74AUP1T34GW-Q100H

Input Signal:	--
Base Part Number:	74AUP1T34
Supplier Device Package:	5-TSSOP
Package / Case:	5-TSSOP, SC-70-5, SOT-353
Mounting Type:	Surface Mount
Features:	--
Operating Temperature:	-40°C ~ 125°C (TA)
Data Rate:	--
Output Type:	Non-Inverted
Output Signal:	--
Series:	Automotive, AEC-Q100, 74AUP
Voltage - VCCB:	1.1V ~ 3.6V
Voltage - VCCA:	1.1V ~ 3.6V
Channels per Circuit:	1
Number of Circuits:	1
Channel Type:	Unidirectional
Translator Type:	Voltage Level
Part Status:	Active
Packaging:	Tape & Reel (TR)

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74AUP1T34GW-Q100H Logic - Translators, Level Shifters

The 74AUP1T34GW-Q100H is a dual-channel level shifter device. It was designed to facilitate unidirectional and/or bidirectional level shifting/translation of logic signals between lower voltage CMOS logic, such as LVCMOS and TTL, and higher voltage logic such as AUP, ECL and HSTL. Applications for this device include level shifting and signal splitting among different logic families.

Logic Level Translation

When a device operates from a voltage level below the other, level shift devices come in handy. The 74AUP1T34GW-Q100H contains two logic level shifters, a 5-bit shifter and an 8-bit shifter. The 5-bit shifter converts from LVCMOS/TTL to AUP/ECL. This can be used in unidirectional or bidirectional applications. The 8-bit shifter converts from LVCMOS/TTL to HSTL. This can also be used unidirectionally or bidirectionally depending on application purpose.

Signal Splitting

Signal splitting functionality is also supported by the 74AUP1T34GW-Q100H. It is capable of splitting a logic signal into two separate and distinct logic levels. For example, in unidirectional applications to which LVCMOS/TTL is applied, the 74AUP1T34GW-Q100H can be used to split the signal into an AUP/ECL level and an HSTL level. This is useful for applications in which signals need to be routed to different logic families for compatibility with various devices.

Pinout Information

The 74AUP1T34GW-Q100H comes in a VQFN20 package with one logic ground pin, two power supply pins and eleven input/output pins. The five pins of the 5-bit shifter section are labeled A0 to A4 while the 8-bit shifter section pins are labeled B0 to B7. Additionally, the VSS and VDD pins are used for power supply connections.

Operation and Working Principle

The operation of the 74AUP1T34GW-Q100H is enabled by the use of floating transistors on the input logic pins. Logic input is applied to the input logic pins, and each of these is connected to the gate of the corresponding floating transistor. When the input logic pins are high, the corresponding floating transistor turns on and pulls the output logic pin to its discharge voltage (VSS). When the input logic pins are low, the corresponding floating transistor turns off and allows the output logic pin to be pulled to the supply voltage (VDD).The level shifter is designed such that devices operating at two different logic thresholds (VDD and VSS) can be interfaced. The output logic pins of the level shifter are routed to the appropriate logic levels such that the receiving device can be connected directly to the shifter and the signal can be translated into the desired logic levels. Additionally, the level shifter provides measures to prevent signal overloads and short-circuits.

Conclusion

The 74AUP1T34GW-Q100H is a dual-channel level shifter device designed to facilitate level shifting/translation of logic signals between different voltage logic families. It can be used to translate from LVCMOS/TTL to AUP/ECL or HSTL and can also be used to split a signal into different logic levels. Furthermore, the level shifter is designed to prevent signal overloads and is protected against short-circuit conditions.

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