SN65EPT22D

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The SN65EPT22D is a low-power, low-voltage, high-speed differential bus transceiver that is ideal for noise-immune applications such as system protection, automotive audio and telematics. The SN65EPT22D is designed for applications requiring low power, data transmission and local control/computation at low voltage with high speed. It operates at data rates up to 1 Mbps, and has an extremely wide operating voltage of 3.0V to 3.6V. This transceiver has an active-low enable (EN) input, which allows the transceiver to be turned off to save power.

The SN65EPT22D belongs to logic-translators and level shifters due its low-power, low-voltage, high-speed differential bus transceiver capabilities. The working principle of the SN65EPT22D lies in its capability of converting digital signals between two dissimilar logic families with different gate-capacitance, propagation delay, and power-dissipation levels. The SN65EPT22D provides an effective level translation between one logic family with low voltage-swing levels and a second higher voltage-swing logic family. Furthermore, the device can be configured to support applications necessitating low-to-high and high-to-low level shifting.

The SN65EPT22D is used in applications where short-circuit protection, latch-up protection, and transient-suppression are needed. The low power CMOS logic approach of the SN65EPT22D makes it suitable for use in portable and telecommunications systems. The SN65EPT22D is also used to convert between two computation types such as CMOS and TTL logic or to interface with push-pull CMOS logic to open-drain logic. Additionally, the SN65EPT22D is useful for mixed-voltage designs, as it reduces power dissipation and saves valuable board-space due to its small footprint.

The SN65EPT22D consists of four independent-buffers with complementary outputs and is controlled by an enable input (EN). The enable can be used to disable all four independent-buffers for power-down or to enable only the transmission capability of the device. The separate outputs of the SN65EPT22D are ideal for applications involving switching between two different logic families or between two different logic levels, and are capable of shifting between one logic family’s input voltages up to the other family’s output voltages.

The SN65EPT22D has an open-drain output configuration operating through an internal pull-up resistor. This internal pull-up resistor, combined with hysteresis, ensures reliable operation and reduces power consumption. In addition, a standard C-MOS output stage is used which allows the logic family to be changed without descrambling or rerouting the differential bus.

The SN65EPT22D can be used to convert between two dissimilar logic families such as CMOS and TTL logic, or to interface between open-drain and push-pull CMOS logic. The SN65EPT22D supports different voltage levels, such as VCC in the range of 3.0V to 3.6V, and a maximum VCCQ of 3.6V for logic levels up to 3.3V. The SN65EPT22D can be used in applications requiring low-power systems, high-speed data transmission and local control/computing, and noise-immune applications such as automotive audio and telematics. Additionally, the device is ideal for switching between two different logic families or between two different logic levels, and can shift between one logic family’s input voltages up to the other family’s output voltages. Furthermore, the device has both open-drain and push-pull logic capabilities, as well as hysteresis and an internal pull-up resistor, making it a versatile differential-bus transceiver ideal for various applications.

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