2470 ALLEGRO
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Technical content
DISCONTINUED PRODUCT— FOR REFERENCE ONLY ABSOLUTE MAXIMUM RATINGS at TA = 25°C Bus Supply Voltage Range, Logic Supply Voltage Range, Input Voltage Range, Operating Temperature Range, Junction Temperature Range, Storage Temperature Range, BUS DRIVER / RECEIVER FUNCTIONAL BLOCK DIAGRAM R d R d Td GND VCC VS R EXT BUS CURRENT LIMIT 22 kW 12 W 25 W 28 V Data Sheet 27463 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 n Over-Voltage Protection n Diode Isolation from both Ground and Supply n Reverse-Battery Protection n Low Supply Current n High Noise Immunity n Output Current Limiting n Low Standby Current—24 mA Max. n Open-Ground Protection n Under-Voltage Lockout 2470 ULQ2470M 8Rd Rd Td GND VCC VS R EXT BUS Dwg. PP-061 Note that the ULQ2470M (DIP) and the ULQ2470L (SOIC) are electrically identical and share a common terminal number assignment.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000 ULQ2470L Dimensions in Inches (for reference only) Dimensions in Millimeters (controlling dimensions) 0° TO 8° 0.1968 0.1890 0.2440 0.2284 0.050 0.016 Dwg. MA-007-8 in 0.050 BSC 0.0098 0.0075 0.1574 0.1497 0.020 0.013 0.0688 0.0532 0.0040 MIN. Copyright © 1995, Allegro MicroSystems, Inc. 0° TO 8° 5.00 4.80 6.20 5.80 1.27 0.40 Dwg. MA-007-8 mm 1.27 BSC 0.25 0.19 4.00 3.80 0.51 0.33 1.75 1.35 0.10 MIN. NOTES: 1. Lead spacing tolerance is non-cumulative. 2. Exact body and lead configuration at vendor’s option within limits shown.
NOTES: 1. Leads 1, 4, 5, and 8 may be half leads at vendor’s option. 2. Lead thicjkness is measured at seating plane or below. 3. Lead spacing tolerance is non-cumulative. 4. Exact body and lead configuration at vendor’s option within limits shown. ULQ2470M Dimensions in Inches (controlling dimensions) Dimensions in Millimeters (for reference only) 0.014 0.008 0.300 BSC Dwg. MA-001-8A in 0.430 MAX 0.100 BSC 0.022 0.014 0.400 0.355 0.005 MIN 0.150 0.115 0.280 0.240 0.210 MAX 0.070 0.0450.015 MIN 0.355 0.204 7.62 BSC Dwg. MA-001-8A mm 10.92 MAX 10.16 9.02 2.54 BSC 0.13 MIN 3.81 2.93 7.11 6.10 5.33 MAX 1.77 1.150.39 MIN 0.558 0.356
Worcester, Massachusetts 01615-0036 (508) 853-5000 Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifica- tions as may be required to permit improvements in the design of its products. The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no responsibility for its use; nor for any infringe- ments of patents or other rights of third parties which may result from its use.