Logic - Translators, Level Shifters

Part Number	Description / PDF	Quantity
NXB0102GTX Nexperia	ANALOG & LOGIC ICS	0
MC100ELT28DTG	PECL-TTL/TTL-PECL TRANSLATOR	3128
CD4504BMG4 Texas Instruments	CD4504B CMOS HEX VOLTAGE-LEVEL S	760
GTL2002D,112 NXP Semiconductors	IC XLATR 2BIT BI-DIREC 8SOIC	2779
SN10KHT5542DW Texas Instruments	TTL TO ECL TRANSLATOR	762
MAX3002EUP+ Maxim Integrated	IC TRNSLTR BIDIRECTIONAL 20TSSOP	100
74AVCH1T45DCKRE4 Texas Instruments	IC TRNSLTR BIDIRECTIONAL SC70-6	0
ADG3308BRUZ Analog Devices, Inc.	IC TRNSLTR BIDIRECTIONAL 20TSSOP	147
MC10EPT20DR2G	TTL/CMOS TO PECL TRANSLATOR	21549
TXB0108YZPR Texas Instruments	IC TRNSLTR BIDIRECTIONAL 20DSBGA	15174
MC10H602FNG	TTL TO ECL TRANSLATOR	12323
NLVSX4373DR2G Sanyo Semiconductor/ON Semiconductor	IC TRNSLTR BIDIRECTIONAL 8SO	0
LSF0108PWR Texas Instruments	IC TRNSLTR BIDIRECTIONAL 20TSSOP	0
NTB0104BQ,115 NXP Semiconductors	IC TRNSLTR BIDIR 14DHVQFN	0
MAX6621AUB+ Maxim Integrated	IC TRNSLTR UNIDIRECTIONAL 10UMAX	1791800
MAX3001EETP+ Analog Devices, Inc.	PLUS 1.2V TO PLUS 5.5V, PLUS MIN	9733
NB6L16DG	LOW SKEW CLOCK DRIVER, 6L SERIES	12489
MAX13103EEBX-T Analog Devices, Inc.	16-CH LOGIC-LEVEL TRANSLATOR	2500
LSF0102DCUR Texas Instruments	IC TRNSLTR BIDIRECTIONAL US8	0
NXB0108BQ-Q100X Nexperia	NXB0108BQ-Q100/SOT764/DHVQFN20	3000

Logic - Translators, Level Shifters

1. Overview

Logic translators and level shifters are semiconductor devices that enable signal compatibility between circuits operating at different voltage levels. These ICs ensure reliable data transmission by converting logic signals from one voltage domain to another, maintaining signal integrity in mixed-voltage systems. Their importance has grown with the proliferation of low-voltage CMOS technologies and multi-rail power architectures in modern electronics.

2. Main Types and Functional Classification

Type	Functional Characteristics	Application Examples
Single-direction translators	Unidirectional voltage conversion with isolation	SPI interface between 3.3V FPGA and 1.8V sensors
Bi-directional translators	Automatic direction detection, dual-voltage I/O	I2C bus bridging between 5V microcontroller and 2.5V EEPROM
Multi-channel level shifters	Parallel conversion of multiple signals (4-32 channels)	Memory interface between SoC and DDR4 SDRAM modules
Direction-controlled translators	External control pin for signal direction selection	UART level conversion in industrial communication modules

3. Structure and Composition

Typical devices feature a monolithic CMOS structure with dual power supply inputs (VCCA and VCCB). Physical components include:

Dual-supply MOSFET pairs for voltage translation
Integrated clamp circuits for ESD protection
Direction control logic (for bidirectional types)
Channel-specific enable/disable circuitry

Common package types: TSSOP (14-48 pins), QFN (20-64 pins), WLCSP (1.5 1.5mm ultra-compact).

4. Key Technical Specifications

Parameter	Significance
Voltage range (1.2V-5.5V)	Determines compatibility with different logic families
Conversion rate (100Mbps-1.2Gbps)	Limits maximum operating frequency
Channel count (1-32)	Impacts system integration density
Propagation delay (2-20ns)	Affects timing critical applications
Quiescent current (1-100 A)	Power efficiency in battery-powered systems

5. Application Areas

Key industries include:

Telecommunications: 5G baseband processors interfacing with RF front-ends
Industrial automation: PLC modules connecting 24V sensors to 3.3V MCUs
Consumer electronics: Smartphone PMIC to application processor communication
Automotive systems: CAN-FD transceiver voltage adaptation
IoT devices: Sensor hub interfacing between different voltage rail components

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Features
TI (Texas Instruments)	TXB0108	8-channel, 1.2-3.6V to 1.65-5.5V translation, auto-direction detection
NXP Semiconductors	LTC2850	3.3/5V dual supply, 15kV ESD protection, RS485/UART interface
ON Semiconductor	NXU408	4-channel, 0.9-5.5V range, sub-1ns propagation delay
STMicroelectronics	L6470	Stepper motor driver with integrated level shifting for industrial automation

7. Selection Guidelines

Key considerations:

Match supply voltage ranges with source/target systems
Ensure conversion rate meets timing requirements
Choose appropriate channel density to minimize PCB area
For bidirectional buses, select devices with automatic direction sensing
Consider thermal performance for high-current applications
Evaluate ESD protection levels for industrial environments

8. Industry Trends

Development directions include:

Voltage scaling down to 0.8V core operation
Integration with signal conditioning functions
Increased adoption of capacitive isolation technology
Advanced packaging (3D TSV, fan-out WLP)
Protocol-aware smart translation (I3C, PCIe 6.0)