SN74LV21APWT

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The SN74LV21A series is a family of high-speed low-voltage CMOS logic gates and inverters manufactured by Texas Instruments. It is specified over the operating ranges of −40 to +125 °C, 2.0 V to 3.6 V and is suitable for a wide range of logic applications. The SN74LV21A series features a two-input NAND gate, an inverter and a Schmitt-trigger inverter, all with open-drain outputs. The combination of the open-drain outputs and the low-voltage capability of the series make it ideal for applications such as keyboard or mouse encoding, or for multiplex data bus interfacing.

The SN74LV21A series has been designed for logic family performance. Its operation is based on the proven and time-tested complementary-MOS (CMOS) design technique. This design technique uses both enhancement-mode and depletion-mode transistors in the same package, resulting in high performance and low power consumption.

The SN74LV21A has two-input NAND gates, inverters, and Schmitt-trigger inverters. It is available in 10-pin SOIC and 16-pin TSSOP packages. The NAND gates and inverters feature open-drain outputs and are designed to interface with a wide range of logic ICs and bus switch devices. The Schmitt-trigger input has hysteresis, which makes it ideal for noise-free switching signals in low-voltage applications. The low-voltage capability also results in significant power savings in comparison to standard five-volt logic.

The open-drain outputs of the SN74LV21A series provide the advantage of allowing multiple devices to be connected to the same bus with a single pull-up resistor. This is especially useful for automotive and consumer applications, where multiple devices must control one line. Additionally, the open-drain outputs reduce the power consumption of the system by allowing the device to be shut off when it is not in use.

The series is designed to meet both the requirements of CMOS and TTL logic standards. All of the devices are specified with a minimum power supply voltage of 2.0V and a maximum voltage of 3.6V, which makes them suitable for a wide range of voltage applications. The low-voltage design also reduces the power consumption and increases the speed of the devices.

The devices are immune to latch-up, which is a major concern for low-voltage ICs. They are also designed to be more reliable and have a higher immunity to electro-static discharge (ESD). In addition, the devices are tested to meet the requirements of the Automotive Electronics Council Standard AEC-Q100.

In summary, the SN74LV21A series is a high-speed low-voltage CMOS logic gate and inverter with open-drain outputs, suitable for a wide range of logic applications. It features two-input NAND gates, inverters, and Schmitt-trigger inverters. The series has been designed to meet both the requirements of CMOS and TTL logic standards, and to provide a high level of immunity to latch-up and ESD. The series is available in 10-pin SOIC and 16-pin TSSOP packages and is suitable for a wide range of voltage applications.

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