74VHCT14A

74VHCT14A HEX SCHMITT inverter Features ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ High speed: tPD = 5.5ns (typ.) at VCC = 5V Low power dissipation: ICC = 2 µA (Max.) at TA = 25°C Typical hysteresis: Vh = 0.7V at VCC = 4.5V Power down protection on inputs & outputs Symmetrical output impedance: |IOH| = IOL = 8 mA (Min) Balanced propagation delays: tPLH ≅ tPHL Operating voltage range: VCC(Opr) = 4.5V to 5.5V Pin and function compatible with 74 series 14 Improved latch-up immunity Low noise: VOLP = 0.8V (Max.) SO-14 TSSOP14 Description The 74VHCT14A is an advanced high-speed CMOS HEX SCHMITT inverter fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. The internal circuit is composed of 3 stages including buffer output, which provides high noise immunity and stable output. Power down protection is provided on all inputs and outputs and 0 to 7V can be accepted on inputs with no regard to the supply voltage. This device can be used to interface 5V to 3V since all inputs are equipped with TTL threshold. Pin configuration and function are the same as those of the 74VHC04 but the 74VHC14 has hysteresis. This together with its schmitt trigger function allows it to be used on line receivers with slow rise/fall input signals. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. Table 1. Device summary Part number 74VHCT14AMTR 74VHCT14ATTR Package SO-14 TSSOP14 Packaging Tape and reel Tape and reel May 2007 Rev 2 1/15 www.st.com 15 Contents 74VHCT14A Contents 1 2 Logic symbols and I/O equivalent circuit . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 2.2 2.3 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.1 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 5 6 7 8 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2/15 74VHCT14A Logic symbols and I/O equivalent circuit 1 Logic symbols and I/O equivalent circuit Figure 1. IEC logic symbols Figure 2. Input and output equivalent circuit 3/15 Pin settings 74VHCT14A 2 2.1 Pin settings Pin connection Figure 3. Pin connection (top through view) 2.2 Pin description Table 2. Pin description Pin N° 1, 3, 5, 9, 11, 13 2, 4, 6, 8, 10, 12 7 14 Symbol 1A to 6A 1Y to 6Y GND VCC Data inputs Data outputs Ground (0V) Positive supply voltage Name and function 2.3 Truth table Table 3. Truth table Inputs A L H Output Y H L 4/15 74VHCT14A Maximum rating 3 Maximum rating stressing the device above the rating listed in the “absolute maximum ratings” table may cause permanent damage to the device. these are stress ratings only and operation of the device at these or any other conditions above those indicated in the operating sections of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. refer also to the STMicroelectronics sure program and other relevant quality documents. Table 4. Absolute maximum ratings Symbol VCC VI VO VO IIK IOK IO ICC IGND Tstg TL Supply voltage DC input voltage DC output voltage (1) Parameter Value -0.5 to +7.0 -0.5 to +7.0 -0.5 to +7.0 -0.5 to VCC + 0.5 - 20 ± 20 ± 25 ± 50 ± 50 -65 to +150 300 Unit V V V V mA mA mA mA mA °C °C DC output voltage (2) DC input diode current DC output diode current DC output current DC supply current per supply pin DC ground current per supply pin Storage temperature Lead temperature (10 sec) 1. VCC = 0V 2. High or low state 3.1 Recommended operating conditions Table 5. Recommended operating conditions Symbol VCC VI VO VO Top 1. VCC = 0V 2. High or low state Parameter Supply voltage Input voltage Output voltage (1) Value 4.5 to 5.5 0 to 5.5 0 to 5.5 0 to VCC -55 to 125 Unit V V V V °C Output voltage (2) Operating temperature 5/15 Electrical characteristics 74VHCT14A 4 Electrical characteristics Table 6. DC specifications Test condition Symbol Parameter VCC (V) 4.5 5.5 4.5 5.5 4.5 5.5 VOH High level output voltage Low level output voltage Input leakage current Quiescent supply current Additional worst case supply current Output leakage current 4.5 4.5 4.5 4.5 0 to 5.5 5.5 5.5 IO=-50 µA IO=-8 mA IO=50 µA IO=8 mA VI = 5.5V or GND VI = VCC or GND One Input at 3.4V, other input at VCC or GND VOUT = 5.5V 0.6 0.6 0.4 0.4 4.4 3.94 0.0 0.1 0.36 ± 0.1 2 1.35 4.5 1.4 1.5 TA = 25°C Min. Typ. Max. 2.0 2.0 0.6 0.6 0.4 0.4 4.4 3.8 0.1 0.44 ± 1.0 20 1.5 1.4 1.5 Value -40 to 85°C Min. Max. 2.0 2.0 0.6 0.6 0.4 0.4 4.4 3.7 0.1 0.55 ± 1.0 20 1.5 µA µA mA V 1.4 1.5 V V -55 to 125°C Min. Max. 2.0 2.0 V V Unit Vt+ High level threshold voltage Low level threshold voltage Hysteresis voltage Vt- Vh VOL II ICC +ICC IOPD 0 0.5 5.0 5.0 µA 6/15 74VHCT14A Electrical characteristics Table 7. AC electrical characteristics (Input tr = tf = 3ns) Test condition Symbol Parameter CL (1) (pF) (V) 5.0 5.0 15 50 VCC TA = 25°C Min. Typ. 5.5 6.7 Max. 7.6 8.0 Value -40 to 85°C Min. 1.0 1.0 Max. 8.5 9.5 -55 to 125°C Min. 1.0 1.0 Max. 9.5 10.5 ns Unit tPLH tPHL 1. Propagation delay time Voltage range is 5.0V ± 0.5V Table 8. Capacitive characteristics Test condition Symbol Parameter TA = 25°C Min. CIN CPD Input capacitance Power dissipation capacitance (1) Typ. 6 20 Max. 10 Value -40 to 85°C Min. Max. 10 -55 to 125°C Min. Max. 10 pF pF Unit 1. CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/6 (per gate) Table 9. Dynamic switching characteristics Test condition Symbol Parameter VCC (V) TA = 25°C Min. Typ. 0.3 5.0 -0.8 5.0 5.0 CL = 50 pF 2.0 0.6 -0.3 V V Max. 0.8 V Value -40 to 85°C Min. Max. -55 to 125°C Min. Max. Unit VOLP VOLV VIHD VILD Dynamic low voltage quiet output (1) (2) Dynamic high voltage input (1) (3) Dynamic low voltage input (1) (3) 1. Worst case package. 2. Max number of outputs defined as (n). Data inputs are driven 0V to 5.0V, (n-1) outputs switching and one output at GND. 3. Max number of data inputs (n) switching. (n-1) switching 0V to 5.0V. Inputs under test switching: 5.0V to threshold (VILD), 0V to threshold (VIHD), f = 1MHz. 7/15 Test circuit 74VHCT14A 5 Test circuit Figure 4. Test circuit CL = 15/50pF or equivalent (includes jig and probe capacitance) RT = ZOUT of pulse generator (typically 50Ω) 6 Waveforms Figure 5. Waveform - propagation delay (f = 1MHz; 50% duty cycle) 8/15 74VHCT14A Package mechanical data 7 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect . The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com 9/15 Package mechanical data 74VHCT14A SO-14 MECHANICAL DATA DIM. A A1 A2 B C D E e H h L k ddd 5.8 0.25 0.4 0° mm. MIN. 1.35 0.1 1.10 0.33 0.19 8.55 3.8 1.27 6.2 0.50 1.27 8° 0.100 0.228 0.010 0.016 0° TYP MAX. 1.75 0.25 1.65 0.51 0.25 8.75 4.0 MIN. 0.053 0.004 0.043 0.013 0.007 0.337 0.150 0.050 0.244 0.020 0.050 8° 0.004 inch TYP. MAX. 0.069 0.010 0.065 0.020 0.010 0.344 0.157 0016019D 10/15 74VHCT14A Package mechanical data TSSOP14 MECHANICAL DATA mm. DIM. MIN. A A1 A2 b c D E E1 e K L 0˚ 0.45 0.60 0.05 0.8 0.19 0.09 4.9 6.2 4.3 5 6.4 4.4 0.65 BSC 8˚ 0.75 0˚ 0.018 0.024 1 TYP MAX. 1.2 0.15 1.05 0.30 0.20 5.1 6.6 4.48 0.002 0.031 0.007 0.004 0.193 0.244 0.169 0.197 0.252 0.173 0.0256 BSC 8˚ 0.030 0.004 0.039 MIN. TYP. MAX. 0.047 0.006 0.041 0.012 0.0089 0.201 0.260 0.176 inch A A2 A1 b e K c L E D E1 PIN 1 IDENTIFICATION 1 0080337D 11/15 Package mechanical data 74VHCT14A Tape & Reel SO-14 MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 6.4 9 2.1 3.9 7.9 12.8 20.2 60 22.4 6.6 9.2 2.3 4.1 8.1 0.252 0.354 0.082 0.153 0.311 TYP MAX. 330 13.2 0.504 0.795 2.362 0.882 0.260 0.362 0.090 0.161 0.319 MIN. TYP. MAX. 12.992 0.519 inch 12/15 74VHCT14A Package mechanical data Tape & Reel TSSOP14 MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 6.7 5.3 1.6 3.9 7.9 12.8 20.2 60 22.4 6.9 5.5 1.8 4.1 8.1 0.264 0.209 0.063 0.153 0.311 TYP MAX. 330 13.2 0.504 0.795 2.362 0.882 0.272 0.217 0.071 0.161 0.319 MIN. TYP. MAX. 12.992 0.519 inch 13/15 Revision history 74VHCT14A 8 Revision history Table 10. Revision history Date 12-Nov-2004 03-May-2007 Revision 1 2 First release Document reformatted, updated Table 6 on page 6 Changes 14/15 74VHCT14A Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. 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