Logic - Universal Bus Functions

Part Number	Description / PDF	Quantity
74VCXF162835MTX	BUS DRIVER	8886
CY74FCT162500CTPVC Texas Instruments	REGISTERED BUS TRANSCEIVER	320
SN74ALVCHR16269AL Texas Instruments	BUS EXCHANGER, ALVC/VCX/A SERIES	13510
SN74ALVCH32501KR Texas Instruments	REGISTERED BUS TRANSCEIVER	8919
SN74VMEH22501AGQLR Texas Instruments	REGISTERED BUS TRANSCEIVER	29000
74VCX16501MTDX	REGISTERED BUS TRANSCEIVER	925
SN74LVTH18512DGGR Texas Instruments	IC SCAN TEST UNIV TXRX 64TSSOP	1032
SN74ALVC16334DL Texas Instruments	SN74ALVC16334 16-BIT UNIVERSAL B	25064
74ALVC16835PFG	3.3V 18-BIT UNIVERSAL BUS DRIVER	8518
SN74ALVCH16835DGVR Texas Instruments	SN74ALVCH16835 18-BIT UNIVERSAL	5400
SN74ALVCH16903DL Texas Instruments	SN74ALVCH16903 3.3-V 12-BIT UNIV	8060
74FCT162500CTPVCT Texas Instruments	REGISTERED BUS TRANSCEIVER	4000
74ALVCH32501ZKFR Texas Instruments	SN74ALVCH32501 36-BIT UNIVERSAL	80000
SN74AVC16334DGGR Texas Instruments	SN74AVC16334 16-BIT UNIVERSAL BU	16000
SN74ALVCH16269DLR Texas Instruments	BUS EXCHANGER, ALVC/VCX/A SERIES	4000
74ALVCH16601DGGS Nexperia	IC UNIV BUS TXRX 18BIT 56TSSOP	0
SN74ALVTH16601GR Texas Instruments	SN74ALVTH16601 2.5-V/3.3-V 18-BI	2860
SCAN16512ASM	BOUNDARY SCAN BUS TRANSCVR	3232
74LVTH16835MTD	BUS DRIVER, LVT SERIES	1912
74HC299N,652 NXP Semiconductors	PARALLEL IN PARALLEL OUT	1173

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