AND8375/D AMIS-3066x - Difference Between 5 V and 3.3 V Versions http://onsemi.com APPLICATION NOTE Introduction V CC ON Semiconductor has two versions of the AMIS−3066x CAN high speed transceiver: • AMIS−30660 full 5 V version • AMIS−30663 version with 3.3 V interfacing towards CAN controller The AMIS−30663 is a derivative of the AMIS−30660 silicon, with minor modifications at metal level. This application note describes the differences between the two products. 3 Thermal shutdown V33 7 TxD V33 Timer 1 ’S’ 8 AMIS−30663 RxD VREF DIFFERENCES BETWEEN AMIS−30660 AND AMIS−30663 4 6 Driver control CANH CANL Ri(cm) COMP Vcc / 2 + VCC Ri(cm) 5 2 PC20041012.1 Block Diagrams GND Figure 2. AMIS−30663 Block Diagram Both products are based on the same product specification and IP blocks. Detailed general block diagrams are shown in and Figures 1 and 2. Pinout Differences V CC S 3 8 VCC TxD 1 7 Driver control Timer 6 CANH CANL TxD 1 GND 2 VCC 3 RxD 4 AMIS− 30663 Thermal shutdown COMP Ri(cm) 5 Vcc /2 + Ri(cm) 2 PC20040918.1 GND January, 2009 − Rev. 2 CANH 6 CANL 5 VREF 1 GND 2 VCC 3 RxD 4 8 S 7 CANH 6 CANL 5 VREF PC20040918.3 Figure 1. AMIS−30660 Block Diagram © Semiconductor Components Industries, LLC, 2009 TxD AMIS− 30660 VREF 4 V33 7 PC20040918.8 AMIS−30660 RxD 8 1 Publication Order Number: AND8375/D AND8375/D Table 1. PIN DESCRIPTION Pin AMIS−30660 AMIS−30663 Description 1 TxD TxD Transmit Data Input; Low Input → Dominant Driver; Internal Pullup Current 2 GND GND Ground 3 VCC VCC Supply Voltage 4 RxD RxD Receive Data Output; Dominant Transmitter → Low Output 5 VREF VREF Reference Voltage Output 6 CANL CANL LOW−Level CAN Bus Line (Low in Dominant Mode) 7 CANH CANH HIGH−Level CAN Bus Line (High in Dominant Mode) 8 S V33 Select Input for High Speed or Silent Mode; Internal Pulldown Current 3.3 V Supply for Digital I/O 3.3 V Interface The pin number 8 is a digital CMOS input pin (standby) on the AMIS−30660 device and is the I/O supply pin called V33 for pin RxD on the AMIS−30663 product. Internally, on AMIS−30663, the stand−by signal is forced to ground. This means Pin 8 must be properly decoupled in application and treated as a supply pin while performing ESD and latch−up tests. The pullup on Pin TxD is connected via protection diode to V33 and not to 5 V supply as in the AMIS−30660. The AMIS−30663 may be used to interface with 3.3 V or 5 V controllers by using the V33 Pin. This pin may be supplied with 3.3 V or 5 V to correspond with digital interface voltage levels. ELECTRICAL CHARACTERISTICS Table 2. AMIS−30660 (5 V VERSION) Symbol Parameter Conditions Min Typ 0.6 x VCC 0.75 x VCC Max Unit RECEIVER DATA OUTPUT (Pin RxD) VOH HIGH−Level Output Voltage IRXD = −10 mA VOL LOW−Level Output Voltage IRXD = 6 mA V 0.25 0.45 V TRANSMITTER DATA INPUT (Pin TxD) IIH HIGH−Level Input Current VTxD = VCC −1 0 +1 mA IIL LOW−Level Input Current VTxD = 0 V −75 −200 −350 mA Table 3. AMIS−30663 (3.3 V VERSION) Symbol Parameter Conditions Min Typ 0.7 x V33 0.75 x V33 Max Unit RECEIVER DATA OUTPUT (Pin RxD) VOH HIGH−Level Output Voltage IRXD = −10 mA VOL LOW−Level Output Voltage IRXD = 5 mA V 0.18 0.35 V TRANSMITTER DATA INPUT (Pin TxD) IIH HIGH−Level Input Current VTxD = V33 −1 0 +1 mA IIL LOW−Level Input Current VTxD = 0 V −50 −200 −300 mA http://onsemi.com 2 AND8375/D VBAT IN 5V−reg 60 W OUT 47 nF VCC VCC S RxD CAN controller TxD 3 8 CANH 7 AMIS− 4 30660 6 1 VREF 5 GND CAN BUS CANL 60 W 60 W 2 PC20040918.2 60 W GND 47 nF Figure 3. Typical Application Schematic for the AMIS−30660 VBAT IN 5V−reg 60 W OUT 60 W 47 nF 3.3V− OUT reg IN VCC VCC V33 8 RxD 3 4 CAN 7 AMIS− controller TxD 30663 5 6 1 CANH VREF CANL 2 PC20040919.1 GND CAN BUS 60 W 60 W GND 47 nF Figure 4. Typical Application Schematic for the AMIS−30663 TIMING CHARACTERISTICS Table 4. AMIS−30660 TIMING CHARACTERISTICS Symbol Parameter Conditions Min Typ Max Unit td(TxD−BUSon) Delay TxD to Bus Active Vs = 0 V 40 85 130 ns td(TxD−BUSoff) Delay TxD to Bus Inactive Vs = 0 V 30 60 105 ns td(BUSon−RxD) Delay Bus Active to RxD Vs = 0 V 25 55 105 ns td(BUSoff−RxD) Delay Bus Inactive to RxD Vs = 0 V 65 100 135 ns tpd(rec−dom) Propagation Delay TxD to RxD from Recessive to Dominant Vs = 0 V 70 230 ns td(dom−rec) Propagation Delay TxD to RxD from Dominant to Recessive Vs = 0 V 100 245 ns Table 5. AMIS−30663 TIMING CHARACTERISTICS Min Typ Max Unit td(TxD−BUSon) Symbol Delay TxD to Bus Active Parameter 40 85 110 ns td(TxD−BUSoff) Delay TxD to Bus Inactive 30 60 110 ns td(BUSon−RxD) Delay Bus Active to RxD 25 55 110 ns td(BUSoff−RxD) Delay Bus Inactive to RxD 65 100 135 ns tpd(rec−dom) Propagation Delay TxD to RxD from Recessive to Dominant 100 230 ns td(dom−rec) Propagation Delay TxD to RxD from Dominant to Recessive 100 245 ns Table 6. SUPPLY VOLTAGE TO V33 PIN Symbol Parameter Conditions Min Max Unit V33 I/O Interface Voltage Absolute Maximum Range −0.3 +7 V V33 I/O Interface Voltage Operating Range of V33 V Pin 2.9 3.6 V All other characteristics can be found in the data sheet and are identical for both versions. http://onsemi.com 3 AND8375/D ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. 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