74HC393; 74HCT393

General description

The 74HC393; HCT393 is a high-speed Si-gate CMOS device and is pin compatible with Low-power Schottky TTL (LSTTL). It is specified in compliance with JEDEC standard no. 7A.

The 74HC393; 74HCT393 contains 4-bit binary ripple counters with separate clocks (1CP and 2 CP) and master reset (1MR and 2MR) inputs to each counter.

The operation of each half of the 74HC393; 74HCT393 is the same as the 74HC93; 74HCT93, 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 (1MR and 2MR) are active-HIGH asynchronous inputs to each 4-bit counter. A HIGH level on the nMR input overrides the clock and sets the outputs LOW.

Features

• 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

Products/packages

Pricing/ordering/availability

Block diagrams/pinning

Technical documents

Support Documents

HCT_USER_GUIDE; HC/T User Guide (1997-11-01)

75015144; Philips PicoGate and MicroPak packaging options (2005-07-01)

Parametrics/similar products

Similar products

74HC393; 74HCT393 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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