SN74LV393APWRE4

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SN74LV393APWRE4: Logic - Counters, Dividers

The SN74LV393APWRE4 is an advanced digital logic integrated circuit consisting of two 4-bit binary counters and a synchronous 4-bit binary up/down counter, all designed with Schmitt triggers on all inputs and outputs. It has a wide operating temperature range from – 55°C to + 125°C and is available in a variety of packages ranging from through-hole, slim-body SOIC, to QSOP and TSSOP varieties.

The odd numbered counters are positive edge-triggered. Each is designed so that when a high-to-low transition is detected on their clock inputs, their outputs are incremented. The even-numbered counters are negative edge-triggered, meaning that they increment upon a low-to-high transition. Each up/down counter consists of four individual 3-state stages. Each stage has an enable input which determines whether or not the counter is counting up or down. The enable input also includes an asynchronous clear input.

The SN74LV393APWRE4 is ideal for counting applications such as frequency division, bar-code scanning, and waveform generation. The output of the UP/DOWN counter is used as a watchdog timer to monitor malfunctions in digital systems such as micro-controllers and programmable logic controllers while the output of the binary counters can be used to generate pulse width modulation signals needed in applications such as motor speed control.

The SN74LV393APWRE4 offers several advantages over other similar devices. It has an extremely low power consumption of only 5.0 uA, making it ideal for battery powered applications. It has an extremely low propagation delay time (1.5 ns) as well as very low quiescent and disable current. Additionally, it is robust enough to withstand high ESD strikes without sustaining damage.

The SN74LV393APWRE4 also provides protection circuit features to avoid the risk of device overheating or damage due to power surges. The input protection diodes protect against electrostatic discharge events, while the output current protection located at the output pins eliminate the risk of device damage due to short circuits or overcurrent. Additionally, the output pin protection protects against voltage levels beyond the rated operating voltage.

In summary, the SN74LV393APWRE4 is an advanced digital logic IC designed for use in a variety of applications including frequency division, bar-code scanning, waveform generation, motor speed control, and as a watchdog timer. The device offers several advantages over other similar ICs including low power consumption, low propagation delay time, low quiescent and disable currents, and robust ESD protection. With its wide operating temperature range, the SN74LV393APWRE4 is the ideal choice for a variety of applications.

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