KS8721BL

Product Overview

Category

KS8721BL belongs to the category of Ethernet Physical Layer Transceivers.

Use

The KS8721BL is used for connecting Ethernet devices to a network. It provides the necessary interface between the physical layer and the media access control (MAC) layer.

Characteristics

• Supports 10/100 Mbps data rates
• Compliant with IEEE 802.3 standards
• Low power consumption
• Small form factor
• Robust performance in harsh environments

Package

The KS8721BL comes in a compact package, suitable for surface mount technology (SMT) assembly. It is available in various package options, including QFN and LQFP.

Essence

The essence of KS8721BL lies in its ability to facilitate reliable and high-speed communication between Ethernet devices.

Packaging/Quantity

The KS8721BL is typically packaged in reels or trays, depending on the manufacturer's specifications. The quantity per package varies but is commonly around 250 units.

Specifications

• Data Rates: 10/100 Mbps
• Supply Voltage: 3.3V
• Operating Temperature Range: -40°C to +85°C
• Interface: MII (Media Independent Interface)
• Supported Protocols: IEEE 802.3, Auto-Negotiation, MDI/MDIX

Detailed Pin Configuration

The KS8721BL has a total of 48 pins. Here is a detailed pin configuration:

1. VDDA
2. VSSA
3. REFCLKO
4. VDDIO
5. VSSIO
6. TXEN
7. TXD[0]
8. TXD[1]
9. TXD[2]
10. TXD[3]
11. TXD[4]
12. TXD[5]
13. TXD[6]
14. TXD[7]
15. VDDIO
16. VSSIO
17. CRS
18. RXD[0]
19. RXD[1]
20. RXD[2]
21. RXD[3]
22. RXD[4]
23. RXD[5]
24. RXD[6]
25. RXD[7]
26. VDDIO
27. VSSIO
28. MDC
29. MDIO
30. VDDA
31. VSSA
32. XTALI
33. XTALO
34. VDDIO
35. VSSIO
36. LED[0]
37. LED[1]
38. LED[2]
39. LED[3]
40. VDDIO
41. VSSIO
42. VDDIO
43. VSSIO
44. VDDIO
45. VSSIO
46. VDDIO
47. VSSIO
48. VDDIO

Functional Features

• Auto-Negotiation: The KS8721BL supports auto-negotiation, allowing it to automatically determine the best data rate and duplex mode for communication.
• Link Quality Indicator (LQI): It provides a signal indicating the quality of the link, helping in diagnosing network issues.
• Energy-Efficient Ethernet (EEE): The transceiver incorporates EEE technology, reducing power consumption during periods of low network activity.

Advantages and Disadvantages

Advantages

• High-speed data transmission
• Compact size
• Low power consumption
• Robust performance in harsh environments

Disadvantages

• Limited to 10/100 Mbps data rates
• Does not support Gigabit Ethernet

Working Principles

The KS8721BL operates by receiving and transmitting electrical signals over the Ethernet cable. It converts the digital data from the MAC layer into analog signals suitable for transmission and vice versa.

Detailed Application Field Plans

The KS8721BL is widely used in various applications, including: - Network switches - Routers - Industrial automation systems - Embedded systems - Internet of Things (IoT) devices

Alternative Models

Here are some alternative models that can be considered as alternatives to the KS8721BL: - KSZ8081RNB - DP83848CVV - LAN8720A

These models offer similar functionality and compatibility with Ethernet networks.

In conclusion, the KS8721BL is a versatile Ethernet Physical Layer Transceiver that provides reliable and high-speed communication between Ethernet devices. Its compact size, low power consumption, and robust performance make it suitable for a wide range of applications. However, its limitation to 10/100 Mbps data rates and lack of Gigabit Ethernet support should be taken into consideration when selecting the appropriate transceiver for specific requirements.