74LV393

General description

The 74LV393 is a low-voltage Si-gate CMOS device and is pin and function compatible with 74HC/HCT393.

The 74LV393 is a dual 4-bit binary ripple counter with separate clocks (1CP, 2CP) and master reset (1MR, 2MR) inputs to each counter.

The operation of each half of the "393" is the same as the "93" except no external clock connections are required. The counters are triggered by a HIGH-to-LOW transition of the clock inputs. The counter outputs are internally connected to provide clock inputs to succeeding stages. The outputs of the ripple counter do not change synchronously and should not be used for high-speed address decoding.

The master resets are active-HIGH asynchronous inputs to each 4-bit counter identified by the "1" and "2" in the pin description. A HIGH level on the nMR input overrides the clock and sets the outputs LOW.

Features

• Optimized for Low Voltage applications: 1.0 to 3.6V
• Accepts TTL input levels between V_CC = 2.7V and V_CC = 3.6V
• Typical V OLP (output ground bounce) < 0.8V @ V_CC = 3.3VT amb = 25°C
• Typical V OHV (output V OH undershoot) > 2V @ V_CC = 3.3VT amb = 25°C
• Two 4-bit binary counters with individual clocks
• Divide-by any binary module up to 28 in one package
• Two master resets to clear each 4-bit counter individually
• Output capability: standard
• I_CC category: MSI

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74LV393 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.

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