HD74LV393A Datasheet, PDF (1/15 Pages) Hitachi Semiconductor – Dual 4-bit Binary Counters

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
• V_CC = 2.0 V to 5.5 V operation
• All inputs V_IH (Max.) = 5.5 V (@V_CC = 0 V to 5.5 V)
• All outputs V_O (Max.) = 5.5 V (@V_CC = 0 V)
• Typical V_OL ground bounce < 0.8 V (@V_CC = 3.3 V, Ta = 25°C)
• Typical V_OH undershoot > 2.3 V (@V_CC = 3.3 V, Ta = 25°C)
• Output current ±6 mA (@V_CC = 3.0 V to 3.6 V), ±12 mA (@V_CC = 4.5 V to 5.5 V)