SN74LV273ADBRE4

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Logic - Flip Flops

The SN74LV273ADBRE4 device is a dual-edge-triggered, 8-bit flip-flop with two clocks. It is a member of the Texas Instruments SN74LV00AE logic family and is available in a 14-pin SOIC package.

The device can be used to toggle its outputs at predetermined data rate with relatively low power consumption and low cost. The device is designed for asynchronous communication in systems or digital designs with short length clock signals or applications that require the data to be transferred synchronized with the clock edge, such as audio and video switches.

The SN74LV273ADBRE4 device contains two transparent latches with complimentary output. The two gates of the two latches are connected internally. The latch and clock inputs have hysteresis which defines “no propagation delay” and “very low jitter” time for VDD and VDDQ signals. When the output of one latch is low, the output of the other latch is high. The dynamic performance of the device is optimized for low-voltage operation, with less than 550ps propagation delay and 50ns rise/fall time. The output enable (OE) input allows the user to disarm the outputs from contention.

Working principle

The SN74LV273ADBRE4 device can be used as a simple toggle flip-flop, with two data-inputs Clock1 (CK1) and Clock2 (CK2), two output enable controls (OEn & OEs) and two outputs, Q1 & Q2. The device uses two input signals, Clock1 (CK1) and Clock2 (CK2), to determine the output state of Q1 & Q2. The device is synchronized with the transition of clock edges.

When Clock1 (CK1) is HIGH and Clock2 (CK2) is LOW, the output of Q1 will be changed to the logical state of the corresponding D-input and the output of Q2 will remain unchanged until the falling edge of Clock2 (CK2). Similarly, when Clock1 (CK1) is LOW and Clock2 (CK2) is HIGH, the output of Q2 will be changed to the logical state of the corresponding D-input and the output of Q1 will remain unchanged until the falling edge of Clock1 (CK1).

The SN74LV273ADBRE4 device also provides two output enables which can be used to disable the outputs. When OEn is LOW, the output Q1 will be LOW. Similarly, when OEs is LOW, the output Q2 will be LOW.

Applications

The applications of the SN74LV273ADBRE4 device are wide-reaching and can be applied in multiple segments, including:

• Computer printers
• Audio/video systems
• Digital switching systems
• Microcontroller-controlled systems

The SN74LV273ADBRE4 device, due to its low power consumption, synchronous operation and fast transition times, is particularly suited for portable applications. It is also used in circuits to generate random pulses, dividing frequency by two, modulating data signals, and for providing clocks for other components. The versatility of the device makes it suitable for use in many other types of applications including frequency division, clock generation, and data modulation.

The SN74LV273ADBRE4 device is frequently used as a toggle flip-flop due to its reliable operation and low cost. Its two output states can also be used to drive logic ‘1’ and ‘0’ levels respectively on sequential devices or it can be used to drive an active-high enable or active-low enable signal to drive multiple outputs.

Conclusion

The SN74LV273ADBRE4 device is a versatile and cost-effective flip-flop that is suitable for use in many types of applications, including audio/video systems, computer printers, and digital switching systems. It offers low power consumption and fast transition times, making it well-suited for portable applications. The device features two output enables for disabling the outputs and can be used to toggle its outputs at predetermined data rate with relatively low power consumption and low cost.

The versatility of the device makes it useful for various tasks such as frequency division, clock generation and data modulation. It can also be used in circuits to generate random pulses, divide frequency by two, modulate data signals, and provide clocks for other components.

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