LFQFP Bus Controllers 38

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Part	Manufacturer	Peripheral IC Type	Temperature Grade	Terminal Form	No. of Terminals	Package Code	Package Shape	Package Body Material	Surface Mount	Maximum Supply Voltage	Screening Level	Address Bus Width	Power Supplies (V)	Package Style (Meter)	Package Equivalence Code	Minimum Supply Voltage	Maximum Operating Temperature	Maximum Data Transfer Rate	Minimum Operating Temperature	Terminal Finish	Terminal Position	Maximum Seated Height	Width	Additional Features	External Data Bus Width	Maximum Clock Frequency	Maximum Time At Peak Reflow Temperature (s)	Peak Reflow Temperature (C)	Length	Technology	Maximum Supply Current	Nominal Supply Voltage	Sub-Category	Bus Compatibility	Terminal Pitch	JESD-30 Code	Moisture Sensitivity Level (MSL)	Qualification	Drive Interface Standard	JESD-609 Code
FT313HL-R	FTDI	BUS CONTROLLER, UNIVERSAL SERIAL BUS	INDUSTRIAL	GULL WING	64	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.63 V		16	3.3	FLATPACK, LOW PROFILE, FINE PITCH	QFP64,.47SQ,20	2.97 V	85 Cel		-40 Cel		QUAD	1.6 mm	10 mm		16	24 MHz	NOT SPECIFIED	NOT SPECIFIED	10 mm	CMOS		3.3 V	Bus Controllers		.5 mm	S-PQFP-G64		Not Qualified
FT313HL-T	FTDI	BUS CONTROLLER, UNIVERSAL SERIAL BUS	INDUSTRIAL	GULL WING	64	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.63 V		16	3.3	FLATPACK, LOW PROFILE, FINE PITCH	QFP64,.47SQ,20	2.97 V	85 Cel		-40 Cel		QUAD	1.6 mm	10 mm		16	24 MHz	NOT SPECIFIED	NOT SPECIFIED	10 mm	CMOS		3.3 V	Bus Controllers		.5 mm	S-PQFP-G64		Not Qualified
PCI2250PGFG4	Texas Instruments	BUS CONTROLLER, PCI	COMMERCIAL	GULL WING	176	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		32		FLATPACK, LOW PROFILE, FINE PITCH		3 V	70 Cel		0 Cel	NICKEL PALLADIUM GOLD	QUAD	1.6 mm	24 mm	DEVICE HAVING 32-BIT MULTIPLEXED PRIMARY AND SECONDARY ADDRESS AND DATA BUS.	32	33 MHz	30	260	24 mm	CMOS		3.3 V		CARDBUS; ISA; VGA	.5 mm	S-PQFP-G176	3			e4
PCI2030PGF	Texas Instruments	BUS CONTROLLER, PCI	COMMERCIAL	GULL WING	176	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		32	3.3,3.3/5	FLATPACK, LOW PROFILE, FINE PITCH	QFP176,1.0SQ,20	3 V	70 Cel		0 Cel		QUAD	1.6 mm	24 mm		32	33 MHz	NOT SPECIFIED	NOT SPECIFIED	24 mm	CMOS		3.3 V	Bus Controllers		.5 mm	S-PQFP-G176		Not Qualified
PCI4410PDV	Texas Instruments	BUS CONTROLLER, PCMCIA	COMMERCIAL	GULL WING	208	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		32	3.3,3.3/5	FLATPACK, LOW PROFILE, FINE PITCH	QFP208,1.2SQ,20	3 V	70 Cel	400 MBps	0 Cel		QUAD	1.6 mm	28 mm	ALSO REQUIRES 5V I/O SUPPLY	32	33.33 MHz	NOT SPECIFIED	NOT SPECIFIED	28 mm	CMOS		3.3 V	Bus Controllers	PCI	.5 mm	S-PQFP-G208		Not Qualified	IEEE 1394
HPC3130APGE	Texas Instruments	BUS CONTROLLER, PCI	COMMERCIAL	GULL WING	144	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		5	3.3,3.3/5	FLATPACK, LOW PROFILE, FINE PITCH	QFP144,.87SQ,20	3 V	70 Cel		0 Cel	NICKEL PALLADIUM GOLD	QUAD	1.6 mm	20 mm		8	66.66 MHz	30	260	20 mm	CMOS		3.3 V	Bus Controllers		.5 mm	S-PQFP-G144	2	Not Qualified		e4
PCI2040PGE	Texas Instruments	BUS CONTROLLER, PCI	COMMERCIAL	GULL WING	144	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		32	3.3,3.3/5	FLATPACK, LOW PROFILE, FINE PITCH	QFP144,.87SQ,20	3 V	70 Cel	160 MBps	0 Cel	NICKEL PALLADIUM GOLD	QUAD	1.6 mm	20 mm		32	33 MHz	30	260	20 mm	CMOS		3.3 V	Bus Controllers	PCI	.5 mm	S-PQFP-G144	1	Not Qualified		e4
PCI2050IPDV	Texas Instruments	BUS CONTROLLER, PCI	INDUSTRIAL	GULL WING	208	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		32	3.3,3.3/5	FLATPACK, LOW PROFILE, FINE PITCH	QFP208,1.2SQ,20	3 V	85 Cel		-40 Cel	NICKEL PALLADIUM GOLD	QUAD	1.45 mm	28 mm		32	33 MHz	30	260	28 mm	CMOS		3.3 V	Bus Controllers	PCI	.5 mm	S-PQFP-G208	1	Not Qualified		e4
TUSB5052PZ	Texas Instruments	BUS CONTROLLER, UNIVERSAL SERIAL BUS	COMMERCIAL	GULL WING	100	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.465 V		0	3.3	FLATPACK, LOW PROFILE, FINE PITCH	TQFP100,.63SQ	3.135 V	70 Cel	1.5 MBps	0 Cel	NICKEL PALLADIUM GOLD	QUAD	1.6 mm	14 mm		0	6 MHz	30	260	14 mm	CMOS		3.3 V	Bus Controllers		.5 mm	S-PQFP-G100	3	Not Qualified		e4
PCI1420PDVG4	Texas Instruments	BUS CONTROLLER, PCMCIA	COMMERCIAL	GULL WING	208	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		32	3.3,3.3/5	FLATPACK, LOW PROFILE, FINE PITCH	QFP208,1.2SQ,20	3 V	70 Cel	130 MBps	0 Cel	NICKEL PALLADIUM GOLD	QUAD	1.6 mm	28 mm		32	33 MHz	30	260	28 mm	CMOS		3.3 V	Bus Controllers	PCI	.5 mm	S-PQFP-G208	1	Not Qualified		e4
SAF1562HL/N2,557	NXP Semiconductors	BUS CONTROLLER, UNIVERSAL SERIAL BUS	INDUSTRIAL	GULL WING	100	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V	AEC-Q100	32	3.3	FLATPACK, LOW PROFILE, FINE PITCH	QFP100,.63SQ,20	3 V	85 Cel		-40 Cel	TIN	QUAD	1.6 mm	14 mm		32	12 MHz		260	14 mm	CMOS		3.3 V	Bus Controllers	PCI	.5 mm	S-PQFP-G100	3	Not Qualified		e3
FT2232D-TRAY	FTDI	BUS CONTROLLER, UNIVERSAL SERIAL BUS	INDUSTRIAL	GULL WING	48	LFQFP	SQUARE	PLASTIC/EPOXY	YES	5.25 V		0		FLATPACK, LOW PROFILE, FINE PITCH		4.35 V	85 Cel	1 MBps	-40 Cel	MATTE TIN	QUAD	1.6 mm	7 mm		0	6 MHz	30	260	7 mm	CMOS		5 V		I2C	.5 mm	S-PQFP-G48	3			e3
TUSB2077APTRG4	Texas Instruments	BUS CONTROLLER, UNIVERSAL SERIAL BUS	COMMERCIAL	GULL WING	48	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V			3.3	FLATPACK, LOW PROFILE, FINE PITCH	QFP48,.35SQ,20	3 V	70 Cel	12 MBps	0 Cel	NICKEL PALLADIUM GOLD	QUAD	1.6 mm	7 mm			48 MHz	30	260	7 mm	CMOS	40 mA	3.3 V	Bus Controllers		.5 mm	S-PQFP-G48	3	Not Qualified		e4
PCI4510PDV	Texas Instruments	BUS CONTROLLER, PCMCIA	COMMERCIAL	GULL WING	208	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		32	1.8,3.3	FLATPACK, LOW PROFILE, FINE PITCH	QFP208,1.2SQ,20	3 V	70 Cel	132 MBps	0 Cel		QUAD	1.6 mm	28 mm		32	24.576 MHz	NOT SPECIFIED	NOT SPECIFIED	28 mm	CMOS		3.3 V	Bus Controllers	PCI	.5 mm	S-PQFP-G208		Not Qualified
PCI7410PDV	Texas Instruments	BUS CONTROLLER, PCMCIA	COMMERCIAL	GULL WING	208	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		32	3.3,3.3/5	FLATPACK, LOW PROFILE, FINE PITCH	QFP208,1.2SQ,20	3 V	70 Cel	132 MBps	0 Cel		QUAD	1.6 mm	28 mm		32	24.576 MHz	NOT SPECIFIED	NOT SPECIFIED	28 mm	CMOS		3.3 V	Bus Controllers	PCI	.5 mm	S-PQFP-G208		Not Qualified
PCI7510PDV	Texas Instruments	BUS CONTROLLER, PCMCIA	COMMERCIAL	GULL WING	208	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		32	3.3,3.3/5	FLATPACK, LOW PROFILE, FINE PITCH	QFP208,1.2SQ,20	3 V	70 Cel	132 MBps	0 Cel		QUAD	1.6 mm	28 mm		32	24.576 MHz	NOT SPECIFIED	NOT SPECIFIED	28 mm	CMOS		3.3 V	Bus Controllers	PCI	.5 mm	S-PQFP-G208		Not Qualified
PCI7610PDV	Texas Instruments	BUS CONTROLLER, PCMCIA	COMMERCIAL	GULL WING	208	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		32	3.3,3.3/5	FLATPACK, LOW PROFILE, FINE PITCH	QFP208,1.2SQ,20	3 V	70 Cel	132 MBps	0 Cel		QUAD	1.6 mm	28 mm		32	24.576 MHz	NOT SPECIFIED	NOT SPECIFIED	28 mm	CMOS		3.3 V	Bus Controllers	PCI	.5 mm	S-PQFP-G208		Not Qualified
PCI2050BPDV	Texas Instruments	BUS CONTROLLER, PCI	COMMERCIAL	GULL WING	208	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		32	3.3,3.3/5	FLATPACK, LOW PROFILE, FINE PITCH	QFP208,1.2SQ,20	3 V	70 Cel		0 Cel	NICKEL PALLADIUM GOLD	QUAD	1.6 mm	28 mm		32	66 MHz	30	260	28 mm	CMOS		3.3 V	Bus Controllers	PCI	.5 mm	S-PQFP-G208	1	Not Qualified		e4
TSB12LV26TPZEP	Texas Instruments	BUS CONTROLLER, PCI	INDUSTRIAL	GULL WING	100	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		32		FLATPACK, LOW PROFILE, FINE PITCH		3 V	110 Cel	50 MBps	-40 Cel	NICKEL PALLADIUM GOLD	QUAD	1.6 mm	14 mm		32	33 MHz	30	260	14 mm	CMOS		3.3 V		PCI	.5 mm	S-PQFP-G100	3	Not Qualified	IEEE 1394; IEEE 1394A	e4
PCI1520IPDV	Texas Instruments	BUS CONTROLLER, PCMCIA	INDUSTRIAL	GULL WING	208	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		32	3.3,3.3/5	FLATPACK, LOW PROFILE, FINE PITCH	QFP208,1.2SQ,20	3 V	85 Cel		-40 Cel	NICKEL PALLADIUM GOLD	QUAD	1.6 mm	28 mm		32	33 MHz	30	260	28 mm	CMOS		3.3 V	Bus Controllers	PCI	.5 mm	S-PQFP-G208	3	Not Qualified	IEEE 1394	e4
PCI1520IPDVEP	Texas Instruments	BUS CONTROLLER, PCMCIA	INDUSTRIAL	GULL WING	208	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		32	3.3,3.3/5	FLATPACK, LOW PROFILE, FINE PITCH	QFP208,1.2SQ,20	3 V	85 Cel		-40 Cel	NICKEL PALLADIUM GOLD	QUAD	1.6 mm	28 mm		32	33.33 MHz	30	260	28 mm	CMOS		3.3 V	Bus Controllers	PCI	.5 mm	S-PQFP-G208	1	Not Qualified	IEEE 1394	e4
PCI2050BIPDV	Texas Instruments	BUS CONTROLLER, PCI	INDUSTRIAL	GULL WING	208	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		32	3.3,3.3/5	FLATPACK, LOW PROFILE, FINE PITCH	QFP208,1.2SQ,20	3 V	85 Cel		-40 Cel	NICKEL PALLADIUM GOLD	QUAD	1.6 mm	28 mm		32	66 MHz	30	260	28 mm	CMOS		3.3 V	Bus Controllers	PCI	.5 mm	S-PQFP-G208	1	Not Qualified		e4
PCI2050BIPDVG4	Texas Instruments	BUS CONTROLLER, PCI	INDUSTRIAL	GULL WING	208	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		32	3.3,3.3/5	FLATPACK, LOW PROFILE, FINE PITCH	QFP208,1.2SQ,20	3 V	85 Cel		-40 Cel	NICKEL PALLADIUM GOLD	QUAD	1.6 mm	28 mm		32	66 MHz	30	260	28 mm	CMOS		3.3 V	Bus Controllers	PCI	.5 mm	S-PQFP-G208	1	Not Qualified		e4
PCI1410APGEG4	Texas Instruments	BUS CONTROLLER, PCMCIA	COMMERCIAL	GULL WING	144	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		32	3.3,3.3/5	FLATPACK, LOW PROFILE, FINE PITCH	QFP144,.87SQ,20	3 V	70 Cel		0 Cel	NICKEL PALLADIUM GOLD	QUAD	1.6 mm	20 mm		32	33.33 MHz	30	260	20 mm	CMOS		3.3 V	Bus Controllers	PCI	.5 mm	S-PQFP-G144	2	Not Qualified		e4
PCI1510PGEG4	Texas Instruments	BUS CONTROLLER, PCMCIA	COMMERCIAL	GULL WING	144	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		32	3.3,3.3/5	FLATPACK, LOW PROFILE, FINE PITCH	QFP144,.87SQ,20	3 V	70 Cel	130 MBps	0 Cel	NICKEL PALLADIUM GOLD	QUAD	1.6 mm	20 mm		32	33 MHz	30	260	20 mm	CMOS		3.3 V	Bus Controllers	PCI	.5 mm	S-PQFP-G144	3	Not Qualified		e4
PCI1520PDVG4	Texas Instruments	BUS CONTROLLER, PCMCIA	COMMERCIAL	GULL WING	208	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		32	3.3,3.3/5	FLATPACK, LOW PROFILE, FINE PITCH	QFP208,1.2SQ,20	3 V	70 Cel	130 MBps	0 Cel	NICKEL PALLADIUM GOLD	QUAD	1.6 mm	28 mm		32	33 MHz	30	260	28 mm	CMOS		3.3 V	Bus Controllers	PCI	.5 mm	S-PQFP-G208	1	Not Qualified	IEEE 1394	e4
PCI2050BPDVG4	Texas Instruments	BUS CONTROLLER, PCI	COMMERCIAL	GULL WING	208	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		32	3.3,3.3/5	FLATPACK, LOW PROFILE, FINE PITCH	QFP208,1.2SQ,20	3 V	70 Cel		0 Cel	NICKEL PALLADIUM GOLD	QUAD	1.6 mm	28 mm		32	66 MHz	30	260	28 mm	CMOS		3.3 V	Bus Controllers	PCI	.5 mm	S-PQFP-G208	1	Not Qualified		e4
TUSB3210PMG4	Texas Instruments	BUS CONTROLLER, UNIVERSAL SERIAL BUS	COMMERCIAL	GULL WING	64	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		0	3.3	FLATPACK, LOW PROFILE, FINE PITCH	QFP64,.47SQ,20	3 V	70 Cel		0 Cel	NICKEL PALLADIUM GOLD	QUAD	1.6 mm	10 mm		0	12 MHz	30	260	10 mm	CMOS	45 mA	3.3 V	Bus Controllers		.5 mm	S-PQFP-G64	3	Not Qualified		e4
PCI2050PDVG4	Texas Instruments	BUS CONTROLLER, PCI	COMMERCIAL	GULL WING	208	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		32	3.3,3.3/5	FLATPACK, LOW PROFILE, FINE PITCH	QFP208,1.2SQ,20	3 V	70 Cel		0 Cel	NICKEL PALLADIUM GOLD	QUAD	1.45 mm	28 mm		32	33 MHz	30	260	28 mm	CMOS		3.3 V	Bus Controllers	PCI	.5 mm	S-PQFP-G208	1	Not Qualified		e4
PCA9663B,118	NXP Semiconductors	BUS CONTROLLER, I2C	INDUSTRIAL	GULL WING	48	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		8	3.3	FLATPACK, LOW PROFILE, FINE PITCH	QFP48,.35SQ,20	3 V	85 Cel		-40 Cel	TIN	QUAD	1.6 mm	7 mm		8	12 MHz	30	260	7 mm	CMOS	25 mA	3.3 V	Bus Controllers	I2C	.5 mm	S-PQFP-G48	1	Not Qualified	IEEE 1149.1	e3
PCU9661B,118	NXP Semiconductors	BUS CONTROLLER, I2C	INDUSTRIAL	GULL WING	48	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		8	3.3	FLATPACK, LOW PROFILE, FINE PITCH	QFP48,.35SQ,20	3 V	85 Cel		-40 Cel	TIN	QUAD	1.6 mm	7 mm		8	12 MHz	30	260	7 mm	CMOS	25 mA	3.3 V	Bus Controllers		.5 mm	S-PQFP-G48	1	Not Qualified	IEEE 1149.1	e3
PCU9669B,118	NXP Semiconductors	BUS CONTROLLER, I2C	INDUSTRIAL	GULL WING	48	LFQFP	SQUARE	PLASTIC/EPOXY	YES	3.6 V		8	3.3	FLATPACK, LOW PROFILE, FINE PITCH	QFP48,.35SQ,20	3 V	85 Cel	5 MBps	-40 Cel	TIN	QUAD	1.6 mm	7 mm		8	12 MHz	30	260	7 mm	CMOS	25 mA	3.3 V	Bus Controllers	I2C	.5 mm	S-PQFP-G48	1	Not Qualified	IEEE 1149.1	e3
SAF1760BE/V1,518	NXP Semiconductors	BUS CONTROLLER, UNIVERSAL SERIAL BUS	INDUSTRIAL	GULL WING	128	LFQFP	RECTANGULAR	PLASTIC/EPOXY	YES	5.5 V	AEC-Q100	17	1.8/3.3	FLATPACK, LOW PROFILE, FINE PITCH	QFP128,.63X.87,20	3 V	85 Cel	240 MBps	-40 Cel		QUAD	1.6 mm	14 mm		32	12 MHz	30	260	20 mm	CMOS		5 V	Bus Controllers	PCI	.5 mm	R-PQFP-G128	3	Not Qualified
SAF1760BE/V1,557	NXP Semiconductors	BUS CONTROLLER, UNIVERSAL SERIAL BUS	INDUSTRIAL	GULL WING	128	LFQFP	RECTANGULAR	PLASTIC/EPOXY	YES	5.5 V	AEC-Q100	17	1.8/3.3	FLATPACK, LOW PROFILE, FINE PITCH	QFP128,.63X.87,20	3 V	85 Cel	240 MBps	-40 Cel		QUAD	1.6 mm	14 mm		32	12 MHz		260	20 mm	CMOS		5 V	Bus Controllers	PCI	.5 mm	R-PQFP-G128	3	Not Qualified
SAF1761BE/V1,518	NXP Semiconductors	BUS CONTROLLER, UNIVERSAL SERIAL BUS	INDUSTRIAL	GULL WING	128	LFQFP	RECTANGULAR	PLASTIC/EPOXY	YES	5.5 V	AEC-Q100	17		FLATPACK, LOW PROFILE, FINE PITCH		3 V	85 Cel	240 MBps	-40 Cel		QUAD	1.6 mm	14 mm		32	12 MHz		260	20 mm	CMOS		5 V		PCI	.5 mm	R-PQFP-G128	3
SAF1761BE/V1,557	NXP Semiconductors	BUS CONTROLLER, UNIVERSAL SERIAL BUS	INDUSTRIAL	GULL WING	128	LFQFP	RECTANGULAR	PLASTIC/EPOXY	YES	5.5 V	AEC-Q100	17		FLATPACK, LOW PROFILE, FINE PITCH		3 V	85 Cel	240 MBps	-40 Cel		QUAD	1.6 mm	14 mm		32	12 MHz		260	20 mm	CMOS		5 V		PCI	.5 mm	R-PQFP-G128	3
FT2232D-REEL	FTDI	BUS CONTROLLER, UNIVERSAL SERIAL BUS	INDUSTRIAL	GULL WING	48	LFQFP	SQUARE	PLASTIC/EPOXY	YES	5.25 V		0		FLATPACK, LOW PROFILE, FINE PITCH		4.35 V	85 Cel	1 MBps	-40 Cel	MATTE TIN	QUAD	1.6 mm	7 mm		0	6 MHz	30	260	7 mm	CMOS		5 V		I2C	.5 mm	S-PQFP-G48	3			e3
PI7C9X7954AFDE	Diodes Incorporated	BUS CONTROLLER, PCI	INDUSTRIAL	GULL WING	128	LFQFP	SQUARE	PLASTIC/EPOXY	YES	2 V				FLATPACK, LOW PROFILE, FINE PITCH		1.6 V	85 Cel	2500 MBps	-40 Cel		QUAD	1.6 mm	14 mm			60 MHz			14 mm	CMOS		1.8 V		UART	.4 mm	S-PQFP-G128			RS232; RS422; RS485

Bus Controllers

Bus controllers are integrated circuits that are used to manage and control the flow of data and control signals between different devices in a computer system. They are commonly used in systems that have multiple buses, such as a memory bus and an I/O bus. Bus controllers ensure that data is transferred efficiently and correctly between different devices in the system.

One of the primary functions of a bus controller is to manage bus arbitration. Bus arbitration is the process of resolving conflicts that occur when two or more devices on the bus attempt to access the bus at the same time. Bus controllers use various algorithms to determine which device has priority access to the bus and when other devices can access it.

Another important function of bus controllers is to manage the transfer of data and control signals between devices on the bus. This involves controlling the timing and synchronization of signals, as well as error detection and correction. Bus controllers also manage other aspects of the bus, such as interrupt handling and power management.