SN54HCT14, SN74HCT14 HEX SCHMITT-TRIGGER INVERTERS SCLS225C – JULY 1995 – REVISED FEBRUARY 2000 D D Inputs Are TTL-Voltage Compatible Package Options Include Plastic Small-Outline (D), Shrink Small-Outline (DB), Thin Very Small-Outline (DGV), Thin Shrink Small-Outline (PW), and Ceramic Flat (W) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) DIPs SN54HCT14 . . . J OR W PACKAGE SN74HCT14 . . . D, DB, DGV, N, OR PW PACKAGE (TOP VIEW) 1A 1Y 2A 2Y 3A 3Y GND description The ’HCT14 devices contain six independent inverters. The devices perform the Boolean function Y = A in positive logic. L L H 13 3 12 4 11 5 10 6 9 7 8 4 3 2 1 20 19 18 5 17 6 16 7 15 8 14 9 10 11 12 13 6Y NC 5A NC 5Y 3Y GND NC 4Y 4A H 2 VCC 6A 6Y 5A 5Y 4A 4Y 1Y 1A NC VCC 6A 2A NC 2Y NC 3A FUNCTION TABLE (each inverter) OUTPUT Y 14 SN54HCT14 . . . FK PACKAGE (TOP VIEW) The SN54HCT14 is characterized for operation over the full military temperature range of –55°C to 125°C. The SN74HCT14 is characterized for operation from –40°C to 85°C. INPUT A 1 NC – No internal connection logic symbol† 1A 2A 3A 4A 5A 6A 1 2 3 4 5 6 9 8 11 10 13 12 1Y 2Y 3Y 4Y 5Y 6Y † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown are for the D, DB, DGV, J, N, PW, and W packages. logic diagram (positive logic) A Y Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright 2000, 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. On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 SN54HCT14, SN74HCT14 HEX SCHMITT-TRIGGER INVERTERS SCLS225C – JULY 1995 – REVISED FEBRUARY 2000 absolute maximum ratings over operating free-air temperature range† Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to VCC +0.5 V Output voltage range, VO (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to VCC +0.5 V Input clamp current, IIK (VI < 0 or VI > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA Output clamp current, IOK (VO < 0 or VO > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±25 mA Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA Package thermal impedance, θJA (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86°C/W DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96°C/W DGV package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127°C/W N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80°C/W PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113°C/W Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°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 under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The package thermal impedance is calculated in accordance with JESD 51. recommended operating conditions (see Note 3) SN54HCT14 MIN VCC VI Supply voltage VO TA Output voltage Input voltage Operating free-air temperature SN74HCT14 MAX UNIT MAX MIN 4.5 5.5 4.5 5.5 V 0 0 0 VCC VCC V 0 VCC VCC –55 125 –40 85 °C V NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004. 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN54HCT14, SN74HCT14 HEX SCHMITT-TRIGGER INVERTERS SCLS225C – JULY 1995 – REVISED FEBRUARY 2000 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VCC MIN TA = 25°C TYP MAX SN54HCT14 SN74HCT14 MIN MAX MIN MAX VT+ Positive-going Positive going threshold 4.5 V 1.2 1.5 1.9 1.2 1.9 1.2 1.9 5.5 V 1.4 1.7 2.1 1.4 2.1 1.4 2.1 VT– Negative-going Negative going threshold 4.5 V 0.5 0.9 1.2 0.5 1.2 0.5 1.2 5.5 V 0.6 1 1.4 0.6 1.4 0.6 1.4 ∆VT Hysteresis (VT+ – VT–) 4.5 V 0.4 0.6 1.4 0.4 1.4 0.4 1.4 5.5 V 0.4 0.65 1.5 0.4 1.5 0.4 1.5 UNIT V V V VOH IOH = –20 µA IOH = –4 mA 4.5 V 4.4 4.49 4.4 4.4 4.5 V 3.98 4.3 3.7 3.84 VOL IOL = 20 µA IOL = 4 mA 4.5 V 0.001 0.1 0.1 0.1 4.5 V 0.17 0.26 0.4 0.33 II ICC VI = VCC or GND VI = VCC or GND, 5.5 V ±0.1 ±1 ±1 µA 5.5 V 2 40 20 µA 2.4 3 2.9 mA 10 pF ∆ICC† IO = 0 One input at 0.5 V or 2.4 V, Other inputs at GND or VCC 5.5 V 0.2 Ci VI = VCC or GND 5V 3 10 10 † This is the increase in supply current for each input that is at one of the specified TTL voltage levels rather than 0 V or VCC. V V switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) tpd d A Y tt Y VCC MIN TA = 25°C TYP MAX SN54HCT14 MIN MAX SN74HCT14 MIN MAX 4.5 V 20 32 48 40 5.5 V 18 30 45 38 4.5 V 7 15 22 19 5.5 V 6 14 20 17 UNIT ns ns operating characteristics, TA = 25°C PARAMETER Cpd TEST CONDITIONS Power dissipation capacitance No load POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TYP 10 UNIT pF 3 SN54HCT14, SN74HCT14 HEX SCHMITT-TRIGGER INVERTERS SCLS225C – JULY 1995 – REVISED FEBRUARY 2000 PARAMETER MEASUREMENT INFORMATION From Output Under Test 3V Test Point Input 1.3 V 1.3 V 0V CL = 50 pF (see Note A) tPLH In-Phase Output LOAD CIRCUIT 1.3 V 10% tPHL 90% 90% tr Input 1.3 V 10% 90% tPHL VCC 90% 1.3 V 10% 0 V tr Out-of-Phase Output 90% VOLTAGE WAVEFORM INPUT RISE AND FALL TIMES tPLH 1.3 V 10% tf tf VOH 1.3 V 10% V OL tf 1.3 V 10% 90% VOH VOL tr VOLTAGE WAVEFORMS PROPAGATION DELAY AND OUTPUT RISE AND FALL TIMES NOTES: A. CL includes probe and test-fixture capacitance. B. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr = 6 ns, tf = 6 ns. C. The outputs are measured one at a time with one input transition per measurement. D. tPLH and tPHL are the same as tpd. Figure 1. Load Circuit and Voltage Waveforms 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN54HCT14, SN74HCT14 HEX SCHMITT-TRIGGER INVERTERS SCLS225C – JULY 1995 – REVISED FEBRUARY 2000 TYPICAL CHARACTERISTICS SUPPLY CURRENT vs INPUT VOLTAGE SUPPLY CURRENT vs INPUT VOLTAGE 0.5 0.5 VCC = 5.5 V 0.45 0.45 0.4 0.4 I CC – Supply Current – mA I CC – Supply Current – mA VCC = 4.5 V 0.35 0.3 VI = 0 to VCC 0.25 VI = VCC to 0 ÁÁ ÁÁ 0.35 VI = VCC to 0 0.3 0.25 ÁÁ ÁÁ 0.2 0.15 0.1 0.2 0.15 0.1 0.05 0 VI = 0 to VCC 0.05 0 0.45 0.9 1.35 1.8 2.26 2.7 3.16 3.61 0 4 0 0.55 1.1 1.66 2.2 2.76 3.3 VI – Input Voltage – V VI – Input Voltage – V OUTPUT VOLTAGE vs INPUT VOLTAGE OUTPUT VOLTAGE vs INPUT VOLTAGE 6 6 VCC = 4.5 V VCC = 5.5 V 5 VO – Output Voltage – V 5 VO – Output Voltage – V 3.86 4.4 4.97 4 VI = Down 3 VI = Up 2 1 0 4 VI = Down 3 VI = Up 2 1 0 –1 –1 0 0.75 1.5 2.27 3 3.77 0 VI – Input Voltage – V POST OFFICE BOX 655303 0.92 1.84 2.76 3.68 4.6 VI – Input Voltage – V • DALLAS, TEXAS 75265 5 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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