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M74HC21

ST Microelectronics
Part Number M74HC21
Manufacturer ST Microelectronics
Description DUAL 4-INPUT AND GATE
Published May 6, 2005
Detailed Description M74HC21 DUAL 4-INPUT AND GATE s s s s s s s HIGH SPEED: tPD = 11ns (TYP.) at VCC = 6V LOW POWER DISSIPATION: ICC ...
Datasheet PDF File M74HC21 PDF File

M74HC21
M74HC21

Overview
M74HC21 DUAL 4-INPUT AND GATE s s s s s s s HIGH SPEED: tPD = 11ns (TYP.
) at VCC = 6V LOW POWER DISSIPATION: ICC = 1µA(MAX.
) at TA=25°C HIGH NOISE IMMUNITY: VNIH = V NIL = 28 % VCC (MIN.
) SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 4mA (MIN) BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL WIDE OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 6V PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 21 DIP SOP TSSOP ORDER CODES PACKAGE DIP SOP TSSOP TUBE M74HC21B1R M74HC21M1R T&R M74HC21RM13TR M74HC21TTR DESCRIPTION The M74HC21 is an high speed CMOS DUAL 4-INPUT AND GATE fabricated with silicon gate C2MOS technology.
The internal circuit is composed of 3 stages including buffer output, which enables high noise immunity and stable output.
All inputs are equipped with protection circuits against static discharge and transient excess voltage.
PIN CONNECTION AND IEC LOGIC SYMBOLS August 2001 1/8 M74HC21 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No 1, 9 2, 10 3, 11 4, 12 5, 13 6, 8 7 14 SYMBOL 1A to 2A 1B to 2B N.
C.
1C to 2C 1D to 2D 1Y to 2Y GND VCC NAME AND FUNCTION Data Inputs Data Inputs Not Connected 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 D X X X L H Y L L L L H ABSOLUTE MAXIMUM RATINGS Symbol VCC VI VO IIK IOK IO Supply Voltage DC Input Voltage DC Output Voltage DC Input Diode Current DC Output Diode Current DC Output Current Parameter Value -0.
5 to +7 -0.
5 to VCC + 0.
5 -0.
5 to VCC + 0.
5 ± 20 ± 20 ± 25 ± 50 500(*) -65 to +150 300 Unit V V V mA mA mA mA mW °C °C ICC or IGND DC VCC or Ground Current PD Power Dissipation Tstg TL Storage Temperature Lead Temperature (10 sec) Absolute Maximum Ratings are those values beyond which damage to the device may occur.
Functional operation under these conditions is not implied (*) 500mW at 65 °C; derate to 300mW by 10mW/°C from 65°C to 85°C RECOMMENDED OPERATING CONDITIONS Symbol VCC VI VO Top tr, tf Supply Voltage Input Voltage Output V...


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