Fremont led driver - Allicdata Electronics

Related Categories

< 246 247 248 249 250

Allicdata Part#	Mft.Part#	Company	Spec.	QTY.	Pricing(USD)
568-5023-5-ND	PCA82C250T/N4,1 12	NXP USA Inc	View more Packaging: Tube Part Status: Obsolete Type: Transceiver Protocol: CANbus Number of Drivers/Receivers: 1/1 Duplex: Half Receiver Hysteresis: 150mV Voltage - Supply: 4.5 V ~ 5.5 V Operating Temperature: -40C ~ 125C Mounting Type: Surface Mount Package / Case: 8-SOIC (0.154", 3.90mm Width) Supplier Device Package: 8-SO Base Part Number: PCA82C250	1000 Order	1+: $0
LTC2871CFE-ND	LTC2871CFE	Linear Technology/Analog Devices	View more Part Status: Obsolete Type: Transceiver Protocol: Multiprotocol Number of Drivers/Receivers: 3/3 Duplex: Full Receiver Hysteresis: 220mV Data Rate: 20Mbps Voltage - Supply: 3 V ~ 5.5 V Operating Temperature: 0C ~ 70C Mounting Type: Surface Mount Package / Case: 38-TFSOP (0.173", 4.40mm Width) Exposed Pad Supplier Device Package: 38-TSSOP	1000 Order	1+: $0
296-41394-2-ND	SN65LVDM176DGKR	Texas Instruments	View more Packaging: Tape & Reel (TR) Part Status: Active Type: Transceiver Protocol: LVDS Number of Drivers/Receivers: 1/1 Duplex: Half Data Rate: 400Mbps Voltage - Supply: 3 V ~ 3.6 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Supplier Device Package: 8-VSSOP Base Part Number: SN65LVDM176	5000 Order	2500+: $1.5686
MAX13054ESA+-ND	MAX13054ESA+	Maxim Integrated	View more Packaging: Tube Part Status: Active Type: Transceiver Protocol: CANbus Number of Drivers/Receivers: 1/1 Duplex: Full Receiver Hysteresis: 70mV Data Rate: 1Mbps 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 Base Part Number: MAX13054	3512 Order	1+: $1.7199 10+: $1.6336 25+: $1.5246 50+: $1.5017
MAX3094EEUE+TR- ND	MAX3094EEUE+T	Maxim Integrated	View more Packaging: Tape & Reel (TR) Part Status: Active Type: Receiver Protocol: RS422, RS485 Number of Drivers/Receivers: 0/4 Receiver Hysteresis: 45mV Data Rate: 10Mbps Voltage - Supply: 3 V ~ 3.6 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 16-TSSOP (0.173", 4.40mm Width) Supplier Device Package: 16-TSSOP Base Part Number: MAX3094E	1000 Order	2500+: $1.81
MAX202ECSE+-ND	MAX202ECSE+	Maxim Integrated	View more Packaging: Tube Part Status: Active Type: Transceiver Protocol: RS232 Number of Drivers/Receivers: 2/2 Duplex: Full Receiver Hysteresis: 500mV Data Rate: 120Kbps Voltage - Supply: 4.5 V ~ 5.5 V Operating Temperature: 0C ~ 70C Mounting Type: Surface Mount Package / Case: 16-SOIC (0.154", 3.90mm Width) Supplier Device Package: 16-SO Base Part Number: MAX202	461 Order	--
MAX3323EEUE+-ND	MAX3323EEUE+	Maxim Integrated	View more Packaging: Tube Part Status: Active Type: Transceiver Protocol: RS232 Number of Drivers/Receivers: 1/1 Duplex: Full Receiver Hysteresis: 350mV Data Rate: 250kbps Voltage - Supply: 3 V ~ 5.5 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 16-TSSOP (0.173", 4.40mm Width) Supplier Device Package: 16-TSSOP Base Part Number: MAX3323	2304 Order	--
ISL83078EIUZA-N D	ISL83078EIUZA	Intersil	View more Packaging: Tube Part Status: Active Type: Transceiver Protocol: RS422, RS485 Number of Drivers/Receivers: 1/1 Duplex: Half Receiver Hysteresis: 15mV Data Rate: 20Mbps Voltage - Supply: 3 V ~ 3.6 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Supplier Device Package: 8-MSOP Base Part Number: ISL83078E	2333 Order	--
LTC2858IMS-2#PB F-ND	LTC2858IMS-2#PB F	Linear Technology/Analog Devices	View more Packaging: Tube Part Status: Active Type: Transceiver Protocol: RS422, RS485 Number of Drivers/Receivers: 1/1 Duplex: Full Receiver Hysteresis: 25mV Data Rate: 250kbps Voltage - Supply: 4.5 V ~ 5.5 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Supplier Device Package: 10-MSOP Base Part Number: LTC2858	647 Order	1+: $2.3877 25+: $1.6965 100+: $1.4009
MAX3346EEUD+-ND	MAX3346EEUD+	Maxim Integrated	View more Packaging: Tube Part Status: Active Type: Transceiver Protocol: USB 2.0 Number of Drivers/Receivers: 1/1 Duplex: Full Receiver Hysteresis: 200mV Data Rate: 12Mbps Voltage - Supply: 4 V ~ 5.5 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 14-TSSOP (0.173", 4.40mm Width) Supplier Device Package: 14-TSSOP Base Part Number: MAX3346	567 Order	--
ICL3243EIAZ-ND	ICL3243EIAZ	Intersil	View more Packaging: Tube Part Status: Active Type: Transceiver Protocol: RS232 Number of Drivers/Receivers: 3/5 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: 28-SSOP (0.209", 5.30mm Width) Supplier Device Package: 28-SSOP Base Part Number: ICL3243E	2708 Order	--
296-9743-5-ND	SN65LVDS33PW	Texas Instruments	View more Series: 65LVDS Packaging: Tube Part Status: Active Type: Receiver Protocol: LVDS Number of Drivers/Receivers: 0/4 Receiver Hysteresis: 50mV Data Rate: 400Mbps Voltage - Supply: 3 V ~ 3.6 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 16-TSSOP (0.173", 4.40mm Width) Supplier Device Package: 16-TSSOP Base Part Number: SN65LVDS33	185 Order	1+: $2.1168 10+: $1.8995 100+: $1.5565 500+: $1.325 1000+: $1.1175
MAX3082EPA+-ND	MAX3082EPA+	Maxim Integrated	View more Packaging: Tube Part Status: Active Type: Transceiver Protocol: RS422, RS485 Number of Drivers/Receivers: 1/1 Duplex: Half Receiver Hysteresis: 100mV Data Rate: 115Kbps Voltage - Supply: 4.75 V ~ 5.25 V Operating Temperature: -40C ~ 85C Mounting Type: Through Hole Package / Case: 8-DIP (0.300", 7.62mm) Supplier Device Package: 8-PDIP Base Part Number: MAX3082	155 Order	--
MAX3442EAPA+-ND	MAX3442EAPA+	Maxim Integrated	View more Packaging: Tube Part Status: Active Type: Transceiver Protocol: RS422, RS485 Number of Drivers/Receivers: 1/1 Duplex: Half Receiver Hysteresis: 25mV Data Rate: 250kbps Voltage - Supply: 4.75 V ~ 5.25 V Operating Temperature: -40C ~ 125C Mounting Type: Through Hole Package / Case: 8-DIP (0.300", 7.62mm) Supplier Device Package: 8-PDIP Base Part Number: MAX3442E	285 Order	1+: $3.6225 10+: $3.4417 25+: $3.2067 50+: $3.1501
MAX240CMH+D-ND	MAX240CMH+D	Maxim Integrated	View more Packaging: Tray Part Status: Active Type: Transceiver Protocol: RS232 Number of Drivers/Receivers: 5/5 Duplex: Full Receiver Hysteresis: 500mV Data Rate: 120Kbps Voltage - Supply: 4.5 V ~ 5.5 V Operating Temperature: 0C ~ 70C Mounting Type: Surface Mount Package / Case: 44-QFP Supplier Device Package: 44-MQFP (10x10) Base Part Number: MAX240	250 Order	1+: $9.1098 10+: $8.6543 25+: $6.0732 50+: $5.7695 100+: $4.3974 250+: $4.1775 500+: $3.9336
TLE7269GXUMA1TR -ND	TLE7269GXUMA1	Infineon Technologies	View more Packaging: Tape & Reel (TR) Part Status: Not For New Designs Type: Transceiver Protocol: LINbus Number of Drivers/Receivers: 2/2 Duplex: Full Receiver Hysteresis: 300mV Data Rate: 20kBd Voltage - Supply: 7 V ~ 27 V Operating Temperature: -40C ~ 150C Mounting Type: Surface Mount Package / Case: 14-SOIC (0.154", 3.90mm Width) Supplier Device Package: PG-DSO-14 Base Part Number: TLE7269	2500 Order	2500+: $0.513 5000+: $0.5066
MAX14781EESA+-N D	MAX14781EESA+	Maxim Integrated	View more Packaging: Tube Part Status: Active Type: Transceiver Protocol: RS422, RS485 Number of Drivers/Receivers: 1/1 Duplex: Half Receiver Hysteresis: 15mV Data Rate: 370Kbps Voltage - Supply: 4.5 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	394 Order	--
ISL3152EIPZ-ND	ISL3152EIPZ	Intersil	View more Packaging: Tube Part Status: Active Type: Transceiver Protocol: RS422, RS485 Number of Drivers/Receivers: 1/1 Duplex: Half Receiver Hysteresis: 20mV Data Rate: 115Kbps Voltage - Supply: 4.5 V ~ 5.5 V Operating Temperature: -40C ~ 85C Mounting Type: Through Hole Package / Case: 8-DIP (0.300", 7.62mm) Supplier Device Package: 8-PDIP Base Part Number: ISL3152E	3427 Order	1+: $1.0395 10+: $0.9349 100+: $0.7515 500+: $0.6174 1000+: $0.5116
ISL32173EFBZ-ND	ISL32173EFBZ	Intersil	View more Packaging: Tube Part Status: Active Type: Receiver Protocol: RS422, RS485 Number of Drivers/Receivers: 0/4 Receiver Hysteresis: 30mV Data Rate: 80Mbps Voltage - Supply: 3 V ~ 5.5 V Operating Temperature: -40C ~ 125C Mounting Type: Surface Mount Package / Case: 16-SOIC (0.154", 3.90mm Width) Supplier Device Package: 16-SOIC Base Part Number: ISL32173E	1486 Order	1+: $1.5813 10+: $1.4194 100+: $1.1406 500+: $0.9371 1000+: $0.7765
296-23894-2-ND	SN65LBC176QDRG4 Q1	Texas Instruments	View more Series: Automotive, AEC-Q100 Packaging: Tape & Reel (TR) Part Status: Active Type: Transceiver Protocol: RS422, RS485 Number of Drivers/Receivers: 1/1 Duplex: Half Receiver Hysteresis: 50mV Voltage - Supply: 4.75 V ~ 5.25 V Operating Temperature: -40C ~ 125C Mounting Type: Surface Mount Package / Case: 8-SOIC (0.154", 3.90mm Width) Supplier Device Package: 8-SOIC Base Part Number: SN65LBC176	1000 Order	2500+: $0.8275 5000+: $0.7969
296-40500-2-ND	SN65HVD1470DGSR	Texas Instruments	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: 400kbps Voltage - Supply: 3 V ~ 3.6 V Operating Temperature: -40C ~ 125C Mounting Type: Surface Mount Package / Case: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Supplier Device Package: 10-VSSOP	1000 Order	--
296-40510-2-ND	SN65HVD1477DGKR	Texas Instruments	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: 50Mbps Voltage - Supply: 3 V ~ 3.6 V Operating Temperature: -40C ~ 125C Mounting Type: Surface Mount Package / Case: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Supplier Device Package: 8-VSSOP	1000 Order	2500+: $1.4471
MAX3232EUE+TTR- ND	MAX3232EUE+T	Maxim Integrated	View more Packaging: Tape & Reel (TR) Part Status: Active Type: Transceiver Protocol: RS232 Number of Drivers/Receivers: 2/2 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: 16-TSSOP (0.173", 4.40mm Width) Supplier Device Package: 16-TSSOP Base Part Number: MAX3232	7500 Order	--
296-2353-2-ND	SN65LVDS386DGGR	Texas Instruments	View more Series: 65LVDS Packaging: Tape & Reel (TR) Part Status: Active Type: Receiver Protocol: LVDS Number of Drivers/Receivers: 0/4 Data Rate: 250Mbps Voltage - Supply: 3 V ~ 3.6 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 64-TFSOP (0.240", 6.10mm Width) Supplier Device Package: 64-TSSOP Base Part Number: SN65LVDS386	1000 Order	--
296-45390-2-ND	SN65LBC175AMDRE P	Texas Instruments	View more Packaging: Tape & Reel (TR) Part Status: Active Type: Receiver Protocol: RS422, RS423, RS485 Number of Drivers/Receivers: 0/4 Receiver Hysteresis: 40mV Data Rate: 50Mbps Voltage - Supply: 4.75 V ~ 5.25 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 16-SOIC (0.154", 3.90mm Width) Supplier Device Package: 16-SOIC	1000 Order	2500+: $7.0963
1016-1119-5-ND	SP3243EBEY-L	MaxLinear, Inc.	View more Packaging: Tube Part Status: Active 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: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 28-TSSOP (0.173", 4.40mm Width) Supplier Device Package: 28-TSSOP	651 Order	1+: $1.1277 10+: $1.0219 25+: $0.9107 100+: $0.819 250+: $0.7273 500+: $0.6355 1000+: $0.4717
296-33398-5-ND	MAX3243ECDB	Texas Instruments	View more Packaging: Tube Part Status: Active Type: Transceiver Protocol: RS232 Number of Drivers/Receivers: 3/5 Duplex: Full Receiver Hysteresis: 500mV Data Rate: 500kbps 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 Base Part Number: MAX3243E	617 Order	1+: $1.3734 10+: $1.2354 100+: $0.993 500+: $0.8159 1000+: $0.676
ISL3172EIBZ-T7A TR-ND	ISL3172EIBZ-T7A	Intersil	View more Packaging: Tape & Reel (TR) Part Status: Active Type: Transceiver Protocol: RS422, RS485 Number of Drivers/Receivers: 1/1 Duplex: Half Receiver Hysteresis: 15mV Data Rate: 250kbps Voltage - Supply: 3 V ~ 3.6 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 8-SOIC (0.154", 3.90mm Width) Supplier Device Package: 8-SOIC Base Part Number: ISL3172E	1000 Order	250+: $0.819 500+: $0.7166 1250+: $0.5938 2500+: $0.5528 6250+: $0.5324
296-22599-2-ND	TRS3237EIDBR	Texas Instruments	View more Packaging: Tape & Reel (TR) Part Status: Active Type: Transceiver Protocol: RS232 Number of Drivers/Receivers: 5/3 Duplex: Full Receiver Hysteresis: 500mV Data Rate: 1Mbps Voltage - Supply: 3 V ~ 5.5 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 28-SSOP (0.209", 5.30mm Width) Supplier Device Package: 28-SSOP Base Part Number: TRS3237E	1000 Order	--
1016-1577-5-ND	XRT6164CD-F	MaxLinear, Inc.	View more Packaging: Tube Part Status: Active Type: Transceiver Number of Drivers/Receivers: 1/1 Duplex: Full Voltage - Supply: 4.75 V ~ 5.25 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 16-SOIC (0.295", 7.50mm Width) Supplier Device Package: 16-SOIC	5 Order	--
ISL81487IBZ-T-N D	ISL81487IBZ-T	Intersil	View more Packaging: Tape & Reel (TR) Part Status: Active Type: Transceiver Protocol: RS422, RS485 Number of Drivers/Receivers: 1/1 Duplex: Half Receiver Hysteresis: 70mV Data Rate: 5Mbps Voltage - Supply: 4.5 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 Base Part Number: ISL81487	1000 Order	--
638-1059-2-ND	USB3315-CP-TR	Microchip Technology	View more Series: flexPWR Packaging: Tape & Reel (TR) Part Status: Active Type: Transceiver Protocol: USB 2.0 Voltage - Supply: 1.8 V ~ 3.3 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 24-VFQFN Exposed Pad Supplier Device Package: 24-QFN-EP (4x4) Base Part Number: USB3315	1000 Order	--
SN75154NG4-ND	SN75154NG4	Texas Instruments	View more Packaging: Tube Part Status: Active Type: Receiver Protocol: RS232 Number of Drivers/Receivers: 0/4 Receiver Hysteresis: 3.3V Voltage - Supply: 4.5 V ~ 5.5 V Operating Temperature: 0C ~ 70C Mounting Type: Through Hole Package / Case: 16-DIP (0.300", 7.62mm) Supplier Device Package: 16-PDIP Base Part Number: SN75154	1000 Order	425+: $0.7573
ISL3243EIRZ-T-N D	ISL3243EIRZ-T	Intersil	View more Packaging: Tape & Reel (TR) Part Status: Active Type: Transceiver Protocol: RS232 Number of Drivers/Receivers: 3/5 Duplex: Full Receiver Hysteresis: 500mV Data Rate: 250kbps Voltage - Supply: 2.7 V ~ 3.6 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 32-VFQFN Exposed Pad Supplier Device Package: 32-QFN (5x5) Base Part Number: ISL3243E	1000 Order	6000+: $0.7617
XR3087XIDTR-F-N D	XR3087XIDTR-F	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: 25mV Data Rate: 20Mbps Voltage - Supply: 4.5 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+: $0.7862
HIN208EIAZ-T-ND	HIN208EIAZ-T	Intersil	View more Packaging: Tape & Reel (TR) Part Status: Active Type: Transceiver Protocol: RS232 Number of Drivers/Receivers: 4/4 Duplex: Full Receiver Hysteresis: 500mV Data Rate: 230kbps Voltage - Supply: 4.5 V ~ 5.5 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 24-SSOP (0.209", 5.30mm Width) Supplier Device Package: 24-SSOP Base Part Number: HIN208E	1000 Order	2000+: $0.825
ISL32493EIBZ-T- ND	ISL32493EIBZ-T	Intersil	View more Packaging: Tape & Reel (TR) Part Status: Active Type: Transceiver Protocol: RS422, RS485 Number of Drivers/Receivers: 1/1 Duplex: Full Receiver Hysteresis: 25mV Data Rate: 1Mbps Voltage - Supply: 4.5 V ~ 5.5 V Operating Temperature: -40C ~ 85C Mounting Type: Surface Mount Package / Case: 14-SOIC (0.154", 3.90mm Width) Supplier Device Package: 14-SOIC Base Part Number: ISL32493E	1000 Order	2500+: $1.3574
MAX3080EESD+T-N D	MAX3080EESD+T	Maxim Integrated	View more Packaging: Tape & Reel (TR) Part Status: Active Type: Transceiver Protocol: RS422, RS485 Number of Drivers/Receivers: 1/1 Duplex: Full Receiver Hysteresis: 100mV Data Rate: 115Kbps 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 Base Part Number: MAX3080	1000 Order	--
MAX13088EASA+T- ND	MAX13088EASA+T	Maxim Integrated	View more Packaging: Tape & Reel (TR) Part Status: Active Type: Transceiver Protocol: RS422, RS485 Number of Drivers/Receivers: 1/1 Duplex: Half Receiver Hysteresis: 100mV Data Rate: 16Mbps Voltage - Supply: 4.5 V ~ 5.5 V Operating Temperature: -40C ~ 125C Mounting Type: Surface Mount Package / Case: 8-SOIC (0.154", 3.90mm Width) Supplier Device Package: 8-SOIC Base Part Number: MAX13088E	1000 Order	--
LT1039ACSW16#PB F-ND	LT1039ACSW16#PB F	Linear Technology/Analog Devices	View more Packaging: Tube Part Status: Active Type: Transceiver Protocol: RS232 Number of Drivers/Receivers: 3/3 Duplex: Full Receiver Hysteresis: 400mV Voltage - Supply: 5 V ~ 15 V Operating Temperature: 0C ~ 70C Mounting Type: Surface Mount Package / Case: 16-SOIC (0.295", 7.50mm Width) Supplier Device Package: 16-SOIC Base Part Number: LT1039	1000 Order	235+: $2.1527

< 246 247 248 249 250

Hot Searches: fremont led driver led driver pmic ablic led driver adafruit led driver allegro led driver alpha led driver omega led driver american led driver ams led driver analog led driver akm led driver cel led driver cirrus led driver cypress led driver dialog led driver diodes led driver infineon led driver issi led driver ixys led driver lumissil led driver

Search Result:fremont led driver

Related Categories