Logic - Translators, Level Shifters

Part Number	Description / PDF	Quantity
100325J-QMLV	100325 - ECL TO TTL TRANSLATOR,	77
MAX3393EEBC-T Analog Devices, Inc.	QUAD LOW-VOLT LEVEL TRANSLATOR	2357
ADG3304BCPZ-REEL7 Analog Devices, Inc.	IC TRNSLTR BIDIRECTIONAL 20LFCSP	3612
TXB0104QRGYRQ1 Texas Instruments	IC TRNSLTR BIDIRECTIONAL 14VQFN	1889
MAX3004EUP+T Maxim Integrated	IC TRNSLTR UNIDIR 20TSSOP	0
ASNT3010-PQB ADSANTEC	LVDS-CMOS-LVDS CONVERTER & SPLIT	88
LSF0102DPH Nexperia	LSF0102DP/SOT505/TSSOP8	0
74LVC4245ABQ,118 Nexperia	IC TRNSLTR BIDIR 24DHVQFN	3494
PI4ULS5V202Q1UEX Zetex Semiconductors (Diodes Inc.)	INTERFACE ULS MSOP-8K	138020000
CD40109BPW Texas Instruments	IC TRNSLTR UNIDIR 16TSSOP	441
74AUP1T58GM,132 Nexperia	IC LP CONFIG GATE V-XLATR 6XSON	0
MC10H124L	TTL TO ECL TRANSLATOR	0
MC14504BDG Sanyo Semiconductor/ON Semiconductor	IC TRNSLTR UNIDIRECTIONAL 16SOIC	2120
MC100LVELT23DTRG Sanyo Semiconductor/ON Semiconductor	IC TRNSLTR UNIDIRECTIONAL 8TSSOP	2450
SY10ELT21LZG Roving Networks / Microchip Technology	IC TRNSLTR UNIDIRECTIONAL 8SOIC	21
74AVC2T45DC,125 Nexperia	NOW NEXPERIA 74AVC2T45DC - BUS T	184405
SY55855VKG-TR Roving Networks / Microchip Technology	IC TRNSLTR UNIDIRECTIONAL 10MSOP	2
SN74ALVC164245DGGR Texas Instruments	IC TRNSLTR BIDIRECTIONAL 48TSSOP	10561
SN74LVCC4245ANSR Texas Instruments	SN74LVCC4245A OCTAL BUS TRANSCEI	1295
NLSX3013FCT1G	BUS DRIVER, 3013 SERIES, 1-FUNC,	63275

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)