74VHC20 DUAL 4-INPUT NAND GATE PRELIMINARY DATA ■ ■ ■ ■ ■ ■ ■ ■ ■ HIGH SPEED: tPD = 3.3 ns (TYP.) at VCC = 5V LOW POWER DISSIPATION: ICC = 2 µA (MAX.) at TA = 25 oC HIGH NOISE IMMUNITY: VNIH = VNIL = 28% VCC (MIN.) POWER DOWN PROTECTION ON INPUTS SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 8 mA (MIN) BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 5.5V PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 20 IMPROVED LATCH-UP IMMUNITY DESCRIPTION The 74VHC20 is an advanced high-speed CMOS DUAL 4-INPUT NAND GATE 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 provide high noise M (Micro Package) T (TSSOP Package) ORDER CODES : 74VHC20M 74VHC20T immunity and stable output. Power down protection is provided on all inputs 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. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. PIN CONNECTION AND IEC LOGIC SYMBOLS June 1999 1/7 74VHC20 INPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No SYMBOL 1, 9 1A to 2A Data Inputs NAME AND FUNCT ION 2, 10 1B to 2B Data Inputs 3, 11 N.C. 4, 12 1C to 2C Data Inputs 5, 13 1D to 2D Data Inputs 6, 8 1Y to 2Y Data Outputs 7 GND Ground (0V) 14 VCC Positive Supply Voltage Not Connected TRUTH TABLE A B C D Y L X X X H X L X X H X X L X H X X X L H H X: ”H” or ”L” H H H L ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit Supply Voltage -0.5 to +7.0 V VI DC Input Voltage -0.5 to +7.0 V VO DC Output Voltage -0.5 to VCC + 0.5 V IIK DC Input Diode Current - 20 mA IOK DC Output Diode Current ± 20 mA IO DC Output Current ± 25 mA ± 50 mA VCC ICC or IGND DC VCC or Ground Current Tstg Storage Temperature TL Lead Temperature (10 sec) -65 to +150 o 300 o C C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. RECOMMENDED OPERATING CONDITIONS Symbol VCC Parameter Supply Voltage Unit V V VI Input Voltage 0 to 5.5 VO Output Voltage 0 to VCC Top dt/dv Operating Temperature Input Rise and Fall Time (see note 1) (VCC = 3.3 ± 0.3V) (V CC = 5.0 ± 0.5V) 1) VIN from 30% to70%of VCC 2/7 Valu e 2.0 to 5.5 -40 to +85 0 to 100 0 to 20 V o C ns/V ns/V 74VHC20 DC SPECIFICATIONS Symb ol VIH VIL VOH VOL Parameter T est Cond ition s Min. ICC Typ . Un it -40 to 85 o C Max. Min . Max. High Level Input Voltage 2.0 1.5 1.5 3.0 to 5.5 0.7VCC 0.7VCC Low Level Input Voltage 2.0 0.5 0.5 3.0 to 5.5 0.3VCC 0.3VCC High Level Output Voltage Low Level Output Voltage 2.0 IO=-50 µA 1.9 2.0 1.9 3.0 IO=-50 µA IO=-50 µA 2.9 3.0 2.9 4.5 4.4 4.5 4.4 3.0 IO=-4 mA 2.58 2.48 4.5 IO=-8 mA 3.94 3.8 Input Leakage Current Quiescent Supply Current V V V 2.0 IO=50 µA 0.0 0.1 0.1 3.0 IO=50 µA IO=50 µA 0.0 0.1 0.1 0.0 0.1 0.1 0.44 4.5 II Value T A = 25 o C V CC (V) V 3.0 IO=4 mA 0.36 4.5 IO=8 mA 0.36 0.44 0 to 5.5 VI = 5.5V or GND ±0.1 ±1.0 µA 5.5 VI = VCC or GND 2 20 µA AC ELECTRICAL CHARACTERISTICS (Input t r = tf =3 ns) Symb ol Parameter V CC (V) tPLH tPHL Propagation Delay Time Test Co ndition CL (pF ) Value T A = 25 o C 3.3 3.3(*) 5.0(**) 15 50 15 Typ . 4.6 7.1 3.3 (**) 50 4.8 (*) 5.0 Min. Un it -40 to 85 o C Max. 6.6 10.1 5.0 Min . 1.0 1.0 1.0 Max. 8.0 11.5 6.0 7.0 1.0 8.0 ns (*) Voltage range is 3.3V ± 0.3V (**) Voltage range is 5V ± 0.5V CAPACITIVE CHARACTERISTICS Symb ol Parameter T est Cond ition s Value o T A = 25 C Min. -40 to 85 C Typ . Max. 10 C IN Input Capacitance 4 CPD Power Dissipation Capacitance (note 1) 19 Un it o Min . Max. 10 pF pF 1) CPD isdefined as the value of the IC’sinternal equivalent capacitance which is calculated fromthe operating current consumption without load. (Referto Test Circuit).Average operating current can be obtained by the following equation. ICC(opr) = CPD • VCC • fIN + ICC/4 (per Gate) 3/7 74VHC20 TEST CIRCUIT CL = 15/50 pF or equivalent (includes jig and probe capacitance) RT = ZOUT of pulse generator (typically 50Ω) WAVEFORM: PROPAGATION DELAYS (f=1MHz; 50% duty cycle) 4/7 74VHC20 SO-14 MECHANICAL DATA mm DIM. MIN. TYP. A a1 inch MAX. MIN. TYP. 1.75 0.1 0.068 0.2 a2 MAX. 0.003 0.007 1.65 0.064 b 0.35 0.46 0.013 0.018 b1 0.19 0.25 0.007 0.010 C 0.5 0.019 c1 45 (typ.) D 8.55 8.75 0.336 0.344 E 5.8 6.2 0.228 0.244 e 1.27 e3 0.050 7.62 0.300 F 3.8 4.0 0.149 0.157 G 4.6 5.3 0.181 0.208 L 0.5 1.27 0.019 0.050 M S 0.68 0.026 8 (max.) P013G 5/7 74VHC20 TSSOP14 MECHANICAL DATA mm DIM. MIN. inch TYP. A MAX. MIN. MAX. 1.1 0.433 A1 0.05 0.10 0.15 0.002 0.004 0.006 A2 0.85 0.9 0.95 0.335 0.354 0.374 b 0.19 0.30 0.0075 0.0118 c 0.09 0.20 0.0035 0.0079 D 4.9 5 5.1 0.193 0.197 0.201 E 6.25 6.4 6.5 0.246 0.252 0.256 E1 4.3 4.4 4.48 0.169 0.173 0.176 e 0.65 BSC 0.0256 BSC K 0o 4o 8o 0o 4o 8o L 0.50 0.60 0.70 0.020 0.024 0.028 A A2 A1 b e K c E1 PIN 1 IDENTIFICATION 1 L E D 6/7 TYP. 74VHC20 Information furnished is believed to be accurate and reliable. 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