Logic - Universal Bus Functions

Part Number	Description / PDF	Quantity
74ALVCH16600DGGS Nexperia	IC UNIV BUS TXRX 18BIT 56TSSOP	0
SN74ALVCH162601GR Texas Instruments	SN74ALVCH162601 18-BIT UNIVERSAL	40147
74FCT162H501CTPVC Texas Instruments	REGISTERED BUS TRANSCEIVER	20060
SN74ALVCH162601DL Texas Instruments	IC UNIV BUS TXRX 18BIT 56SSOP	340
SN74AVC16269DGGR Texas Instruments	BUS EXCHANGER	10000
SN74ABT16600DLR Texas Instruments	REGISTERED BUS TRANSCEIVER	3000
MAX4121CSA+ Analog Devices, Inc.	VIDEO SWITCHES/XPOINT	0
SN74ALVC162334DL Texas Instruments	BUS DRIVER	12276
SN74ALVC162835DLR Texas Instruments	BUS DRIVER	1000
NLVAC157DR2G	MUX 1-ELEMENT CMOS 8-IN	7500
SN74LVT16501DLR Texas Instruments	REGISTERED BUS TRANSCEIVER	13022
74LVTH16501DLRG4 Texas Instruments	IC UNIV BUS TXRX 18BIT 56SSOP	0
74HC299D,653 Nexperia	IC UNIV SHIFT REGISTER 20SOIC	0
SN74ABT162601DGGR Texas Instruments	IC UNIV BUS TXRX 18BIT 56TSSOP	0
74ALVCH162601DGGS Nexperia	IC UNIV BUS TXRX 18BIT 56TSSOP	0
SN74LVTH18511DGGR Texas Instruments	BOUNDARY SCAN TRANSCEIVER	4000
SN74LVT16835DGGR Texas Instruments	BUS DRIVER, LVT SERIES	17880
SN74ALVC16835GQLR Texas Instruments	BUS DRIVER	8000
SN74AUC16501DGGR Texas Instruments	REGISTERED BUS TRANSCEIVER	4000
SN74ALVCH16282DBBR Texas Instruments	BUS EXCHANGER, ALVC/VCX/A SERIES	19500

Logic - Universal Bus Functions

1. Overview

Universal Bus Function ICs are logic devices designed to manage data transfer between different components in electronic systems. They provide critical interface capabilities for voltage level translation, signal buffering, bus arbitration, and protocol conversion. These ICs are essential in modern electronics for enabling compatibility between devices with different electrical and logical characteristics.

2. Major Types and Functional Classification

Type	Functional Characteristics	Application Examples
Bus Transceivers	Dual-directional data transfer with 3-state I/O ports	Memory interfaces, PCI Express buses
Bus Buffers	Signal amplification and isolation	Industrial control backplanes
Level Translators	Voltage conversion between 1.2V-5V domains	Multivoltage SoC interfaces
Bus Controllers	Protocol management and arbitration logic	USB host controllers, CAN bus systems

3. Structure and Composition

Typical physical structure includes:

Plastic/ceramic package (TSSOP, QFN, BGA variants)
Multiple channel configurations (4/8/16-bit)
Internal components: logic gates, buffer amplifiers, clamping diodes
ESD protection structures on I/O pins
Power rails with decoupling capacitors

4. Key Technical Specifications

Parameter	Significance
Voltage Range (1.2V-5.5V)	Defines compatibility with host systems
Data Rate (up to 500Mbps)	Determines maximum bus throughput
Drive Strength ( 24mA)	Affects signal integrity over long traces
Propagation Delay (<2ns)	Critical for timing-sensitive applications
ESD Rating ( 8kV HBM)	Reliability indicator in industrial environments

5. Application Areas

Major industries include:

Telecommunications (5G base stations, optical modules)
Automotive (CAN-FD interfaces, ADAS systems)
Industrial Automation (PLC backplanes, motor controllers)
Consumer Electronics (smartphones, SSD interfaces)

6. Leading Manufacturers and Products

Manufacturer	Product Series	Key Features
TI	SN74LVC16T245	1.2V-3.6V operation, 64-pin TSSOP
NXP	74ALVC164245	2.3V-3.6V, 24mA drive current
STMicro	LVC1G125	Single-channel buffer in SOT23-5
Intel	I3TBUF0242	1.7V-5.5V, hot-swap capability

7. Selection Recommendations

Key considerations:

Voltage compatibility with existing bus standards
Required data bandwidth and timing margins
Package size constraints (BGA vs TSSOP)
Temperature rating for industrial/military use
Cost vs. integrated features trade-off

8. Industry Trends

Current development directions include:

Migration to 10+ Gbps data rates for 5G applications
Integration with protocol-specific accelerators
Adoption of advanced packaging (3D stacking)
Enhanced EMI reduction techniques
Support for emerging standards like CXL and UCIe