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| UC5350 PRELIMINARY CAN Transceiver FEATURES * Pin Compatible with PCA82C250 and DeviceNet, SDS, ISO11898 Compatible High Speed, up to 1Mbps Differential Transmit to the Bus and Receive from the Bus to the CAN Controller At Least 110 Nodes Can Be Connected 100V Transient Protection on the Transmit Output 24V Supply Cross Wire Protection on CANH and CANL No Bus Loading When Powered Down Operates over -40C to +85C Unitrode DeviceNet ID#107 DESCRIPTION The UC5350 Control Area Network Transceiver is designed for industrial applications employing the CAN serial communications physical layer per ISO 11898 standard. The device is a high speed transceiver designed for use up to 1Mbps. Especially designed for hostile environments, this device features cross wire, loss of ground, over voltage, and over temperature protections well as a wide common mode range. The transceiver interfaces the single ended CAN controller with the differential CAN bus found in industrial and automotive applications. It operates over the -7V to +12V common mode range of the bus and will withstand common mode transients of -25V to +18V as well as Schaffner tests. Performance features include high differential input impedance, a symmetrical differential signal driver and very low propogation delay that improves bus bandwidth and length by reducing reflection and distortion. The transceiver operates over a wide temperature range, -40C to +85C and is available in 8-pin SOIC and Dual-in-Line packages. * * * * * * * * FUNCTIONAL TABLE (VCC = 4.5V to 5.5V) Inputs TXD RS 0 0 1 0 High Z 0 X 1 System Mode High Speed High Speed High Speed Standby Output Mode Dominant Recessive Recessive VCANH - VCANL 1.5V to 3V -120mV to +12mV -120mV to +12mV High Z Outputs RXD 0 1 1 0 at Bus = Dominant 1 at Bus = Recessive BLOCK DIAGRAM UDG-96202 SLUS258A - MARCH 2000 UC5350 ABSOLUTE MAXIMUM RATINGS Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 9V TXD, RXD, VREF, RS . . . . . . . . . . . . . . . -0.3V to VCC + 0.3V CANL, CANH 0V < VCC < 5.5V. . . . . . . . . . . . . . . . . . . . . . . . -8V to +36V Non-Destructive, Non-Operative . . . . . . . . . . . . -8V to +32V Transient, Schaffner Test (Fig. 1) . . . . . . . . . -150 to +100V Operating Temperature . . . . . . . . . . . . . . . . . . -40C to +85C Storage Temperature . . . . . . . . . . . . . . . . . . . -65C to +150C Junction Temperature . . . . . . . . . . . . . . . . . . . -55C to +150C Lead Temperature (Soldering, 10 sec.) . . . . . . . . . . . . . +300C Crosswire Protection Maximum VBUS . . . . . . . . . . . . . . . . 30V Bus Differential Voltage* . . . . . . . . . . . . . . . . . . . . . . . . . . . 30V Cross Wire Protection TA . . . . . . . . . . . . . . . . . -40C to 125C Currents are positive into, negative out of the specified terminal. Consult Packaging Section of the Databook for thermal limitations and considerations of packages. *Refers to Figures 9, 10, 11, 12 and 13. CONNECTION DIAGRAM DIL-8, SOIC-8 (Top View) N, D Package See Figure 7 for Pulse Timing UDG-96203-1 Figure 1. Schaffner Test ELECTRICAL CHARACTERISTICS (Total Device) Unless otherwise stated, the device is disconnected from the bus line; VCC = 4.5V to 5.5V; 60 PARAMETER Supply Voltage Supply Current Dominant, TXD = 1V Recessive, TXD = 4V Standby, RS = 4V RS Input Current RS Voltage Input = Logic 1 RS Voltage Input = Logic 0 Transmitter Voltage Input = Logic 1 Transmitter Voltage Input = Logic 0 Transmitter Current Input at Logic 1 Transmitter Current Input at Logic 0 Receiver Voltage Output = Logic 1 Receiver Voltage Output = Logic 0 CANH, CANL Input Resistance Differential Input Resistance CANH, CANL Input Capacitance Differential Input Capacitance Reference Output Voltage Standby High Speed Transmitter Output Recessive Transmitter Output Dominant TXD = 4V TXD = 1V RXD = -100A, TXD = 4V RXD = 1mA, TXD = 1V RXD = 10mA, TXD = 1V No Load, TXD = 4V No Load, TXD = 4V (Note 1) (Note 1) VREF = 50A 0.45VCC 20 40 -30 VCC -1.25 0.75 1.2 40 80 20 10 0.55VCC 1.2 1.7 0.7VCC 0.3VCC 30 30 -10 0.75VCC 0.3VCC 9 1.2 in parallel with 100pF load between CANH and CANL; TA = -40C to +85C, TA = TJ TEST CONDITIONS MIN 4.5 TYP MAX 5.5 70 14 2.0 5 UNITS V mA mA mA A V V V V A A V V V k k pF pF V Note 1: Guaranteed by design. Not 100% tested in production. 2 UC5350 ELECTRICAL CHARACTERISTICS (DC Parameters For Recessive State) Unless otherwise stated, the device is disconnected from the bus line; 60 in parallel with 100pF load between CANH and CANL. PARAMETER TEST CONDITIONS MIN TYP MAX UNITS VCANH, VCANL No Load, TXD = 4V (Figure 2) 2 2.5 3 V No Load, TXD = 4V (Figure 2) -500 0 50 mV Differential Output Transmitter (VCANH - VCANL) Differential Input Receiver Common Mode Range = -7V to +12V, -1 0.40 V TXD = 4V, CANH, CANL Externally Driven (Figure 3) Differential Input Resistance No Load 40 k CANH, CANL Input Resistance 20 k UDG-96205 UDG-96204 Valid output of CANH, CANL during recessive state transmission. TXD = LOGIC 1 Valid voltage range of VCANH for sensing dominant bus state as VCANL varies over bus common range mode. TXD = LOGIC1 Figure 2. Recessive State Voltage Diagram Figure 3. Recessive State Voltage Diagram 3 UC5350 ELECTRICAL CHARACTERISTICS (DC Parameters For Dominant State) Unless otherwise stated, the device is disconnected from the bus line; 60 in parallel with 100pF load between CANH and CANL. VCC = 4.5V to 5.5V PARAMETER TEST CONDITIONS MIN TYP MAX UNITS CANH Output Voltage (VCANH) TXD = 1V (Figure 4) 2.75 4.5 V TXD = 1V (Figure 4) 0.50 1.1 2.25 V CANL Output Voltage (VCANL) 1.5 2 3 V Differential Output Transmitter (VCANH - VCANL) TXD = 1V (Figure 4) Common Mode Range = -2 to +7V, TXD = 4V, 0.9 5 V Differential Input Receiver (VDIFF(D)) CANH, CANL Externally Driven (Figure 5) Common Mode Range = -7 to +12V, TXD = 4V, 1.0 5 V CANH, CANL Externally Driven (Figure 5) 12V 5V 4.5V VCANH (MAX) BUS CMR (MAX) 3.5V RANGE OF VCANH (SHADED) 5V VDIFF(D) = 5V (MAX) VCANH (MIN) 2.75V V6,7 = 1.5V (MIN) 2.25V V6,7 = 3V (MAX) 0V VDIFF(D) = 0.9V (MIN) --2V VCANH BUS CMR (MIN) --6.1V VCANL (MAX) 0.5V VCANL (MIN) UDG-97160 VCANL UDG-97161 --7V Valid voltage range of VCANH for sensing dominant bus state as VCANL varies. TXD = LOGIC 0 Valid voltage range of VCANH for sensing dominant bus state as VCANL varies over bus common mode range. TXD = LOGIC 0 Figure 4. Dominant State Voltage Diagram Figure 5. Dominant State Voltage Diagram TRANSMITTER CHARACTERISTICS parallel with 100pF load between CANH and CANL. PARAMETER Differential Output Transmitter (VCANH - VCANL) Delay From TXD to Bus Active TON (TXD) TEST CONDITIONS Dominant Mode Recessive Mode (Figure 6) Delay From TXD to Bus Inactive TOFF (TXD) 60 Across CANH and CANL (Figure 6) Unless otherwise stated, the device is disconnected from the bus line; 60 in MIN 1.5 -500 50 20 TYP 2 MAX UNITS 3 50 100 110 V mV ns ns 4 UC5350 RECEIVER CHARACTERISTICS PARAMETER Differential Input Receiver (VCANH - VCANL) Differential Input Hysteresis Delay From Bus to RXD (TON) Delay From Bus to RXD (TOFF) Unless otherwise stated, the device is disconnected from the bus line; 60 in parallel with 100pF load between CANH and CANL. TEST CONDITIONS Dominant Mode, TXD = 4V Recessive Mode, TXD = 4V TXD = 4V Inactive to Active Bus (Figure 6) Active to Inactive Bus, 60 Across CANH and CANL (Figure 6) 75 150 60 80 100 115 MIN 0.9 0.4 TYP MAX UNITS V V mV ns ns TRANSCEIVER CHARACTERISTICS PARAMETER Loop Time TEST CONDITIONS TON (TXD) + TON (RXD) Inactive to active bus TOFF (TXD) + TOFF (RXD) Active to inactive bus MIN TYP 110 100 MAX UNITS 200 225 ns ns UDG-96208 UDG-96209 Figure 6. Transceiver AC Response Figure 7. Timing Diagram for Schaffner Tests Magnitude Specifications for VS ISO DP7637/1 Up to 150V DIN 40839-1 (Draft) Up to 150V Schaffner NSG500C/506C 40V to 200V 5 UC5350 INPUT 78L05 +VBUS INPUT 78L05 CANH OUTPUT 3 VCC CANH 7 CANH 3 VCC OUTPUT CANH 60 7 +VBUS 60 CANL GND 2 6 GND CANL GND 2 GND 6 CANL CANL Figure 8. Normal Connection Figure 9. Crosswire No. 1 INPUT 78L05 CANH INPUT 78L05 CANL OUTPUT 3 VCC CANH 7 GND 3 VCC OUTPUT CANH 60 7 GND 60 CANL GND 2 6 +VBUS CANL GND 2 CANL 6 +VBUS CANH Figure 10. Crosswire No. 2 Figure 11. Crosswire No. 3 INPUT 78L05 CANH INPUT 78L05 CANL OUTPUT 3 VCC CANH 7 +VBUS 60 3 VCC OUTPUT 60 CANH 7 CANH CANL GND 2 GND 6 CANL CANL GND 2 GND 6 +VBUS Figure 12. Crosswire No. 4 Figure 13. Crosswire No. 5 UNITRODE CORPORATION 7 CONTINENTAL BLVD. * MERRIMACK, NH 03054 TEL. (603) 424-2410 * FAX (603) 424-3460 6 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI's standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. Customers are responsible for their applications using TI components. In order to minimize risks associated with the customer's applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI's publication of information regarding any third party's products or services does not constitute TI's approval, warranty or endorsement thereof. Copyright (c) 2000, Texas Instruments Incorporated |
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