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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.