Maxlinear encoder interface - Allicdata Electronics

Related Categories

< 63 64 65 66 67 >

Allicdata Part#	Mft.Part#	Company	Spec.	QTY.	Pricing(USD)
SP6644EU-L/TR-N D	SP6644EU-L/TR	MaxLinear, Inc.	View more Packaging: Tape & Reel (TR) Part Status: Obsolete Function: Step-Up Output Configuration: Positive Topology: Boost Output Type: Adjustable (Fixed) Number of Outputs: 1 Voltage - Input (Min): 0.9V Voltage - Input (Max): 3.3V Voltage - Output (Min/Fixed): 2V (3.3V) Voltage - Output (Max): 5.5V Current - Output: 1A (Switch) Synchronous Rectifier: Yes Operating Temperature: -40C ~ 85C (TA) Mounting Type: Surface Mount Package / Case: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Supplier Device Package: 8-MSOP	1000 Order	1+: $0
1016-2095-ND	XR32431EHCR-F	MaxLinear, Inc.	View more Packaging: Tray Part Status: Obsolete Type: Transceiver Protocol: RS232 Number of Drivers/Receivers: 3/5 Duplex: Full Receiver Hysteresis: 300mV Data Rate: 460Kbps Voltage - Supply: 3 V ~ 5.5 V Operating Temperature: 0C ~ 70C Mounting Type: Surface Mount Package / Case: 32-VFQFN Exposed Pad Supplier Device Package: 32-QFN (5x5)	90 Order	1+: $1.26 10+: $1.1372 25+: $1.0156
XR33052IDTR-F-N D	XR33052IDTR-F	MaxLinear, Inc.	View more Packaging: Tape & Reel (TR) Part Status: Active Type: Transceiver Protocol: RS422, RS485 Number of Drivers/Receivers: 1/1 Duplex: Half Receiver Hysteresis: 170mV Data Rate: 250kbps Voltage - Supply: 3 V ~ 5.5 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 8-SOIC (0.154", 3.90mm Width) Supplier Device Package: 8-SOIC	1000 Order	2500+: $0.8452
CAB-00001-001-N D	CAB-00001-001	MaxLinear, Inc.	View more Series: * Part Status: Obsolete	1000 Order	1+: $0
1016-1159-5-ND	SP481EEN-L	MaxLinear, Inc.	View more Packaging: Tube Part Status: Obsolete Type: Transceiver Protocol: RS422, RS485 Number of Drivers/Receivers: 1/1 Duplex: Half Receiver Hysteresis: 20mV Data Rate: 10Mbps Voltage - Supply: 4.75 V ~ 5.25 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 8-SOIC (0.154", 3.90mm Width) Supplier Device Package: 8-SOIC	1000 Order	--
SP3222EBEA-L-ND	SP3222EBEA-L	MaxLinear, Inc.	View more Packaging: Tube Part Status: Discontinued at Digi-Key Type: Transceiver Protocol: RS232 Number of Drivers/Receivers: 2/2 Duplex: Full Receiver Hysteresis: 300mV Data Rate: 250kbps Voltage - Supply: 3 V ~ 5.5 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 20-SSOP (0.209", 5.30mm Width) Supplier Device Package: 20-SSOP	1000 Order	--
1016-1756-ND	XRP2527EVB	MaxLinear, Inc.	View more Part Status: Active Type: Power Management Function: Power Distribution Switch (Load Switch) Utilized IC / Part: XRP2527 Supplied Contents: Board(s)	3 Order	1+: $20.475
1016-1527-5-ND	SP6685ER-L	MaxLinear, Inc.	View more Packaging: Bulk Part Status: Discontinued at Digi-Key Type: DC DC Regulator Topology: Switched Capacitor (Charge Pump) Internal Switch(s): Yes Number of Outputs: 1 Voltage - Supply (Min): 2.7V Voltage - Supply (Max): 5.5V Current - Output / Channel: 700mA (Flash) Frequency: 2.4MHz Applications: Backlight, Camera Flash Operating Temperature: -40C ~ 85C (TA) Mounting Type: Surface Mount Package / Case: 10-VFDFN Exposed Pad Supplier Device Package: 10-DFN (3x3)	1000 Order	1+: $0
1016-1600-2-ND	SP809EK-L-3-1/T R	MaxLinear, Inc.	View more Packaging: Tape & Reel (TR) Part Status: Obsolete Type: Simple Reset/Power-On Reset Number of Voltages Monitored: 1 Output: Push-Pull, Totem Pole Reset: Active Low Reset Timeout: 140 ms Minimum Voltage - Threshold: 3.1V Operating Temperature: -40C ~ 85C (TA) Mounting Type: Surface Mount Package / Case: TO-236-3, SC-59, SOT-23-3 Supplier Device Package: SOT-23-3	1000 Order	--
SP6265JEK1-L/TR -ND	SP6265JEK1-L/TR	MaxLinear, Inc.	View more Packaging: Tape & Reel (TR) Part Status: Obsolete Output Configuration: Positive Output Type: Fixed Number of Regulators: 2 Voltage - Input (Max): 5.5V Voltage - Output (Min/Fixed): 2.85V, 2.85V Voltage Dropout (Max): 0.3V @ 150mA, 0.3V @ 150mA Current - Output: 150mA, 150mA Current - Quiescent (Iq): 160A PSRR: 55dB ~ 48dB (100Hz ~ 10kHz) Control Features: Enable Protection Features: Over Current, Over Temperature Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: SOT-23-6 Thin, TSOT-23-6 Supplier Device Package: TSOT-23-6	1000 Order	1+: $0
SPX1587T-L/TR-N D	SPX1587T-L/TR	MaxLinear, Inc.	View more Packaging: Tape & Reel (TR) Part Status: Obsolete Output Configuration: Positive Output Type: Adjustable Number of Regulators: 1 Voltage - Input (Max): 10V Voltage - Output (Min/Fixed): 1.25V Voltage - Output (Max): 15V Voltage Dropout (Max): 1.2V @ 3A Current - Output: 3A PSRR: 75dB (120Hz) Protection Features: Over Current, Over Temperature Operating Temperature: -40C ~ 125C Mounting Type: Surface Mount Package / Case: TO-263-4, DPak (3 Leads + Tab), TO-263AA Supplier Device Package: TO-263-3	1000 Order	1+: $0
1016-1894-5-ND	SP706CN-L	MaxLinear, Inc.	View more Packaging: Tube Part Status: Discontinued at Digi-Key Type: Simple Reset/Power-On Reset Number of Voltages Monitored: 1 Reset: Active Low Reset Timeout: 140 ms Minimum Voltage - Threshold: 4.4V Operating Temperature: 0C ~ 70C (TA) Mounting Type: Surface Mount Package / Case: 8-SOIC (0.154", 3.90mm Width) Supplier Device Package: 8-SOIC	1000 Order	1+: $0
SP791CN-L-ND	SP791CN-L	MaxLinear, Inc.	View more Packaging: Tube Part Status: Discontinued at Digi-Key Type: Simple Reset/Power-On Reset Number of Voltages Monitored: 1 Reset: Active Low Reset Timeout: 140 ms Minimum Voltage - Threshold: 4.65V Operating Temperature: 0C ~ 70C (TA) Mounting Type: Surface Mount Package / Case: 16-SOIC (0.154", 3.90mm Width) Supplier Device Package: 16-SOIC	1000 Order	--
1016-1358-5-ND	XRT8001ID-F	MaxLinear, Inc.	View more Packaging: Tube Part Status: Active PLL: Yes Main Purpose: Ethernet (WAN), T1/E1 Input: Clock Output: Clock Number of Circuits: 1 Ratio - Input:Output: 1:2 Differential - Input:Output: No/No Frequency - Max: 16.384kHz Voltage - Supply: 3.3 V ~ 5 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 18-SOIC (0.295", 7.50mm Width) Supplier Device Package: 18-SOIC	1000 Order	--
SPX3819R2-L-1-2 /TR-ND	SPX3819R2-L-1-2 /TR	MaxLinear, Inc.	View more Packaging: Tape & Reel (TR) Part Status: Active Output Configuration: Positive Output Type: Fixed Number of Regulators: 1 Voltage - Input (Max): 16V Voltage - Output (Min/Fixed): 1.2V Current - Output: 500mA Current - Quiescent (Iq): 8A Current - Supply (Max): 30mA Control Features: Enable Protection Features: Over Current, Over Temperature, Reverse Polarity Operating Temperature: -40C ~ 125C Mounting Type: Surface Mount Package / Case: 8-VFDFN Exposed Pad Supplier Device Package: 8-DFN (2x3)	1000 Order	--
XRP7724ILBTR-CX 01-F-ND	XRP7724ILBTR-CX 01-F	MaxLinear, Inc.	View more Packaging: Tape & Reel (TR) Part Status: Obsolete Topology: Step-Down (Buck) (4), Linear (LDO) (2) Function: Any Function Number of Outputs: 6 Frequency - Switching: 105kHz ~ 1.23MHz Voltage/Current - Output 1: Controller Voltage/Current - Output 2: Controller Voltage/Current - Output 3: Controller w/LED Driver: No w/Supervisor: No w/Sequencer: Yes Voltage - Supply: 4.75 V ~ 25 V Operating Temperature: -40C ~ 125C Mounting Type: Surface Mount Package / Case: 44-WFQFN Exposed Pad Supplier Device Package: 44-TQFN-EP (7x7)	1000 Order	1+: $0
1016-1921-ND	XRP6670EVB	MaxLinear, Inc.	View more Part Status: Active Main Purpose: DC/DC, Step Down Outputs and Type: 1, Non-Isolated Voltage - Output: 3.3V Current - Output: 3A Voltage - Input: 2.6 V ~ 5.5 V Regulator Topology: Buck Frequency - Switching: 1MHz Board Type: Fully Populated Supplied Contents: Board(s) Utilized IC / Part: XRP6670	2 Order	1+: $16.3548
1016-1378-ND	XRP7657EVB	MaxLinear, Inc.	View more Part Status: Obsolete Main Purpose: DC/DC, Step Down Outputs and Type: 1, Non-Isolated Voltage - Output: 0.8 V ~ 21 V Current - Output: 2A Voltage - Input: 4.75 V ~ 25 V Regulator Topology: Buck Frequency - Switching: 420kHz Board Type: Fully Populated Supplied Contents: Board(s) Utilized IC / Part: XRP7657	2 Order	1+: $20.475
1016-1030-5-ND	SP232EEP-L	MaxLinear, Inc.	View more Packaging: Tube Part Status: Obsolete Type: Transceiver Protocol: RS232 Number of Drivers/Receivers: 2/2 Duplex: Full Receiver Hysteresis: 500mV Data Rate: 240kbps Voltage - Supply: 4.5 V ~ 5.5 V Operating Temperature: -40C ~ 85C Mounting Type: Through Hole Package / Case: 16-DIP (0.300", 7.62mm) Supplier Device Package: 16-PDIP	1000 Order	1+: $0
1016-1065-5-ND	SP312EET-L	MaxLinear, Inc.	View more Packaging: Tube Part Status: Discontinued at Digi-Key Type: Transceiver Protocol: RS232 Number of Drivers/Receivers: 2/2 Duplex: Full Receiver Hysteresis: 500mV Data Rate: 240kbps Voltage - Supply: 4.5 V ~ 5.5 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 18-SOIC (0.295", 7.50mm Width) Supplier Device Package: 18-SOIC	1000 Order	1+: $0
1016-1067-5-ND	SP3203EEY-L	MaxLinear, Inc.	View more Packaging: Tube Part Status: Obsolete Type: Transceiver Protocol: RS232 Number of Drivers/Receivers: 3/2 Duplex: Full Receiver Hysteresis: 500mV Data Rate: 250kbps Voltage - Supply: 3 V ~ 5.5 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 20-TSSOP (0.173", 4.40mm Width) Supplier Device Package: 20-TSSOP	1000 Order	1+: $0
1016-1320-5-ND	XR5486EID-F	MaxLinear, Inc.	View more Packaging: Tube Part Status: Obsolete Type: Transceiver Protocol: RS422, RS485 Number of Drivers/Receivers: 1/1 Duplex: Full Receiver Hysteresis: 25mV Data Rate: 52Mbps Voltage - Supply: 4.75 V ~ 5.25 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 14-SOIC (0.154", 3.90mm Width) Supplier Device Package: 14-SOIC	1000 Order	--
SP3224ECA-L/TR- ND	SP3224ECA-L/TR	MaxLinear, Inc.	View more Packaging: Tape & Reel (TR) Part Status: Obsolete Type: Transceiver Protocol: RS232 Number of Drivers/Receivers: 2/2 Duplex: Full Receiver Hysteresis: 500mV Data Rate: 250kbps Voltage - Supply: 3 V ~ 5.5 V Operating Temperature: 0C ~ 70C Mounting Type: Surface Mount Package / Case: 20-SSOP (0.209", 5.30mm Width) Supplier Device Package: 20-SSOP	1000 Order	1+: $0
SP3243EET-L/TR- ND	SP3243EET-L/TR	MaxLinear, Inc.	View more Packaging: Tape & Reel (TR) Part Status: Obsolete Type: Transceiver Protocol: RS232 Number of Drivers/Receivers: 3/5 Duplex: Full Receiver Hysteresis: 300mV Data Rate: 120Kbps Voltage - Supply: 3 V ~ 5.5 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 28-SOIC (0.295", 7.50mm Width) Supplier Device Package: 28-SOIC	1000 Order	--
1016-1777-2-ND	SP232AET-L/TR	MaxLinear, Inc.	View more Packaging: Tape & Reel (TR) Part Status: Obsolete Type: Transceiver Protocol: RS232 Number of Drivers/Receivers: 2/2 Duplex: Full Receiver Hysteresis: 500mV Data Rate: 240kbps Voltage - Supply: 4.5 V ~ 5.5 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 16-SOIC (0.295", 7.50mm Width) Supplier Device Package: 16-SOIC	1000 Order	1+: $0
SP3243EHCY-L-ND	SP3243EHCY-L	MaxLinear, Inc.	View more Packaging: Tube Part Status: Obsolete Type: Transceiver Protocol: RS232 Number of Drivers/Receivers: 3/5 Duplex: Full Receiver Hysteresis: 300mV Data Rate: 460Kbps Voltage - Supply: 3 V ~ 5.5 V Operating Temperature: 0C ~ 70C Mounting Type: Surface Mount Package / Case: 28-TSSOP (0.173", 4.40mm Width) Supplier Device Package: 28-TSSOP	1000 Order	1+: $0
1016-1362-ND	XRT91L33IG-F	MaxLinear, Inc.	View more Packaging: Bulk Part Status: Active PLL: Yes Main Purpose: Ethernet, SONET/SDH Input: LVDS, LVPECL Output: LVDS, LVPECL Number of Circuits: 1 Ratio - Input:Output: 1:2 Differential - Input:Output: Yes/Yes Frequency - Max: 622.08MHz Voltage - Supply: 3.135 V ~ 3.465 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 20-TSSOP (0.173", 4.40mm Width) Supplier Device Package: 20-TSSOP	121 Order	--
SP6214EC5-L-3-3 /TR-ND	SP6214EC5-L-3-3 /TR	MaxLinear, Inc.	View more Packaging: Tape & Reel (TR) Part Status: Obsolete Output Configuration: Positive Output Type: Fixed Number of Regulators: 1 Voltage - Input (Max): 6V Voltage - Output (Min/Fixed): 3.3V Voltage Dropout (Max): 0.5V @ 100mA Current - Output: 100mA Current - Quiescent (Iq): 125A Current - Supply (Max): 250A PSRR: 70dB ~ 40dB (100Hz ~ 400kHz) Control Features: Enable Protection Features: Over Current, Over Temperature Operating Temperature: -40C ~ 125C Mounting Type: Surface Mount Package / Case: 5-TSSOP, SC-70-5, SOT-353 Supplier Device Package: SC-70-5	1000 Order	--
SPX1587AR-L/TR- ND	SPX1587AR-L/TR	MaxLinear, Inc.	View more Packaging: Tape & Reel (TR) Part Status: Obsolete Output Configuration: Positive Output Type: Adjustable Number of Regulators: 1 Voltage - Input (Max): 10V Voltage - Output (Min/Fixed): 1.25V Voltage - Output (Max): 15V Voltage Dropout (Max): 1.2V @ 3A Current - Output: 3A PSRR: 75dB (120Hz) Protection Features: Over Current, Over Temperature Operating Temperature: -40C ~ 125C Mounting Type: Surface Mount Package / Case: TO-252-3, DPak (2 Leads + Tab), SC-63 Supplier Device Package: TO-252-3	1000 Order	1+: $0
SPX2951ACS-L-5- 0-ND	SPX2951ACS-L-5- 0	MaxLinear, Inc.	View more Packaging: Tube Part Status: Obsolete Output Configuration: Positive Output Type: Fixed Number of Regulators: 1 Voltage - Input (Max): 30V Voltage - Output (Min/Fixed): 5V Voltage Dropout (Max): 0.5V @ 150mA Current - Output: 150mA Current - Quiescent (Iq): 170A Current - Supply (Max): 8mA Control Features: Enable, Power On Reset Protection Features: Over Current, Over Temperature Operating Temperature: -40C ~ 125C Mounting Type: Surface Mount Package / Case: 8-SOIC (0.154", 3.90mm Width) Supplier Device Package: 8-SOIC	1000 Order	1+: $0
SPX2954S-L-5-0/ TR-ND	SPX2954S-L-5-0/ TR	MaxLinear, Inc.	View more Packaging: Tape & Reel (TR) Part Status: Obsolete Output Configuration: Positive Output Type: Fixed Number of Regulators: 1 Voltage - Input (Max): 30V Voltage - Output (Min/Fixed): 5V Voltage Dropout (Max): 0.5V @ 250mA Current - Output: 250mA Current - Quiescent (Iq): 170A Current - Supply (Max): 14A Control Features: Enable, Power On Reset Protection Features: Over Current, Over Temperature Operating Temperature: -40C ~ 125C Mounting Type: Surface Mount Package / Case: 8-SOIC (0.154", 3.90mm Width) Supplier Device Package: 8-SOIC	1000 Order	1+: $0
1016-1412-ND	SPX3819M5-L-2-5	MaxLinear, Inc.	View more Packaging: Bulk Part Status: Discontinued at Digi-Key Output Configuration: Positive Output Type: Fixed Number of Regulators: 1 Voltage - Input (Max): 16V Voltage - Output (Min/Fixed): 2.5V Voltage Dropout (Max): 0.7V @ 500mA Current - Output: 500mA Current - Quiescent (Iq): 8A Current - Supply (Max): 30mA Control Features: Enable Protection Features: Over Current, Over Temperature, Reverse Polarity Operating Temperature: -40C ~ 125C Mounting Type: Surface Mount Package / Case: SC-74A, SOT-753 Supplier Device Package: SOT-23-5	1000 Order	1+: $0
SP706SCN/TR-ND	SP706SCN/TR	MaxLinear, Inc.	View more Packaging: Tape & Reel (TR) Part Status: Preliminary Type: Simple Reset/Power-On Reset Number of Voltages Monitored: 1 Reset: Active Low Reset Timeout: 140 ms Minimum Voltage - Threshold: 2.93V Operating Temperature: 0C ~ 70C (TA) Mounting Type: Surface Mount Package / Case: 8-SOIC (0.154", 3.90mm Width) Supplier Device Package: 8-SOIC	1000 Order	1+: $0
XRT5675DTR-F-ND	XRT5675DTR-F	MaxLinear, Inc.	View more Series: * Part Status: Obsolete	1000 Order	1+: $0
1016-1827-2-ND	SP485EEN-L/TR	MaxLinear, Inc.	View more Packaging: Tape & Reel (TR) Part Status: Active Type: Transceiver Protocol: RS422, RS485 Number of Drivers/Receivers: 1/1 Duplex: Half Receiver Hysteresis: 20mV Data Rate: 10Mbps Voltage - Supply: 4.75 V ~ 5.25 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 8-SOIC (0.154", 3.90mm Width) Supplier Device Package: 8-SOIC	45000 Order	--
1016-1049-5-ND	SP3076EEN-L	MaxLinear, Inc.	View more Packaging: Tube Part Status: Active Type: Transceiver Protocol: RS422, RS485 Number of Drivers/Receivers: 1/1 Duplex: Full Receiver Hysteresis: 100mV Data Rate: 16Mbps Voltage - Supply: 3.3V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 14-SOIC (0.154", 3.90mm Width) Supplier Device Package: 14-SOIC	1321 Order	1+: $1.4364 10+: $1.2991 25+: $1.1597 100+: $1.0437 250+: $0.9278 500+: $0.8118 1000+: $0.6726 2500+: $0.6262 5000+: $0.603
1016-1117-5-ND	SP3243EBCA-L	MaxLinear, Inc.	View more Packaging: Tube Part Status: Obsolete Type: Transceiver Protocol: RS232 Number of Drivers/Receivers: 3/5 Duplex: Full Receiver Hysteresis: 300mV Data Rate: 250kbps Voltage - Supply: 3 V ~ 5.5 V Operating Temperature: 0C ~ 70C Mounting Type: Surface Mount Package / Case: 28-SSOP (0.209", 5.30mm Width) Supplier Device Package: 28-SSOP	185 Order	--
1016-1832-2-ND	SP490EEN-L/TR	MaxLinear, Inc.	View more Packaging: Tape & Reel (TR) Part Status: Active Type: Transceiver Protocol: RS422, RS485 Number of Drivers/Receivers: 1/1 Duplex: Full Receiver Hysteresis: 70mV Data Rate: 10Mbps Voltage - Supply: 4.75 V ~ 5.25 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 8-SOIC (0.154", 3.90mm Width) Supplier Device Package: 8-SOIC	1000 Order	--
1016-1433-2-ND	XRP6658ISTR-F	MaxLinear, Inc.	View more Packaging: Tape & Reel (TR) Part Status: Active Function: Step-Down Output Configuration: Positive Topology: Buck Output Type: Adjustable Number of Outputs: 1 Voltage - Input (Min): 2.5V Voltage - Input (Max): 5.5V Voltage - Output (Min/Fixed): 0.6V Voltage - Output (Max): 5V Current - Output: 1A Frequency - Switching: 1.5MHz Synchronous Rectifier: Yes Operating Temperature: -40C ~ 85C (TA) Mounting Type: Surface Mount Package / Case: SC-74A, SOT-753 Supplier Device Package: SOT-23-5	1000 Order	--
1016-1842-2-ND	SP7651ER-L/TR	MaxLinear, Inc.	View more Series: Power Blox Packaging: Tape & Reel (TR) Part Status: Active Function: Step-Down Output Configuration: Positive Topology: Buck Output Type: Adjustable Number of Outputs: 1 Voltage - Input (Min): 2.5V Voltage - Input (Max): 20V Voltage - Output (Min/Fixed): 0.8V Voltage - Output (Max): 19V Current - Output: 3A Frequency - Switching: 900kHz Synchronous Rectifier: Yes Operating Temperature: -40C ~ 85C (TA) Mounting Type: Surface Mount Package / Case: 26-PowerVFDFN Supplier Device Package: 26-DFN (7x4)	1000 Order	--

< 63 64 65 66 67 >

Hot Searches: maxlinear encoder interface on encoder interface maxlinear decoder interface maxlinear converter interface adsantec encoder interface analog encoder interface akm encoder interface broadcom encoder interface burr encoder interface cirrus encoder interface conexant encoder interface cypress encoder interface fairchild encoder interface freescale encoder interface kinnum encoder interface harris encoder interface holtek encoder interface infineon encoder interface intersil encoder interface lantic encoder interface

Search Result:maxlinear encoder interface

Related Categories