ICL3221ECAZ

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The ICL3221ECAZ is a high performance 3.3V multi-channel level translator. In combination with devices such as MOSFETs, TTL, CMOS, ECL, FET and LVTTL, this device can provide voltage level shifting while connecting two devices over a wide voltage range. This device is typically used in applications where devices are communicating at different voltage levels or an interface to logic families running at different voltages is required. This device is pin-compatible with the TS3D221E family.

The ICL3221ECAZ is designed for both high and low speed applications, with low propagation delays and high bias current increase system margins. The offset voltage between the control and output channels allows for the differential drive of high capacitance loads with minimal power consumption. The output enable pin can be used to disable the outputs when VCC1 or VCC2 are not present, reducing power consumption significantly.

The ICL3221ECAZ is typically used in applications such as interfacing between an ASIC and a memory, an ASIC and a logic family, or logic families at different voltage levels. It can also be used for interfacing between manual switch/push button types of interfaces, such as a press switch or push button, and logic, as well as interfacing a bi-directional level shifter. The device is compatible with TTL, CMOS, and biCMOS technologies and features ESD protection.

The ICL3221ECAZ working principle is that it most commonly interfaces two supply voltages called VCC1 and VCC2, and a ground potential. The output voltage levels are determined by the voltage at VCC1 and VCC2. When VCC1 or VCC2 is high, the outputs on their respective sides will also be high. The output levels can be changed from 1.2V to 5V by changing the voltage levels on either VCC1 or VCC2.

The ICL3221ECAZ is able to translate the voltage level of one input to an output with a different voltage level. This is done by comparing and adjusting the voltage levels of both VCC1 and VCC2. When VCC1 exceeds VCC2 by a given threshold, the output of the ICL3221ECAZ will go positive and the output will go negative when VCC2 exceeds VCC1. The threshold voltage between the two is typically between 0.5V to 0.8V, depending on the device.

The ICL3221ECAZ also features a high-current drive capability, allowing for higher capacitive loads to be driven with minimal power consumption. The offset voltage between the control and output channels also allows for the differential drive of higher capacitive loads with minimal power consumption. Additionally, the device also features ESD protection, allowing for protection from high electrostatic voltages.

In conclusion, the ICL3221ECAZ is an ideal multi-channel, level translator that provides voltage level shifting between two devices over a wide voltage range. It is designed to interface between different logic families at differing voltages and power consumption. It is also able to compare and adjust the voltage levels of both VCC1 and VCC2, as well as provide high current drive capabilities and ESD protection. The device is an excellent choice for applications such as interfacing between ASICs and memory or logic families, or hand switch/push button-type interfaces and logic.

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