GTL2107PW,112

Output Signal:	LVTTL
Base Part Number:	74GTL2107
Supplier Device Package:	28-TSSOP
Package / Case:	28-TSSOP (0.173", 4.40mm Width)
Mounting Type:	Surface Mount
Features:	--
Operating Temperature:	-40°C ~ 85°C (TA)
Data Rate:	--
Output Type:	Open Drain, Push-Pull
Series:	--
Input Signal:	GTL
Channels per Circuit:	12
Number of Circuits:	1
Channel Type:	Unidirectional
Translator Type:	Mixed Signal
Part Status:	Obsolete
Packaging:	Tube

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GTL2107PW, 112 Application Field and Working Principle

GTL2107PW is one type of logic translator, level shifter which consists of I/O logic motion cells. It is designed to shift the level of digital signals between two incompatible logic families and provide interface between different voltage domains. This can offer a simple and cost effective solution to interface between two voltage domains without any external components like resistors, capacitors etc. The GTL2107PW is a quad logic translator/level shifter that can be used to communicate between two different logic families. This device can be used in the range of 0.9V to 5.5V supply voltage ranges and have a low operating current of 15mA. It can be used for voltage shifting, translating and scaling of digital signals up to 1MHz for data transmission and timing conversion.

Application Fields

GTL2107PW is widely used to interface between two incompatible logic families or voltage domains with the help of Logic-Translators, Level Shifters. This device can be used in many applications such as:

• Getting signals from 5V or 3.3V universal asynchronous receiver/transmitter (UART) device to a 1.8V device
• Getting signals from a TTL to a CMOS device, such as forcing TTL signals out of a FIFO to CMOS input devices
• Forcing signals from a CMOS device, such as a microphone, into a TTL device
• Force voltage levels on the outputs of a control logic device up to 1MHz and meet the voltage requirement of the external device
• Forcing and converting signals of low to high level voltages and low to high frequency timing conversion for data transmission between two devices.

Working Principle

GTL2107PW is a differential logic translator that consists of I/O logic motion cells. The I/O logic motions cells can be used to shift the signal level and provide signal and timing conversion between two incompatible logic families. The device works on two modes, active and passive mode. In the passive mode, the I/O signal level is shifted through a logical OR-AND gate without any signal noise reduction. In the active mode, the output level can be buffered for signal level scaling or signal drive capability.The GTL2107PW works on the differential signal principle. The differential input voltage gives a single-ended output on the I/O outputs. The signaling voltage obtained from differential input is converted to single-ended output signals with zero offset and it can further be adjusted through logic translation.The device also has separate input and output buffers, which can provide protection from input spikes. This protection of input pins also helps in providing a clean signal output for digital communication.

Conclusion

In conclusion, the GTL2107PW is a quad logic translator/level shifter which can be used to communicate between two different logic families. It can be used in the range of 0.9V to 5.5V supply, provide a low operating current of 15mA and offer a simple and cost effective solution to interface between different voltage domains. It can be used for voltage shifting, translating and scaling of digital signals up to 1MHz for data transmission and timing conversion. Therefore, the device can be used in many applications such as getting signals from 5V/3.3V to 1.8V, getting signals from TTL to CMOS and more.

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