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LMKDB1 Ultra-Low Jitter Clock Buffers

Texas Instruments LMKDB1 Ultra-Low Jitter Clock Buffers are a family of extremely-low-jitter LP-HCSL buffers and MUX that support PCIe Gen 1 to Gen 6 and are DB2000QL compliant. The devices provide flexible power-up sequence, fail-safe inputs, individual output enable and disable pins, loss of input signal (LOS) detection and automatic output disable features, and excellent power supply noise rejection performance. Both 1.8V and 3.3V supply voltages are supported. For the Texas Instruments LMKDB1120, a 1.8V power supply saves 250mW power compared to 3.3V.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (PEN) Filter the results in the table by unit price based on your quantity.	Qty.	Number of Outputs	Max Output Freq	Propagation Delay - Max	Output Type	Package / Case	Input Type	Maximum Input Frequency	Supply Voltage - Min	Supply Voltage - Max	Series	Minimum Operating Temperature	Maximum Operating Temperature
Clock Buffer 8-output LP-HCSL clo ck buffer for PCIe LMKDB1108Z85RKPT Texas Instruments 1: S/24.87 750In Stock	Mfr. Part # LMKDB1108Z85RKPT Mouser Part # 595-LMKDB1108Z85RKPT	Texas Instruments	Clock Buffer 8-output LP-HCSL clo ck buffer for PCIe Learn More about Texas Instruments ti lmkdb1 ultra low jitter clock buffers	Datasheet	750In Stock	Cut Tape S/24.87 S/19.07 S/17.59 S/16.04 Reel S/15.57 View S/14.87 S/14.01 S/13.86 MouseReel Available	Min.: 1 Mult.: 1 : 250	8 Output	400 MHz	1 ns	LP-HCSL	VQFN-40	LP-HCSL	400 MHz	1.71 V	3.6 V	LMKDB1108	- 40 C	+ 105 C
Clock Buffer High performance com pliant two output s LMKDB1102REYT Texas Instruments 1: S/16.35 3,566In Stock	Mfr. Part # LMKDB1102REYT Mouser Part # 595-LMKDB1102REYT	Texas Instruments	Clock Buffer High performance com pliant two output s Learn More about Texas Instruments ti lmkdb1 ultra low jitter clock buffers	Datasheet	3,566In Stock	Cut Tape S/16.35 S/12.34 S/11.33 S/10.24 Reel S/9.65 View S/9.42 S/8.95 S/8.84 S/8.80 MouseReel Available	Min.: 1 Mult.: 1 : 250	5 Output			LP-HCSL	VQFN-20	LP-HCSL	400 MHz	1.71 V	3.6 V	LMKDB1102	- 40 C	+ 105 C
Clock Buffer 4-output LP-HCSL clo ck buffer for PCIe LMKDB1104Z100REXT Texas Instruments 1: S/17.36 1,759In Stock	Mfr. Part # LMKDB1104Z100REXT Mouser Part # 595-LMKDB1104Z100RET	Texas Instruments	Clock Buffer 4-output LP-HCSL clo ck buffer for PCIe Learn More about Texas Instruments ti lmkdb1 ultra low jitter clock buffers	Datasheet	1,759In Stock	Cut Tape S/17.36 S/13.12 S/12.07 S/10.90 Reel S/10.32 View S/9.89 S/9.58 S/9.42 MouseReel Available	Min.: 1 Mult.: 1 : 250	4 Output			LP-HCSL	VQFN-28	LP-HCSL	400 MHz	1.71 V	3.6 V	LMKDB1104	- 40 C	+ 105 C
Clock Buffer DB2000QL-compliant 2 0-output clock buff LMKDB1120Z85NPPT Texas Instruments 1: S/33.01 250In Stock	Mfr. Part # LMKDB1120Z85NPPT Mouser Part # 595-LMKDB1120Z85NPPT	Texas Instruments	Clock Buffer DB2000QL-compliant 2 0-output clock buff Learn More about Texas Instruments ti lmkdb1 ultra low jitter clock buffers	Datasheet	250In Stock	S/33.01 S/25.50 S/23.63 S/21.45 View S/19.81 S/19.66 S/19.11 S/18.68 Quote	Min.: 1 Mult.: 1	20 Output	400 MHz	1 ns	LP-HCSL	TLGA-80	LP-HCSL	400 MHz	1.71 V	3.6 V	LMKDB1120	- 40 C	+ 105 C
Clock Buffer 2-input 2-output LP- HCSL clock MUX for LMKDB1202REYT Texas Instruments 1: S/16.97 560In Stock 1,500Expected 9/29/2026	Mfr. Part # LMKDB1202REYT Mouser Part # 595-LMKDB1202REYT	Texas Instruments	Clock Buffer 2-input 2-output LP- HCSL clock MUX for Learn More about Texas Instruments ti lmkdb12xx lp hcsl clock multiplexers	Datasheet	560In Stock 1,500Expected 9/29/2026	Cut Tape S/16.97 S/12.81 S/11.79 S/10.67 Reel S/10.08 View S/9.65 S/9.34 S/9.19 MouseReel Available	Min.: 1 Mult.: 1 : 250	2 Output	400 MHz		LP-HCSL	VQFN-20	LP-HCSL	400 MHz	1.71 V	3.6 V	LMKDB1202	- 40 C	+ 105 C
Clock Buffer 2-input 4-output LP- HCSL clock MUX for LMKDB1204REXT Texas Instruments 1: S/21.64 227In Stock 3,000Expected 10/6/2026	Mfr. Part # LMKDB1204REXT Mouser Part # 595-LMKDB1204REXT	Texas Instruments	Clock Buffer 2-input 4-output LP- HCSL clock MUX for Learn More about Texas Instruments ti lmkdb12xx lp hcsl clock multiplexers	Datasheet	227In Stock 3,000Expected 10/6/2026	Cut Tape S/21.64 S/16.50 S/15.22 S/13.82 Reel S/13.12 View S/12.61 S/12.38 S/12.22 MouseReel Available	Min.: 1 Mult.: 1 : 250	4 Output			LP-HCSL	VQFN-28	Differential	400 MHz	1.71 V	3.6 V	LMKDB1204	- 40 C	+ 105 C
Clock Buffer 8-output LP-HCSL clo ck buffer for PCIe LMKDB1108Z100RKPT Texas Instruments 1: S/24.17 160In Stock	Mfr. Part # LMKDB1108Z100RKPT Mouser Part # 595-LMKDB1108Z100RKT	Texas Instruments	Clock Buffer 8-output LP-HCSL clo ck buffer for PCIe Learn More about Texas Instruments ti lmkdb1 ultra low jitter clock buffers	Datasheet	160In Stock	Cut Tape S/24.17 S/18.57 S/17.13 S/16.35 Reel S/15.57 View S/14.29 S/14.01 S/13.86 MouseReel Available	Min.: 1 Mult.: 1 : 250	8 Output	400 MHz	1 ns	LP-HCSL	VQFN-40	LP-HCSL	400 MHz	1.71 V	3.6 V	LMKDB1108	- 40 C	+ 105 C
Clock Buffer DB2000QL-compliant 2 0-output clock buff LMKDB1120Z100NPPR Texas Instruments 1: S/28.65 35In Stock 2,500Expected 11/16/2026	Mfr. Part # LMKDB1120Z100NPPR Mouser Part # 595-LMKDB1120Z100NPR	Texas Instruments	Clock Buffer DB2000QL-compliant 2 0-output clock buff Learn More about Texas Instruments ti lmkdb1 ultra low jitter clock buffers	Datasheet	35In Stock 2,500Expected 11/16/2026	S/28.65 S/22.07 S/20.44 S/17.83 View S/16.97 S/16.70 S/16.58 S/15.84	Min.: 1 Mult.: 1	20 Output	400 MHz	1 ns	LP-HCSL	TLGA-80	LP-HCSL	400 MHz	1.71 V	3.6 V	LMKDB1120	- 40 C	+ 105 C
Clock Buffer DB2000QL-compliant 2 0-output clock buff LMKDB1120Z100NPPT Texas Instruments 1: S/32.93 138In Stock	Mfr. Part # LMKDB1120Z100NPPT Mouser Part # 595-LMKDB1120Z100NPT	Texas Instruments	Clock Buffer DB2000QL-compliant 2 0-output clock buff Learn More about Texas Instruments ti lmkdb1 ultra low jitter clock buffers	Datasheet	138In Stock	S/32.93 S/25.42 S/23.51 S/22.73 View S/19.27 Quote	Min.: 1 Mult.: 1	20 Output	400 MHz	1 ns	LP-HCSL	TLGA-80	LP-HCSL	400 MHz	1.71 V	3.6 V	LMKDB1120	- 40 C	+ 105 C
Clock Buffer DB2000QL-compliant 2 0-output clock buff LMKDB1120Z85NPPR Texas Instruments 1: S/25.85 245In Stock	Mfr. Part # LMKDB1120Z85NPPR Mouser Part # 595-LMKDB1120Z85NPPR	Texas Instruments	Clock Buffer DB2000QL-compliant 2 0-output clock buff Learn More about Texas Instruments ti lmkdb1 ultra low jitter clock buffers	Datasheet	245In Stock	S/25.85 S/19.81 S/18.33 S/16.66 View S/15.88 S/15.61 S/15.06 S/14.40	Min.: 1 Mult.: 1	20 Output	400 MHz	1 ns	LP-HCSL	TLGA-80	LP-HCSL	400 MHz	1.71 V	3.6 V	LMKDB1120	- 40 C	+ 105 C
Clock Buffer 4-output LP-HCSL clo ck buffer for PCIe LMKDB1104Z85REXT Texas Instruments 1: S/17.75 750On Order	Mfr. Part # LMKDB1104Z85REXT Mouser Part # 595-LMKDB1104Z85REXT	Texas Instruments	Clock Buffer 4-output LP-HCSL clo ck buffer for PCIe Learn More about Texas Instruments ti lmkdb1 ultra low jitter clock buffers	Datasheet	750On Order On Order Ship Dates Mfr. #: LMKDB1104Z85REXT Stock: 0 On Order: 250 Expected 5/13/2027 500 Expected 5/24/2027 Factory Lead-Time: 16 Weeks	Cut Tape S/17.75 S/13.47 S/12.38 S/11.21 Reel S/10.24 View S/9.89 S/9.54 S/9.34 MouseReel Available	Min.: 1 Mult.: 1 : 250	4 Output	400 MHz		LP-HCSL	VQFN-28	LP-HCSL	400 MHz	1.71 V	3.6 V	LMKDB1104	- 40 C	+ 105 C
Clock Buffer 2-input 4-output LP- HCSL clock MUX for LMKDB1204REXR Texas Instruments 1: S/19.15 3,000Expected 1/15/2027	Mfr. Part # LMKDB1204REXR Mouser Part # 595-LMKDB1204REXR	Texas Instruments	Clock Buffer 2-input 4-output LP- HCSL clock MUX for Learn More about Texas Instruments ti lmkdb12xx lp hcsl clock multiplexers	Datasheet	3,000Expected 1/15/2027	S/19.15 S/14.56 S/13.39 S/12.14 View S/11.52 S/11.33 S/10.20	Min.: 1 Mult.: 1	4 Output			LP-HCSL	VQFN-28	Differential	400 MHz	1.71 V	3.6 V	LMKDB1204	- 40 C	+ 105 C
Clock Buffer High performance com pliant two output s LMKDB1102REYR Texas Instruments 1: S/13.74 Non-Stocked Lead-Time 16 Weeks	Mfr. Part # LMKDB1102REYR Mouser Part # 595-LMKDB1102REYR	Texas Instruments	Clock Buffer High performance com pliant two output s Learn More about Texas Instruments ti lmkdb1 ultra low jitter clock buffers	Datasheet	Non-Stocked Lead-Time 16 Weeks	Cut Tape S/13.74 S/10.24 S/9.38 S/8.41 Reel S/7.40 View S/7.94 S/7.75 S/7.43 S/7.36 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	5 Output			LP-HCSL	VQFN-20	LP-HCSL	400 MHz	1.71 V	3.6 V	LMKDB1102	- 40 C	+ 105 C
Clock Buffer 4-output LP-HCSL clo ck buffer for PCIe LMKDB1104Z100REXR Texas Instruments 3,000: S/7.40 Non-Stocked Lead-Time 16 Weeks	Mfr. Part # LMKDB1104Z100REXR Mouser Part # 595-LMKDB1104Z100RER	Texas Instruments	Clock Buffer 4-output LP-HCSL clo ck buffer for PCIe Learn More about Texas Instruments ti lmkdb1 ultra low jitter clock buffers	Datasheet	Non-Stocked Lead-Time 16 Weeks	Reel S/7.40	Min.: 3,000 Mult.: 3,000 : 3,000	4 Output			LP-HCSL	VQFN-28	LP-HCSL	400 MHz	1.71 V	3.6 V	LMKDB1104	- 40 C	+ 105 C
Clock Buffer 4-output LP-HCSL clo ck buffer for PCIe LMKDB1104Z85REXR Texas Instruments 1: S/15.06 Non-Stocked Lead-Time 16 Weeks	Mfr. Part # LMKDB1104Z85REXR Mouser Part # 595-LMKDB1104Z85REXR	Texas Instruments	Clock Buffer 4-output LP-HCSL clo ck buffer for PCIe Learn More about Texas Instruments ti lmkdb1 ultra low jitter clock buffers	Datasheet	Non-Stocked Lead-Time 16 Weeks	Cut Tape S/15.06 S/11.21 S/10.28 S/9.23 View Reel S/7.51 S/8.72 S/8.52 S/8.10 S/7.51 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	4 Output	400 MHz		LP-HCSL	VQFN-28	LP-HCSL	400 MHz	1.71 V	3.6 V	LMKDB1104	- 40 C	+ 105 C
Clock Buffer 8-output LP-HCSL clo ck buffer for PCIe LMKDB1108Z100RKPR Texas Instruments 1: S/21.14 Non-Stocked Lead-Time 16 Weeks	Mfr. Part # LMKDB1108Z100RKPR Mouser Part # 595-LMKDB1108Z100RKR	Texas Instruments	Clock Buffer 8-output LP-HCSL clo ck buffer for PCIe Learn More about Texas Instruments ti lmkdb1 ultra low jitter clock buffers	Datasheet	Non-Stocked Lead-Time 16 Weeks	Cut Tape S/21.14 S/16.11 S/14.87 S/13.47 View Reel S/11.60 S/12.81 S/12.53 S/12.11 S/11.60 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	8 Output	400 MHz	1 ns	LP-HCSL	VQFN-40	LP-HCSL	400 MHz	1.71 V	3.6 V	LMKDB1108	- 40 C	+ 105 C
Clock Buffer 8-output LP-HCSL clo ck buffer for PCIe LMKDB1108Z85RKPR Texas Instruments 1: S/21.14 Non-Stocked Lead-Time 16 Weeks	Mfr. Part # LMKDB1108Z85RKPR Mouser Part # 595-LMKDB1108Z85RKPR	Texas Instruments	Clock Buffer 8-output LP-HCSL clo ck buffer for PCIe Learn More about Texas Instruments ti lmkdb1 ultra low jitter clock buffers	Datasheet	Non-Stocked Lead-Time 16 Weeks	Cut Tape S/21.14 S/16.11 S/14.87 S/13.47 View Reel S/11.91 S/12.81 S/12.53 S/12.42 S/11.91 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	8 Output	400 MHz	1 ns	LP-HCSL	VQFN-40	LP-HCSL	400 MHz	1.71 V	3.6 V	LMKDB1108	- 40 C	+ 105 C
Clock Buffer High performance 1:1 2-output clock buff LMKDB1112Z85ZSFR Texas Instruments 2,500: S/13.31 Non-Stocked Lead-Time 16 Weeks New Product	Mfr. Part # LMKDB1112Z85ZSFR Mouser Part # 595-LMKDB1112Z85ZSFR New Product	Texas Instruments	Clock Buffer High performance 1:1 2-output clock buff Learn More about Texas Instruments ti lmkdb1 ultra low jitter clock buffers	Datasheet	Non-Stocked Lead-Time 16 Weeks	Reel S/13.31	Min.: 2,500 Mult.: 2,500 : 2,500	12 Output	400 MHz			LGA-80		400 MHz	1.71 V	3.6 V		- 40 C	+ 105 C
Clock Buffer High performance 1:12-output clock buffer for PCIe 80-LGA -40 to 105 LMKDB1112Z85ZSFT Texas Instruments 250: S/16.97 Non-Stocked Lead-Time 16 Weeks New Product	Mfr. Part # LMKDB1112Z85ZSFT Mouser Part # 595-LMKDB1112Z85ZSFT New Product	Texas Instruments	Clock Buffer High performance 1:12-output clock buffer for PCIe 80-LGA -40 to 105 Learn More about Texas Instruments ti lmkdb1 ultra low jitter clock buffers	Datasheet	Non-Stocked Lead-Time 16 Weeks	Reel S/16.97 S/16.35 S/16.08 S/15.96	Min.: 250 Mult.: 250 : 250	12 Output	400 MHz	1 ns	LPHCSL	LGA-80	LPHCSL	400 MHz	1.8 V	3.3 V	LMKDB1112	- 40 C	+ 105 C
Clock Buffer 2-input 2-output LP- HCSL clock MUX for LMKDB1202REYR Texas Instruments 1: S/14.99 Non-Stocked Lead-Time 16 Weeks	Mfr. Part # LMKDB1202REYR Mouser Part # 595-LMKDB1202REYR	Texas Instruments	Clock Buffer 2-input 2-output LP- HCSL clock MUX for Learn More about Texas Instruments ti lmkdb12xx lp hcsl clock multiplexers	Datasheet	Non-Stocked Lead-Time 16 Weeks	Cut Tape S/14.99 S/11.21 S/10.28 S/9.26 View Reel S/7.86 S/8.76 S/8.52 S/8.29 S/7.86 Quote MouseReel Available	Min.: 1 Mult.: 1 : 3,000	2 Output	400 MHz		LP-HCSL	VQFN-20	LP-HCSL	400 MHz	1.71 V	3.6 V	LMKDB1202	- 40 C	+ 105 C
Clock Buffer Four-output LP-HCSL clock buffer for PCI LMKDB1104FS85REXR Texas Instruments 1: S/16.43 Non-Stocked Lead-Time 16 Weeks New Product	Mfr. Part # LMKDB1104FS85REXR Mouser Part # 595-MKDB1104FS85REXR New Product	Texas Instruments	Clock Buffer Four-output LP-HCSL clock buffer for PCI	Datasheet	Non-Stocked Lead-Time 16 Weeks	Cut Tape S/16.43 S/12.38 S/11.41 S/10.28 View Reel S/8.60 S/9.77 S/9.61 S/9.30 S/8.60 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	4 Output	400 MHz		LP-HCSL	VQFN-28	LP-HCSL	400 MHz	1.71 V	3.6 V	LMKDB1104	- 40 C	+ 105 C
Clock Buffer Eight-output LP-HCSL clock buffer for PC LMKDB1108FS85RKPR Texas Instruments 3,000: S/12.73 Non-Stocked Lead-Time 16 Weeks New Product	Mfr. Part # LMKDB1108FS85RKPR Mouser Part # 595-MKDB1108FS85RKPR New Product	Texas Instruments	Clock Buffer Eight-output LP-HCSL clock buffer for PC	Datasheet	Non-Stocked Lead-Time 16 Weeks	Reel S/12.73	Min.: 3,000 Mult.: 3,000 : 3,000	8 Output	400 MHz		LP-HCSL	VQFN-40	LP-HCSL	400 MHz	1.71 V	3.6 V	LMKDB1108	- 40 C	+ 105 C
Clock Buffer High performance 1:12-output clock buffer for PCIe 80-LGA -40 to 105 LMKDB1112Z100ZSFR Texas Instruments 2,500: S/13.23 Non-Stocked Lead-Time 16 Weeks New Product	Mfr. Part # LMKDB1112Z100ZSFR Mouser Part # 595-MKDB1112Z100ZSFR New Product	Texas Instruments	Clock Buffer High performance 1:12-output clock buffer for PCIe 80-LGA -40 to 105	Datasheet	Non-Stocked Lead-Time 16 Weeks	Reel S/13.23	Min.: 2,500 Mult.: 2,500 : 2,500	12 Output	400 MHz	1 ns	LPHCSL	LGA-80	LPHCSL	400 MHz	1.8 V	3.3 V	LMKDB1112	- 40 C	+ 105 C
Clock Buffer High performance 1:12-output clock buffer for PCIe 80-LGA -40 to 105 LMKDB1112Z100ZSFT Texas Instruments 250: S/17.01 Non-Stocked Lead-Time 16 Weeks New Product	Mfr. Part # LMKDB1112Z100ZSFT Mouser Part # 595-MKDB1112Z100ZSFT New Product	Texas Instruments	Clock Buffer High performance 1:12-output clock buffer for PCIe 80-LGA -40 to 105 Learn More about Texas Instruments ti lmkdb1 ultra low jitter clock buffers	Datasheet	Non-Stocked Lead-Time 16 Weeks	Reel S/17.01 S/16.74 S/16.62 S/16.50	Min.: 250 Mult.: 250 : 250	12 Output	400 MHz	1 ns	LPHCSL	LGA-80	LPHCSL	400 MHz	1.8 V	3.3 V	LMKDB1112	- 40 C	+ 105 C
Clock Buffer DB2000QL-compliant 2 0-output clock buff LMKDB1120FS85NPPR Texas Instruments 4,000: S/17.44 Non-Stocked Lead-Time 16 Weeks New Product	Mfr. Part # LMKDB1120FS85NPPR Mouser Part # 595-MKDB1120FS85NPPR New Product	Texas Instruments	Clock Buffer DB2000QL-compliant 2 0-output clock buff	Datasheet	Non-Stocked Lead-Time 16 Weeks	Reel S/17.44	Min.: 4,000 Mult.: 4,000 : 4,000	20 Output	400 MHz		LP-HCSL	TLGA-80	LP-HCSL		1.71 V	3.6 V	LMKDB1120	- 40 C	+ 105 C

LMKDB1 Ultra-Low Jitter Clock Buffers

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