Interface - Modems - ICs and Modules

Part Number	Description / PDF	Quantity
R6795-12	CONEXANT R6795 K56 HCF MODEM IC	0
PLF2800EV1.2-INF IR (Infineon Technologies)	PURPLE L2+ ETHERNET SWITCH	0
SI2435-D3-FTR Silicon Labs	IC ISOMODEM SYSTEM-SIDE 24TSSOP	0
PCT304W-C	CONEXANT HSP AC LINK MODEM IC	0
R6775-13	CONEXANT R6775 ACFL MODEM IC	0
PCT303A-C	CONEXANT HSP AC LINK MODEM IC	0
SI2535-F-FSR Silicon Labs	IC CLOCK MODEM FAX ISO 16SOIC	0
R6789-22	CONEXANT R6789 USB MODEM IC	0
73M2901CL-IGVR Analog Devices, Inc.	73M2901 SINGLE-CHIP MODEM	2000
R6790-22	CONEXANT R6790 ACF2 MODEM IC	0
HSP303D-TR	CONEXANT HSP30 HSP PCI MODEM IC	0
R6785-25	CONEXANT R6785 ACF2 MODEM IC	0
PMB9647VV2.0	COSIC MODEM KDECT	100129
P9373-12	P9373-12 - SMARTACFL MODEM	0
PSB8305VV1.1	XWAY WAV300 WI-FI CHIPSET	0
CMX868AD2-TR1K CML Microcircuits	V.22BIS MODEM	1000
SI2435-F-FT Silicon Labs	IC ISOMODEM SYSTEM-SIDE 24TSSOP	0
R6758-15	CONEXANT R6758 FAX 14400 IC	0
CX81801-63	MODEM, CMOS, PDSO28	1613
CX06835-25	CX06835	0

Interface - Modems - ICs and Modules

1. Overview

Interface modems ICs and modules are semiconductor devices that enable data communication between digital systems and analog transmission media. They convert digital signals to analog waveforms (modulation) and vice versa (demodulation), ensuring protocol compatibility across wired/wireless networks. These components are critical in telecommunications, industrial automation, IoT ecosystems, and embedded systems, forming the backbone of modern connected infrastructure.

2. Main Types and Functional Classification

Type	Functionality	Application Example
RS-232 Transceivers	Convert TTL/CMOS logic to RS-232 voltage levels for point-to-point communication	Serial ports in industrial controllers
RS-485/422 ICs	Support multi-drop differential signaling for noise-immune long-distance communication	Factory automation networks
CAN Controllers	Implement Controller Area Network protocol for vehicle bus systems	Automotive ECUs, robotics
USB Interface ICs	Bridge USB protocols with microcontrollers or peripheral devices	USB-to-serial converters
Ethernet PHYs	Physical layer transceivers for IEEE 802.3 standards	Industrial Ethernet switches
Wireless Modems	Support GSM/CDMA/LTE/5G protocols with RF front-ends	Telematics, remote monitoring

3. Structure and Composition

Typical components include:

Signal conversion circuits (ADC/DAC, level shifters)
Protocol processing engines (UART, SPI, I2C interfaces)
Power management modules (voltage regulators, LDOs)
Electrostatic discharge (ESD) protection structures
Package types: DIP, SOIC, QFN, BGA

4. Key Technical Specifications

Parameter	Importance
Data Rate	Determines communication speed (e.g., 10Gbps Ethernet PHYs)
Signal Integrity	Measured through jitter and noise immunity
Protocol Compatibility	Ensures adherence to standards (IEEE 802.11, 3GPP)
Power Consumption	Critical for battery-powered IoT devices
Operating Temperature	Industrial (-40 C to +85 C) vs. commercial range
Package Size	Affects PCB integration complexity

5. Application Fields

Industrial Automation: PLCs, SCADA systems
Telecommunications: 5G base stations, fiber optic transceivers
Automotive: CAN-FD networks, V2X communication modules
Consumer Electronics: Smart home gateways, wearables
Medical Devices: Remote patient monitoring systems

6. Leading Manufacturers and Products

Manufacturer	Representative Product
Texas Instruments	MAX3232 (RS-232 Transceiver)
STMicroelectronics	STMFD CAN FD Controller
Nordic Semiconductor	nRF52840 (Bluetooth 5.2 SoC)
Sierra Wireless	AirPrime EM7455 (LTE-A Module)
Analog Devices	ADM2483 (Isolated RS-485 Transceiver)

7. Selection Guidelines

Key considerations:

Match protocol standards with system requirements
Verify voltage level compatibility (e.g., 1.8V vs. 5V logic)
Evaluate thermal management needs
Assess certification requirements (FCC, CE, ISO 26262)
Balance cost vs. performance metrics

8. Industry Trends

Migration to high-speed SerDes interfaces (PCIe 5.0, USB4)
Integration of AI acceleration in modem SoCs
Expansion of 5G mmWave and Open RAN architectures
Adoption of Time-Sensitive Networking (TSN) in industrial Ethernet
Development of ultra-low-power wake-on-radio capabilities