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Clocking Switchtec™ PCIe® Switches

Create flexible and powerful PCIe® solutions when you clock our Switchtec™ PCIe switches with our easy-to-configure suite of PCIe Gen 1–5 multiple-output clock generators, buffers, crystals and MEMS oscillators. These fully designed, tested and validated solutions reduce your design risk and help you get to market more quickly. They also optimize costs, board footprints and performance. Our ClockWorks® Configurator and product selection tools make it easy to customize your timing devices to meet the specific requirements of your end application.

PCIe Switch Clock and Timing Made Easy

  • Fully designed, tested and validated to achieve fast time to market with reduced risk
  • Turnkey reference designs and development kits
  • Easy to design-in, yet simple to modify and customize with our clock design tools
  • Expert technical support

Clock and Timing for Every PCIe Application

  • Highly reliable clock solutions for demanding end applications
  • Complete PCIe Gen 1–5 timing solutions including clock generators, buffers, oscillators, crystals
  • Fully system-level tested and validated
  • Reduced risk with programmable features
  • Automotive PCIe Gen 1–5 solutions available
FunctionRecommended Part NumbersDescriptionSelection Criterion
Switchtec™ PCIe® Gen 4 SwitchesPM40100   PM40084   PM40068
PM40052   PM40036   PM40028
PM41100   PM41084   PM41068
PM41052   PM41036   PM41028
PM42100   PM42084   PM42068
PM42052   PM42036   PM42028
PFX Fanout PCIe Switches

PAX Advanced Fabric PCIe Switches

PSX Programmable PCIe Switches
16 GT/sec PCIe Gen 4

Direct Memory Access (DMA)

Secure boot

PFX: Up to 52 ports, x1*/x2/x4/x8/x16 port bifurcation, 24 virtual switches, 48 NTBs, up to 48 hot plug controls, dynamic modes, error containment

PSX: Superset of PFX features, enables PCIe switch customization and integrated enclosure management

PAX: enables advanced PCIe fabric solution, multi-host sharing and composability of pooled GPUs, SR-IOV NVMe™ SSDs, NICs and other endpoints

*x1 natively on 4 ports
Switchtec PCIe Gen 3 SwitchesPM8536   PM8535   PM8534
PM8533   PM8532   PM8531
PM8546   PM8545   PM8544
PM8543   PM8542   PM8541
PM8566   PM8565   PM8564
PM8563   PM8562   PM8561
PM8576   PM8575   PM8574
PM8573   PM8572   PM8571
PFX Fanout PCIe Switches

PFX-L Fanout PCIe Switches

PFX-I Fanout PCIe Switches

PSX Programmable PCIe Switches 
8 GT/sec PCIe Gen 3

PFX: Up to 48 ports, x2/x4/x8/x16 port bifurcation, 24 virtual switches, 48 NTBs, up to 48 hot plug controls, dynamic modes, error containment

PFX-L:  Up to 24 ports, x4/x8/x16 port bifurcation, 6 virtual switches, 2 NTBs, up to 6 hot plug controls

PFX-I: industrial temperature range
−40°C (Ta) to 105°C (Tj)

PSX: superset of PFX features, enables PCIe switch customization and integrated enclosure management
Clock BuffersZL40262
ZL40264
ZL40268
ZL40272
1:2 PCIe Gen 1–5 HCSL Buffer

1:4 PCIe Gen 1–5 HCSL Buffer

2:8 PCIe Gen 1–5 HCSL/LVDS/PECL

2:12 PCIe Gen 1–5 HCSL/LVDS/PECL
Low output skew: 50 ps

Low additive jitter: 32 fs

Individual OE pins

2:8/2:12 I2C capable
Clock GeneratorsZL30282
ZL30281
ZL30265
DSC557-03
DSC557-05
6 Output Preconfigured PCIe Gen 1–5, Pin-Selectable SSC

3 Output PCIe Gen 1–5

6 Output PCIe Gen 1–5, Programmable

2 Output MEMS Clock Generator PCIe Gen 4

4 output MEMS Clock Generator PCIe Gen 4
8 default configurations, selectable spread spectrum on or off
Output control through I2C or SPI
MEMS clock generator, fully integrated with external clock source to reduce board space
OscillatorsDSC1224DI1-100M0000
DSC1223DI1-100M0000
MX555ABD100M000
MX555ABB100M000
PCIe Gen 1–5 HCSL MEMS Oscillator

PCIe Gen 1–5 LVDS MEMS Oscillator

PCIe Gen 1–5 HCSL Crystal Oscillator

PCIe Gen 1–5 LVDS Crystal Oscillator
PCIe Gen 5 oscillators
CrystalsVXM7-1362-50M0000000
VXM7-9032-25M0000000
50 MHz Crystal
25 MHz Crystal
Verified crystal clock source for clock generator