RC19302A00AGNT#BD0 datasheet(1/58 Pages) RENESAS

Part #	RC19302A00AGNT#BD0

Description	PCIe Gen7 1.8V 2-Input Clock Mux Family with LOS

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Manufacturer	RENESAS [Renesas Technology Corp]

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Datasheet

R31DS0210EU0106 Rev.1.06

Page 1

May 11, 2026

Description

The RC193xx (RC19302, RC19304, RC19308) ultra-

high performance clock muxes support PCIe Gen 1-7.

They provide a Loss-Of-Signal (LOS) output for

system monitoring and redundancy. The devices also

incorporate Power Down Tolerance (PDT), Flexible

Power Sequencing (FPS), and Automatic Clock

Parking (ACP) features, easing system design. They

can drive both source-terminated and double-

terminated loads, operating up to 400MHz.

The family offers 2, 4, or 8 Low-Power (LP) HCSL

output pairs in 3 × 3, 4 × 4, and 6 × 6 mm packages.

The buffers support both Common Clock (CC) and

Independent Reference (IR) PCIe clock architectures.

Applications

▪ Cloud/High-performance computing

▪ nVME storage

▪ Networking

▪ AI Accelerators

Features

▪ Very Low Additive Phase Jitter:

• PCIe Gen5 CC: 6.9fs RMS (typ.)

• PCIe Gen6 CC: 4.1fs RMS (typ.)

• PCIe Gen7 CC: 2.9fs RMS (typ.)

• DB2000Q: 11.5fs RMS (typ.)

• 12kHz - 20MHz (156.25MHz): 42.8fs RMS (typ.)

▪ 2:N or dual x 1:N/2 modes (N is number of outputs)

▪ Power Down Tolerant (PDT) inputs

▪ Flexible Startup Sequencing (FSS)

▪ Automatic Clock Parking (ACP) upon loss of

selected CLKIN

▪ Spread-spectrum tolerant

▪ CLKIN accepts HCSL or LVDS signal levels

▪ Dedicated OEb pin per output

▪ -40 to +105°C, 1.8V ± 5% operation

▪ Devices provide:

• Pin or SMBus selectable 34Ω, 85Ω, or 100Ω

differential output impedance

• Pin or SMBus selectable output slew rate

• Pin or SMBus selectable output amplitude

• 9 SMBus addresses plus write protection

Figure 1. Simplified Block Diagram and Mux Logic

CLKSEL_tri

0

1

M

Bank 0 CLKIN0 CLKIN1 CLKIN0

Bank 1 CLKIN0 CLKIN1 CLKIN1

CLKb3

CLK3

CLK0

CLKb0

Clock

Detect

LOSb

1

M

0

1

M

0

CLKSEL_tri

CLKb7

CLK7

CLK4

CLKb4

Bank 0

CLKIN1

CLKINb 1

CLKIN0

CLKINb 0

Ban k 1

OEb[7:0]

2, 4 , or 8

Outputs

8

2, 4 , or 8 O utput Enables

RC193xx

PCIe Gen7 1.8V 2-Input Clock Mux Family with LOS

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Renesas Technology Corp	RC19302A00AGNT#BD0	1Mb / 62P	PCIe Gen7 1.8V 2-Input Clock Mux Family with LOS Rev.1.06 May 11, 2026

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