD CL ERR 0.4Vcc RTH Error-detection: CL = CH more then 4 pulses Figure 5: Different Types of Wiring Failure AMI Semiconductor – Rev. 2.0 – Feb. 07 ERR Failure 7 : CANH shorted to CANL ERR www.amis.com RxD CH Error-detection: CL = CH more then 4 pulses RTL GND TxD CD 0.4Vcc RTH 0.6Vcc RTH RTL CL RxD CH Failure 3a : CANH shorted to Vcc Vcc Vbat Vcc RxD Vcc 0.6Vcc TxD Error-detection: CANH > 2V longer then Tnd_f3 TxD ERR RTH TxD CL RTL CH Failure 6a : CANL shorted to Vcc RTL Vcc RxD 0.4Vcc Vbat Vcc RTH TxD CD Error-detection: CANL>7V 0.6Vcc RxD CANL RTH Vbat Vcc TxD CANL ERR Failure 3 : CANH shorted to Vbat RTL ERR CL TxD RTH Vbat CH RTL RTL Error-detection: CL = CH more then 4 pulses RTH RxD RTH TxD 0.4Vcc RTL CD Failure 6 : CANL wire shorted to Vbat Vbat Vcc Vbat CL RxD CANH Error-detection: dominant longer then Tnd_f4 0.6Vcc TxD CANH RTH RTL RTH CANL 0.4Vcc RTH Vbat Vcc RxD CANL ERR Failure 2 : CANL wire interrupted TxD TxD CL Error-detection: CL = CH more then 4 pulses RTL RTL 0.6Vcc TxD 0.4Vcc RTH GND TxD CL TxD Data Sheet 6 ERR AMIS-4168x Fault Tolerant CAN Transceiver Data Sheet 7.3. Low Power Modes The transceiver provides three low power modes that can be entered and exited via pins STBB and EN (see Figure 6). (Go-tosleep mode is only a transition mode.) The sleep mode is the mode with the lowest power consumption. Pin INH is switched to high-impedance for deactivation of the external voltage regulator. Pin CANL is biased to the battery voltage via pin RTL. If the supply voltage is provided, pins RXD and ERRB will signal the wake-up interrupt signal. The standby mode will react the same as the sleep mode but with a high-level on pin INH. The power-on standby mode is the same as the standby mode with the battery power-on flag instead of the wake-up interrupt signal on pin ERRB. The output on pin RXD will show the wake-up interrupt. This mode is only for reading out the power-on flag. Wake-up request is detected by the following events: o Local wake-up: Rising or falling edge on input WAKEB (Levels maintained for a certain period). o Remote wake-up from CAN bus : A message with five consecutive dominant bits. On a wake-up request the transceiver will set the output on pin INH high which can be used to activate the external supply voltage regulator. Note: Pin INH is also set similar as an after wake up event by VBAT voltage being below the battery power on flag level. See FLAG_VBAT in Table 6) If VCC is provided, the wake-up request can be read on the ERR-B or RXD outputs so the external microcontroller can wake-up the transceiver (switch to normal operating mode) via pins STB-B and EN. In the low power modes the failure detection circuit remains partly active to prevent increased power consumption in the event of failures 3, 3a, 4, and 7. The go-to-sleep-mode is only a transition mode. The pin INH stays active for a limited time. During this time the circuit can still go to another low-power mode. After this time the circuit goes to the sleep-mode. In case of a wake up request (from BUS or WAKEB pin) during this transition time, the wake up request ha higher priority than go-to-sleep and INH will not be deactivated. Once VCC is below the threshold level of LAG_Vcc , the signals on pins STB-B and EN will internally be set to low-level to provide fail safe functionality. AMI Semiconductor – Rev. 2.0 – Feb. 07 www.amis.com 7 AMIS-4168x Fault Tolerant CAN Transceiver Data Sheet Power-On Stand-by STB EN High Low EN change state INH ERR RxD RTL Act PORflag WUint Vbat EN, STB change state STB change state Normal Mode STB EN High High INH ERR Act Errflag GoTo Sleep Mode STB change state RxD RTL Rec. out STB Vcc EN Low High EN, STB change state INH ERR RxD RTL Act 2) WUint WUint Vbat Time-out GoToSleep mode EN change state Sleep Mode Standby Mode STB Low EN Low INH ERR RxD RTL Act WUint WUint Vbat STB Local or Remote Wake-up 3) Power-On 1) Only when Vcc > POR_Vcc 2) INH active for a time = T_GoToSleep 3) Local Wake-up through pin Wake which change state for a time > T_wake_min Remote Wake-up through pin CANL or CANH when dominant for a time >TCANH_min or TCANL_min 4) Mode Change through pins STB and EN is only possible if Vcc > POR_Vcc Low EN Low INH ERR RxD RTL Hz WUint 1) WUint 1) Vbat Mode Change 4) Figure 6: Low Power Modes 7.4. Power-on After power-on (VBAT switched on) the signal on pin INH will become high and an internal power-on flag will be set. This flag can be read in the power-on standby mode via pin ERRB (STB-B = 1; EN = 0) and will be reset by entering the normal operating mode. 7.5. Protections A current limiting circuit protects the transmitter output stages against short circuit to positive and negative battery voltage. If the junction temperature exceeds a maximum value, the transmitter output stages are disabled and flagged on ERRB pin. Because the transmitter is responsible for the major part of the power dissipation, this will result in reduced power dissipation and hence a lower chip temperature. All other parts of the IC will remain operating. The pins CANH and CANL are protected against electrical transients that may occur in an automotive environment. AMI Semiconductor – Rev. 2.0 – Feb. 07 www.amis.com 8 AMIS-4168x Fault Tolerant CAN Transceiver Data Sheet 8.0 Electrical Characteristics 8.1. Definitions All voltages are referenced to GND (pin 13). Positive currents flow into the IC. Sinking current means that the current is flowing into the pin. Sourcing current means that the current is flowing out of the pin. 8.2. Absolute Maximum Ratings Stresses above those listed in this clause may cause permanent device failure. Exposure to absolute maximum ratings for extended periods may effect device reliability. Table 4: Absolute Maximum Ratings Symbol Parameter Min. Max. Unit VCC Supply voltage on pin VCC -0.3 +6 V VBAT Battery voltage on pin BAT -0.3 +40 V Vdig DC voltage on pins EN, STB-B, ERR-B, TxD, RxD -0.3 VCC + 0.3 V VCANH-L DC voltage on pin CANH, CANL -40 +40 V Vtran-CAN Transient voltage on pins CANH and CANL (Figure 11) note 1 -350 +350 V VWAKE DC input voltage on pin WAKE -40 +40 V VINH DC output voltage on pin INH -0.3 VBAT + 0.3 V VRTH-L DC voltage on pin RTH , RTL -40 40 V RRTH Termination resistance on pin RTH 500 16000 Ω RRTL Termination resistance on pin RTL 500 16000 Ω Tjunc Maximum junction temperature -40 +150 ºC Electrostatic discharge voltage (CANH- and CANL pin) HBM; note 2 -6 +6 kV Electrostatic discharge voltage (other pins) HBM; note 2 -3.0 +3.0 kV Electrostatic discharge voltage; machine model; note 3 -500 +500 V Vesd Notes: 1. The applied transients shall be in accordance with ISO 7637 part 1, test pulses 1, 2, 3a, and 3b. Class C operation 2. Equivalent to discharging a 100pF capacitor through a 1.5kOhm resistor. 3. Equivalent to discharging a 200pF capacitor through a 10Ohm resistor and a 0.75µH coil. 8.3. Thermal Characteristics Table 5: Thermal Characteristics Symbol Parameter Conditions Value Unit Rth(vj-a) Thermal resistance from junction to ambient in SSOP14 package (2 layer PCB) In free air 140 K/W Rth(vj-s) Thermal resistance from junction to substrate of bare die In free air 30 K/W AMI Semiconductor – Rev. 2.0 – Feb. 07 www.amis.com 9 AMIS-4168x Fault Tolerant CAN Transceiver Data Sheet 8.4. Characteristics VCC = 4.75V to 5.25V; VBAT = 5V to 36V; Tjunc = −40°C to +150°C; unless otherwise specified. Table 6: Characteristics AMIS-4168x Symbol Parameter Supplies Vcc Vbat ICC Supply current LAG_Vcc Forced low power mode IBAT Battery current on pin BAT ICC+ IBAT Supply current plus battery current ICC+ IBAT Supply current plus battery current FLAG_VBAT Power-on flag-level for pin Vbat Pins STB-B, EN and TXD R-PD Pull-down resistor at pin EN and STB-B T_Dis_TxD Dominant time-out for TxD T_GoToSleep Minimum hold-time for Go-To-Sleep mode Pin WAKE-B IIL Low-level input current Vth(WAKE) Wake-up threshold voltage T_Wake_Min Minimum time on pin wake (debounce time) Pin INH Delta_VH I_leak High-level voltage drop Leakage current Table 7: Characteristics AMIS-41682 (5V version) Symbol Parameter Pins STB-B, EN and TXD VIH High-level input voltage VIL Low-level input voltage I-PU-H High-level input current pin TXD I-PU-L Low-level input current pin TXD Pins RXD and ERR-B VOH High-level output voltage VOL Low-level output voltage Table 8: Characteristics AMIS-41683 (3.3V version) Symbol Parameter Pins STB-B, EN and TXD VIH High-level input voltage VIL Low-level input voltage I-PU-H High-level input current pin TXD Pins RXD and ERR-B VOL Low-level output voltage open drain I_leak Leakage when driver is off AMI Semiconductor – Rev. 2.0 – Feb. 07 www.amis.com Conditions Min. Typ. Max. Unit 1 3.7 6.3 mA 1 8 12 mA 4.5 V V 110 230 µA 30 60 µA 80 µA 2.1 2.4 1 V V 360 600 4 50 KΩ ms µs -1 3.9 µA V 38 µs 0.8 1 V µA Max. Unit TXD = 0.7 * Vcc TXD = 0.3 * Vcc 0.7 x Vcc -0.3 -10 -80 6.0 0.3 x Vcc -200 -800 V V µA µA lsource = -1mA Isink = 1.6mA Isink = 7.5mA VCC - 0.9 0 0 VCC 0.4 1.5 V V V Max. Unit 6.0 0.8 V V µA 0.4 1 V µA Normal operating mode; VTXD = VCC (recessive) Normal operating mode; VTXD = 0V (dominant); no load VCC rising VCC falling In all modes of operation; 500Ω between RTL - CANL 500Ω between RTH - CANH VBAT = WAKE = INH = 5 to 36V Low power modes; Vcc = 5V; Tamb = -40°C to 100°C VBAT = WAKE = INH = 5 to 36V Low power modes; Vcc = 5V; Tamb = 100°C to 150°C VBAT = WAKE = INH = 5 to 36V For setting power-on flag For not setting power-on flag 2.45 10 3.5 1V Normal mode; VtxD = 0V 190 0.75 5 VWAKE = 0V; VBAT = 27V VSTB-B = 0V VBAT = 12V; low power mode; for rising and falling edge -10 2.5 3.2 7 IINH = 0.18mA Sleep mode; VINH = 0V Conditions Conditions Min. Min. Typ. Typ. 2 -0.3 TXD = 2V lsink = 3.2mA VERR-B = VRXD = 5V 10 -10 AMIS-4168x Fault Tolerant CAN Transceiver Table 9: Characteristics AMIS-4168x continued Symbol Parameter Conditions Pins CANH and CANL (Receiver) Vdiff Differential receiver No failures and bus failures 1, 2, 4, and 6a; threshold voltage see Figure 5 VCC = 5V VCC = 4.75V to 5.25V VseCANH Single-ended receiver Normal operating mode and failures 4, 6 and 7 threshold voltage on pin VCC = 5V CANH VCC = 4.75 to 5.25V VseCANL Single-ended receiver Normal operating mode and failures 3 and 3a threshold voltage on pin VCC = 5V CANL VCC = 4.75 to 5.25V Detection threshold voltage Vdet(CANL) Normal operating mode for short circuit to battery voltage on pin CANL Wake-up threshold voltage Vth(wake) On pin CANL Low power modes On pin CANH Low power modes Difference of wake-up DVth(wake) Low power modes Threshold voltages Pins CANH and CANL (Transmitter) VO(reces) Recessive output voltage VTXD = VCC On pin CANH RRTH < 4kΩ On pin CANL RRTL < 4kΩ VO(dom) Dominant output voltage VTXD = 0V; VEN = VCC On pin CANH ICANH = -40mA On pin CANL ICANL = 40mA Normal operating mode; VCANH = 0V; VTXD = 0V IO(CANH) Output current on pin CANH Low power modes; VCANH = 0V; VCC = 5V Normal operating mode; IO(CANL) Output current on pin CANL VCANL = 14V; VTXD = 0V Low power modes; VCANL = 12V; VBAT = 12V Pins RTH and RTL Switch-on resistance Rsw(RTL) Normal operating mode; I(RTL)> -10mA between pin RTL and VCC Switch-on resistance Rsw(RTH) between pin RTH and Normal operating mode; I(RTH)< 10mA ground VO(RTH) Output voltage on pin RTH Low power modes; IO = 1mA IO(RTL) Output current on pin RTL Low power modes; VRTL = 0V Normal operating mode and failures 4, 6 and 7; Ipu(RTL) Pull-up current on pin RTL VRTL= 0V Pull-down current on pin Normal operating mode and failures 3 and 3a Ipd(RTH) RTH Thermal Shutdown Tj Junction temperature For shutdown AMI Semiconductor – Rev. 2.0 – Feb. 07 www.amis.com 11 Data Sheet Min. Typ. Max. Unit -3.25 0.65 x Vcc -3 0.6 x Vcc -2.75 0.55 x Vcc V V 1.6 0.32 x Vcc 1.775 0.355 x Vcc 1.95 0.39 x Vcc V V 3 0.61 x Vcc 3.2 0.645 x Vcc 3.4 0.68 x Vcc V V 6.5 7.3 8 V 2.5 1.1 3.2 1.8 3. 9 2.25 V V 0.8 1.4 V 0.2 Vcc - 0.2 Vcc - 1.4 V V 1.4 V V -110 -80 -45 mA -1.6 0.5 1.6 µA 45 80 110 mA -1 0.5 1 µA 100 Ω 100 Ω 1.0 -0.3 V mA -1.25 150 -75 µA -75 µA 180 °C AMIS-4168x Fault Tolerant CAN Transceiver Data Sheet 8.5. Timing Characteristics VCC = 4.75V to 5.25V; VBAT = 5V to 27V; VSTB-B = VCC; Tjunc = −40°C to +150°C; unless otherwise specified. Table 10: Timing Characteristics AMIS-4168x Symbol Parameter CANL and CANH output tt(r-d) transition time for recessiveto-dominant CANL and CANH output tt(d-r) transition time for dominant-torecessive tPD(L) tPD(H) tCANH(min) tCANL(min) tdet trec Dpc Propagation delay TXD to RXD (LOW) Propagation delay TXD to RXD (HIGH) Minimum dominant time for wake-up on pin CANH Minimum dominant time for wake-up on pin CANL Failure detection time Failure recovery time Pulse-count difference between CANH and CANL AMI Semiconductor – Rev. 2.0 – Feb. 07 www.amis.com Conditions 10 to 90%; C1 = 10nF; C2 = 0; R1 = 125Ω; see Figure 7 Min Typ Max Unit 0.35 0.60 1.4 µs 10 to 90%; C1 = 1nF; C2 = 0; R1 = 125Ω; see Figure 7 0.2 0.3 0.7 µs 0.75 1.4 1.5 2.1 µs µs 1.2 1.4 1.9 2.1 µs µs 1.2 1.5 1.9 2.2 µs µs 0.75 2.5 1.5 3.0 µs µs 1.2 2.5 1.9 3.0 µs µs 1.2 1.5 1.9 2.2 µs µs No failures C1 = 1nF; C2 = 0; R1 = 125Ω C1 = C2 = 3.3nF; R1 = 125Ω Failures 1, 2, 5, and 6a; see Figure 5, 7 C1 = 1nF; C2 = 0; R1 = 125Ω C1 = C2 = 3.3nF; R1 = 125Ω Failures 3, 3a, 4, 6, and 7; see Figure 5, 7 C1 = 1nF; C2 = 0; R1 = 125Ω C1 = C2 = 3.3nF; R1 = 125Ω No failures C1 = 1nF; C2 = 0; R1 = 125Ω C1 = C2 = 3.3nF; R1 = 125Ω Failures 1, 2, 5, and 6a; see Figure 5, 7 C1 = 1nF; C2 = 0; R1 = 125Ω C1 = C2 = 3.3nF; R1 = 125Ω Failures 3, 3a, 4, 6, and 7; see Figure 5, 7 C1 = 1nF; C2 = 0; R1 = 125Ω C1 = C2 = 3.3nF; R1 = 125Ω Low power modes; VBAT = 12V 7 38 µs Low power modes; VBAT = 12V 7 38 µs 1.6 0.3 8.0 1.6 ms ms 1.6 0.1 8.0 1.6 ms ms 0.3 7 125 1.6 38 750 ms µs µs 0.3 1. 6 ms Normal mode Failure 3 and 3a Failure 4, 6 and 7 Low power modes; VBAT = 12V Failure 3 and 3a Failure 4 and 7 Normal mode Failure 3 and 3a Failure 4 and 7 Failure 6 Low power modes; VBAT = 12V Failures 3, 3a, 4, and 7 Normal mode and failures 1, 2, 4, and 6a Failure detection (pin ERR-B becomes LOW) Failure recovery (pin ERR-B becomes HIGH) 12 4 4 - AMIS-4168x Fault Tolerant CAN Transceiver Data Sheet BATTERY +5V WAKE 14 7 9 EN 6 ERR 4 STB RxD 12 AMIS-4168x 5 11 3 TxD 2 20 pF 8 13 RTL CANL R1 C1 500 VBAT 1 C3 CANH RTH 10 kΩ 10 kΩ C2 500 VCC INH 10 Common Mode voltage R2 GND V PC20050511.1 Figure 7: Test Circuit for Dynamic dominant recessive recessive TxD 50% 50% tt(r-d) VCANL tt(d-r) 3.6V 90% 90% 10% 10% 1.4V VCANH 5V 0V RxD 0.7Vcc 0.3Vcc tPD(L) tPD(H) PC20050511.3 Figure 8: Timing Diagram for AC Characteristics AMI Semiconductor – Rev. 2.0 – Feb. 07 www.amis.com 13 AMIS-4168x Fault Tolerant CAN Transceiver Data Sheet BATTERY 100 nF 10 kΩ +5V 33 kΩ 1 14 EN 6 ERR 4 STB TxD Generator RxD 5 WAKE 7 9 12 AMIS-4168x 11 2 RTL CANL 20 pF 120 Ω 4.7 nF Active Probe CANH 3 13 560 Ω VBAT VCC INH 10 8 RTH 560 Ω 100 nF 120 Ω 4.7 nF GND PC20050511.5 Figure 9: Test Setup EME Measurements Figure 10: EME Measurements (See Measurement Setup Figure 9) AMI Semiconductor – Rev. 2.0 – Feb. 07 www.amis.com 14 Spectrum Anayzer AMIS-4168x Fault Tolerant CAN Transceiver Data Sheet BATTERY +5V 14 EN 6 ERR 4 STB RxD 5 WAKE 7 9 12 AMIS-4168x 11 3 TxD 2 20 pF 8 13 1 nF RTL CANL 511 Ω VBAT 1 CANH RTH 125 Ω GND PC20041029.5 Figure 11: Test Circuit for Schaffner Tests (ISO 7637 part AMI Semiconductor – Rev. 2.0 – Feb. 07 www.amis.com 15 1 nF Transient Generator 511 Ω VCC INH 10 1 nF 1 nF AMIS-4168x Fault Tolerant CAN Transceiver Data Sheet 9.0 Package Outline SOIC-14: Plastic small outline; 14 leads; body width 150 mil; JEDEC: MS-012 AMI Semiconductor – Rev. 2.0 – Feb. 07 www.amis.com 16 AMIS reference: SOIC150 14 150 G AMIS-4168x Fault Tolerant CAN Transceiver Data Sheet 10.0 Soldering 10.1 Introduction to Soldering Surface Mount Packages This text gives a very brief insight to a complex technology. A more in-depth account of soldering ICs can be found in the AMIS “Data Handbook IC26; Integrated Circuit Packages” (document order number 9398 652 90011). There is no soldering method that is ideal for all surface mount IC packages. Wave soldering is not always suitable for surface mount ICs, or for printed-circuit boards with high population densities. In these situations reflow soldering is often used. 10.2 Re-flow Soldering Re-flow soldering requires solder paste (a suspension of fine solder particles, flux and binding agent) to be applied to the printedcircuit board by screen printing, stencilling or pressure-syringe dispensing before package placement. Several methods exist for reflowing; for example, infrared/convection heating in a conveyor type oven. Throughput times (preheating, soldering and cooling) vary between 100 and 200 seconds depending on heating method. Typical re-flow peak temperatures range from 215 to 250°C. The top-surface temperature of the packages should preferably be kept below 230°C. 10.3 Wave Soldering Conventional single wave soldering is not recommended for surface mount devices (SMDs) or printed-circuit boards with a high component density, as solder bridging and non-wetting can present major problems. To overcome these problems the doublewave soldering method was specifically developed. If wave soldering is used the following conditions must be observed for optimal results: • Use a double-wave soldering method comprising a turbulent wave with high upward pressure followed by a smooth laminar wave. • For packages with leads on two sides and a pitch (e): o Larger than or equal to 1.27mm, the footprint longitudinal axis is preferred to be parallel to the transport direction of the printed-circuit board; o Smaller than 1.27mm, the footprint longitudinal axis must be parallel to the transport direction of the printedcircuit board. The footprint must incorporate solder thieves at the downstream end. • For packages with leads on four sides, the footprint must be placed at a 45º angle to the transport direction of the printedcircuit board. The footprint must incorporate solder thieves downstream and at the side corners. During placement and before soldering, the package must be fixed with a droplet of adhesive. The adhesive can be applied by screen printing, pin transfer or syringe dispensing. The package can be soldered after the adhesive is cured. Typical dwell time is four seconds at 250°C. A mildly-activated flux will eliminate the need for removal of corrosive residues in most applications. 10.4 Manual Soldering Fix the component by first soldering two diagonally-opposite end leads. Use a low voltage (24V or less) soldering iron applied to the flat part of the lead. Contact time must be limited to 10 seconds at up to 300°C. When using a dedicated tool, all other leads can be soldered in one operation within two to five seconds between 270 and 320°C. Table 11: Soldering Process Package BGA, SQFP Soldering Method Wave Re-flow(1) Not suitable Suitable HLQFP, HSQFP, HSOP, HTSSOP, SMS Not suitable (2) Suitable PLCC (3) , SO, SOJ Suitable Suitable LQFP, QFP, TQFP Not recommended (3)(4) Suitable SSOP, TSSOP, VSO Not recommended (5) Suitable Notes: 1. All surface mount (SMD) packages are moisture sensitive. Depending upon the moisture content, the maximum temperature (with respect to time) and body size of the package, there is a risk that internal or external package cracks may occur due to vaporization of the moisture in them (the so called popcorn effect). For details, refer to the drypack information in the “Data Handbook IC26; Integrated Circuit Packages; Section: Packing Methods.” 2. These packages are not suitable for wave soldering as a solder joint between the printed-circuit board and heatsink (at bottom version) can not be achieved, and as solder may stick to the heatsink (on top version). 3. If wave soldering is considered, then the package must be placed at a 45° angle to the solder wave direction. The package footprint must incorporate solder thieves downstream and at the side corners. 4. Wave soldering is only suitable for LQFP, TQFP and QFP packages with a pitch (e) equal to or larger than 0.8mm; it is definitely not suitable for packages with a pitch (e) equal to or smaller than 0.65mm. 5. Wave soldering is only suitable for SSOP and TSSOP packages with a pitch (e) equal to or larger than 0.65mm; it is definitely not suitable for packages with a pitch (e) equal to or smaller than 0.5mm. AMI Semiconductor – Rev. 2.0 – Feb. 07 www.amis.com 17 AMIS-4168x Fault Tolerant CAN Transceiver Data Sheet 11.0 Company or Product Inquiries For more information about AMI Semiconductor, our technology and our product, visit our Web site at: http://www.amis.com. North America Tel: +1.208.233.4690 Fax: +1.208.234.6795 Europe Tel: +32 (0) 55.33.22.11 Fax: +32 (0) 55.31.81.12 Devices sold by AMIS are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. AMIS makes no warranty, express, statutory, implied or by description, regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. AMIS makes no warranty of merchantability or fitness for any purposes. AMIS reserves the right to discontinue production and change specifications and prices at any time and without notice. AMI Semiconductor's products are intended for use in commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment, are specifically not recommended without additional processing by AMIS for such applications. Copyright ©2007 AMI Semiconductor, Inc. AMI Semiconductor – Rev. 2.0 – Feb. 07 www.amis.com 18