TL712 DIFFERENTIAL COMPARATOR SLCS002B – JUNE 1983 – REVISED DECEMBER 1992 D D D D D D D Operates From a Single 5-V Supply 0 to 5 V Common-Mode Input Voltage Range Self-Biased Inputs Complementary 3-State Outputs Enable Capability Hysteresis . . . 5 mV Typ Response Times . . . 25 ns Typ D, JG, P, OR PW PACKAGE (TOP VIEW) NC IN – IN + OE 1 8 2 7 3 6 4 5 VCC OUT– OUT+ GND NC – No internal connection symbol (positive logic) description 4 The TL712 is a high-speed comparator fabricated with bipolar Schottky process technology. The circuit has differential analog inputs and complementary 3-state TTL-compatible logic outputs with symmetrical switching characteristics. When the output enable, (OE), is low, both outputs are in the high-impedance state. This device operates from a single 5-V supply and is useful as a disk memory read-chain data comparator. OE IN – IN + 2 7 3 6 OUT– OUT+ The TL712 is characterized for operation from 0°C to 70°C. schematics of inputs and outputs EQUIVALENT OF EACH DIFFERENTIAL INPUT VCC EQUIVALENT OF EACH ENABLE INPUT VCC 8.3 kΩ Nom 4 kΩ Nom TYPICAL OF ALL OUTPUTS VCC 85 Ω Nom 960 Ω Nom OE Input 960 Ω Nom Output 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 TL712 DIFFERENTIAL COMPARATOR SLCS002B – JUNE 1983 – REVISED DECEMBER 1992 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage, VI, any differential input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 25 V Differential input voltage, VID (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 25 V Enable input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Low-level output current, IOL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: JG package . . . . . . . . . . . . . . . . . . . . 300°C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: D, P, or PW package . . . . . . . . . . . . 260°C † 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 in the “recommended operating conditions” section of this specification is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. All voltage values, except differential voltages, are with respect to the network ground. 2. Differential voltage values are at IN+ with respect to IN –. recommended operating conditions Supply voltage, VCC Common-mode input voltage, VIC MIN NOM MAX UNIT 4.75 5 5.25 V 0 5 High-level output current, IOH Low-level output current, IOL Operating free-air temperature, TA 0 V –1 mA 16 mA 70 °C MAX UNIT 100 mV electrical characteristics at VCC = 5 V, TA = 25°C PARAMETER VT Vhys Threshold voltage (VT + and VT –) VOH VOL High-level output voltage IOZ II Off-state output current IIH High-level enable current IIL ri Low-level enable current ro Output resistance TEST CONDITIONS VICR = 0 to 5 V MIN – 100‡ Hysteresis (VT + – VT –) TYP 5 VID = 100 mV, VID = – 100 mV, Low-level output voltage Enable current IOH = – 1 mA IOL = 16 mA 2.7 mV 3.5 0.5 V VO = 2.4 V VI = 5.5 V – 20 µA 100 µA VIH = 2.7 V VIL = 0.4 V 20 µA – 360 µA DIfferential input resistance 0.4 V 4 kΩ 100 W IOS Short-circuit output current – 15 – 85 mA ICC Supply current VID = 0, No load 17 20 mA ‡ The algebraic convention, where the more negative limit is designated as minimum, is used in this data sheet for input threshold voltage levels only. switching characteristics, VCC = 5 V, TA = 25°C PARAMETER tPLH tPHL TEST CONDITIONS Propagation delay time, low-to-high-level output Propagation delay time, high-to-low-level output TTL load load, 1 See Figure 1, See Note 3 MIN TYP MAX UNIT 25 ns 25 ns NOTE 3: The response time specified is for a 100-mV input step with 5-mV overdrive (105 mV total), and is the interval between the input step function and the instant when the output crosses 2.5 V. 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TL712 DIFFERENTIAL COMPARATOR SLCS002B – JUNE 1983 – REVISED DECEMBER 1992 PARAMETER MEASUREMENT INFORMATION 5V 2 kΩ Output 1N4148 Figure 1. TTL Output Load Circuit TYPICAL CHARACTERISTICS OUTPUT RESPONSE FOR VARIOUS INPUT OVERDRIVE VOLTAGES 3 100 mV + Overdrive VO – Output Voltage – V 4 VCC = 5 V TTL Load TA = 25°C Differential Input Voltage VCC = 5 V TTL Load TA = 25°C Differential Input Voltage VO – Output Voltage – V 5 OUTPUT RESPONSE FOR VARIOUS INPUT OVERDRIVE VOLTAGES 100 mV 50 mV 20 mV 5 mV 2 1 0 100 mV + Overdrive 5 4 3 100 mV 50 mV 20 mV 5 mV 2 1 0 0 5 10 15 20 25 30 35 40 0 t – Time – ns 5 10 15 20 25 30 35 40 t – Time – ns Figure 2 Figure 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 TL712 DIFFERENTIAL COMPARATOR SLCS002B – JUNE 1983 – REVISED DECEMBER 1992 VO – Output Voltage – V VIC – Common-Mode Input Voltage TYPICAL CHARACTERISTICS COMMON-MODE PULSE RESPONSE 4 VCC = 5 V TA = 25°C 3 2 1 0 50 Ω VO 1.7 50 Ω VIC 1.65 1.6 1.55 1.5 0 20 40 60 80 100 120 140 160 t – Time – ns Figure 4 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 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. 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