Logic - Translators, Level Shifters

Category Introduction

Logic translator or level shifter ICs are devices used to pass information between digital logic devices that are operating from different/incompatible supply voltages, or which implement different signaling methods. Examples might include the connection of a digital-output sensor requiring a 5 V supply to an FPGA with a 3.3 V I/O supply, or converting between single-ended signaling methods like CMOS or TTL and differential techniques, such as PECL or LVDS.

Product List

658 Items

Mfr Part #	Quantity Available	UnitPrice	Series	Packaging	Product Status	Translator Type	Channel Type	Number of Circuits	Channels per Circuit	Voltage - VCCA	Voltage - VCCB	Input Signal	Output Signal	Output Type	Data Rate	Operating Temperature	Features	Mounting Type	Package / Case	Supplier Device Package
74LVC1T45GS,132 IC TRNSLTR BIDIRECTIONAL 6XSON Nexperia USA Inc.	7	$0.53	74LVC	Tape & Reel (TR)	Active	Voltage Level	Bidirectional	1	1	1.2 V ~ 5.5 V	1.2 V ~ 5.5 V	-	-	Tri-State, Non-Inverted	420Mbps	-40°C ~ 125°C (TA)	-	Surface Mount	6-XFDFN	6-XSON, SOT1202 (1x1)
74AUP1T34GM,115 IC TRNSLTR UNIDIRECTIONAL 6XSON Nexperia USA Inc.	1,337	$0.54	74AUP	Tape & Reel (TR)	Active	Voltage Level	Unidirectional	1	1	1.1 V ~ 3.6 V	1.1 V ~ 3.6 V	-	-	Non-Inverted	-	-40°C ~ 125°C (TA)	-	Surface Mount	6-XFDFN	6-XSON, SOT886 (1.45x1)
74AVCH2T45DC,125 IC TRNSLTR BIDIRECTIONAL 8VSSOP Nexperia USA Inc.	510	$0.59	74AVCH	Tape & Reel (TR)	Active	Voltage Level	Bidirectional	1	2	0.8 V ~ 3.6 V	0.8 V ~ 3.6 V	-	-	Tri-State, Non-Inverted	500Mbps	-40°C ~ 125°C (TA)	-	Surface Mount	8-VFSOP (0.091", 2.30mm Width)	8-VSSOP
SN74AXC1T45DBVR IC TRNSLTR BIDIRECTIONAL SOT23-6 Texas Instruments	391	$0.68	74AXC	Tape & Reel (TR)	Active	Voltage Level	Bidirectional	1	1	0.65 V ~ 3.6 V	0.65 V ~ 3.6 V	-	-	Tri-State, Non-Inverted	500Mbps	-40°C ~ 125°C (TA)	-	Surface Mount	SOT-23-6	SOT-23-6
SN74LVC1T45DRLR IC TRNSLTR BIDIRECTIONAL 6SOT Texas Instruments	121	$0.70	74LVC	Tape & Reel (TR)	Active	Voltage Level	Bidirectional	1	1	1.65 V ~ 5.5 V	1.65 V ~ 5.5 V	-	-	Tri-State, Non-Inverted	420Mbps	-40°C ~ 85°C (TA)	-	Surface Mount	SOT-563, SOT-666	SOT-5X3
74LVC4245APW,118 IC TRNSLTR BIDIRECTIONAL 24TSSOP Nexperia USA Inc.	1,031	$0.91	74LVC	Tape & Reel (TR)	Active	Voltage Level	Bidirectional	1	8	1.5 V ~ 5.5 V	1.5 V ~ 3.6 V	-	-	Tri-State, Non-Inverted	-	-40°C ~ 125°C (TA)	-	Surface Mount	24-TSSOP (0.173", 4.40mm Width)	24-TSSOP
74LVC4245APW,112 IC TRNSLTR BIDIRECTIONAL 24TSSOP Nexperia USA Inc.	527	$0.87	74LVC	Tube	Obsolete	Voltage Level	Bidirectional	1	8	1.5 V ~ 5.5 V	1.5 V ~ 3.6 V	-	-	Tri-State, Non-Inverted	-	-40°C ~ 125°C (TA)	-	Surface Mount	24-TSSOP (0.173", 4.40mm Width)	24-TSSOP
FXWA9306L8X IC TRNSLTR BIDIR 8MICROPAK onsemi	414	$0.97		Tape & Reel (TR)	Active	Voltage Level	Bidirectional	1	2	1 V ~ 5.5 V	1.8 V ~ 5.5 V	-	-	Open Drain, Tri-State	-	-40°C ~ 85°C (TA)	Auto-Direction Sensing	Surface Mount	8-UFQFN	8-MicroPak™
TXU0204BQAR FOUR CHANNEL UNIDIRECTIONAL LEVE Texas Instruments	565	$0.90		Tape & Reel (TR)	Active	Voltage Level	Unidirectional	1	4	1.08 V ~ 5.5 V	1.08 V ~ 5.5 V	-	-	Tri-State	200Mbps	-40°C ~ 125°C (TA)	-	Surface Mount	14-WFQFN Exposed Pad	14-WQFN (3x2.5)
NLSX4373DR2G IC TRNSLTR BIDIRECTIONAL 8SOIC onsemi	237	$1.07		Tape & Reel (TR)	Active	Voltage Level	Bidirectional	1	2	1.5 V ~ 5.5 V	1.5 V ~ 5.5 V	-	-	Open Drain, Tri-State	20Mbps	-40°C ~ 85°C (TA)	Auto-Direction Sensing	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
MC14504BDR2G IC TRNSLTR UNIDIRECTIONAL 16SOIC onsemi	220	$1.12		Tape & Reel (TR)	Active	Voltage Level	Unidirectional	1	6	3 V ~ 18 V	3 V ~ 18 V	-	-	Non-Inverted	-	-55°C ~ 125°C (TA)	-	Surface Mount	16-SOIC (0.154", 3.90mm Width)	16-SOIC
SN74AVC2T245RSWR IC TRNSLTR BIDIRECTIONAL 10UQFN Texas Instruments	626	$1.10	74AVC	Tape & Reel (TR)	Active	Voltage Level	Bidirectional	1	2	1.2 V ~ 3.6 V	1.2 V ~ 3.6 V	-	-	Tri-State, Non-Inverted	500Mbps	-40°C ~ 85°C (TA)	-	Surface Mount	10-UFQFN	10-UQFN (1.8x1.4)
74AVC16T245DGG,118 IC TRNSLTR BIDIRECTIONAL 48TSSOP Nexperia USA Inc.	28	$1.58	74AVC	Tape & Reel (TR)	Active	Voltage Level	Bidirectional	2	8	0.8 V ~ 3.6 V	0.8 V ~ 3.6 V	-	-	Tri-State, Non-Inverted	380Mbps	-40°C ~ 125°C (TA)	-	Surface Mount	48-TFSOP (0.240", 6.10mm Width)	48-TSSOP
TXB0104QPWRQ1 IC TRNSLTR BIDIRECTIONAL 14TSSOP Texas Instruments	143	$1.37	Automotive, AEC-Q100	Tape & Reel (TR)	Active	Voltage Level	Bidirectional	1	4	1.2 V ~ 3.6 V	1.65 V ~ 5.5 V	-	-	Tri-State, Non-Inverted	100Mbps	-40°C ~ 125°C (TA)	Auto-Direction Sensing	Surface Mount	14-TSSOP (0.173", 4.40mm Width)	14-TSSOP
ADG3301BKSZ-REEL7 IC TRNSLTR BIDIRECTIONAL SC70 Analog Devices Inc.	234	$1.61		Tape & Reel (TR)	Active	Voltage Level	Bidirectional	1	1	1.15 V ~ 5.5 V	1.65 V ~ 5.5 V	-	-	Tri-State, Non-Inverted	50Mbps	-40°C ~ 85°C (TA)	Auto-Direction Sensing	Surface Mount	6-TSSOP, SC-88, SOT-363	SC-70-6
CAXC4T774QBQBRQ1 AUTOMOTIVE 4-BIT 2-SUPPLY BUS TR Texas Instruments	33	$1.62	Automotive, AEC-Q100, 74AXC	Tape & Reel (TR)	Active	Voltage Level	Bidirectional	1	4	0.65 V ~ 3.6 V	0.65 V ~ 3.6 V	-	-	Non-Inverted	310Mbps	-40°C ~ 125°C (TA)	-	Surface Mount	16-WFQFN Exposed Pad	16-WQFN (2.5x3.5)
SN74AVC1T45DCKT IC TRNSLTR BIDIRECTIONAL SC70-6 Texas Instruments	21	$1.31	74AVC	Tape & Reel (TR)	Active	Voltage Level	Bidirectional	1	1	1.2 V ~ 3.6 V	1.2 V ~ 3.6 V	-	-	Tri-State, Non-Inverted	500Mbps	-40°C ~ 85°C (TA)	-	Surface Mount	6-TSSOP, SC-88, SOT-363	SC-70-6
SN74LXC8T245RHLR 8-BIT DUAL-SUPPLY BUS TRANSCEIVE Texas Instruments	11	$1.60	74LXC	Tape & Reel (TR)	Active	Voltage Level	Bidirectional	1	8	1.1 V ~ 5.5 V	1.1 V ~ 5.5 V	-	-	Tri-State, Non-Inverted	420Mbps	-40°C ~ 125°C (TA)	-	Surface Mount	24-VFQFN Exposed Pad	24-VQFN (5.5x3.5)
NLSV4T244MUTAG IC TRNSLTR UNIDIRECTIONAL 12UQFN onsemi	24	$2.28		Tape & Reel (TR)	Active	Voltage Level	Unidirectional	1	4	0.9 V ~ 4.5 V	0.9 V ~ 4.5 V	-	-	Tri-State, Non-Inverted	-	-40°C ~ 105°C (TA)	Over Voltage Protection, Power-Off Protection	Surface Mount	12-UFQFN	12-UQFN (1.7x2)
CLXC8T245QRHLRQ1 AUTOMOTIVE 8-BIT DUAL-SUPPLY WID Texas Instruments	440	$1.94		Tape & Reel (TR)	Active	Voltage Level	Bidirectional	2	8	1.1 V ~ 5.5 V	1.1 V ~ 5.5 V	-	-	Tri-State	420Mbps	-40°C ~ 125°C (TA)	-	Surface Mount	24-VFQFN Exposed Pad	24-VQFN (5.5x3.5)

About Logic Translators & Level Shifters

What are Logic Translators & Level Shifters?

Logic Translators

Logic translators, also known as level shifters or voltage level translators, are essential components in digital circuits that facilitate communication between devices operating at different voltage levels. These devices ensure compatibility by converting signal levels from one logic family to another, allowing seamless data exchange across systems with varying voltage requirements. Logic translators work by adjusting the voltage level of input signals to match the required output level, using transistors and other semiconductor components to achieve this conversion without distorting the signal integrity.

Level Shifters

Level shifters, also known as voltage level translators, are essential components in digital logic circuits that facilitate communication between different parts of a system operating at varying voltage levels. They work by converting signals from one voltage level to another, ensuring compatibility between components with different power supply requirements. The basic operating principle involves using transistors or other semiconductor devices to adjust the voltage level of a signal without altering its digital state, thus enabling seamless data transfer across different voltage domains.

Types of Logic Translators

1. Unidirectional Logic Translators

Unidirectional logic translators are designed to convert signals in a single direction, from a lower voltage to a higher voltage or vice versa. These are typically used in applications where data flows in one direction, such as interfacing a microcontroller with a peripheral device.

2. Bidirectional Logic Translators

Bidirectional logic translators can handle signal conversion in both directions, making them suitable for applications where data exchange occurs in both directions. These translators are often used in I2C or SMBus communication systems, where bidirectional data flow is essential.

3. Dual-Supply Logic Translators

Dual-supply logic translators operate with two separate power supply voltages, allowing them to interface between two different logic levels. These translators are ideal for systems with distinct power domains, ensuring compatibility without requiring additional components.

4. Auto-Direction Sensing Logic Translators

Auto-direction sensing logic translators automatically detect the direction of data flow and adjust accordingly. This feature simplifies design and reduces the need for additional control signals, making them suitable for complex systems with dynamic data flow requirements.

Types of Level Shifters

1. Unidirectional Level Shifters

Unidirectional level shifters are designed to convert signals in one direction only, from a lower voltage to a higher voltage or vice versa. They are commonly used in applications where data flows in a single direction, such as interfacing a low-voltage microcontroller with a higher voltage peripheral.

2. Bidirectional Level Shifters

Bidirectional level shifters allow signal conversion in both directions, making them ideal for applications where data needs to be sent and received between components operating at different voltage levels. These shifters are often used in I2C and SPI communication protocols, where bidirectional data flow is required.

3. Dual-Supply Level Shifters

Dual-supply level shifters use two separate power supplies to accommodate different voltage levels on each side of the shifter. This type is particularly useful in systems where the voltage levels are not fixed and may vary depending on the operating conditions.

4. Auto-Direction Sensing Level Shifters

These level shifters automatically detect the direction of data flow and adjust the signal conversion accordingly. They are highly versatile and reduce the need for additional control signals, making them suitable for complex systems with dynamic data flow requirements.

How to choose Logic Translators?

When selecting logic translators, several key parameters should be considered:

Voltage Range: Ensure the translator supports the voltage levels of both the input and output devices.
Data Rate: Choose a translator that can handle the required data transfer speed without signal degradation.
Directionality: Determine if unidirectional or bidirectional translation is needed based on the application.
Power Consumption: Consider the power efficiency, especially in battery-operated devices.
Package Type: Select a package that fits the physical design constraints of your system.

To evaluate product quality and reliability, review supplier datasheets, customer reviews, and industry certifications. Consider environmental factors such as temperature range and humidity, and ensure proper installation to prevent signal loss or interference.

How to choose Level Shifters?

When selecting level shifters, consider the following key parameters:

Voltage Range: Ensure the level shifter supports the voltage levels of both the input and output signals.
Data Rate: Choose a level shifter that can handle the required data transfer speed without signal degradation.
Directionality: Determine whether unidirectional or bidirectional signal conversion is needed.
Power Consumption: Evaluate the power efficiency of the level shifter, especially in battery-powered applications.
Package Type: Consider the physical size and mounting type to ensure compatibility with your design.

To evaluate product quality and reliability, review supplier datasheets, customer reviews, and industry certifications. Consider environmental factors such as temperature range and electromagnetic interference, and ensure proper installation to maintain signal integrity.

Applications of Logic Translators & Level Shifters

Logic Translators and Level Shifters are essential components in modern electronic systems, facilitating communication between devices operating at different voltage levels. These components ensure seamless data transfer and signal integrity across diverse platforms, making them indispensable in various industries. Below, we explore the applications of Logic Translators and Level Shifters across five key sectors.

1. Consumer Electronics

In the consumer electronics industry, Logic Translators and Level Shifters are crucial for devices like smartphones, tablets, and laptops. These components enable communication between microcontrollers and peripheral devices that operate at different voltage levels. For instance, a smartphone's processor might operate at 1.8V, while its sensors and memory modules require 3.3V. Logic Translators ensure that these components can communicate effectively without damaging the circuitry.

2. Automotive Industry

The automotive sector relies heavily on Logic Translators and Level Shifters to manage the complex electronic systems within modern vehicles. These components are used in engine control units (ECUs), infotainment systems, and advanced driver-assistance systems (ADAS). They facilitate communication between high-voltage systems, like battery management units, and low-voltage digital control systems, ensuring reliable and safe vehicle operation.

3. Industrial Automation

In industrial automation, Logic Translators and Level Shifters play a pivotal role in factory automation systems, robotics, and process control. These components enable communication between programmable logic controllers (PLCs) and sensors or actuators that operate at different voltage levels. This ensures accurate data acquisition and control, enhancing the efficiency and reliability of automated processes.

4. Telecommunications

The telecommunications industry utilizes Logic Translators and Level Shifters in network infrastructure, such as base stations and routers. These components facilitate the integration of various communication protocols and standards, allowing equipment to interface with different voltage levels. This capability is vital for maintaining signal integrity and ensuring seamless data transmission across networks.

5. Medical Devices

In the medical field, Logic Translators and Level Shifters are integral to the design of diagnostic equipment, patient monitoring systems, and wearable health devices. These components ensure that sensitive medical sensors can communicate with processing units without interference or data loss, even when operating at different voltage levels. This reliability is crucial for accurate diagnostics and patient safety.

In conclusion, Logic Translators and Level Shifters are versatile components that bridge the gap between different voltage domains, ensuring efficient and reliable communication across a wide range of applications. Their role in modern electronics is indispensable, driving innovation and enhancing performance across various industries.