SY100EL91LZC

The main purpose of a logic-translator, level-shifter, or voltage translator is to adapt a given logic signal from one voltage rail to another. This allows devices that operate at different voltages to be connected and used in the same system. This type of device is necessary and can be found in nearly every kind of circuit that includes computer, embedded, and communication systems. The SY100EL91LZC is a family of 5V level translators from Cypress Semiconductor which offer improved performance, low noise, low power consumption, and are compatible with 1.8V, 2.5V, 3.3V and 5V signaling. These devices use logic-level conversion and feature both bi-directional and uni-directional protocols depending on the application.

Working Principle of SY100EL91LZC

Each of the SY100EL91LZC devices contains an output stage, configurable during design. It is also capable of supporting a wide range of loading conditions. These are bidirectional voltage translators suitable for power bus interfacing between two logic regions which operate at different power supply voltages. All logic inputs and outputs are CMOS/TTL compatible and feature a low "OFF" logic state current. The devices also have a logic-level conversion circuit for each of the six bidirectional I/O pairs that can be configured for bi-directional protocol conversion.

Features:

• Bi-directional configuration capability
• High-performance, low-noise operation
• Low power consumption, with minimum driver and receiver power requirements
• TTL and CMOS compatible
• High speed data rate operation
• Compatible with 1.8V, 2.5V, 3.3V and 5V signaling

Application of SY100EL91LZC

These family of 5V level shifters from Cypress Semiconductor offer solutions for different types of applications. SY100EL91LZC can be used in a variety of data processing, communication and embedded applications for bi-directional level translation between core and external I/O voltages. It is also suitable for low frequency (<1MHz) digital signal translation when both the buses do not exceed 5.5V absolute maximum. Examples of applications include communication devices, power-supply lines in high data rate TV systems, audio and video converters, controllers in data acquisition systems and high-speed microprocessor bus interfacing.

The SY100EL91LZC is a versatile device which provides the designers with a level shifting circuit to adapt one set of logic families of lower or higher voltage levels to that of the opposite side: low to high and high to low. Designers can select voltage levels in order to make the device compatible with any type of logic circuit and its associated voltage levels, without needing to add additional components. As such, the SY100EL91LZC is a convenient, powerful and cost-effective tool for connecting devices of varying voltage levels in the same system.