Logic - Translators, Level Shifters

Part Number	Description / PDF	Quantity
74AVCH1T45DCKRG4 Texas Instruments	IC TRNSLTR BIDIRECTIONAL SC70-6	0
MC10H351FNR2G	TTL/NMOS TO ECL TRANSLATOR	2001
SN74AVC16T245DGG Texas Instruments	LOGIC GATES AND INVERTERS	548
SY100S324JY-TR Roving Networks / Microchip Technology	HEX TTL-TO-ECL TRANSLATOR	1229
FXMAR2102UMX-F106 Sanyo Semiconductor/ON Semiconductor	IC TRNSLTR BIDIRECTIONAL 8MLP	711165000
NXB0101GSH Nexperia	ANALOG & LOGIC ICS	5069
74AUP1T57GS,132 Nexperia	MAJORITY LOGIC GATE, AUP/ULP/V S	1330000
SN74AVCA406EZQSR Texas Instruments	SN74AVCA406E MMC AND SD CARD VOL	12500
74LVCH16T245DLG4 Texas Instruments	IC TRNSLTR BIDIRECTIONAL 48SSOP	0
PCA9306DCUR Texas Instruments	IC TRNSLTR BIDIRECTIONAL 8VSSOP	0
SY89327LMG-TR Roving Networks / Microchip Technology	IC TRNSLTR UNIDIRECTIONAL 8MLF	1811
SY100ELT22LZG Roving Networks / Microchip Technology	IC TRNSLTR UNIDIRECTIONAL 8SOIC	501
CD4504BM Texas Instruments	IC TRNSLTR UNIDIRECTIONAL 16SOIC	1373
ADG3231BRYZ-REEL7 Analog Devices, Inc.	SINGLE-CHANNEL LEVEL TRANSLATOR	32016
74LVX3245QSCX Sanyo Semiconductor/ON Semiconductor	IC TRNSLTR BIDIRECTIONAL 24QSOP	43735000
SN74LVCC4245ADW Texas Instruments	IC TRNSLTR BIDIRECTIONAL 24SOIC	164
MAX13058EEWG+T Analog Devices, Inc.	INTERFACE CIRCUIT	12384
74LVC1T45GW-Q100H Nexperia	IC TRNSLTR BIDIRECTIONAL 6TSSOP	6753
SN74AVCA406ZQCR Texas Instruments	SN74AVCA406 MMC, SD, MEMORY STIC	114980
100324SCX	TTL TO ECL TRANSLATOR	1452

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)