SN54HC21

SN74HC21, SN54HC21 SCLS087F – DECEMBER 1982 – REVISED JUNE 2021 SNx4HC21 Dual 4-Input AND Gates 1 Features Buffered inputs Wide operating voltage range: 2 V to 6 V Wide operating temperature range: -40°C to +85°C Supports fanout up to 10 LSTTL loads Significant power reduction compared to LSTTL logic ICs 2 Applications Combining power good signals Enable digital signals 3 Description This device contains two independent 4-input AND gates. Each gate performs the Boolean function Y = A ● B ● C ● D in positive logic. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) SN74HC21D SOIC (14) 8.70 mm × 3.90 mm SN74HC21N PDIP (14) 19.30 mm × 6.40 mm SN74HC21NS SO (14) 10.20 mm × 5.30 mm SN74HC21PW TSSOP (14) 5.00 mm × 4.40 mm SN54HC21J CDIP (14) 21.30 mm × 7.60 mm SN54HC21FK LCCC (20) 8.90 mm × 8.90 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. 1 1A 2 1B 3 NC 4 1C 5 1D 6 1Y 7 GND 14 VCC 13 2D 12 2C 11 NC 10 2B 9 2A 8 2Y Functional pinout An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. SN74HC21, SN54HC21 SCLS087F – DECEMBER 1982 – REVISED JUNE 2021 www.ti.com Table of Contents 1 Features............................................................................1 2 Applications........................................................