General-Purpose Logics-HD/RD74HC Series

Dual 4-input AND Gates

Features • High Speed Operation: tpd = 11 ns typ (CL = 50 pF) • High Output Current: Fanout of 10 LSTTL Loads • Wide Operating Voltage: VCC = 2 to 6 V • Low Input Current: 1 µA max • Low Quiescent Supply Current: ICC (static) = 1 µA max (Ta = 25°C)

Dual 4-input AND Gates

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Dual 4-input AND gate

General description 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 voltages in excess of VCC.

Dual 4-input AND gate

Dual 4-input AND gate

The 74HC21 is a high-speed Si-gate CMOS device and is pin compatible with low-power Schottky TTL (LSTTL). The 74HC21 provide the 4-input AND function.

Dual 4-input AND gate

1. General description 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 voltages in excess of VCC. 2. Features and benefits • Wide supply voltage range from 2.0 to 6.0 V • CMOS low power dissipation

Dual 4-input AND gate