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25G DAC

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25G Base SFP28 Direct Attach Cable

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1. Data Sheet All contents are Copyright © 1996 – 20 1 7 W ave S plitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 1 of 4 25Gb/S SFP28 Direct Attach Cable P /N: WST - S28 - DACPx - x SFP28 Module Pad Assignments and Descriptions Features: ◼ Compliant with SFF - 8431 ◼ Compliant with SFP28 MSA ◼ Low Power Consumption ◼ Lower cost solution as compared to fiber transmissions ◼ Lowest total system EMI solution ◼ Optimized design for signal integrity ◼ Supports Serial ID Functionality through EEPROM (SFF - 84 72) ◼ RoHS - 6 Compliant

4. Page 4 of 4 Document Number: 95 - 0254 - V1.0 25Gb/S SFP28 Direct Attach Cable WST - S28 - DACPx - x Modification History Revision Date Description Originator Review Approved V 1.0 16 - Jul - 20 1 9 New Issue Ivy Chen T om Tang T om Tang V1.1 10 - Dec - 19 O rde r Information updated Ivy Chen T om Tang T om Tang All specification data are accurate on the date of publication for product comparisons and ordering information. Wavesplitter Technologies, Inc. reserves the right to change specifications without notice. U.S. Branch 208 0 Rancho Higuera Ct. Fremont, CA 9 45 3 9, USA Tel: 510 - 651 - 7800 Fax : 510 - 651 - 7822 Taipei Headquarters 16F - 5, No. 75, Sec. 1, Xintai 5th Rd., Xizhi Dist. , New Taipei C ity 221 01 , Taiwan Tel: +886 - 2 - 2 698 - 7208 Fax: +886 - 2 - 2 698 - 7210 ShenZhen Branch 610#, 6F, No.204 Building, 2nd Industrial zone Nanyou, Nanshan district, Sh enzhen, Guangdong China 518054 Tel: +86 - 755 - 86265980 Fax: +86 - 755 - 26642741

3. All content s are Copyright © 1996 - 20 1 9 Wave S plitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 3 of 4 Document Number: 95 - 0254 - V1.0 25Gb/S SFP28 Direct Attach Cable WST - S28 - DACPx - x Mechanical Design Unit: m m Ordering Information * Please contact our sales f or customized Part No Specification Package Data rate Gauge Cable Le ngth * Temp . Application WST - S28 - DACP 0 - 1 SFP28 to SFP28 25 G b/s 30 AWG 1m 0~70 o C 25 G Ethernet WST - S28 - DACP 0 - 2 SFP28 to SFP28 25 G b/s 30 AWG 2 m 0~70 o C 25 G Ethernet WST - S28 - DACP 0 - 3 SFP28 to SFP28 25 G b/s 30 AWG 3 m 0~70 o C 25 G Ethernet WST - S28 - DACP 6 - 5 SFP28 to SFP28 25 G b/s 26 AWG 5 m 0~70 o C 25 G Ethernet

2. All content s are Copyright © 1996 - 20 1 9 Wave S plitter Technologies, Inc. All rights reserved. Preliminary and Proprietary www.wavesplitter.com Page 2 of 4 Document Number: 95 - 0254 - V1.0 25Gb/S SFP28 Direct Attach Cable WST - S28 - DACPx - x PIN Logic Symbol Name / Description Note 1 VeeT Module Transmitter Ground 2 LVTTL - O TX_Fault N/A 3 LVTTL - I TX_Dis Transmitter Disable 4 LVTTL - I /O S DA 2 - Wire Serial Interface Da ta Line 5 LVTTL - I S CL 2 - Wire Serial Interface Clock 6 MOD_DEF0 Module present, connect to VeeT 7 LVTTL - I RS0 N/A 8 LVTTL - O RX_LOS LOS of Signal 9 LVTTL - I RS1 N/A 10 VeeR Module Receiver Ground 11 VeeR Module Receiver Ground 12 CML - O RD - Receiver Inverted Data Output 13 CML - O RD+ Receiver Data Output 14 VeeR Module Receiver Ground 15 VccR Module Receiver 3.3 V Supply 16 VccT Module Transmitter 3.3 V Supply 17 VeeT Module Transmitter Ground 1 8 CML - I TD + Transmitter Non - Inverted Data Input 19 CML - I TD - Transmitter Inverted Data Input 20 VeeT Module Transmitter Ground

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