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| 2985 8-CHANNEL SOURCE DRIVER 2985 8-CHANNEL SOURCE DRIVER Recommended for applications requiring separate logic and load grounds, load supply voltages to 30 V, and load currents to 250 mA, the UDN2985A source driver is used as an interface between standard low-power digital logic and LEDs, relays, and solenoids. The outputs feature saturated transistors for low collector-emitter saturation voltages. The UDN2985A driver is for use with 5 V logic systems--TTL, Schottky TTL, DTL, and CMOS. This device has a minimum output breakdown rating of 30 V with a minimum output sustaining voltage of 15 V. The output is switched ON by an active-high input level. Under normal operating conditions, this device can source up to 120 mA for each of the eight outputs at an ambient temperature of 75C and a supply voltage of 15 V. It incorporates input current-limiting resistors and output transient-suppression diodes. The UDN2985A source driver is supplied in an 18-pin dual in-line package. All inputs are on one side of the package, output pins on the other, to simplify printed wiring board layout. Data Sheet 29310.2A* 1 2 3 4 5 6 7 8 VS 18 17 16 15 14 13 12 11 GND Dwg. No. A-10,243 FEATURES s s s s s TTL, DTL, or CMOS Compatible Inputs 250 mA Output Source Current Capability Output Transient-Suppression Diodes 30 V Minimum Output Breakdown Voltage Low Output-Saturation Voltage ABSOLUTE MAXIMUM RATINGS at TA = 25C Driver Supply Voltage, VS .................. 30 V Continuous Output Current, IOUT ........................................ -250 mA Input Voltage, VIN ............................... 20 V Package Power Dissipation, PD .............................................. 2.2 W* Operating Temperature Range, TA ............................... -20C to +85C Storage Temperature Range, TS ............................... -55C to +150C PARTIAL SCHEMATIC DIAGRAM 1 of 8 DRIVERS Dwg. No. DS-1013 *Derate at the rate of 18 mW/C above TA = 25C. Always order by complete part number: UDN2985A . 2985 8-CHANNEL SOURCE DRIVER ELECTRICAL CHARACTERISTICS at TA = 25C, VS = 30 V (unless otherwise noted). Limits Characteristics Output Leakage Current Output Sustaining Voltage Output Saturation Voltage Symbol ICEX VCE(sus) VCE(SAT) Test Conditions VIN = 0.4 V, VOUT = 0 V lOUT = -120 mA, L = 3 mH VIN = 2.4, lOUT = -60 mA VIN = 2.4, lOUT = -120 mA Input Current Voltage IIN(ON) VIN = 2.4 V VIN = 5.0 V IIN(OFF) Supply Current (outputs open) Clamp Diode Leakage Current Clamp Diode Foward Voltage Turn-On Delay Turn-Off Delay IS IR VF tON tOFF VIN = 0.4 V VS = 30 V, VIN = 2.4 V VR = 30 V, TA = 70C IF = 120 mA Min. -- 15 -- -- -- -- -- -- Typ. <-1.0 -- 0.8 0.9 90 280 10 10 Max. -100 -- 1.1 1.2 225 650 15 15 Units A V V V A A A mA A -- <1.0 50 -- 1.1 2.0 V s s -- -- 0.5 5.0 1.0 10 NOTE: Negative current is defined as coming out of (sourcing) the specified device pin. COMMON-CATHODE LED DRIVER Dwg. No. DS-1014 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright (c) 1984, 1993 Allegro MicroSystems, Inc. 2985 8-CHANNEL SOURCE DRIVER Dimensions in Inches (controlling dimensions) 18 10 0.014 0.008 0.430 0.280 0.240 MAX 0.300 BSC 1 0.070 0.045 0.100 0.920 0.880 BSC 9 0.005 MIN 0.210 MAX 0.015 MIN 0.150 0.115 0.022 0.014 Dwg. MA-001-18A in Dimensions in Millimeters (for reference only) 0.355 0.204 18 10 10.92 7.11 6.10 MAX 7.62 BSC 1 1.77 1.15 2.54 23.37 22.35 BSC 9 0.13 MIN 5.33 MAX 0.39 MIN 3.81 2.93 0.558 0.356 Dwg. MA-001-18A mm NOTES: 1. Exact body and lead configuration at vendor's option within limits shown. 2. Lead spacing tolerance is non-cumulative. 3. Lead thickness is measured at seating plane or below. 2985 8-CHANNEL SOURCE DRIVER POWER SOURCE DRIVERS SELECTION GUIDE IN ORDER OF 1) OUTPUT CURRENT, 2) OUTPUT VOLTAGE, 3) NUMBER OF DRIVERS Output Ratings * mA -25 V 60 60 60 60 60 85 -25 30 50 35 50 50 -50 80 80 -80 # 8 10 12 20 32 8 8 8 8 8 8 8 8 8 8 8 Serial Input Latched Drivers Features Diode Clamp Saturated Outputs Internal Protection -120 -350 - X X X X - - - X - - X - - X - X X X X X - - - X - - X - - X - - Active Pull-Down Active Pull-Down Active Pull-Down Active Pull-Down - X X X X X X X X X X - - - - - - X X X - - - - - - - - - - - - - - - - X - - - - - - Part Number 5815 5810-F and 6809/10 5811 and 6811 5812-F and 6812 5818-F and 6818 6118 2585 2985 5895 2987 2981 and 2982 5891 2580 2983 and 2984 5890 2588 * Current is maximum specified test condition, voltage is maximum rating. See specification for sustaining voltage limits or over-current protection voltage limits. Complete part number includes additional characters to indicate operating temperature range and package style. Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications 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 infringements of patents or other rights of third parties which may result from its use. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 |
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