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Logic - Translators, Level Shifters

In this article, we will discuss the application field and working principle of SY100ELT21ZI-TR logic translators, level shifters.

A logic translator is a device that converts a logic signal of one voltage level to a logic signal of another voltage level. Level shifter, 2-level/3-level translators, are approaches commonly used to perform either input-to-output voltage level translations or vice versa.

SY100ELT21ZI-TR is a member of the SY100E family of logic translators. It is a single-step, 1.2V-to-1.8V logic translator from Pericom Semiconductor Corporation.

The SY100ELT21ZI-TR logic translator is designed to convert 1.2V logic signals to 1.8V signals. It is fully compatible with 1.2V and 1.8V CMOS devices. It can also be used as a level-shifter in applications where 1.2V and 1.8V CMOS devices are used together.

SY100ELT21ZI-TR features low-voltage logic translation with the supply voltage at or below 1.8V. It features an ultra-low power 3V-to-1.8V translation. In addition, the SY100ELT21ZI-TR has an active-low enable/disable control input (ENA), which allows the logic translator to be powered down while not in use, reducing power consumption.

The SY100ELT21ZI-TR logic translator has many applications. It can be used in portable applications, eliminating the need for level shifters in the chip by converting 1.2V and 1.8V logic signals. It is also ideal for use in mixed-voltage circuitry to interface microcontrollers and other devices that operate at different voltages.

The working principle of SY100ELT21ZI-TR can be described as follows: The SY100ELT21ZI-TR logic translator is an asynchronous device; it accepts 1.2V input logic, translates it to 1.8V logic, and outputs it in a single step. The enable/disable control input (ENA) enables the active-low control of the logic translator, allowing the user to enable or disable the translator as needed.

When the enable input (ENA) is high, the translator is enabled. If the enable input is low, the translator is disabled and will not produce any output. The translator operates over a wide input/output voltage range of 1.2V to 1.8V, supporting both 1.2V and 1.8V logic levels. The translators have fast rise/fall times and low propagation delays, allowing for high-speed data transmission.

In conclusion, the SY100ELT21ZI-TR is a single-step, 1.2V-to-1.8V logic translator from Pericom Semiconductor Corporation. It can be used in various applications needing level shifting, such as interfacing 1.2V and 1.8V CMOS devices. The SY100ELT21ZI-TR logic translator operates over a wide input/output voltage range, and has an enable/disable control input (ENA), allowing the translator to be powered down while not in use.

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