OTHER Modems 13

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Part	Manufacturer	Telecom IC Type	Temperature Grade	Terminal Form	No. of Terminals	Package Code	Package Shape	Package Body Material	Surface Mount	No. of Functions	Technology	Nominal Negative Supply Voltage	Maximum Supply Current	Nominal Supply Voltage	Power Supplies (V)	Package Style (Meter)	Package Equivalence Code	Sub-Category	Terminal Pitch	Maximum Operating Temperature	Minimum Operating Temperature	Terminal Finish	Terminal Position	Data Rate	JESD-30 Code	Moisture Sensitivity Level (MSL)	Maximum Seated Height	Width	Qualification	Additional Features	JESD-609 Code	Maximum Time At Peak Reflow Temperature (s)	Peak Reflow Temperature (C)	Length
AD9971	Analog Devices	MODEM-SUPPORT CIRCUIT	OTHER	NO LEAD	40	QCCN	SQUARE	UNSPECIFIED	YES	1				1.8 V		CHIP CARRIER				85 Cel	-25 Cel		QUAD		S-XQCC-N40
AD1801JS	Analog Devices	MODEM-DATA/FAX/VOICE	OTHER	GULL WING	128	FQFP	RECTANGULAR	PLASTIC/EPOXY	YES	1				5 V		FLATPACK, FINE PITCH			.5 mm	85 Cel	0 Cel	TIN LEAD	QUAD	1.4 Mbps	R-PQFP-G128		3.4 mm	14 mm	Not Qualified		e0			20 mm
AD1801JST	Analog Devices	MODEM-DATA/FAX/VOICE	OTHER	GULL WING	128	LFQFP	RECTANGULAR	PLASTIC/EPOXY	YES	1				5 V		FLATPACK, LOW PROFILE, FINE PITCH			.5 mm	85 Cel	0 Cel	TIN LEAD	QUAD	1.4 Mbps	R-PQFP-G128		1.6 mm	14 mm	Not Qualified		e0			20 mm
AD9970	Analog Devices	MODEM-SUPPORT CIRCUIT	OTHER	NO LEAD	32	QCCN	SQUARE	UNSPECIFIED	YES	1				1.8 V		CHIP CARRIER				85 Cel	-25 Cel		QUAD		S-XQCC-N32
AD1801JST-REEL	Analog Devices	MODEM-DATA/FAX/VOICE	OTHER	GULL WING	128	LFQFP	RECTANGULAR	PLASTIC/EPOXY	YES	1				5 V		FLATPACK, LOW PROFILE, FINE PITCH			.5 mm	85 Cel	0 Cel	TIN LEAD	QUAD	1.4 Mbps	R-PQFP-G128		1.6 mm	14 mm	Not Qualified		e0			20 mm
AMIS30585AGA	Onsemi	MODEM	OTHER	J BEND	28	QCCJ	SQUARE	PLASTIC/EPOXY	YES	1			.08 mA	3.3 V	3.3	CHIP CARRIER	LDCC28(UNSPEC)	Modems		70 Cel	-25 Cel		QUAD	.00144 Mbps	S-PQCC-J28				Not Qualified			NOT SPECIFIED	NOT SPECIFIED
TS7515IP	STMicroelectronics	MODEM	OTHER	THROUGH-HOLE	28	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1		-5 V	30 mA	5 V	+-5	IN-LINE	DIP28,.6	Modems	2.54 mm	85 Cel	-25 Cel	TIN LEAD	DUAL	.0012 Mbps	R-PDIP-T28			15.24 mm	Not Qualified		e0			36.83 mm
STLC60134S	STMicroelectronics	MODEM-SUPPORT CIRCUIT	OTHER	GULL WING	64	LFQFP	SQUARE	PLASTIC/EPOXY	YES	1	CMOS			3.3 V	3/3.3,3.3	FLATPACK, LOW PROFILE, FINE PITCH	QFP64,.47SQ,20	Other Telecom ICs	.5 mm	80 Cel	-40 Cel	TIN LEAD	QUAD	.008192 Mbps	S-PQFP-G64		1.6 mm	10 mm	Not Qualified	DATA RATE: 640K BITS/SEC UPSTREAM	e0			10 mm
TDA8263HN/C1,518	NXP Semiconductors	MODEM-DEMODULATOR	OTHER	NO LEAD	32	HVQCCN	SQUARE	PLASTIC/EPOXY	YES	1				3.3 V		CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE			.5 mm	85 Cel	-20 Cel	NICKEL PALLADIUM GOLD	QUAD		S-PQCC-N32	1	1 mm	5 mm	Not Qualified		e4			5 mm
TDA8262HN	NXP Semiconductors	MODEM-DEMODULATOR	OTHER	NO LEAD	32	HVQCCN	SQUARE	PLASTIC/EPOXY	YES	1				3.3 V	3.3	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	LCC32,.2SQ,20	Other Telecom ICs	.5 mm	85 Cel	-20 Cel		QUAD		S-PQCC-N32		1 mm	5 mm	Not Qualified					5 mm
TDA8262HN/C1,118	NXP Semiconductors	MODEM-DEMODULATOR	OTHER	NO LEAD	32	HVQCCN	SQUARE	PLASTIC/EPOXY	YES	1				3.3 V		CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE			.5 mm	85 Cel	-20 Cel	NICKEL PALLADIUM GOLD	QUAD		S-PQCC-N32	1	1 mm	5 mm	Not Qualified		e4			5 mm
TDA8263HN	NXP Semiconductors	MODEM-DEMODULATOR	OTHER	NO LEAD	32	HVQCCN	SQUARE	PLASTIC/EPOXY	YES	1				3.3 V		CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE			.5 mm	85 Cel	-20 Cel		QUAD		S-PQCC-N32		1 mm	5 mm	Not Qualified					5 mm
MC145745FW	NXP Semiconductors	MODEM	OTHER	GULL WING	28	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	1	CMOS			5 V	3.6	SMALL OUTLINE	SOP28,.4	Modems	1.27 mm	85 Cel	-30 Cel	TIN LEAD	DUAL	.0012 Mbps	R-PDSO-G28		2.65 mm	7.51 mm	Not Qualified	DATA RATE MIN:0.3BPS	e0			17.915 mm

Modems

A modem, short for modulator-demodulator, is a device used to convert digital signals into analog signals for transmission over telephone lines or other analog communication channels. Modems can also receive and decode analog signals and convert them back into digital signals. They are used to provide internet connectivity, transmit data over long distances, and connect to remote devices.

Modems use a technique called modulation to convert digital signals into analog signals that can be transmitted over an analog communication channel. This involves changing the amplitude, frequency, or phase of the signal in response to the digital data being transmitted. At the receiving end, the modem uses a technique called demodulation to convert the analog signal back into a digital signal that can be processed by the receiving device.

Modems also use various modulation and demodulation techniques to ensure reliable and efficient transmission of data. These techniques include phase-shift keying (PSK), quadrature amplitude modulation (QAM), and frequency-shift keying (FSK), among others. The choice of modulation technique depends on the specific application and the characteristics of the communication channel being used.

There are several types of modems, including dial-up modems, cable modems, DSL modems, and wireless modems. Dial-up modems are the oldest type of modem and use the telephone network to transmit data at relatively slow speeds. Cable modems and DSL modems are used to provide high-speed internet connectivity over cable and phone lines, respectively. Wireless modems, also known as cellular modems, use wireless communication protocols to provide internet connectivity over cellular networks.

Modems are an essential technology for modern communication systems, enabling the transmission of data over a variety of communication channels and protocols. As the technology continues to evolve, we can expect to see even more advanced and innovative modems in the future.