AND8369/D Differences Between 5V and 3.3V Version of CAN LSFT http://onsemi.com AMIS has two versions of the CAN low speed fault tolerant transceiver, namely: AMIS−41682 Full 5 V Version APPLICATION NOTE • • AMIS−41683 Version with 3.3 V Interfacing Towards CAN Controller. Both products are based on the same product specification and IP blocks. A detailed general block diagram applicable for both versions is shown in Figure 1. VBAT INH 1 VCC 10 14 Vcc ( * ) POR STB EN WAKE Mode & wake−up − control 5 6 9 7 11 Vcc ( * ) TxD GND ERR Thermal shutdown Driver control 12 8 2 Timer RTL CANH CANL RTH 13 4 Failure handling Receiver Filter 3 RxD AMIS −4168x ( * ) For AMIS−41682 pull up to Vcc . For AMIS −41683 pull up to Vcc /2 ÏÏ ÏÏ ÏÏ ÏÏ ÏÏ AMIS −41683 AMIS −41682 4 VCC ERR 4 ERR Failure 3 VCC RxD 3 RxD PC20050610 .3 © Semiconductor Components Industries, LLC, 2009 January, 2009 − Rev. 2 Failure handling handling Figure 1. Block Diagrams 1 Publication Order Number: AND8369/D AND8369/D More detailed drawings on the difference between these two versions are marked in the drawing below. They are implemented purely by a partial metal−mask change of the same production mask−set. Parts of the silicon other than those drawn in Figure 2 are identical for both products: AMIS −41682 AMIS −41683 VCC VCC STB STB TxD TxD Vcc / 2 EN Vcc / 2 EN 4 ERR 3 RxD 4 ERR 3 RxD Figure 2. Differences in Digital Input and Output Stage Between AMIS−41682 and AMIS41683 TYPICAL APPLICATION DIAGRAMS OUT 5V−reg IN VCC INH VBAT 10 1 14 CAN controller EN 6 ERR 4 STB 5 RxD 3 TxD 2 12 GND * optional 11 4.7 kW IN 5 V −reg VBAT 4.7 kW VCC VCC INH 1 10 CANL EN 6 ERR 4 STB 5 RxD 3 TxD 2 CANH 3.3V CAN controller 8 RTH GND PC20050610.2 OUT * WAKE 7 9 RTL AMIS−41683 13 IN VBAT * VCC OUT 3 .3 V − reg CAN BUS LINE VBAT 14 12 AMIS−41682 11 GND GND PC20050610.1 Figure 3. Typical Application Diagrams http://onsemi.com 2 CANL CANH 8 RTH 13 * optional WAKE 7 9 RTL CAN BUS LINE AND8369/D Electrical Parameters The characteristics listed in the following tables are the only ones that are specific for either version of the chip. AMIS−41682 (5V version) Table 1. CHARACTERISTICS OF AMIS−41682 (5 V VERSION) Symbol Parameter Conditions Min Typ Max Unit PINS STB−B, EN AND TXD VIH High−Level Input Voltage 0.7 x VCC 6.0 V VIL Low−Level Input Voltage −0.3 0.3 x VCC V I−PU−H High−Level Input Current Pin TXD TXD = 0.7 * VCC −10 −200 mA I−PU−L Low−Level Input Current Pin TXD TXD = 0.3 * VCC −80 −800 mA VCC − 0.9 VCC V PINS RXD AND ERR−B VOH High−Level Output Voltage lsource = −1 mA VOL Low−Level Output Voltage Isink = 1.6 mA 0 0.4 V Isink = 7.5 mA 0 1.5 V Max Unit 6.0 V AMIS−41683 (3.3 V VERSION) Table 2. CHARACTERISTICS OF AMIS−41683 (3.3V VERSION) Symbol Parameter Conditions Min Typ PINS STB−B, EN AND TXD VIH High−Level Input Voltage 2 VIL Low−Level Input Voltage I−PU−H High−Level Input Current Pin TXD −0.3 TXD = 2 V 0.8 −10 V mA PINS RXD AND ERR−B VOL Low−Level Output Voltage Open Drain lsink = 3.2 mA Ileak Leakage When Driver is Off VERR−B = VRXD = 5 V BATTERY + 5V ERR STB RxD 20 pF TxD VBAT WAKE 14 7 9 6 4 5 12 AMIS −4168x 11 3 2 8 13 R1 C1 RTL 500W EN INH 1 10k W CANL C3 CANH RTH 5 00 W VCC 10 V Common R2 GND 10 k W C2 Mode voltage PC20050511.1 Figure 4. Test Setup All other characteristics can be found in the datasheet and are identical for both transceivers. http://onsemi.com 3 0.4 V 1 mA AND8369/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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