HD74ALVCH162821 outputs equivalent, 3.3-v 20-bit bus interface flip flops with 3-state outputs.
* VCC = 2.3 V to 3.6 V
* Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C)
* Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25°C)
* High out.
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