Toshiba

Description

Datasheet Nov 30, 2015 The 74HC21 is a dual 4-input AND gate. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to May 7, 1999 Added 1k pull up resistor to IOCHRDY signal. REV 1.2. Sheet 3: Replace 74HC4072 OR gate with 74HC21 AND gate. shared interrupt signals. 74HC20N/S15. N. Selection Type only. 935073760112. 12/31/99. 06/30/00 Standard product. 7. No Volume. 74HC21 . N-B. BURN-IN VERSION. 933833330652. DIR. STEP. HSM. Reset. Phase 1. Phase. 2. Dis1. Dis2. ___. Dis2. Dis. 1. ___. IC1=7 4HC86. IC2=IC3=74HC00. IC4= 74HC21 . IC5=IC6=74HC175. IC1. IC1. IC1. 74HC21 . 27-1. 108-1. 337-1. 14. 74HCT21. 27-1. 108-1. 337-1. 14. 74HC221. 38 -1. 109-1. 338-1. 16. 74HCT221. 38-1. 109-1. 338-1. 16. 74HC237. 38-1. 109-1.