SY100ELT21LZC-TR

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The SY100ELT21LZC-TR is a logic-level translator and shifter that uses a single 2.5V or 3.3V power supply. It features low input current, high-speed operation, single-channel bi-directionality, and adjustable output levels, making it an ideal choice for applications needing to translate and bridge logic levels, or for bi-directional level shifting between two system voltage domains.

This device is particularly suited to applications in which two electrically isolated systems, with different logic levels, exchange data over bidirectionally. The SY100ELT21LZC-TR supports a variety of applications, including Auto Power-on Reset logic level conversion, I/O voltage level translation, low-voltage I/O expansion, AC detection logic level conversion, and data transmission logic level conversion.

Working Principle of the SY100ELT21LZC-TR

The SY100ELT21LZC-TR functions by analyzing the input voltage and automatically selecting the appropriate output voltage. The device has two separate pins for input signals (IN) and output signals (OUT). When the logic level of the IN pin is at the lower level, the OUT pin will output the lower level voltage, and when the logic level of the IN pin is at the higher level, the OUT pin will output the higher voltage level. The input voltage can range from 0.4V to 3.0V, and the output voltage levels can be adjusted from 0.4V to 3.6V, depending on the user’s application requirements.

The SY100ELT21LZC-TR device has two control input pins, EN and SEL, which are used to enable and select the output voltage level, respectively. The SEL pin provides the user with two-level selection of the output voltage: 3.3V when SEL tied to VDD and 2.5V when SEL tied to GND. When the device is disabled by the EN pin, all the output pins are tri-stated, while the input pins remain unaffected.

Application Fields of the SY100ELT21LZC-TR

The SY100ELT21LZC-TR can be applied in different applications, for instance in AC detection logic level conversion, where the device can detect the on/off voltage level of the AC power source and rapidly perform the switching at the lowest voltage level; in I/O voltage level translation, where the device can bridge the gap between the system peripheral’s low-voltage interface and the high-voltage system; and in Auto Power-on Reset logic level conversion, where the device can detect the power-on reset voltage level and automatically switch the logic level of the input/output without causing any delay.

The SY100ELT21LZC-TR can also be used in low-voltage I/O expansion, where it can be used as a simple and convenient solution for expanding the I/O capability of the system; and in data transmission logic level conversion, where it can be used to bridge any gap between the data transmission nodes of two different logic level signals, allowing for successful transmission of data.

Conclusion

The SY100ELT21LZC-TR is a versatile logic-level translator and shifter that can be used in a variety of applications to bridge the gap between two different logic-level domains. Its low voltage inputs, adjustable output levels, and high speed operations make it the ideal choice for applications in which two systems with different logic levels exchange data over bidirectional lines.

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