Datasheet

74HC21_5 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 05 — 7 May 2009 12 of 14
NXP Semiconductors
74HC21
Dual 4-input AND gate
13. Abbreviations
14. Revision history
Table 10. Abbreviations
Acronym Description
CMOS Complementary Metal Oxide Semiconductor
DUT Device Under Test
ESD ElectroStatic Discharge
HBM Human Body Model
MM Machine Model
TTL Transistor-Transistor Logic
Table 11. Revision history
Document ID Release date Data sheet status Change notice Supersedes
74HC21_5 20090507 Product data sheet - 74HC21_4
Modifications:
Table 1: Type number 74HCT21PW changed to 74HC21PW.
74HC21_4 20090407 Product data sheet - 74HC21_3
Modifications:
• The format of this data sheet has been redesigned to comply with the new identity guidelines
of NXP Semiconductors.
• Legal texts have been adapted to the new company name where appropriate.
• Added type number 74HC21PW (TSSOP14 package).
74HC21_3 20041112 Product data sheet - 74HC_HCT21_CNV_2
74HC_HCT21_CNV_2 19970828 Product specification - 74HC_HCT21_1
74HC_HCT21_1 19901201 Product specification - -