Nxp decoder interface - Allicdata Electronics

Related Categories

< 3 4 5 6 7 >

Allicdata Part#	Mft.Part#	Company	Spec.	QTY.	Pricing(USD)
LM3620M5-4TR-ND	LM3620M5-4	Texas Instruments	View more Packaging: Tape & Reel (TR) Part Status: Obsolete Battery Chemistry: Lithium-Ion Number of Cells: 1 Battery Pack Voltage: 4.2V Voltage - Supply (Max): 30V Operating Temperature: 0C ~ 70C (TA) Package / Case: SC-74A, SOT-753 Supplier Device Package: SOT-23-5 Base Part Number: LM3620	1000 Order	1+: $0
ISL6294IBZ-TTR- ND	ISL6294IBZ-T	Intersil	View more Packaging: Tape & Reel (TR) Part Status: Obsolete Battery Chemistry: Lithium-Ion/Polymer Number of Cells: 1 Current - Charging: Constant - Programmable Fault Protection: Over Temperature Charge Current - Max: 600mA Battery Pack Voltage: 4.2V Voltage - Supply (Max): 6.5V Operating Temperature: -40C ~ 85C (TA) Package / Case: 8-SOIC (0.154", 3.90mm Width) Supplier Device Package: 8-SOIC Base Part Number: ISL6294	1000 Order	--
LTC1730ES8-4.2# PBF-ND	LTC1730ES8-4.2# PBF	Linear Technology/Analog Devices	View more Packaging: Tube Part Status: Active Battery Chemistry: Lithium-Ion Number of Cells: 1 Current - Charging: Constant, Pulsed Programmable Features: Timer Fault Protection: Over Current Charge Current - Max: 1A Battery Pack Voltage: 4.2V Voltage - Supply (Max): 12V Operating Temperature: -40C ~ 85C (TJ) Package / Case: 8-SOIC (0.154", 3.90mm Width) Supplier Device Package: 8-SOIC Base Part Number: LTC1730	311 Order	1+: $2.5011 25+: $1.6617 100+: $1.2466
MCP73831T-5ACI/ OTTR-ND	MCP73831T-5ACI/ OT	Microchip Technology	View more Packaging: Tape & Reel (TR) Part Status: Active Battery Chemistry: Lithium-Ion/Polymer Number of Cells: 1 Current - Charging: Constant - Programmable Programmable Features: Current Fault Protection: Over Voltage Charge Current - Max: 500mA Battery Pack Voltage: 4.5V Voltage - Supply (Max): 6V Operating Temperature: -40C ~ 85C (TA) Package / Case: SC-74A, SOT-753 Supplier Device Package: SOT-23-5 Base Part Number: MCP73831	1000 Order	3000+: $0.2725
MAX77818EWZ+TTR -ND	MAX77818EWZ+T	Maxim Integrated	View more Packaging: Tape & Reel (TR) Part Status: Active Battery Chemistry: Lithium-Ion/Polymer Number of Cells: 1 Current - Charging: Constant - Programmable Fault Protection: Over Current, Over Voltage Charge Current - Max: 3A Battery Pack Voltage: 4.2V Voltage - Supply (Max): 5V Interface: IC Operating Temperature: -40C ~ 85C (TA) Package / Case: 72-WFBGA, WLBGA Supplier Device Package: 72-WLP	1000 Order	2000+: $1.3042
ISL88731CHRTZ-T TR-ND	ISL88731CHRTZ-T	Intersil	View more Packaging: Tape & Reel (TR) Part Status: Active Battery Chemistry: Lithium-Ion Number of Cells: 1 ~ 4 Current - Charging: Constant, Pulsed Fault Protection: Short Circuit Charge Current - Max: 8A Battery Pack Voltage: 16.8V Voltage - Supply (Max): 26V Interface: IC Operating Temperature: -10C ~ 100C (TA) Package / Case: 28-WFQFN Exposed Pad Supplier Device Package: 28-TQFN-EP (5x5) Base Part Number: ISL88731	1000 Order	--
MCP73853T-I/MLT R-ND	MCP73853T-I/ML	Microchip Technology	View more Packaging: Tape & Reel (TR) Part Status: Active Battery Chemistry: Lithium-Ion/Polymer Number of Cells: 1 Current - Charging: Constant - Programmable Programmable Features: Timer Charge Current - Max: 475mA Battery Pack Voltage: 4.2V Voltage - Supply (Max): 5.5V Operating Temperature: -40C ~ 85C (TA) Package / Case: 16-VQFN Exposed Pad Supplier Device Package: 16-QFN-EP (4x4) Base Part Number: MCP73853	3300 Order	3300+: $0.876
LTC1730EGN-4#TR PBF-ND	LTC1730EGN-4#TR PBF	Linear Technology/Analog Devices	View more Packaging: Tape & Reel (TR) Part Status: Active Battery Chemistry: Lithium-Ion Number of Cells: 1 Current - Charging: Constant, Pulsed Programmable Features: Timer Fault Protection: Over Current Charge Current - Max: 1A Battery Pack Voltage: 4.2V Voltage - Supply (Max): 12V Operating Temperature: -40C ~ 85C (TJ) Package / Case: 16-SSOP (0.154", 3.90mm Width) Supplier Device Package: 16-SSOP Base Part Number: LTC1730	1000 Order	2500+: $1.4721
ISL88739HRZ-ND	ISL88739HRZ	Intersil	View more Packaging: Tube Part Status: Active Battery Chemistry: Lithium-Ion/Polymer Number of Cells: 2 ~ 4 Fault Protection: Over Current Voltage - Supply (Max): 22V Interface: SMBus Package / Case: 32-VFQFN Exposed Pad Supplier Device Package: 32-QFN (4x4)	1000 Order	--
LT3651EUHE-8.4# TRPBF-ND	LT3651EUHE-8.4# TRPBF	Linear Technology/Analog Devices	View more Packaging: Tape & Reel (TR) Part Status: Active Battery Chemistry: Lithium-Ion/Polymer Number of Cells: 2 Current - Charging: Constant - Programmable Programmable Features: Current, Timer Fault Protection: Over Temperature Charge Current - Max: 4A Battery Pack Voltage: 8.4V Voltage - Supply (Max): 32V Operating Temperature: -40C ~ 125C (TJ) Package / Case: 36-WFQFN Exposed Pad Supplier Device Package: 36-QFN (5x6) Base Part Number: LT3651	1000 Order	--
LT1505CG#TRPBF- ND	LT1505CG#TRPBF	Linear Technology/Analog Devices	View more Packaging: Tape & Reel (TR) Part Status: Active Battery Chemistry: Multi-Chemistry Number of Cells: 3 ~ 4 Current - Charging: Constant - Programmable Fault Protection: Over Voltage Battery Pack Voltage: 20V (Max) Voltage - Supply (Max): 24V Operating Temperature: 0C ~ 70C (TA) Package / Case: 28-SSOP (0.209", 5.30mm Width) Supplier Device Package: 28-SSOP Base Part Number: LT1505	1000 Order	--
BQ24721RHBR-ND	BQ24721RHBR	Texas Instruments	View more Packaging: Tape & Reel (TR) Part Status: Obsolete Battery Chemistry: Multi-Chemistry Number of Cells: 3 ~ 4 Programmable Features: Current Fault Protection: Over Current Battery Pack Voltage: 19.2V (Max) Voltage - Supply (Max): 24V Interface: IC Operating Temperature: -40C ~ 85C (TA) Package / Case: 32-VFQFN Exposed Pad Supplier Device Package: 32-VQFN (5x5) Base Part Number: BQ24721	1000 Order	1+: $0
ISL6252AHRZ-ND	ISL6252AHRZ	Intersil	View more Packaging: Tube Part Status: Obsolete Battery Chemistry: Lithium-Ion/Polymer Number of Cells: 2 ~ 4 Current - Charging: Constant - Programmable Fault Protection: Over Temperature, Over Voltage, Short Circuit Charge Current - Max: 2.6A Battery Pack Voltage: 17.64V (Max) Voltage - Supply (Max): 25V Operating Temperature: -10C ~ 100C (TA) Package / Case: 28-VFQFN Exposed Pad Supplier Device Package: 28-QFN (5x5) Base Part Number: ISL6252	1000 Order	1+: $0
MAX8845WETC+TTR -ND	MAX8845WETC+T	Maxim Integrated	View more Packaging: Tape & Reel (TR) Part Status: Last Time Buy Battery Chemistry: Lithium-Ion Number of Cells: 1 Current - Charging: Constant - Programmable Fault Protection: Over Voltage Charge Current - Max: 575mA Battery Pack Voltage: 4.35V Voltage - Supply (Max): 7V Operating Temperature: -40C ~ 85C (TA) Package / Case: 12-WFQFN Exposed Pad Supplier Device Package: 12-TQFN (3x3) Base Part Number: MAX8845	1000 Order	1+: $0
LT3651IUHE-4.1# PBF-ND	LT3651IUHE-4.1# PBF	Linear Technology/Analog Devices	View more Packaging: Tube Part Status: Active Battery Chemistry: Lithium-Ion/Polymer Number of Cells: 1 Current - Charging: Constant - Programmable Programmable Features: Current, Timer Fault Protection: Over Temperature Charge Current - Max: 4A Battery Pack Voltage: 4.1V Voltage - Supply (Max): 32V Operating Temperature: -40C ~ 125C (TJ) Package / Case: 36-WFQFN Exposed Pad Supplier Device Package: 36-QFN (5x6) Base Part Number: LT3651	158 Order	1+: $6.5205 25+: $4.3634 100+: $3.7078
296-39914-2-ND	BQ24250YFFR	Texas Instruments	View more Packaging: Tape & Reel (TR) Part Status: Active Battery Chemistry: Lithium-Ion Number of Cells: 1 Current - Charging: Constant - Programmable Programmable Features: Current Fault Protection: Over Current, Over Temperature, Over Voltage Charge Current - Max: 2A Battery Pack Voltage: 4.2V Voltage - Supply (Max): 10.5V Interface: IC Operating Temperature: -40C ~ 85C (TA) Package / Case: 30-UFBGA, DSBGA Supplier Device Package: 30-DSBGA Base Part Number: BQ24250	1000 Order	3000+: $1.3641
LT1511CSW#PBF-N D	LT1511CSW#PBF	Linear Technology/Analog Devices	View more Packaging: Tube Part Status: Active Battery Chemistry: Multi-Chemistry Current - Charging: Constant - Programmable Fault Protection: Over Voltage Charge Current - Max: 3A Battery Pack Voltage: 20V (Max) Voltage - Supply (Max): 28V Operating Temperature: 0C ~ 70C (TA) Package / Case: 24-SOIC (0.295", 7.50mm Width) Supplier Device Package: 24-SOIC Base Part Number: LT1511	111 Order	--
LTC4085EDE-4#PB F-ND	LTC4085EDE-4#PB F	Linear Technology/Analog Devices	View more Series: PowerPath Packaging: Tube Part Status: Active Battery Chemistry: Lithium-Ion/Polymer Number of Cells: 1 Current - Charging: Constant - Programmable Charge Current - Max: 1.5A Battery Pack Voltage: 3.95V Voltage - Supply (Max): 5.5V Interface: USB Operating Temperature: -40C ~ 85C (TA) Package / Case: 14-WFDFN Exposed Pad Supplier Device Package: 14-DFN (4x3) Base Part Number: LTC4085	80 Order	1+: $2.1294 25+: $1.5165 100+: $1.2852
XC6801A421PR-G- ND	XC6801A421PR-G	Torex Semiconductor Ltd	View more Packaging: Tape & Reel (TR) Part Status: Active Battery Chemistry: Lithium-Ion/Polymer Number of Cells: 1 Current - Charging: Constant Fault Protection: Over Temperature Charge Current - Max: 500mA Battery Pack Voltage: 4.2V Voltage - Supply (Max): 6V Operating Temperature: -40C ~ 85C (TA) Package / Case: SOT-89-5/6 Supplier Device Package: SOT-89-5 Base Part Number: XC6801	1000 Order	--
BQ24012DRCRG4-N D	BQ24012DRCRG4	Texas Instruments	View more Series: bqTINY Packaging: Tape & Reel (TR) Part Status: Active Battery Chemistry: Lithium-Ion/Polymer Number of Cells: 1 Current - Charging: Constant - Programmable Programmable Features: Current, Timer Fault Protection: Short Circuit Charge Current - Max: 1A Battery Pack Voltage: 4.2V Voltage - Supply (Max): 16.5V Operating Temperature: -40C ~ 125C (TJ) Package / Case: 10-VFDFN Exposed Pad Supplier Device Package: 10-VSON (3x3) Base Part Number: BQ24012	1000 Order	--
MAX1873TEEE+T-N D	MAX1873TEEE+T	Maxim Integrated	View more Packaging: Tape & Reel (TR) Part Status: Active Battery Chemistry: Multi-Chemistry Number of Cells: 4 Current - Charging: Constant - Programmable Charge Current - Max: 4A Battery Pack Voltage: 16.8V Voltage - Supply (Max): 28V Operating Temperature: -40C ~ 85C (TA) Package / Case: 16-SSOP (0.154", 3.90mm Width) Supplier Device Package: 16-QSOP Base Part Number: MAX1873	1000 Order	2500+: $1.4306
LTC1325CN#PBF-N D	LTC1325CN#PBF	Linear Technology/Analog Devices	View more Packaging: Tube Part Status: Active Battery Chemistry: Multi-Chemistry Current - Charging: Constant - Programmable Battery Pack Voltage: 3.072V Voltage - Supply (Max): 16V Interface: Serial Operating Temperature: 0C ~ 70C (TA) Package / Case: 18-DIP (0.300", 7.62mm) Supplier Device Package: 18-DIP Base Part Number: LTC1325	1000 Order	100+: $4.7232
ISL6291-2CR-ND	ISL6291-2CR	Intersil	View more Packaging: Tube Part Status: Obsolete Battery Chemistry: Lithium-Ion/Polymer Number of Cells: 1 Current - Charging: Constant - Programmable Programmable Features: Current, Timer Charge Current - Max: 2A Battery Pack Voltage: 4.2V Voltage - Supply (Max): 10V Operating Temperature: -20C ~ 70C (TA) Package / Case: 16-VQFN Exposed Pad Supplier Device Package: 16-QFN (5x5) Base Part Number: ISL6291	1000 Order	1+: $0
ISL9203CRZR5220 -ND	ISL9203CRZR5220	Intersil	View more Packaging: Tube Part Status: Obsolete Battery Chemistry: Lithium-Ion/Polymer Number of Cells: 1 Current - Charging: Constant - Programmable Charge Current - Max: 1.5A Battery Pack Voltage: 4.2V Voltage - Supply (Max): 6.5V Operating Temperature: -20C ~ 70C (TA) Package / Case: 10-VFDFN Exposed Pad Supplier Device Package: 10-DFN (3x3) Base Part Number: ISL9203	1000 Order	1+: $0
MAX8731ETI+-ND	MAX8731ETI+	Maxim Integrated	View more Packaging: Tube Part Status: Active Battery Chemistry: Multi-Chemistry Number of Cells: 1 ~ 4 Current - Charging: Constant - Programmable Fault Protection: Over Current, Short Circuit Charge Current - Max: 8A Battery Pack Voltage: 16.8V Voltage - Supply (Max): 26V Interface: IC Operating Temperature: -40C ~ 85C (TA) Package / Case: 28-WFQFN Exposed Pad Supplier Device Package: 28-TQFN (4x4) Base Part Number: MAX8731	1000 Order	1+: $0
MAX17005ETP+-ND	MAX17005ETP+	Maxim Integrated	View more Packaging: Tube Part Status: Obsolete Battery Chemistry: Multi-Chemistry Number of Cells: 3 ~ 4 Current - Charging: Constant - Programmable Fault Protection: Over Current, Short Circuit Charge Current - Max: 5A Battery Pack Voltage: 16.8V Voltage - Supply (Max): 26V Operating Temperature: -40C ~ 85C (TA) Package / Case: 20-WFQFN Exposed Pad Supplier Device Package: 20-TQFN (4x4) Base Part Number: MAX17005	1000 Order	1+: $0
ISL9214IRZ-ND	ISL9214IRZ	Intersil	View more Packaging: Tube Part Status: Obsolete Battery Chemistry: Lithium-Ion/Polymer Number of Cells: 1 Current - Charging: Constant - Programmable Fault Protection: Over Temperature Charge Current - Max: 1A Battery Pack Voltage: 4.2V Voltage - Supply (Max): 24V Interface: USB Operating Temperature: -40C ~ 85C (TA) Package / Case: 10-VFDFN Exposed Pad Supplier Device Package: 10-DFN (3x3) Base Part Number: ISL9214	1000 Order	--
MAX14659ETE+T-N D	MAX14659ETE+T	Maxim Integrated	View more Packaging: Tape & Reel (TR) Part Status: Obsolete Voltage - Supply (Max): 5.5V Interface: USB Operating Temperature: -40C ~ 85C (TA) Package / Case: 16-WFQFN Exposed Pad Supplier Device Package: 16-TQFN (3x3) Base Part Number: MAX14659	1000 Order	1+: $0
AAT4681IDE-T1-N D	AAT4681IDE-T1	Skyworks Solutions Inc.	View more Packaging: Tape & Reel (TR) Part Status: Obsolete Battery Chemistry: Lithium-Ion Number of Cells: 1 Voltage - Supply (Max): 5.5V Interface: USB Operating Temperature: -40C ~ 85C (TA) Package / Case: 10-WFDFN Exposed Pad Supplier Device Package: 10-TDFN (3x3)	1000 Order	1+: $0
LTC1760CFW#PBF- ND	LTC1760CFW#PBF	Linear Technology/Analog Devices	View more Packaging: Tube Part Status: Active Battery Chemistry: Smart Batteries Number of Cells: 2 Current - Charging: Constant - Programmable Charge Current - Max: 4.28A Voltage - Supply (Max): 28V Interface: IC Operating Temperature: 0C ~ 85C (TA) Package / Case: 48-TFSOP (0.240", 6.10mm Width) Supplier Device Package: 48-TSSOP Base Part Number: LTC1760	970 Order	1+: $10.269 25+: $7.3 100+: $6.0083
LT1571EGN-5#PBF -ND	LT1571EGN-5#PBF	Linear Technology/Analog Devices	View more Packaging: Tube Part Status: Active Battery Chemistry: Multi-Chemistry Current - Charging: Constant - Programmable Charge Current - Max: 1.5A Battery Pack Voltage: 4.2V Voltage - Supply (Max): 26V Operating Temperature: -40C ~ 85C (TA) Package / Case: 16-SSOP (0.154", 3.90mm Width) Supplier Device Package: 16-SSOP Base Part Number: LT1571	784 Order	1+: $5.166 25+: $3.4305 100+: $2.6989
MAX1501ETE+-ND	MAX1501ETE+	Maxim Integrated	View more Packaging: Tube Part Status: Active Battery Chemistry: Multi-Chemistry Number of Cells: 1 ~ 3 Current - Charging: Constant - Programmable Fault Protection: Over Voltage Charge Current - Max: 1.4A Voltage - Supply (Max): 6.25V Operating Temperature: -40C ~ 85C (TA) Package / Case: 16-WQFN Exposed Pad Supplier Device Package: 16-TQFN (5x5) Base Part Number: MAX1501	1167 Order	1+: $4.0131 10+: $3.8128 25+: $2.6775 50+: $2.5437 100+: $1.9341 250+: $1.8374 500+: $1.7301
MCP73842-840I/U N-ND	MCP73842-840I/U N	Microchip Technology	View more Packaging: Tube Part Status: Active Battery Chemistry: Lithium-Ion/Polymer Number of Cells: 1 ~ 2 Programmable Features: Timer Fault Protection: Over Temperature Battery Pack Voltage: 8.4V Voltage - Supply (Max): 12V Operating Temperature: -40C ~ 85C (TA) Package / Case: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Supplier Device Package: 10-MSOP Base Part Number: MCP73842	2160 Order	--
1488-1118-2-ND	ACT3780QY-T	Active-Semi International Inc.	View more Series: ActivePath Packaging: Tape & Reel (TR) Part Status: Active Battery Chemistry: Lithium-Ion Number of Cells: 1 Current - Charging: Constant - Programmable Programmable Features: Current, Timer Fault Protection: Over Temperature, Over Voltage, Short Circuit Charge Current - Max: 500mA Battery Pack Voltage: 4.2V Voltage - Supply (Max): 12V Interface: USB Operating Temperature: -40C ~ 85C (TA) Package / Case: 20-WFQFN Exposed Pad Supplier Device Package: 20-TQFN (4x4)	3000 Order	--
LX2201CLQ-ND	LX2201CLQ	Microsemi Corporation	View more Packaging: Tube Part Status: Obsolete Battery Chemistry: Lithium-Ion Number of Cells: 1 Current - Charging: Constant - Programmable Programmable Features: Current Charge Current - Max: 2A Battery Pack Voltage: 4.2V Voltage - Supply (Max): 6V Interface: USB Operating Temperature: 0C ~ 70C (TA) Package / Case: 20-VFQFN Exposed Pad Supplier Device Package: 20-MLPQ (4x4) Base Part Number: LX2201	2951 Order	1+: $3.4587 10+: $3.0889 25+: $2.7798 100+: $2.5327 250+: $2.2855 500+: $2.0508 1000+: $1.7296 2500+: $1.6431
296-39933-2-ND	BQ25101YFPR	Texas Instruments	View more Packaging: Tape & Reel (TR) Part Status: Active Battery Chemistry: Lithium-Ion/Polymer Number of Cells: 1 Current - Charging: Constant - Programmable Programmable Features: Current Fault Protection: Over Temperature, Over Voltage, Short Circuit Charge Current - Max: 250mA Battery Pack Voltage: 4.2V Voltage - Supply (Max): 6.45V Operating Temperature: 0C ~ 125C (TJ) Package / Case: 6-XFBGA, DSBGA Supplier Device Package: 6-DSBGA	1000 Order	--
MCP73831T-4ADI/ OT-ND	MCP73831T-4ADI/ OT	Microchip Technology	View more Packaging: Tape & Reel (TR) Part Status: Active Battery Chemistry: Lithium-Ion/Polymer Number of Cells: 1 Current - Charging: Constant - Programmable Programmable Features: Current Fault Protection: Over Voltage Charge Current - Max: 500mA Battery Pack Voltage: 4.4V Voltage - Supply (Max): 6V Operating Temperature: -40C ~ 85C (TA) Package / Case: SC-74A, SOT-753 Supplier Device Package: SOT-23-5 Base Part Number: MCP73831	1000 Order	3000+: $0.2725
MCP73831-3ACI/M C-ND	MCP73831-3ACI/M C	Microchip Technology	View more Packaging: Tube Part Status: Active Battery Chemistry: Lithium-Ion/Polymer Number of Cells: 1 Current - Charging: Constant - Programmable Programmable Features: Current Fault Protection: Over Voltage Charge Current - Max: 500mA Battery Pack Voltage: 4.35V Voltage - Supply (Max): 6V Operating Temperature: -40C ~ 85C (TA) Package / Case: 8-VFDFN Exposed Pad Supplier Device Package: 8-DFN (2x3) Base Part Number: MCP73831	1000 Order	900+: $0.292
BQ2002ESNTR-ND	BQ2002ESNTR	Texas Instruments	View more Packaging: Tape & Reel (TR) Part Status: Active Battery Chemistry: Multi-Chemistry Current - Charging: Constant, Pulsed Programmable Features: Voltage Battery Pack Voltage: 2V Voltage - Supply (Max): 6V Operating Temperature: 0C ~ 70C (TA) Package / Case: 8-SOIC (0.154", 3.90mm Width) Supplier Device Package: 8-SOIC Base Part Number: BQ2002	1000 Order	--
BQ24003PWPR-ND	BQ24003PWPR	Texas Instruments	View more Packaging: Tape & Reel (TR) Part Status: Active Battery Chemistry: Lithium-Ion Number of Cells: 1 Current - Charging: Constant Programmable Features: Current, Timer Fault Protection: Over Temperature Charge Current - Max: 1.2A Battery Pack Voltage: 4.2V Voltage - Supply (Max): 10V Operating Temperature: -40C ~ 70C (TA) Package / Case: 20-PowerTSSOP (0.173", 4.40mm Width) Supplier Device Package: 20-HTSSOP Base Part Number: BQ24003	1000 Order	2000+: $1.2384

< 3 4 5 6 7 >

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

Search Result:nxp decoder interface

Related Categories