Page 107 - Clock/Timing - Application Specific | Integrated Circuits (ICs)

ZL30164GDG2003T
Microsemi Corporation

IC CLK TRANSLATOR 2CH 144LBGA

Package: -

Stock6,896
CY284108ZXCT
Silicon Labs

IC CLOCK SERV CK410B 56TSSOP

Package: 56-TFSOP (0.240", 6.10mm Width)

Stock9,408
MPC9819ENR2
IDT, Integrated Device Technology Inc

IC PLL CLOCK GENERATOR 20-SSOP

Package: 20-SSOP (0.154", 3.90mm Width)

Stock4,896
MPC942PACR2
IDT, Integrated Device Technology Inc

IC CLK DISTR CHIP LV 1:18 32LQFP

Package: 32-LQFP

Stock7,088
ICS953201BFLFT
IDT, Integrated Device Technology Inc

IC SYSTEM CLK CHIP AMD-K8 56SSOP

Package: 56-BSSOP (0.295", 7.50mm Width)

Stock15,936
ICS952101CF
IDT, Integrated Device Technology Inc

IC FREQ GENERATOR 56-SSOP

Package: 56-BSSOP (0.295", 7.50mm Width)

Stock5,152
9107C-05CS08LFT
IDT, Integrated Device Technology Inc

IC CPU FREQ GENERATOR 8-SOIC

Package: 8-SOIC (0.154", 3.90mm Width)

Stock2,368
CDC960DL
Texas Instruments

IC CLOCK DRVR 200 MHZ 48-SSOP

Package: 48-BSSOP (0.295", 7.50mm Width)

Stock4,240
SI5338M-B-GMR
Silicon Labs

IC CLK GENERATOR I2C PROGR 24QFN

Package: 24-VFQFN Exposed Pad

Stock6,864
TFF11139HN/N1,118
NXP

IC FREQUENCY GENERATOR 24HVQFN

Package: 24-VFQFN Exposed Pad

Stock7,408
9LP525BG-2LF
IDT, Integrated Device Technology Inc

IC PC MAIN CLOCK CK505 56-TSSOP

Package: 56-BSSOP (0.295", 7.50mm Width)

Stock6,240
932SL901AKLFT
IDT, Integrated Device Technology Inc

IC ARM SERVER CLOCK 48MLF

Package: -

Stock5,936
MAX3873AETP+
Maxim Integrated

IC RECOV/RETIME 2.5GBPS 20TQFN

Package: 20-WFQFN Exposed Pad

Stock6,512
82V3399BNLG
IDT, Integrated Device Technology Inc

IC PLL WAN SYNC ETH 72-VFQFP

Package: 72-VFQFN Exposed Pad

Stock7,044
PI6C557-06LE
Diodes Incorporated

IC CLOCK GENERATOR 20-TSSOP

Package: 20-TSSOP (0.173", 4.40mm Width)

Stock7,164
SI5338A-B02935-GMR
Silicon Labs

I2C CONTROL, 4-OUTPUT, ANY FREQU

Package: 24-VFQFN Exposed Pad

Stock4,112
SI5338P-B05175-GM
Silicon Labs

I2C CONTROL, 4-OUTPUT, ANY FREQU

Package: 24-VFQFN Exposed Pad

Stock3,472
SI5338B-B08518-GM
Silicon Labs

I2C CONTROL, 4-OUTPUT, ANY FREQU

Package: 24-VFQFN Exposed Pad

Stock6,656
SI5338B-B08414-GM
Silicon Labs

I2C CONTROL, 4-OUTPUT, ANY FREQU

Package: 24-VFQFN Exposed Pad

Stock4,288
SI5338C-B08184-GM
Silicon Labs

I2C CONTROL, 4-OUTPUT, ANY FREQU

Package: 24-VFQFN Exposed Pad

Stock2,320

Part Number	Manufacturer	Description	Package	Stock	Main Purpose	Input	Output	Number of Circuits	Ratio - Input:Output	Differential - Input:Output	Frequency - Max	Voltage - Supply	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package
ZL30164GDG2003T	Microsemi Corporation	IC CLK TRANSLATOR 2CH 144LBGA PLL: - Main Purpose: - Input: - Output: - Number of Circuits: - Ratio - Input:Output: - Differential - Input:Output: - Frequency - Max: - Voltage - Supply: - Operating Temperature: - Mounting Type: - Package / Case: - Supplier Device Package: -	Package: -	Stock6,896	-	-	-	-	-	-	-	-	-	-	-	-
CY284108ZXCT	Silicon Labs	IC CLOCK SERV CK410B 56TSSOP PLL: Yes Main Purpose: Intel CPU Servers Input: Crystal Output: HCSL, LVCMOS Number of Circuits: 1 Ratio - Input:Output: 1:19 Differential - Input:Output: No/Yes Frequency - Max: 400MHz Voltage - Supply: 3.135 V ~ 3.465 V Operating Temperature: 0°C ~ 70°C Mounting Type: Surface Mount Package / Case: 56-TFSOP (0.240", 6.10mm Width) Supplier Device Package: 56-TSSOP	Package: 56-TFSOP (0.240", 6.10mm Width)	Stock9,408	Intel CPU Servers	Crystal	HCSL, LVCMOS	1	1:19	No/Yes	400MHz	3.135 V ~ 3.465 V	0°C ~ 70°C	Surface Mount	56-TFSOP (0.240", 6.10mm Width)	56-TSSOP
MPC9819ENR2	IDT, Integrated Device Technology Inc	IC PLL CLOCK GENERATOR 20-SSOP PLL: Yes Main Purpose: CPU, PowerQUICC, Telecom Input: Crystal Output: LVCMOS Number of Circuits: 1 Ratio - Input:Output: 1:8 Differential - Input:Output: No/No Frequency - Max: 133MHz Voltage - Supply: 3.135 V ~ 3.465 V Operating Temperature: -40°C ~ 85°C Mounting Type: Surface Mount Package / Case: 20-SSOP (0.154", 3.90mm Width) Supplier Device Package: 20-QSOP	Package: 20-SSOP (0.154", 3.90mm Width)	Stock4,896	CPU, PowerQUICC, Telecom	Crystal	LVCMOS	1	1:8	No/No	133MHz	3.135 V ~ 3.465 V	-40°C ~ 85°C	Surface Mount	20-SSOP (0.154", 3.90mm Width)	20-QSOP
MPC942PACR2	IDT, Integrated Device Technology Inc	IC CLK DISTR CHIP LV 1:18 32LQFP PLL: No Main Purpose: Intel CPU Servers Input: LVPECL Output: LVCMOS Number of Circuits: 1 Ratio - Input:Output: 1:18 Differential - Input:Output: Yes/No Frequency - Max: 250MHz Voltage - Supply: 2.375 V ~ 3.465 V Operating Temperature: 0°C ~ 70°C Mounting Type: Surface Mount Package / Case: 32-LQFP Supplier Device Package: 32-TQFP (7x7)	Package: 32-LQFP	Stock7,088	Intel CPU Servers	LVPECL	LVCMOS	1	1:18	Yes/No	250MHz	2.375 V ~ 3.465 V	0°C ~ 70°C	Surface Mount	32-LQFP	32-TQFP (7x7)
ICS953201BFLFT	IDT, Integrated Device Technology Inc	IC SYSTEM CLK CHIP AMD-K8 56SSOP PLL: No Main Purpose: PCI Express (PCIe), Timing Control Hub? Input: - Output: Clock Number of Circuits: - Ratio - Input:Output: - Differential - Input:Output: - Frequency - Max: - Voltage - Supply: 3.3V Operating Temperature: 0°C ~ 70°C Mounting Type: Surface Mount Package / Case: 56-BSSOP (0.295", 7.50mm Width) Supplier Device Package: 56-SSOP	Package: 56-BSSOP (0.295", 7.50mm Width)	Stock15,936	PCI Express (PCIe), Timing Control Hub?	-	Clock	-	-	-	-	3.3V	0°C ~ 70°C	Surface Mount	56-BSSOP (0.295", 7.50mm Width)	56-SSOP
ICS952101CF	IDT, Integrated Device Technology Inc	IC FREQ GENERATOR 56-SSOP PLL: - Main Purpose: - Input: - Output: Clock Number of Circuits: - Ratio - Input:Output: - Differential - Input:Output: - Frequency - Max: - Voltage - Supply: - Operating Temperature: - Mounting Type: Surface Mount Package / Case: 56-BSSOP (0.295", 7.50mm Width) Supplier Device Package: 56-SSOP	Package: 56-BSSOP (0.295", 7.50mm Width)	Stock5,152	-	-	Clock	-	-	-	-	-	-	Surface Mount	56-BSSOP (0.295", 7.50mm Width)	56-SSOP
9107C-05CS08LFT	IDT, Integrated Device Technology Inc	IC CPU FREQ GENERATOR 8-SOIC PLL: Yes Main Purpose: CPU Input: Clock, Crystal Output: Clock Number of Circuits: 1 Ratio - Input:Output: 1:2 Differential - Input:Output: No/No Frequency - Max: 120MHz Voltage - Supply: 4.5 V ~ 5.5 V Operating Temperature: 0°C ~ 70°C Mounting Type: Surface Mount Package / Case: 8-SOIC (0.154", 3.90mm Width) Supplier Device Package: 8-SOIC	Package: 8-SOIC (0.154", 3.90mm Width)	Stock2,368	CPU	Clock, Crystal	Clock	1	1:2	No/No	120MHz	4.5 V ~ 5.5 V	0°C ~ 70°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
CDC960DL	Texas Instruments	IC CLOCK DRVR 200 MHZ 48-SSOP PLL: Yes Main Purpose: AMD CPU Input: Crystal Output: LVTTL Number of Circuits: 1 Ratio - Input:Output: 1:17 Differential - Input:Output: No/Yes Frequency - Max: 200MHz Voltage - Supply: 3.135 V ~ 3.465 V Operating Temperature: 0°C ~ 70°C Mounting Type: Surface Mount Package / Case: 48-BSSOP (0.295", 7.50mm Width) Supplier Device Package: 48-SSOP	Package: 48-BSSOP (0.295", 7.50mm Width)	Stock4,240	AMD CPU	Crystal	LVTTL	1	1:17	No/Yes	200MHz	3.135 V ~ 3.465 V	0°C ~ 70°C	Surface Mount	48-BSSOP (0.295", 7.50mm Width)	48-SSOP
SI5338M-B-GMR	Silicon Labs	IC CLK GENERATOR I2C PROGR 24QFN PLL: Yes Main Purpose: Ethernet, Fibre Channel, PCI Express (PCIe), Telecom Input: CML, CMOS, HCSL, HSCL, HSTL, LVDS, LVPECL, SSTL, Crystal Output: HCSL, HSTL, LVCMOS, LVDS, LVPECL, SSTL Number of Circuits: 1 Ratio - Input:Output: 2:4 Differential - Input:Output: Yes/Yes Frequency - Max: 200MHz Voltage - Supply: 1.71 V ~ 3.63 V Operating Temperature: -40°C ~ 85°C Mounting Type: Surface Mount Package / Case: 24-VFQFN Exposed Pad Supplier Device Package: 24-QFN (4x4)	Package: 24-VFQFN Exposed Pad	Stock6,864	Ethernet, Fibre Channel, PCI Express (PCIe), Telecom	CML, CMOS, HCSL, HSCL, HSTL, LVDS, LVPECL, SSTL, Crystal	HCSL, HSTL, LVCMOS, LVDS, LVPECL, SSTL	1	2:4	Yes/Yes	200MHz	1.71 V ~ 3.63 V	-40°C ~ 85°C	Surface Mount	24-VFQFN Exposed Pad	24-QFN (4x4)
TFF11139HN/N1,118	NXP	IC FREQUENCY GENERATOR 24HVQFN PLL: Yes Main Purpose: Ku band VSAT applications Input: Clock Output: Clock Number of Circuits: 1 Ratio - Input:Output: 1:4 Differential - Input:Output: Yes/No Frequency - Max: 14.1GHz Voltage - Supply: 3 V ~ 3.6 V Operating Temperature: -40°C ~ 85°C Mounting Type: Surface Mount Package / Case: 24-VFQFN Exposed Pad Supplier Device Package: 24-HVQFN (4x4)	Package: 24-VFQFN Exposed Pad	Stock7,408	Ku band VSAT applications	Clock	Clock	1	1:4	Yes/No	14.1GHz	3 V ~ 3.6 V	-40°C ~ 85°C	Surface Mount	24-VFQFN Exposed Pad	24-HVQFN (4x4)
9LP525BG-2LF	IDT, Integrated Device Technology Inc	IC PC MAIN CLOCK CK505 56-TSSOP PLL: Yes Main Purpose: Intel CPU Servers Input: Crystal Output: Clock Number of Circuits: 1 Ratio - Input:Output: 1:19 Differential - Input:Output: No/Yes Frequency - Max: 100MHz Voltage - Supply: 3.135 V ~ 3.465 V Operating Temperature: 0°C ~ 70°C Mounting Type: Surface Mount Package / Case: 56-BSSOP (0.295", 7.50mm Width) Supplier Device Package: 56-SSOP	Package: 56-BSSOP (0.295", 7.50mm Width)	Stock6,240	Intel CPU Servers	Crystal	Clock	1	1:19	No/Yes	100MHz	3.135 V ~ 3.465 V	0°C ~ 70°C	Surface Mount	56-BSSOP (0.295", 7.50mm Width)	56-SSOP
932SL901AKLFT	IDT, Integrated Device Technology Inc	IC ARM SERVER CLOCK 48MLF PLL: - Main Purpose: - Input: - Output: - Number of Circuits: - Ratio - Input:Output: - Differential - Input:Output: - Frequency - Max: - Voltage - Supply: - Operating Temperature: - Mounting Type: - Package / Case: - Supplier Device Package: -	Package: -	Stock5,936	-	-	-	-	-	-	-	-	-	-	-	-
MAX3873AETP+	Maxim Integrated	IC RECOV/RETIME 2.5GBPS 20TQFN PLL: Yes Main Purpose: SONET/SDH Input: CML Output: CML Number of Circuits: 1 Ratio - Input:Output: 1:2 Differential - Input:Output: Yes/Yes Frequency - Max: 2.67Gbps Voltage - Supply: 3 V ~ 3.6 V Operating Temperature: -40°C ~ 85°C Mounting Type: Surface Mount Package / Case: 20-WFQFN Exposed Pad Supplier Device Package: 20-TQFN (4x4)	Package: 20-WFQFN Exposed Pad	Stock6,512	SONET/SDH	CML	CML	1	1:2	Yes/Yes	2.67Gbps	3 V ~ 3.6 V	-40°C ~ 85°C	Surface Mount	20-WFQFN Exposed Pad	20-TQFN (4x4)
82V3399BNLG	IDT, Integrated Device Technology Inc	IC PLL WAN SYNC ETH 72-VFQFP PLL: Yes Main Purpose: Ethernet, SONET/SDH, Stratum Input: CMOS, LVDS, PECL Output: CMOS, LVDS, PECL Number of Circuits: 1 Ratio - Input:Output: 6:6 Differential - Input:Output: Yes/Yes Frequency - Max: 644.53MHz Voltage - Supply: 3 V ~ 3.6 V Operating Temperature: -40°C ~ 85°C Mounting Type: Surface Mount Package / Case: 72-VFQFN Exposed Pad Supplier Device Package: 72-QFN	Package: 72-VFQFN Exposed Pad	Stock7,044	Ethernet, SONET/SDH, Stratum	CMOS, LVDS, PECL	CMOS, LVDS, PECL	1	6:6	Yes/Yes	644.53MHz	3 V ~ 3.6 V	-40°C ~ 85°C	Surface Mount	72-VFQFN Exposed Pad	72-QFN
PI6C557-06LE	Diodes Incorporated	IC CLOCK GENERATOR 20-TSSOP PLL: No Main Purpose: PCI Express (PCIe) Input: HCSL Output: HCSL Number of Circuits: 1 Ratio - Input:Output: 2:4 Differential - Input:Output: Yes/Yes Frequency - Max: 200MHz Voltage - Supply: 3.135 V ~ 3.465 V Operating Temperature: 0°C ~ 70°C Mounting Type: Surface Mount Package / Case: 20-TSSOP (0.173", 4.40mm Width) Supplier Device Package: 20-TSSOP	Package: 20-TSSOP (0.173", 4.40mm Width)	Stock7,164	PCI Express (PCIe)	HCSL	HCSL	1	2:4	Yes/Yes	200MHz	3.135 V ~ 3.465 V	0°C ~ 70°C	Surface Mount	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP
SI5338A-B02935-GMR	Silicon Labs	I2C CONTROL, 4-OUTPUT, ANY FREQU PLL: - Main Purpose: - Input: - Output: - Number of Circuits: - Ratio - Input:Output: - Differential - Input:Output: - Frequency - Max: - Voltage - Supply: - Operating Temperature: - Mounting Type: Surface Mount Package / Case: 24-VFQFN Exposed Pad Supplier Device Package: 24-QFN (4x4)	Package: 24-VFQFN Exposed Pad	Stock4,112	-	-	-	-	-	-	-	-	-	Surface Mount	24-VFQFN Exposed Pad	24-QFN (4x4)
SI5338P-B05175-GM	Silicon Labs	I2C CONTROL, 4-OUTPUT, ANY FREQU PLL: - Main Purpose: - Input: - Output: - Number of Circuits: - Ratio - Input:Output: - Differential - Input:Output: - Frequency - Max: - Voltage - Supply: - Operating Temperature: - Mounting Type: Surface Mount Package / Case: 24-VFQFN Exposed Pad Supplier Device Package: 24-QFN (4x4)	Package: 24-VFQFN Exposed Pad	Stock3,472	-	-	-	-	-	-	-	-	-	Surface Mount	24-VFQFN Exposed Pad	24-QFN (4x4)
SI5338B-B08518-GM	Silicon Labs	I2C CONTROL, 4-OUTPUT, ANY FREQU PLL: - Main Purpose: - Input: - Output: - Number of Circuits: - Ratio - Input:Output: - Differential - Input:Output: - Frequency - Max: - Voltage - Supply: - Operating Temperature: - Mounting Type: Surface Mount Package / Case: 24-VFQFN Exposed Pad Supplier Device Package: 24-QFN (4x4)	Package: 24-VFQFN Exposed Pad	Stock6,656	-	-	-	-	-	-	-	-	-	Surface Mount	24-VFQFN Exposed Pad	24-QFN (4x4)
SI5338B-B08414-GM	Silicon Labs	I2C CONTROL, 4-OUTPUT, ANY FREQU PLL: - Main Purpose: - Input: - Output: - Number of Circuits: - Ratio - Input:Output: - Differential - Input:Output: - Frequency - Max: - Voltage - Supply: - Operating Temperature: - Mounting Type: Surface Mount Package / Case: 24-VFQFN Exposed Pad Supplier Device Package: 24-QFN (4x4)	Package: 24-VFQFN Exposed Pad	Stock4,288	-	-	-	-	-	-	-	-	-	Surface Mount	24-VFQFN Exposed Pad	24-QFN (4x4)
SI5338C-B08184-GM	Silicon Labs	I2C CONTROL, 4-OUTPUT, ANY FREQU PLL: - Main Purpose: - Input: - Output: - Number of Circuits: - Ratio - Input:Output: - Differential - Input:Output: - Frequency - Max: - Voltage - Supply: - Operating Temperature: - Mounting Type: Surface Mount Package / Case: 24-VFQFN Exposed Pad Supplier Device Package: 24-QFN (4x4)	Package: 24-VFQFN Exposed Pad	Stock2,320	-	-	-	-	-	-	-	-	-	Surface Mount	24-VFQFN Exposed Pad	24-QFN (4x4)
SI5338C-B03028-GM	Silicon Labs	I2C CONTROL, 4-OUTPUT, ANY FREQU PLL: - Main Purpose: - Input: - Output: - Number of Circuits: - Ratio - Input:Output: - Differential - Input:Output: - Frequency - Max: - Voltage - Supply: - Operating Temperature: - Mounting Type: Surface Mount Package / Case: 24-VFQFN Exposed Pad Supplier Device Package: 24-QFN (4x4)	Package: 24-VFQFN Exposed Pad	Stock7,456	-	-	-	-	-	-	-	-	-	Surface Mount	24-VFQFN Exposed Pad	24-QFN (4x4)
SI5338Q-B06329-GMR	Silicon Labs	I2C CONTROL, 4-OUTPUT, ANY FREQU PLL: - Main Purpose: - Input: - Output: - Number of Circuits: - Ratio - Input:Output: - Differential - Input:Output: - Frequency - Max: - Voltage - Supply: - Operating Temperature: - Mounting Type: Surface Mount Package / Case: 24-VFQFN Exposed Pad Supplier Device Package: 24-QFN (4x4)	Package: 24-VFQFN Exposed Pad	Stock5,088	-	-	-	-	-	-	-	-	-	Surface Mount	24-VFQFN Exposed Pad	24-QFN (4x4)
SI5338M-B04505-GMR	Silicon Labs	I2C CONTROL, 4-OUTPUT, ANY FREQU PLL: - Main Purpose: - Input: - Output: - Number of Circuits: - Ratio - Input:Output: - Differential - Input:Output: - Frequency - Max: - Voltage - Supply: - Operating Temperature: - Mounting Type: Surface Mount Package / Case: 24-VFQFN Exposed Pad Supplier Device Package: 24-QFN (4x4)	Package: 24-VFQFN Exposed Pad	Stock7,056	-	-	-	-	-	-	-	-	-	Surface Mount	24-VFQFN Exposed Pad	24-QFN (4x4)
SI5338C-B09588-GM	Silicon Labs	IC CLOCK GENERATOR QUAD 24QFN PLL: - Main Purpose: - Input: - Output: - Number of Circuits: - Ratio - Input:Output: - Differential - Input:Output: - Frequency - Max: - Voltage - Supply: - Operating Temperature: - Mounting Type: - Package / Case: - Supplier Device Package: -	Package: -	Stock3,936	-	-	-	-	-	-	-	-	-	-	-	-
SI52112-B5-GM3R	Silicon Labs	IC OSC PCI EXPRESS 2OUT 10TDFN PLL: - Main Purpose: - Input: - Output: - Number of Circuits: - Ratio - Input:Output: - Differential - Input:Output: - Frequency - Max: - Voltage - Supply: - Operating Temperature: - Mounting Type: - Package / Case: - Supplier Device Package: -	Package: -	Stock2,144	-	-	-	-	-	-	-	-	-	-	-	-
932SQ426AKLFT	Renesas Electronics Corporation	VFQFPN 9.00X9.00X0.90 MM, 0.50MM PLL: Yes Main Purpose: PCI Express (PCIe) Input: Crystal Output: HCSL Number of Circuits: 1 Ratio - Input:Output: 1:5 Differential - Input:Output: No/Yes Frequency - Max: 100MHz Voltage - Supply: 3.135V ~ 3.465V Operating Temperature: 0°C ~ 70°C Mounting Type: Surface Mount Package / Case: 64-VFQFN Exposed Pad Supplier Device Package: 64-VFQFPN (9x9)	Package: -	Request a Quote	PCI Express (PCIe)	Crystal	HCSL	1	1:5	No/Yes	100MHz	3.135V ~ 3.465V	0°C ~ 70°C	Surface Mount	64-VFQFN Exposed Pad	64-VFQFPN (9x9)
ML6430CH	Rochester Electronics, LLC	CONSUMER CIRCUIT, BICMOS, PQFP32 PLL: - Main Purpose: - Input: - Output: - Number of Circuits: - Ratio - Input:Output: - Differential - Input:Output: - Frequency - Max: - Voltage - Supply: - Operating Temperature: - Mounting Type: - Package / Case: - Supplier Device Package: -	Package: -	Request a Quote	-	-	-	-	-	-	-	-	-	-	-	-
9DBL0252BKILFT	Renesas Electronics Corporation	VFQFPN 4.00X4.00X0.90 MM, 0.50MM PLL: Yes with Bypass Main Purpose: PCI Express (PCIe) Input: HCSL Output: LP-HCSL Number of Circuits: 1 Ratio - Input:Output: 2:8 Differential - Input:Output: Yes/Yes Frequency - Max: 200MHz Voltage - Supply: 3.135V ~ 3.465V Operating Temperature: -40°C ~ 85°C (TA) Mounting Type: Surface Mount Package / Case: 24-VFQFN Exposed Pad Supplier Device Package: 24-QFN (4x4)	Package: -	Request a Quote	PCI Express (PCIe)	HCSL	LP-HCSL	1	2:8	Yes/Yes	200MHz	3.135V ~ 3.465V	-40°C ~ 85°C (TA)	Surface Mount	24-VFQFN Exposed Pad	24-QFN (4x4)