LM111, LM211, LM311, LM311Y DIFFERENTIAL COMPARATORS WITH STROBES SLCS007A - SEPTEMBER 1973 - REVISED FEBRUARY 1992 D D D D D D Fast Response Times Strobe Capability Maximum Input Bias Current . . . 300 nA Maximum Input Offset Current . . . 70 nA Can Operate From Single 5-V Supply Designed to Be Interchangeable With National Semiconductor LM111, LM211, and LM311 LM111 . . . J PACKAGE (TOP VIEW) NC EMIT OUT IN + IN - NC VCC - BALANCE 1 14 2 13 3 12 4 11 5 10 6 9 7 8 NC NC NC VCC + NC COL OUT BAL/STRB description The LM111 is characterized for operation over the full military range of - 55C to 125C. The LM211 is characterized for operation from - 40C to 85C, and the LM311 is characterized for operation from 0C to 70C. LM111 . . . JG PACKAGE LM211, LM311 . . . D, DB, P, OR PW PACKAGE (TOP VIEW) EMIT OUT IN + IN - VCC - EMIT OUT IN + IN - NC VCC - - COL OUT EMIT OUT 3 6 4 5 VCC + COL OUT BAL/STRB BALANCE *2 1 10 3 8 4 7 5 6 VCC + COL OUT NC BAL/STRB BALANCE 9 NC IN + NC IN - NC 4 3 2 1 20 19 18 5 17 6 16 7 15 8 14 9 10 11 12 13 NC COL OUT NC BAL/STRB NC NC VCC - NC BALANCE NC IN- + 7 LM111 . . . FK PACKAGE (TOP VIEW) BALANCE IN+ 8 2 LM111 . . . U PACKAGE (TOP VIEW) functional block diagram BAL/STRB 1 NC EMIT OUT NC VCC + NC The LM111, LM211, and LM311 are single high-speed voltage comparators. These devices are designed to operate from a wide range of power supply voltages, including 15-V supplies for operational amplifiers and 5-V supplies for logic systems. The output levels are compatible with most TTL and MOS circuits. These comparators are capable of driving lamps or relays and switching voltages up to 50 V at 50 mA. All inputs and outputs can be isolated from system ground. The outputs can drive loads referenced to ground, VCC + or VCC -. Offset balancing and strobe capabilities are available, and the outputs can be wire-OR connected. If the strobe is low, the output will be in the off state regardless of the differential input. Copyright 1992, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 1 LM111, LM211, LM311, LM311Y DIFFERENTIAL COMPARATORS WITH STROBES SLCS007A - SEPTEMBER 1973 - REVISED FEBRUARY 1992 AVAILABLE OPTIONS PACKAGED DEVICES TA VIOmax at 25C SMALL OUTLINE (D) SSOP (DB) 0C to 70C 7.5 mV LM311D LM311DBLE 3 mV LM211D - 40C to 85C CHIP CERAMIC CARRIER DIP (FK) (J) CERAMIC DIP (JG) PLASTIC DIP (P) TSSOP (PW) LM311P LM311PWLE FLATPACK (U) CHIP FORM (Y) LM311Y LM211P - 55C to 3 mV LM111FK LM111J LM111JG LM111U 125C The D package is available taped and reeled. Add the suffix R (e.g., LM311DR). The DB and PW packages are only available left-end taped and reeled. schematic BAL/STRB 300 BALANCE 300 VCC + 1.3 k 750 1.3 k 600 70 1.2 k IN + 1.2 k 4 k COL OUT IN - 400 130 60 450 250 600 200 2 k 4 EMIT OUT VCC - Component Count All resistor values shown are nominal. 2 Resistors Diodes Epifet Transistors POST OFFICE BOX 655303 20 2 1 22 * DALLAS, TEXAS 75265 LM111, LM211, LM311, LM311Y DIFFERENTIAL COMPARATORS WITH STROBES SLCS007A - SEPTEMBER 1973 - REVISED FEBRUARY 1992 LM311Y chip information This chip, when properly assembled, displays characteristics similar to the LM311. Thermal compression or ultrasonic bonding may be used on the doped-aluminum bonding pads. Chips may be mounted with conductive epoxy or a gold-silicon preform. BONDING PAD ASSIGNMENTS (1) (8) VCC+ (8) (5) BALANCE (7) IN+ IN- (2) BAL/STRB COL OUT (7) (2) + (3) - (6) 62 (4) (1) VCC - EMIT OUT (3) CHIP THICKNESS: 15 TYPICAL BONDING PADS: 4 x 4 MINIMUM (4) (5) (6) TJ max = 150C TOLERANCES ARE 10%. 50 ALL DIMENSIONS ARE IN MILS. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 3 LM111, LM211, LM311, LM311Y DIFFERENTIAL COMPARATORS WITH STROBES SLCS007A - SEPTEMBER 1973 - REVISED FEBRUARY 1992 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage, VCC+ (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V Supply voltage, VCC- (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 18 V Supply voltage, VCC+ - VCC- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 V Differential input voltage, VID (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 V Input voltage, VI (either input, see Notes 1 and 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 V Voltage from emitter output to VCC - . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 V Voltage from collector output to VCC - : LM111 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 V LM211 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 V LM311 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 V Duration of output short circuit (see Note 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 s Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Operating free-air temperature range, TA: LM111 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 55C to 125C LM211 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 40C to 85C LM311 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0C to 70C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65C to 150C Case temperature for 60 seconds: FK package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: J, JG, or U package . . . . . . . . . . . . . 300C Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: D, DB, P, or PW package . . . . . . . . 260C Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. All voltage values, unless otherwise noted, are with respect to the midpoint between VCC+ and VCC- . 2. Differential voltages are at IN+ with respect to IN -. 3. The magnitude of the input voltage must never exceed the magnitude of the supply voltage or 15 V, whichever is less. 4. The output may be shorted to ground or either power supply. DISSIPATION RATING TABLE PACKAGE TA 25C POWER RATING DERATING FACTOR DERATE ABOVE TA 64C TA = 70C POWER RATING TA = 85C POWER RATING TA = 125C POWER RATING D 500 mW 5.8 mW/C 464 mW 377 mW - DB or PW 500 mW 4.2 mW/C 31C 336 mW - - FK 500 mW 11.0 mW/C 105C 500 mW 500 mW 275 mW J 500 mW 11.0 mW/C 105C 500 mW 500 mW 275 mW JG 500 mW 8.4 mW/C 90C 500 mW 500 mW 210 mW P 500 mW 8.0 mW/C 88C 500 mW 500 mW - U 500 mW 5.4 mW/C 57C 432 mW 351 mW 135 mW recommended operating conditions Supply voltage, VCC + - VCC - Input voltage ( | VCC | 15 V) 4 MAX 3.5 30 VCC- + 0.5 - 55 LM111 Operating free-air temperature range, TA MIN VCC+ -1.5 125 LM211 - 40 85 LM311 0 70 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 UNIT V V C LM111, LM211, LM311, LM311Y DIFFERENTIAL COMPARATORS WITH STROBES SLCS007A - SEPTEMBER 1973 - REVISED FEBRUARY 1992 electrical characteristics at specified free-air temperature, VCC = 15 V (unless otherwise noted) PARAMETER Input offset voltage See Note 5 IIO Input offset current See Note 5 IIB Input bias current VO = 1 V to 14 V IIL(S) Low-level strobe current (see Note 6) V(strobe) = 0.3 V, VICR Common-mode input voltage range AVD Large-signal differential voltage amplification IOH High-level Hi hl l ((collector) ll t ) output out ut current VOL 25C 4 3 25C I(strobe) = -3 mA, VID = 5 mV, 75 10 6 100 100 -3 13.8 to - 14.7 40 200 40 200 VCC+ = 4.5 V, VCC 0, CC- = 0 IOL = 8 mA VID = - 6 mV Full range VID = - 10 mV Full range mV nA nA mA V V/mV 10 nA A 0.2 50 0.75 1.5 nA 1.5 25C 0.23 UNIT 0.5 25C 0.75 250 300 13 to - 14.5 0.2 50 70 13.8 to - 14.7 Full range 25C 7.5 13 to - 14.5 25C VID = - 5 mV VID = - 10 mV 2 10 -3 25C VOH = 35 V VOH = 35 V MAX 150 25C RL = 1 k LM311 TYP 20 Full range VID - 10 mV MIN 4 Full range VO = 5 V to 35 V, IOL = 50 mA 0.7 Full range Full range VID = 5 mV, LM111, LM211 TYP MAX MIN 25C VIO Low-level (collector-to-emitter) out ut voltage output TA TEST CONDITIONS V 0.4 0.23 0.4 ICC + Supply current from VCC +, output low VID = - 10 mV, No load 25C 5.1 6 5.1 7.5 mA ICC - Supply current from VCC -, output high VID = 10 mV, No load 25C - 4.1 -5 - 4.1 -5 mA Unless otherwise noted, all characteristics are measured with BALANCE and BAL/STRB open and the emitter output grounded. Full range for LM111 is - 55C to 125C, for LM211 is - 40C to 85C, and for LM311 is 0C to 70C. All typical values are at TA = 25C. NOTES: 5. The offset voltages and offset currents given are the maximum values required to drive the collector output up to 14 V or down to 1 V with a pullup resistor of 7.5 k to VCC +. These parameters actually define an error band and take into account the worst-case effects of voltage gain and input impedance. 6. The strobe should not be shorted to ground; it should be current driven at - 3 mA to - 5 mA (see Figures 13 and 27). switching characteristics, VCC = 15 V, TA = 25C PARAMETER Response time, low-to-high-level output Response time, high-to-low-level output LM111, LM211, LM311 TEST CONDITIONS RC = 500 to 5 V V, CL = 5 pF, pF MIN See Note 7 TYP MAX UNIT 115 ns 165 ns NOTE 7: The response time specified is for a 100-mV input step with 5-mV overdrive and is the interval between the input step function and the instant when the output crosses 1.4 V. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 5 LM111, LM211, LM311, LM311Y DIFFERENTIAL COMPARATORS WITH STROBES SLCS007A - SEPTEMBER 1973 - REVISED FEBRUARY 1992 electrical characteristics at VCC = 15 V (unless otherwise noted) LM311Y TEST CONDITIONS PARAMETER MIN TYP MAX UNIT VIO IIO Input offset voltage See Note 5 2 7.5 mV Input offset current See Note 5 6 50 nA IIB IIL(S) Input bias current VO = 1 V to 14 V V(strobe) = 0.3 V, 100 250 VICR Common-mode input voltage range AVD IOH Large-signal differential voltage amplification VOL Low-level strobe current (see Note 6) VID - 10 mV VO = 5 V to 35 V, Istrobe = - 3 mA, RL = 1 k High-level (collector) output current Low-level (collector-to-emitter) output voltage IOL = 50 mA, VID = - 10 mV VID = 5 mV, -3 13 to - 14.5 13.8 to - 14.7 40 200 VOH = 35 V nA mA V V/mV 0.2 50 nA 0.75 1.5 V ICC + Supply current from VCC +, output low VID = - 10 mV, No load 5.1 7.5 mA ICC - Supply current from VCC -, output low VID = 10 mV, No load - 4.1 -5 mA Unless otherwise noted, all characteristics are measured with BALANCE and BAL/STRB open and the emitter output grounded. NOTES: 5. The offset voltages and offset currents given are the maximum values required to drive the collector output up to 14 V or down to 1 V with a pullup resistor of 7.5 k to VCC +. These parameters actually define an error band and take into account the worst-case effects of voltage gain and input impedance. 6. The strobe should not be shorted to ground; it should be current driven at - 3 mA to - 5 mA (see Figures 13 and 27). switching characteristics, VCC = 15 V, TA = 25C PARAMETER Response time, low-to-high-level output Response time, high-to-low-level output LM311Y TEST CONDITIONS RC = 500 to 5 V V, CL = 5 pF, pF MIN See Note 7 TYP MAX UNIT 115 ns 165 ns NOTE 7: The response time specified is for a 100-mV input step with 5-mV overdrive and is the interval between the input step function and the instant when the output crosses 1.4 V. 6 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 LM111, LM211, LM311, LM311Y DIFFERENTIAL COMPARATORS WITH STROBES SLCS007A - SEPTEMBER 1973 - REVISED FEBRUARY 1992 TYPICAL CHARACTERISTICS INPUT OFFSET CURRENT vs FREE-AIR TEMPERATURE 20 500 VCC = 15 V VO = 1 V to 14 V See Note A 18 VCC = 15 V VO = 1 V to 14 V See Note A LM311 450 400 16 14 LM111 LM211 I IB - Input Bias Current - nA I IO - Input Offset Current - nA INPUT BIAS CURRENT vs FREE-AIR TEMPERATURE LM311 12 10 Condition 1 Condition 2 8 6 LM311 4 LM111 LM211 2 0 - 60 - 40 - 20 0 20 350 300 250 60 150 LM311 Condition 1 100 LM111 LM211 0 - 60 - 40 - 20 80 100 120 140 Condition 2 200 50 40 LM111 LM211 0 20 40 60 80 100 120 140 TA - Free-Air Temperature - C TA - Free-Air Temperature - C Figure 2 Figure 1 NOTE A: Condition 1 is with BALANCE and BAL/STRB open. Condition 2 is with BALANCE and BAL/STRB connected to VCC +. VCC+ = 30 V VOLTAGE TRANSFER CHARACTERISTICS 60 VO - Output Voltage - V 50 VCC+ = 30 V VCC - = 0 TA = 25C 1 k LM111 LM211 Output VID LM311 VCC- 40 30 COLLECTOR OUTPUT TRANSFER CHARACTERISTIC TEST CIRCUIT FOR FIGURE 3 Collector Output RL = 1 k Emitter Output RL = 600 VI = 50 V (LM111, LM211) 40 V (LM311) VCC+ = 30 V 20 VID 10 Output 600 0 -1 VCC- - 0.5 0 0.5 1 VID - Differential Input Voltage - mV EMITTER OUTPUT TRANSFER CHARACTERISTIC TEST CIRCUIT FOR FIGURE 3 Figure 3 Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 7 LM111, LM211, LM311, LM311Y DIFFERENTIAL COMPARATORS WITH STROBES SLCS007A - SEPTEMBER 1973 - REVISED FEBRUARY 1992 TYPICAL CHARACTERISTICS 100 mV VCC = 15 V RC = 500 to 5 V TA = 25C 5 4 3 2 5 mV 2 mV 20 mV 1 0 0 50 100 150 200 250 Differential Input Voltage OUTPUT RESPONSE FOR VARIOUS INPUT OVERDRIVES VO - Output Voltage - V VO - Output Voltage - V Differential Input Voltage OUTPUT RESPONSE FOR VARIOUS INPUT OVERDRIVES 300 350 100 mV VCC = 15 V RC = 500 to 5 V TA = 25C 5 4 20 mV 3 2 0 0 t - Time - ns 50 100 150 200 t - Time - ns Figure 4 Figure 5 VCC + = 15 V 5V 500 VO VID VCC - = -15 V TEST CIRCUIT FOR FIGURES 4 AND 5 8 2 mV 5 mV 1 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 250 300 350 LM111, LM211, LM311, LM311Y DIFFERENTIAL COMPARATORS WITH STROBES SLCS007A - SEPTEMBER 1973 - REVISED FEBRUARY 1992 TYPICAL CHARACTERISTICS 100 mV VCC = 15 V RE = 2 k to -15 V TA = 25C 15 10 5 mV 5 2 mV 0 -5 - 10 - 15 0 100 mV VCC = 15 V RE = 2 k to -15 V TA = 25C 15 20 mV VO - Output Voltage - V VO - Output Voltage - V OUTPUT RESPONSE FOR VARIOUS INPUT OVERDRIVES Differential Input Voltage Differential Input Voltage OUTPUT RESPONSE FOR VARIOUS INPUT OVERDRIVES 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 10 5 2 mV 0 -5 20 mV - 10 - 15 1.8 5 mV 0 0.2 0.4 t - Time - ns 0.6 0.8 1.0 1.2 1.4 1.6 1.8 t - Time - ns Figure 6 Figure 7 VCC + = 15 V VID VO 2 k VCC - = -15 V TEST CIRCUIT FOR FIGURES 6 AND 7 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 9 LM111, LM211, LM311, LM311Y DIFFERENTIAL COMPARATORS WITH STROBES SLCS007A - SEPTEMBER 1973 - REVISED FEBRUARY 1992 TYPICAL CHARACTERISTICS POSITIVE SUPPLY CURRENT vs POSITIVE SUPPLY VOLTAGE OUTPUT CURRENT AND DISSIPATION vs OUTPUT VOLTAGE 120 700 600 PO (right scale) 100 500 80 400 60 300 40 200 IO (left scale) 20 100 0 0 5 TA = 25C No Load 5 VID = -10 mV 4 3 VID = 10 mV 2 1 0 0 15 10 I CC+ - Positive Supply Current - mA I O - Output Current - mA 140 6 800 VCC = 15 V t 10 s VID = -10 mV TA = 25C PO - Output Dissipation - mW 160 0 VO - Output Voltage - V 5 VCC+ - Positive Supply Voltage - V Figure 9 Figure 8 NEGATIVE SUPPLY CURRENT vs NEGATIVE SUPPLY VOLTAGE I CC- - Negative Supply Current - mA -6 VID = 10 mV or -10 mV TA = 25C No Load -5 -4 -3 -2 -1 0 0 -5 - 10 VCC - - Negative Supply Voltage - V Figure 10 10 10 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 - 15 15 LM111, LM211, LM311, LM311Y DIFFERENTIAL COMPARATORS WITH STROBES SLCS007A - SEPTEMBER 1973 - REVISED FEBRUARY 1992 APPLICATION INFORMATION Figure 11 through Figure 29 show various applications for the LM111, LM211, and LM311 comparators. VCC+ VCC+ 20 k 1 k 3 k 3 k Square Wave Output (fanout to two Series 54 gates or equivalent) 10 k 1200 pF 20 k BAL/ BALANCE STRB 39 k Figure 12. Offset Balancing Figure 11. 100-kHz Free-Running Multivibrator VCC+ 20 k BAL/STRB Output Input TTL Strobe 2N2222 1 k VCC- Figure 13. Strobing Figure 14. Zero-Crossing Detector 5V 1 k 82 k 240 k Input Output to TTL 47 k 82 k Resistor values shown are for a 0-to-30-V logic swing and a 15-V threshold. May be added to control speed and reduce susceptibility to noise spikes. Figure 15. TTL Interface With High-Level Logic POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 11 LM111, LM211, LM311, LM311Y DIFFERENTIAL COMPARATORS WITH STROBES SLCS007A - SEPTEMBER 1973 - REVISED FEBRUARY 1992 APPLICATION INFORMATION VCC+ 100 k 5V 2 k 100 kHz 10 pF 2 k 4.5 k Output Output to TTL 100 k 0.1 F 1 k 50 k Magnetic Transducer Figure 16. Detector for Magnetic Transducer Figure 17. 100-kHz Crystal Oscillator From D/A Network VCC+ VCC+ Output 22 k Analog Input BALANCE Input BAL/STRB 0.1 F TIP30 TTL Strobe 2N2222 Sample 1 k Typical input current is 50 pA with inputs strobed off. Figure 19. Strobing Both Input and Output Stages Simultaneously Figure 18. Comparator and Solenoid Driver VCC+ 3.9 k VCC + = 5 V 3 k 500 10 k 3 k Output 2N3708 BALANCE BAL/ STRB Output to MOS Input + 1 k 1.5 F 10 k 2N2222 VCC - = -10 V Figure 20. Low-Voltage Adjustable Reference Supply 12 POST OFFICE BOX 655303 Figure 21. Zero-Crossing Detector Driving MOS Logic * DALLAS, TEXAS 75265 LM111, LM211, LM311, LM311Y DIFFERENTIAL COMPARATORS WITH STROBES SLCS007A - SEPTEMBER 1973 - REVISED FEBRUARY 1992 APPLICATION INFORMATION VCC+ = 5 V 3.9 k 30 k 1 k 2N3708 1 k 1N914 Output + 2.7 k 1N914 Input From TTL 2N2222 1.5 F 2N2222 510 2N2222 2.2 k Adjust to set clamp level Figure 22. Precision Squarer VCC+ = 5 V 5V TIL102 5 k 1 k TTL Output 100 1 k From TTL Gate 50 k 0.01 F 1 k Figure 23. Digital Transmission Isolator VCC + = 15 V 2 k Input TL081 10 k - Output + + 1.5 F 1 M VCC - = -15 V Figure 24. Positive-Peak Detector POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 13 LM111, LM211, LM311, LM311Y DIFFERENTIAL COMPARATORS WITH STROBES SLCS007A - SEPTEMBER 1973 - REVISED FEBRUARY 1992 APPLICATION INFORMATION VCC + = 15 V 1 M TL081 10 k 2 k + Input Output - + 15 F VCC - = -15 V Figure 25. Negative-Peak Detector VCC + = 5 V 3.9 k 1N2175 2N3708 1 k Output to TTL R1 30 k 2N2222 R1 sets the comparison level. At comparison, the photodiode has less than 5 mV across it decreasing dark current by an order of magnitude. Figure 26. Precision Photodiode Comparator VCC + Inputs BAL/STRB VCC - TTL Strobe 2N3708 1 k Transient voltage and inductive kickback protection Figure 27. Relay Driver With Strobe 14 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 LM111, LM211, LM311, LM311Y DIFFERENTIAL COMPARATORS WITH STROBES SLCS007A - SEPTEMBER 1973 - REVISED FEBRUARY 1992 APPLICATION INFORMATION VCC + 300 BAL/STRB 620 TIP30 1 100 k 100 k Output BAL/STRB 2 10 k TIP29 Input 0.1 F 300 47 620 VCC - Figure 28. Switching Power Amplifier 39 k VCC+ 620 TIP30 300 k 620 BAL/STRB 1 TIP29 15 k Reference VCC- 0.22 F 620 Outputs V+ 510 15 k 510 Input 620 BAL/STRB 2 TIP29 VCC- 39 k 620 TIP30 300 k 620 Figure 29. Switching Power Amplifiers POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 15 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI's standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE ("CRITICAL APPLICATIONS"). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER'S RISK. In order to minimize risks associated with the customer's applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI's publication of information regarding any third party's products or services does not constitute TI's approval, warranty or endorsement thereof. Copyright 1998, Texas Instruments Incorporated