UC5350 PRELIMINARY CAN Transceiver DESCRIPTION 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 –40°C to +85°C • Unitrode DeviceNet ID#107 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, –40°C to +85°C 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 Output Mode High Speed High Speed High Speed Standby Dominant Recessive Recessive Outputs VCANH - VCANL 1.5V to 3V –120mV to +12mV –120mV to +12mV High Z 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 . . . . . . . . . . . . . . . . . . –40°C to +85°C Storage Temperature . . . . . . . . . . . . . . . . . . . –65°C to +150°C Junction Temperature . . . . . . . . . . . . . . . . . . . –55°C to +150°C Lead Temperature (Soldering, 10 sec.) . . . . . . . . . . . . . +300°C Crosswire Protection Maximum VBUS . . . . . . . . . . . . . . . . 30V Bus Differential Voltage* . . . . . . . . . . . . . . . . . . . . . . . . . . . 30V Cross Wire Protection TA . . . . . . . . . . . . . . . . . –40°C to 125°C 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 in parallel with 100pF load between CANH and CANL; TA = –40°C to +85°C, TA = TJ PARAMETER TEST CONDITIONS Supply Voltage Supply Current MIN 4.5 Standby, RS = 4V RS Input Current Standby RS Voltage Input = Logic 0 High Speed Transmitter Voltage Input = Logic 1 Transmitter Output Recessive Transmitter Voltage Input = Logic 0 Transmitter Output Dominant Transmitter Current Input at Logic 1 TXD = 4V V mA 9 14 mA 1.2 2.0 mA 5 µA 0.75VCC V 0.3VCC Transmitter Current Input at Logic 0 TXD = 1V Receiver Voltage Output = Logic 1 RXD = –100µA, TXD = 4V UNITS 70 –10 RS Voltage Input = Logic 1 MAX 5.5 Dominant, TXD = 1V Recessive, TXD = 4V Receiver Voltage Output = Logic 0 TYP 0.7VCC V V –30 0.3VCC V 30 µA 30 µA VCC –1.25 V RXD = 1mA, TXD = 1V 0.75 1.2 V RXD = 10mA, TXD = 1V 1.2 1.7 V CANH, CANL Input Resistance No Load, TXD = 4V 20 40 kΩ Differential Input Resistance No Load, TXD = 4V 40 80 kΩ CANH, CANL Input Capacitance (Note 1) 20 pF Differential Input Capacitance (Note 1) 10 pF Reference Output Voltage VREF = ±50µA 0.55VCC V 0.45VCC 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; 60Ω 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 kΩ CANH, CANL Input Resistance 20 kΩ UDG-96205 Valid voltage range of VCANH for sensing dominant bus state as VCANL varies over bus common range mode. TXD = LOGIC1 UDG-96204 Valid output of CANH, CANL during recessive state transmission. TXD = LOGIC 1 Figure 3. Recessive State Voltage Diagram Figure 2. 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 BUS CMR (MAX) VCANH (MAX) RANGE OF VCANH (SHADED) 3.5V VDIFF(D) = 5V (MAX) 5V VCANH (MIN) 2.75V ∆ V6,7 = 1.5V (MIN) 2.25V 0V VDIFF(D) = 0.9V (MIN) ∆ V6,7 = 3V (MAX) —2V VCANL (MAX) VCANH BUS CMR (MIN) —6.1V 0.5V VCANL —7V VCANL (MIN) UDG-97161 UDG-97160 Valid voltage range of VCANH for sensing dominant bus state as VCANL varies over bus common mode range. TXD = LOGIC 0 Valid voltage range of VCANH for sensing dominant bus state as VCANL varies. TXD = LOGIC 0 Figure 4. Dominant State Voltage Diagram Figure 5. Dominant State Voltage Diagram Unless otherwise stated, the device is disconnected from the bus line; 60Ω in TRANSMITTER CHARACTERISTICS parallel with 100pF load between CANH and CANL. PARAMETER Differential Output Transmitter (VCANH - VCANL) Delay From TXD to Bus Active TON (TXD) MIN TYP Dominant Mode TEST CONDITIONS 1.5 2 Recessive Mode –500 (Figure 6) Delay From TXD to Bus Inactive TOFF (TXD) 60Ω Across CANH and CANL (Figure 6) 4 MAX UNITS 3 V 50 mV 50 100 ns 20 110 ns UC5350 RECEIVER CHARACTERISTICS Unless otherwise stated, the device is disconnected from the bus line; 60Ω in parallel with 100pF load between CANH and CANL. PARAMETER Differential Input Receiver (VCANH - VCANL) TEST CONDITIONS MIN Dominant Mode, TXD = 4V TYP V Recessive Mode, TXD = 4V Differential Input Hysteresis MAX UNITS 0.9 0.4 TXD = 4V 75 V 150 mV Delay From Bus to RXD (TON) Inactive to Active Bus (Figure 6) 60 100 ns Delay From Bus to RXD (TOFF) Active to Inactive Bus, 60Ω Across CANH and CANL (Figure 6) 80 115 ns TRANSCEIVER CHARACTERISTICS PARAMETER Loop Time TEST CONDITIONS MIN TYP MAX UNITS TON (TXD) + TON (RXD) Inactive to active bus 110 200 ns TOFF (TXD) + TOFF (RXD) Active to inactive bus 100 225 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 5 DIN 40839-1 (Draft) Up to 150V Schaffner NSG500C/506C 40V to 200V UC5350 INPUT INPUT +VBUS 78L05 CANH 78L05 OUTPUT OUTPUT 3 3 VCC VCC CANH 7 CANH CANH +VBUS 7 60Ω CANL 6 60Ω CANL CANL GND GND 2 2 GND 6 CANL Figure 8. Normal Connection Figure 9. Crosswire No. 1 INPUT INPUT CANH 78L05 GND CANL 78L05 OUTPUT OUTPUT 3 3 VCC VCC CANH 7 GND CANH 7 GND 60Ω CANL 6 60Ω +VBUS CANL GND GND 2 2 CANL CANH Figure 10. Crosswire No. 2 Figure 11. Crosswire No. 3 INPUT INPUT CANH 78L05 6 +VBUS CANL 78L05 OUTPUT OUTPUT 3 60Ω 3 60Ω VCC CANH 7 CANL 6 VCC +VBUS CANL GND GND 2 2 GND CANH 7 CANL 6 CANH +VBUS GND 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