Logic - Translators, Level Shifters

Part Number	Description / PDF	Quantity
MAX3379EEBC-T Analog Devices, Inc.	QUAD LOW-VOLT LEVEL TRANSLATOR	5000
MAX3390EEUD Analog Devices, Inc.	DUAL LOW-VOLT LEVEL TRANSLATOR	0
MAX3002EUP Analog Devices, Inc.	8-CH LEVEL TRANSLATOR	58
LTC1556IGN#TRPBF Analog Devices, Inc.	IC TRNSLTR BIDIRECTIONAL 20SSOP	0
MAX3007EBP Analog Devices, Inc.	8-CH LEVEL TRANSLATOR	0
ADG3233BRM-REEL7 Analog Devices, Inc.	LOGIC LEVEL TRANSLATION SWITCH	5000
MAX13108EEBX Analog Devices, Inc.	16-CH LOGIC-LEVEL TRANSLATOR	1995
LTC1555IGN Analog Devices, Inc.	IC TRNSLTR BIDIRECTIONAL 16SSOP	32
MAX14595EWA+T Analog Devices, Inc.	DUAL-CH LOGIC-LEVEL TRANSLATOR	13645
LTC1555LEGN-1.8#PBF Analog Devices, Inc.	IC TRNSLTR BIDIRECTIONAL 16SSOP	0
LTC1555LEGN#TRPBF Analog Devices, Inc.	IC TRNSLTR BIDIRECTIONAL 16SSOP	0
MAX3374EEBL Analog Devices, Inc.	DUAL LOW-VOLT LEVEL TRANSLATOR	632
ADG3233BRMZ Analog Devices, Inc.	IC TRNSLTR BIDIRECTIONAL 8MSOP	458
MAX3343EEUD Analog Devices, Inc.	USB LEVEL TRANSLATOR	16453
ADG3232BRJ-REEL7 Analog Devices, Inc.	2:1 MULTIPLEXER LEVEL TRANSLATOR	22844
ADG3308BCBZ-1-REEL Analog Devices, Inc.	IC TRNSLTR BIDIRECTIONAL 20WLCSP	0
ADG3304SRU-EP-RL7 Analog Devices, Inc.	4 CHANNEL LOGIC LEVEL TRANSLATOR	0
ADG3233BRJ-REEL7 Analog Devices, Inc.	LOGIC LEVEL TRANSLATION SWITCH	88262
ADG3231BRJ-REEL7 Analog Devices, Inc.	SINGLE-CHANNEL LEVEL TRANSLATOR	54221
MAX3340EEBE Analog Devices, Inc.	INTERFACE CIRCUIT, PBGA16	2093

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)