HD74LV393A 查看數據表（PDF） - Hitachi -> Renesas Electronics

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HD74LV393A

Dual 4-bit Binary Counters

Hitachi -> Renesas Electronics 

HD74LV393A

Dual 4-bit Binary Counters

ADE-205-276 (Z)

1st Edition

April 1999

Description

The HD74LV393A contain two 4-bit ripple carry binary counters, which can be cascaded to create a single

divide-by-256 counter.

The HD74LV393A is incremented on the high to low transition (negative edge) of the clock input, and

each has an independent clear input. When clear is set high all four bits of each counter are set to a low

level. This enables count trucation and allows the implementation of divide-by-N counter configurations.

Low-voltage and high-speed operation is suitable for the battery-powered products (e.g., notebook

computers), and the low-power consumption extends the battery life.

Features

• VCC = 2.0 V to 5.5 V operation

• All inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V)

• All outputs VO (Max.) = 5.5 V (@VCC = 0 V)

• Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C)

• Typical VOH undershoot > 2.3 V (@VCC = 3.3 V, Ta = 25°C)

• Output current ±6 mA (@VCC = 3.0 V to 3.6 V), ±12 mA (@VCC = 4.5 V to 5.5 V)

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