Logic - Translators, Level Shifters

Part Number	Description / PDF	Quantity
MC100EPT24DG Sanyo Semiconductor/ON Semiconductor	IC TRNSLTR UNIDIRECTIONAL 8SOIC	5229792
ADG3308BCPZ-REEL Analog Devices, Inc.	IC TRNSLTR BIDIRECTIONAL 20LFCSP	2610
74AUP1T34GM-Q100X Nexperia	LOW-POWER DUAL SUPPLY TRANSLATIN	14990
MAX3378EEUD+T Maxim Integrated	IC TRNSLTR BIDIRECTIONAL 14TSSOP	5562
PCA9306TDCURQ1 Texas Instruments	IC TRNSLTR BIDIRECTIONAL 8VSSOP	19382
CD4504BPW Texas Instruments	IC TRNSLTR UNIDIR 16TSSOP	1509
TXS0108EQPWRQ1 Texas Instruments	IC TRNSLTR BIDIRECTIONAL 20TSSOP	0
SN100KT5541NT Texas Instruments	ECL TO TTL TRANSLATOR, 8 FUNC	2159
74AVC20T245DGG,118 Nexperia	IC TRNSLTR BIDIRECTIONAL 56TSSOP	1915
TC7SPN334L6X,LF Toshiba Electronic Devices and Storage Corporation	IC TRNSLTR UNIDIRECTIONAL 6MP6C	8638
ADG3233BRJZ-REEL7 Analog Devices, Inc.	IC TRNSLTR BIDIRECTIONAL SOT23-8	541
MC100EPT22DTG Sanyo Semiconductor/ON Semiconductor	IC TRNSLTR UNIDIRECTIONAL 8TSSOP	592
SY100EPT22VKG Roving Networks / Microchip Technology	IC TRNSLTR UNIDIRECTIONAL 8MSOP	166
SN74AUP1T98YFPR Texas Instruments	IC TRNSLTR UNIDIRECTIONAL 6DSBGA	3000
FXL2SD106BQX Sanyo Semiconductor/ON Semiconductor	IC TRNSLTR BIDIRECTIONAL 16DQFN	3803
PI4ULS5V106ZHDEX Zetex Semiconductors (Diodes Inc.)	INTERFACE ULS U-QFN3030-16	827
PCA9306DC1,125 NXP Semiconductors	IC TRNSLTR BIDIRECTIONAL 8VSSOP	19613
CD40109BQNSRQ1 Texas Instruments	IC TRNSLTR UNIDIRECTIONAL 16SO	5406
74AVC4TD245PW,118 Nexperia	IC TRNSLTR BIDIRECTIONAL 16TSSOP	1277
MAX13005EEBE+T Analog Devices, Inc.	LOW-VOLTAGE LEVEL TRANSLATOR	2500

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)