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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Description Datasheet Availability Pricing (USD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model 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
Texas Instruments Clock Buffer High performance com pliant two output s
Datasheet
703In Stock
500Expected 2026/03/31
MouseReel Available
Min.: 1
Mult.: 1
Reel: 250

5 Output LP-HCSL VQFN-20 LP-HCSL 400 MHz 1.71 V 3.6 V LMKDB1102 - 40 C + 105 C
Texas Instruments Clock Buffer 4-output LP-HCSL clo ck buffer for PCIe
Datasheet
2,145In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 250

4 Output LP-HCSL VQFN-28 LP-HCSL 400 MHz 1.71 V 3.6 V LMKDB1104 - 40 C + 105 C
Texas Instruments Clock Buffer 2-input 2-output LP- HCSL clock MUX for
Datasheet
2,114In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 250

2 Output 400 MHz LP-HCSL VQFN-20 LP-HCSL 400 MHz 1.71 V 3.6 V LMKDB1202 - 40 C + 105 C
Texas Instruments Clock Buffer 2-input 4-output LP- HCSL clock MUX for
Datasheet
1,015In Stock
1,000Expected 2026/05/28
Min.: 1
Mult.: 1

4 Output LP-HCSL VQFN-28 Differential 400 MHz 1.71 V 3.6 V LMKDB1204 - 40 C + 105 C
Texas Instruments Clock Buffer 8-output LP-HCSL clo ck buffer for PCIe
Datasheet
390In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
Texas Instruments Clock Buffer DB2000QL-compliant 2 0-output clock buff
Datasheet
781In Stock
2,500Expected 2026/07/09
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
Texas Instruments Clock Buffer DB2000QL-compliant 2 0-output clock buff
Datasheet
715In Stock
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
Texas Instruments Clock Buffer DB2000QL-compliant 2 0-output clock buff
Datasheet
243In Stock
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
Texas Instruments Clock Buffer DB2000QL-compliant 2 0-output clock buff
Datasheet
250In Stock
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
Texas Instruments Clock Buffer 8-output LP-HCSL clo ck buffer for PCIe
Datasheet
247In Stock
250Expected 2026/03/31
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
Texas Instruments Clock Buffer 4-output LP-HCSL clo ck buffer for PCIe
Datasheet
250Expected 2026/03/31
MouseReel Available
Min.: 1
Mult.: 1
Reel: 250

4 Output 400 MHz LP-HCSL VQFN-28 LP-HCSL 400 MHz 1.71 V 3.6 V LMKDB1104 - 40 C + 105 C
Texas Instruments Clock Buffer High performance com pliant two output s
Datasheet
Non-Stocked Lead-Time 12 Weeks
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000
5 Output LP-HCSL VQFN-20 LP-HCSL 400 MHz 1.71 V 3.6 V LMKDB1102 - 40 C + 105 C
Texas Instruments Clock Buffer 4-output LP-HCSL clo ck buffer for PCIe
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1
Mult.: 1
Reel: 3,000
4 Output LP-HCSL VQFN-28 LP-HCSL 400 MHz 1.71 V 3.6 V LMKDB1104 - 40 C + 105 C
Texas Instruments Clock Buffer 4-output LP-HCSL clo ck buffer for PCIe
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 3,000
Mult.: 3,000
Reel: 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
Texas Instruments Clock Buffer 8-output LP-HCSL clo ck buffer for PCIe
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 2,500
Mult.: 2,500
Reel: 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
Texas Instruments Clock Buffer 8-output LP-HCSL clo ck buffer for PCIe
Datasheet
Non-Stocked Lead-Time 12 Weeks
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
Texas Instruments Clock Buffer High performance 1:1 2-output clock buff
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 2,500
Mult.: 2,500
Reel: 2,500
12 Output 400 MHz LGA-80 400 MHz 1.71 V 3.6 V - 40 C + 105 C
Texas Instruments Clock Buffer 2-input 2-output LP- HCSL clock MUX for
Datasheet
Non-Stocked Lead-Time 12 Weeks
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
Texas Instruments Clock Buffer 2-input 4-output LP- HCSL clock MUX for
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1
Mult.: 1

4 Output LP-HCSL VQFN-28 Differential 400 MHz 1.71 V 3.6 V LMKDB1204 - 40 C + 105 C
Texas Instruments Clock Buffer Four-output LP-HCSL clock buffer for PCI
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 3,000
Mult.: 3,000
Reel: 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
Texas Instruments Clock Buffer Eight-output LP-HCSL clock buffer for PC
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 3,000
Mult.: 3,000
Reel: 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
Texas Instruments Clock Buffer DB2000QL-compliant 2 0-output clock buff
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 4,000
Mult.: 4,000
Reel: 4,000

20 Output 400 MHz LP-HCSL TLGA-80 LP-HCSL 1.71 V 3.6 V LMKDB1120 - 40 C + 105 C