Name: KS8721B
Brand: Microchip Technology
SKU: KS8721B
Availability: InStock
Rating: 5 (160 reviews)

KS8721B

For Reference Only

Part Number	KS8721B
Manufacturer	Microchip Technology
Description	IC TXRX PHY 10/100 2.5V 48SSOP
Datasheet	KS8721B Specifications
Package	48-BSSOP (0.295", 7.50mm Width)
ECAD
In Stock	242,052 piece(s)
Unit Price	Request a Quote
Lead Time	Can Ship Immediately
Estimated Delivery Time	May 23 - May 28 (Choose Expedited Shipping)
Request for Quotation

Payment Methods
Delivery Services

Part Number # KS8721B (Interface - Drivers, Receivers, Transceivers) is manufactured by Microchip Technology and distributed by Heisener. Being one of the leading electronics distributors, we carry many kinds of electronic components from some of the world’s top class manufacturers. Their quality is guaranteed by its stringent quality control to meet all required standards.

For KS8721B specifications/configurations, quotation, lead time, payment terms of further enquiries please have no hesitation to contact us. To process your RFQ, please add KS8721B with quantity into BOM. Heisener.com does NOT require any registration to request a quote of KS8721B.

KS8721B Specifications

Manufacturer	Microchip Technology
Category	Integrated Circuits (ICs) - Interface - Drivers, Receivers, Transceivers
Package	48-BSSOP (0.295", 7.50mm Width)
ECAD
Series	-
Type	Transceiver
Protocol	MII, RMII
Number of Drivers/Receivers	1/1
Duplex	Full
Receiver Hysteresis	-
Data Rate	-
Voltage - Supply	2.375 V ~ 2.625 V
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	48-BSSOP (0.295", 7.50mm Width)
Supplier Device Package	48-SSOP

KS8721B Reviews

Ira*****linas

April 6, 2023

★ ★ ★ ★ ★

Purchased this in May and didn't use it until last week. worked and all was good.

Embe*****Ganesh

April 1, 2023

★ ★ ★ ★ ★

Great product & fast shipping. Works as they should.

Cory*****dova

April 1, 2023

★ ★ ★ ★ ★

To be honest, I think you are doing an outstanding job.

Dev*****Kent

March 29, 2023

★ ★ ★ ★ ★

These little guys worked perfect for my wiring project. Reliable, good quality.

Anna*****Meyers

March 28, 2023

★ ★ ★ ★ ★

I got a very helpful customer service here. Definitely will order my electronics needs again.

Cale*****scher

February 23, 2023

★ ★ ★ ★ ★

Arrived as described and well packaged. Sent very quickly after payment.

Write a Review

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KS8721B Packaging

KS8721B FAQ

1. How to order KS8721B on Heisener?

Currently, Heisener only provide peer-to-peer order processing. While you submit the RFQ, our professional agent will contact you with the competitive prices in the global market, and our agent will prompt you to finish the order if you accept our offers.
2. How does Heisener guarantee that KS8721B is from the original manufacturer or authorized agents?

We have a professional and experienced quality control team to strictly verify and test the KS8721B. All suppliers must pass our qualification reviews before they can publish their products including KS8721B on Heisener; we pay more attention to the channels and quality of KS8721B products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
3. Are the KS8721B price and inventory displayed accurate?

The price and inventory of KS8721B fluctuates frequently and cannot be updated in time, it will be updated periodically within 24 hours. And, our quotation usually expires after 5 days.
4. What forms of payment are accepted?

Wire Transfer, PayPal, Alipay, Wechat, Credit Card, Western Union, MoneyGram, and Escrow are all acceptable.

Warm Tips: Some orders in certain payment forms may require handling fee.
5. How is the shipping arranged?

Customers can choose industry-leading freight companies, including DHL, UPS, FedEx, TNT, and Registered Mail. Shipping insurance is also available.

Once your order has been processed for shipment, our salesperson will send you an email advising you of the shipping status and tracking number.

Warm Tips: It may take up to 24 hours for the carriers to display tracking information. Usually, express delivery takes 3-5 days, and registered mail takes 25-60 days.
6. What is the process for return or replacement of KS8721B?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the KS8721B we delivered, we will accept the replacement or return of the KS8721B only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of KS8721B.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations
7.How to contact us to get technical supports, such as KS8721B pin diagram, KS8721B datasheet?

If you need any after-sales service, please do not hesitate to contact us.

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KS8721B Guarantees

Service Guarantees

We guarantee 100% customer satisfaction.

Our experienced sales team and tech support team back our services to satisfy all our customers.

Quality Guarantees

We provide 90 days warranty.

If the items you received were not in perfect quality, we would be responsible for your refund or replacement, but the items must be returned in their original condition.

Global Supply Chains - Reliable and Authorized Distributor Resources

Part Number

Manufacturer

Description

Stock

KS8721B

D# KS8721B

Micrel Inc

SSOP 48/CÂ°/2.5V 10/100BasTX/FX MII Physical Layer Transceiver - Bulk (Alt: KS8721B)

RoHS: Not Compliant

Part Number

Manufacturer

Description

Stock

KS8721BLI

Micrel Inc

Part Number	Manufacturer	Description	Stock
KS8721BT-EVAL	Micrel Inc	BOARD EVAL EXPERIMENT KS8721BT	0
KS8721B-EVAL	Micrel Inc	BOARD EVAL EXPERIMENT KS8721B	0
KS8721BL TR	Micrel Inc	IC TXRX PHY 10/100 3.3V 48LQFP	0
KS8721BL-EVAL	Micrel Inc	BOARD EVAL EXPERIMENT KS8721BL	0
KS8721BLI	Micrel Inc	TXRX 10/100 3.3V 48-LQFP	0
KS8721BL	Micrel Inc	IC TXRX PHY 10/100 3.3V 48LQFP	0
KS8721BA4	Micrel Inc	TXRX 10/100 3.3V 48-SSOP	0
KS8721BLA4	Micrel Inc	TXRX 10/100 3.3V 48-LQFP	0
KS8721BI	Micrel Inc	IC TXRX PHY 10/100 2.5V 48SSOP	0
KS8721BMC-EVAL	Micrel Inc	BOARD EVAL EXPERIMENT KS8721BMC	0
KS8721B TR	Micrel Inc	IC TXRX PHY 10/100 2.5V 48SSOP	0
KS8721BA4 TR	Micrel Inc	TXRX 10/100 3.3V 48-SSOP	0
KS8721B	Micrel Inc	IC TXRX PHY 10/100 2.5V 48SSOP	0
KS8721BLA4 TR	Micrel Inc	TXRX 10/100 3.3V 48-LQFP	0
KS8721BT	Micrel Inc	IC TXRX PHY 10/100 2.5V 48SSOP	0

Part Number

Manufacturer

Description

Stock

KS8721BT

Micrel Inc

N/A (ship within 1day) - D/C 2003

169

Part Number	Manufacturer	Description	Stock
KS8721BL D# KS8721BL-ND	Microchip Technology Inc	IC TRANSCEIVER FULL 1/1 48LQFP	0
KS8721BA4-TR D# KS8721BA4-TR-ND	Microchip Technology Inc	IC TRANSCEIVER FULL 1/1 48SSOP	0
KS8721BLA4 D# KS8721BLA4-ND	Microchip Technology Inc	IC TRANSCEIVER 1/1 48LQFP	0
KS8721BI D# KS8721BI-ND	Microchip Technology Inc	IC TRANSCEIVER FULL 1/1 48SSOP	0
KS8721BA4 D# KS8721BA4-ND	Microchip Technology Inc	IC TRANSCEIVER FULL 1/1 48SSOP	0
KS8721B D# 2156-KS8721B-MI-ND	Rochester Electronics LLC	IC TRANSCEIVER FULL 1/1 48SSOP	1
KS8721BMC-EVAL D# 576-1008-ND	Microchip Technology Inc	BOARD EVAL EXPERIMENT KS8721BMC	0
KS8721BT D# KS8721BT-ND	Microchip Technology Inc	IC TRANSCEIVER FULL 1/1 48TQFP	0
KS8721B-TR D# KS8721B-TR-ND	Microchip Technology Inc	IC TRANSCEIVER FULL 1/1 48SSOP	0
KS8721BT-EVAL D# 576-1009-ND	Microchip Technology Inc	BOARD EVAL EXPERIMENT KS8721BT	0
KS8721B-EVAL D# 576-1006-ND	Microchip Technology Inc	BOARD EVAL EXPERIMENT KS8721B	0
KS8721BLI D# KS8721BLI-ND	Microchip Technology Inc	IC TRANSCEIVER FULL 1/1 48LQFP	0
KS8721BL-TR D# KS8721BL-TR-ND	Microchip Technology Inc	IC TRANSCEIVER FULL 1/1 48LQFP	0
KS8721BL-EVAL D# 576-1007-ND	Microchip Technology Inc	BOARD EVAL EXPERIMENT KS8721BL	0

Part Number	Manufacturer	Description	Stock
KS8721B-A4 D# KS8721B-A4	Samsung Electro-Mechanics	Industry Leading ISO:9001/AS9120A Stocking Distributor of Obsolete & Hard to Find IC's/Semi's, Specializing in Altera/Xilinx. In-House Counterfeit Detection Lab. In Business 20 Years. Free Shipping on Orders Over $250. Buy American, Buy Direct	2870
KS8721BLTR D# KS8721BLTR	Samsung Electro-Mechanics	Industry Leading ISO:9001/AS9120A Stocking Distributor of Obsolete & Hard to Find IC's/Semi's, Specializing in Altera/Xilinx. In-House Counterfeit Detection Lab. In Business 20 Years. Free Shipping on Orders Over $250. Buy American, Buy Direct	1725
KS8721B D# KS8721B	Samsung Electro-Mechanics	Industry Leading ISO:9001/AS9120A Stocking Distributor of Obsolete & Hard to Find IC's/Semi's, Specializing in Altera/Xilinx. In-House Counterfeit Detection Lab. In Business 20 Years. Free Shipping on Orders Over $250. Buy American, Buy Direct	1477
KS8721BL D# KS8721BL	Samsung Electro-Mechanics	Industry Leading ISO:9001/AS9120A Stocking Distributor of Obsolete & Hard to Find IC's/Semi's, Specializing in Altera/Xilinx. In-House Counterfeit Detection Lab. In Business 20 Years. Free Shipping on Orders Over $250. Buy American, Buy Direct	3808
KS8721BT D# KS8721BT	Samsung Electro-Mechanics	Industry Leading ISO:9001/AS9120A Stocking Distributor of Obsolete & Hard to Find IC's/Semi's, Specializing in Altera/Xilinx. In-House Counterfeit Detection Lab. In Business 20 Years. Free Shipping on Orders Over $250. Buy American, Buy Direct	2874
KS8721BTR D# KS8721BTR	Samsung Electro-Mechanics	Industry Leading ISO:9001/AS9120A Stocking Distributor of Obsolete & Hard to Find IC's/Semi's, Specializing in Altera/Xilinx. In-House Counterfeit Detection Lab. In Business 20 Years. Free Shipping on Orders Over $250. Buy American, Buy Direct	4085

Part Number	Manufacturer	Description	Stock
KS8721BL	MICREL	In stock shipping within 2days	300
KS8721BTR	MICREL	In stock shipping within 2days	17260
KS8721BT	MICREL	In stock shipping within 2days	8660
KS8721B-A4-TR	MICREL	In stock shipping within 2days	1784
KS8721B-A4	KENDIN	In stock shipping within 2days	3876
KS8721B	MICREL	In stock shipping within 2days	17260

Part Number	Manufacturer	Description	Stock
KS8721BES		OEM/CM QUOTES ONLY \| NO BROKERS	371
KS8721B	KENDIN	OEM/CM QUOTES ONLY \| NO BROKERS	3431
KENDINKS8721B	KENDIN	OEM/CM QUOTES ONLY \| NO BROKERS	116
KS8721BLTR	Micrel Inc	OEM/CM QUOTES ONLY \| NO BROKERS	151
KS8721BLA4	Micrel Inc	OEM/CM QUOTES ONLY \| NO BROKERS	6
KS8721BA4	Micrel Inc	OEM/CM QUOTES ONLY \| NO BROKERS	3619
KS8721BLI	MICROCH	OEM/CM QUOTES ONLY \| NO BROKERS	580
KS8721BA4TR	Micrel Inc	OEM/CM QUOTES ONLY \| NO BROKERS	306
KS8721BI	Micrel Inc	OEM/CM QUOTES ONLY \| NO BROKERS	277
KS8721BL		OEM/CM QUOTES ONLY \| NO BROKERS	3480
KS8721BTR	Micrel Inc	OEM/CM QUOTES ONLY \| NO BROKERS	19698
KS8721BT	Micrel Inc	OEM/CM QUOTES ONLY \| NO BROKERS	19466

Part Number	Manufacturer	Description	Stock
KS8721BA43616	Microchip Technology Inc	OEM/CM ONLY	1100
KS8721B540	Microchip Technology Inc	OEM/CM ONLY	850
KS8721BA3	Microchip Technology Inc	OEM/CM ONLY	7818
KS8721BLZ	Microchip Technology Inc	OEM/CM ONLY	2464

Part Number

Manufacturer

Description

Stock

KS8721BT

Kendin

in stock - can ship the same day

Part Number	Manufacturer	Description	Stock
KS8721B-A4	Microchip Technology Inc	OEM/CM Immediate delivery	3616
KS8721BTR	Micrel Inc	OEM/CM Immediate delivery	17000
KS8721BT	Micrel Inc	OEM/CM Immediate delivery	8400
KS8721B	Microchip Technology Inc	OEM/CM Immediate delivery	5640

Part Number	Manufacturer	Description	Stock
KS8721BLI D# NS-KS8721BLI	Micrel Inc	OEM/CM ONLY	4162
KS8721B-EVAL D# NS-KS8721B-EVAL	Micrel Inc	OEM/CM ONLY	7597
KS8721BT-EVAL D# NS-KS8721BT-EVAL	Micrel Inc	OEM/CM ONLY	6357
KS8721BL TR D# NS-KS8721BL TR	Micrel Inc	OEM/CM ONLY	7694
KS8721BL-EVAL D# NS-KS8721BL-EVAL	Micrel Inc	OEM/CM ONLY	6969
KS8721BT D# NS-KS8721BT	Micrel Inc	OEM/CM ONLY	9345
KS8721BL D# NS-KS8721BL	Micrel Inc	OEM/CM ONLY	4727
KS8721BMC-EVAL D# NS-KS8721BMC-EVAL	Micrel Inc	OEM/CM ONLY	6123
KS8721B TR D# NS-KS8721B TR	Micrel Inc	OEM/CM ONLY	4253
KS8721BI D# NS-KS8721BI	Micrel Inc	OEM/CM ONLY	5389
KS8721B D# NS-KS8721B	Micrel Inc	OEM/CM ONLY	4929

Part Number	Manufacturer	Description	Stock
KS8721B	Microchip Technology Inc	LAN Transceiver, Single, 48 Pin, Plastic, SSOP	56
KS8721BL	Micrel Inc	IC TXRX PHY 10/100 3.3V 48LQFP	29
KS8721BT	Micrel Inc	DATACOM, ETHERNET TRANSCEIVER, PQFP48	135

Part Number

Manufacturer

Description

Stock

KS8721B

D# KS8721B

Micrel Inc

Semiconductor

2000

Part Number

Manufacturer

Description

Stock

KS8721B

Micrel Inc

2.5V 10/100BASTX/FX MII PHYSICAL LAYER TRANSCEIVER

RoHS: Not Compliant

Part Number	Manufacturer	Description	Stock
KS8721BES		OEM/CM ONLY	336
KENDIN KS8721B	KENDIN	OEM/CM ONLY	116
KS8721BTR	Micrel Inc	OEM/CM ONLY	11390
KS8721BLTR	Micrel Inc	OEM/CM ONLY	275
KS8721B	Micrel Inc	OEM/CM ONLY	7220
KS8721B A4	Micrel Inc	OEM/CM ONLY	3136
KS8721BT	Micrel Inc	OEM/CM ONLY	705
KS8721BLI	Micrel Inc	OEM/CM ONLY	299
KS8721BL	Micrel Inc	OEM/CM ONLY	496
KS8721B A4TR	Micrel Inc	OEM/CM ONLY	275
KS8721BI	Micrel Inc	OEM/CM ONLY	309

Part Number	Manufacturer	Description	Stock
KS8721BTR	Micrel Inc	IN stock Immediate delivery	16985
KS8721BT	Micrel Inc	IN stock Immediate delivery	8415
KS8721B-A4	KENDIN	IN stock Immediate delivery	3631
KS8721B	KENDIN	IN stock Immediate delivery	5655

Part Number	Manufacturer	Description	Stock
KS8721B-A4	NFORE	shipping today	10
KS8721BTR	KENDIN	shipping today	9862
KS8721B	KENDIN	shipping today	207
KS8721BLI	Micrel Inc	shipping today	1716
KS8721BL	Micrel Inc	shipping today	3206
KS8721BI	Micrel Inc	shipping today	2046
KS8721B-A4-TR	Micrel Inc	shipping today	207

Part Number	Manufacturer	Description	Stock
KS8721B	Micrel Inc	RFQ	663
KS8721BTR	KENDIN	RFQ	5355
KS8721BLA4	Micrel Inc	RFQ	14848
KS8721BLI	Micrel Inc	RFQ	14489
KS8721BL1	Micrel Inc	RFQ	9110
KS8721BT	Micrel Inc	RFQ	6685

Part Number

Manufacturer

Description

Stock

KS8721BLI

Microchip Technology Inc

IC TXRX PHY 10/100 3.3V 48LQFP

616

KS8721BL

Micrel Inc

3.3V 10/100 BASE-TX/FX PHYSICAL LAYER TRANSCEIVER

770

Quick Inquiry

KS8721B

Certified Quality

Heisener's commitment to quality has shaped our processes for sourcing, testing, shipping, and every step in between. This foundation underlies each component we sell.

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