74AC20
74AC20 is DUAL 4-INPUT NAND GATE manufactured by STMicroelectronics.
DESCRIPTION protection circuits against static discharge, giving The AC20 is an advanced high-speed CMOS .. DUAL 4-INPUT NAND GATE fabricated with them 2KV ESD immunity and transient excess sub-micron silicon gate and double-layer metal voltage. s
HIGH SPEED: t PD = 4 ns (TYP.) at VCC = 5V LOW POWER DISSIPATION: ICC = 4 µA (MAX.) at TA = 25 o C HIGH NOISE IMMUNITY: VNIH = VNIL = 28% VCC (MIN.) 50Ω TRANSMISSION LINE DRIVING CAPABILITY SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 24 m A (MIN) BALANCED PROPAGATION DELAYS: t PLH ≅ t PHL OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 6V PIN AND FUNCTION PATIBLE WITH 74 SERIES 20 IMPROVED LATCH-UP IMMUNITY
B M (Plastic Package) (Micro Package) ORDER CODES : 74AC20B 74AC20M
PIN CONNECTION AND IEC LOGIC SYMBOLS
May 1997
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INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION
PIN No 1, 9 2, 10 3, 11 5, 13 6, 8 7 14 SYMBOL 1A to 2A 1B to 2B 1C to 2C 1D to 2D 1Y to 2Y GND VCC NAME AND F UNCTIO N Data Inputs Data Inputs Data Inputs Data Inputs Data Outputs Ground (0V) Positive Supply Voltage
TRUTH TABLE
A L X X X H B X L X X H C X X L X H C X X X L H Y H H H H L
ABSOLUTE MAXIMUM RATINGS
Symbol VCC VI VO IIK IOK IO Tstg TL Supply Voltage DC Input Voltage DC Output Voltage DC Input Diode Current DC Output Diode Current DC Output Current Storage Temperature Lead Temperature (10 sec) Parameter Value -0.5 to +7 -0.5 to VCC + 0.5 -0.5 to VCC + 0.5 ± 20 ± 20 ± 50 ± 100 -65 to +150 300 Unit V V V m A m A m A m A o o
ICC or IGND DC VCC or Ground Current
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.
REMENDED OPERATING CONDITIONS
Symbol VCC VI VO Top dt/dv Supply Voltage Input Voltage Output Voltage Operating Temperature: Input Rise and Fall Time VCC = 3.0, 4.5 or 5.5 V(note 1) Parameter Value 2 to 6 0 to VCC 0 to VCC -40 to +85 8 Un it V V V o
C ns/V
1) VIN from 30% to 70% of VCC
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DC SPECIFICATIONS
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