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MAX3053 Datasheet(PDF) 10 Page - Maxim Integrated Products |
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MAX3053 Datasheet(HTML) 10 Page - Maxim Integrated Products |
10 / 12 page Additionally, a current-limiting circuit protects the trans- mitter output stage against a short circuit to positive and negative battery voltage. Although the power dissipation increases during this fault condition, this feature prevents destruction of the transmitter output stage. Applications Information Reduced EMI and Reflections In slope control mode, the CANH, CANL outputs are slew-rate limited, minimizing EMI and reducing reflections caused by improperly terminated cables. In general, a transmitter’s rise time relates directly to the length of an unterminated stub, which can be driven with only minor waveform reflections. The following equation expresses this relationship conservatively: Length = tRISE / (10 x 1.5ns/ft) where tRISE is the transmitter’s rise time. See Figures 5, 6, and 7 for typical waveforms at various data rates. The MAX3053 requires no special layout considerations beyond common practices. Bypass VCC to GND with a 1μF ceramic capacitor mounted close to the IC with short lead lengths and wide trace widths. Figure 5. Output Bus in Slope Control Mode at 62.5kbps Figure 7. Output Bus High-Speed Mode at 2Mbps Figure 6. Output Bus in Slope Control Mode at 500kbps CANH–CANL 5V/div FFT 200mV/div 4.00µs 31.5kHz RRS = 180kΩ CANH–CANL 5V/div FFT 200mV/div 100ns 1MHz RRS = 0Ω CANH–CANL 5V/div FFT 200mV/div 400ns 250kHz RRS = 24kΩ 1 2 3 4 8 7 6 5 RS CANH CANL SHDN RXD VCC GND TXD SO TOP VIEW MAX3053 MAX3053 ±80V Fault-Protected, 2Mbps, Low Supply Current CAN Transceiver www.maximintegrated.com Maxim Integrated │ 10 Chip Information TRANSISTOR COUNT: 1214 PROCESS: BiCMOS Pin Configuration |
Similar Part No. - MAX3053_14 |
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Similar Description - MAX3053_14 |
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