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2470 Datasheet(PDF) 1 Page - Allegro MicroSystems |
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2470 Datasheet(HTML) 1 Page - Allegro MicroSystems |
1 / 4 page 2470 BUS DRIVER / RECEIVER DISCONTINUED PRODUCT — FOR REFERENCE ONL Y ABSOLUTE MAXIMUM RATINGS at TA = 25°C Bus Supply Voltage Range, (VBAT) ......................... -13.5 V to 27 V Logic Supply Voltage Range, (VCC) ............................ -0.3 V to 9.0 V Input Voltage Range, (VBUS) ........................... -3.0 V to 24 V Operating Temperature Range, TA ............................... -40°C to +85°C Junction Temperature Range, TJ ................................ -40°C to 150°C Storage Temperature Range, TS ................................ -65°C to 150°C BUS DRIVER / RECEIVER FUNCTIONAL BLOCK DIAGRAM Rd Rd Td GND VCC VS REXT BUS 6 5 4 7 2 1 3 8 CURRENT LIMIT 22 k Ω 12 Ω 25 Ω 28 V The ULQ2470L and ULQ2470M are bi-directional bus driver / receivers designed specifically for automotive applications. They are intended to be used as an interface between a microprocessor and a single-wire multiplex data bus operating from the A-line or battery. Each device consists of a wave-shaped open-collector driver, a pull-up resistor, and an input filter and buffer. Output driver protection circuitry provides output shutdown if currents in excess of 25 to 30 mA occur. Additionally, over-voltage shutdown occurs when the bus voltage exceeds approximately 22 volts. Dwg. FP-039 FEATURES AND BENEFITS s Over-Voltage Protection s Diode Isolation from both Ground and Supply s Reverse-Battery Protection s Low Supply Current s High Noise Immunity s Output Current Limiting s Low Standby Current—24 mA Max. s Open-Ground Protection s Under-Voltage Lockout 2470 ULQ2470M 1 2 3 45 6 7 8 Rd Rd Td GND VCC VS REXT BUS Dwg. PP-061 Note that the ULQ2470M (DIP) and the ULQ2470L (SOIC) are electrically identical and share a common terminal number assignment. |
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