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 (PLN) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Number of Outputs
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Output Type
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Maximum Input Frequency
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Supply Voltage - Max
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Texas Instruments Clock Buffer 8-output LP-HCSL clo ck buffer for PCIe
Datasheet
750In Stock
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
Texas Instruments Clock Buffer 4-output LP-HCSL clo ck buffer for PCIe
Datasheet
1 898In Stock
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
Texas Instruments Clock Buffer 2-input 4-output LP- HCSL clock MUX for
Datasheet
2 673In Stock
3 000Expected 1/15/2027
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 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 2-input 2-output LP- HCSL clock MUX for
Datasheet
560In Stock
1 500Expected 9/29/2026
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
Texas Instruments Clock Buffer 2-input 4-output LP- HCSL clock MUX for
Datasheet
281In Stock
3 000Expected 10/6/2026
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
Texas Instruments Clock Buffer High performance com pliant two output s
Datasheet
557In Stock
3 500Expected 10/2/2026
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
Texas Instruments Clock Buffer 8-output LP-HCSL clo ck buffer for PCIe
Datasheet
160In Stock
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
Texas Instruments Clock Buffer DB2000QL-compliant 2 0-output clock buff
Datasheet
35In Stock
2 500Expected 11/16/2026
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
148In 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
255In 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 4-output LP-HCSL clo ck buffer for PCIe
Datasheet
750On Order
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
Texas Instruments Clock Buffer High performance com pliant two output s
Datasheet
Non-Stocked Lead-Time 16 Weeks
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
Texas Instruments Clock Buffer 4-output LP-HCSL clo ck buffer for PCIe
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 1
Mult.: 1
: 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 16 Weeks
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
Texas Instruments Clock Buffer 8-output LP-HCSL clo ck buffer for PCIe
Datasheet
Non-Stocked Lead-Time 16 Weeks
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
Texas Instruments Clock Buffer 8-output LP-HCSL clo ck buffer for PCIe
Datasheet
Non-Stocked Lead-Time 16 Weeks
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
Texas Instruments Clock Buffer High performance 1:1 2-output clock buff
Datasheet
Non-Stocked Lead-Time 16 Weeks
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
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
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
Texas Instruments Clock Buffer 2-input 2-output LP- HCSL clock MUX for
Datasheet
Non-Stocked Lead-Time 16 Weeks
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
Texas Instruments Clock Buffer Four-output LP-HCSL clock buffer for PCI
Datasheet
Non-Stocked Lead-Time 16 Weeks
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
Texas Instruments Clock Buffer Eight-output LP-HCSL clock buffer for PC
Datasheet
Non-Stocked Lead-Time 16 Weeks
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
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
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
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
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
Texas Instruments Clock Buffer DB2000QL-compliant 2 0-output clock buff
Datasheet
Non-Stocked Lead-Time 16 Weeks
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