SN74LV393APWT

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The SN74LV393APWT is a dual four-bit digital counter which combines two separate four-bit synchro/ripple counter sections into a single package. It is a positive-edge triggered synchronous device with reset and individual Up/Down pins for each counter section. It is widely used in a variety of applications such as counters, dividers, display drivers, frequency dividers, etc.

This device is made with titanium-compliant schottky technology and is available in the WLCSP (Wafer-Level Chip-Scale Package) form factor. It is suitable for use in automotives, consumer electronics, medical, industrial, and other applications.

Working principle

The SN74LV393APWT is a dual 4-bit synchronous counter with synchronous clear, count direction control and index control on each of the two sections. When triggered by a positive-edge, the SN74LV393APWT will instantly clear the counter value to zero, begin counting in the direction specified, and continue counting until a terminal count of 15 (in binary, “1111”) is reached. At the terminal count, a carry-out pulse is generated along with the terminal count. The carry-out can be used to select a higher order means of counting or referencing.

The SN74LV393APWT supports individual or simultaneous control of both counters through the UP/DOWN inputs. When the device is enabled, both counters will begin counting in the direction selected by their respective UP/DOWN inputs. When the device is in the disabled state, both counters will hold their respective values.

The SN74LV393APWT has a reset input which can be used to reset all the internal flip-flops. When the reset is activated, the counters will reset to zero and the carry-out of all stages will be low. The reset can be used to synchronize multiple counters or to quickly reset and start a new counting sequence.

The SN74LV393APWT also features a clock input and clock enable input. The clock enable input can be used to disable the counter’s clock to put the device in a power-down or hold state. The clock input can be used to synchronize the SN74LV393APWT with other logic.

Application field

The SN74LV393APWT is suitable for use in a wide range of applications, including frequency dividing, display driving, and synchronizing multiple counters. It can also be used in automotive and industrial applications, as well as consumer electronics, medical, and other applications.

In frequency dividing applications, the SN74LV393APWT can be used to divide the input frequency, allowing for a variety of possible frequencies. It can be used to drive displays in applications such as electronic gaming machines, where it can be used to drive a 7-segment display with the correct digit and decimal point combination. It can also be used to synchronize multiple counters in applications such as frequency counters.

In automotive applications, the SN74LV393APWT can be used for in-dash instrumentation, data logging and diagnostic systems. In industrial applications, it can be used for systems monitoring and control, as well as for frequency dividing, data logging, and display driving. In consumer electronics, it can be used for frequency dividing and synchronizing multiple counters.

The SN74LV393APWT is ideal for applications where power consumption, low-cost, and reliability are paramount. It is well suited for use in high-attitude and high-volume applications where cost and power consumption are critical factors.

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