KSZ8721B-TR

Product Overview

Category

The KSZ8721B-TR belongs to the category of Ethernet Physical Layer Transceivers.

Use

It is primarily used for providing physical layer connectivity in Ethernet-based communication systems.

Characteristics

• Supports 10/100 Mbps data rates
• Compliant with IEEE 802.3 standards
• Low power consumption
• Integrated termination resistors
• Supports Auto-MDIX (Automatic Medium Dependent Interface Crossover)
• Built-in signal conditioning capabilities

Package

The KSZ8721B-TR is available in a small form-factor package, suitable for surface mount technology (SMT) applications.

Essence

The essence of the KSZ8721B-TR lies in its ability to provide reliable and efficient Ethernet connectivity in various electronic devices.

Packaging/Quantity

This product is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Data Rates: 10/100 Mbps
• Supply Voltage: 3.3V
• Operating Temperature Range: -40°C to +85°C
• Interface: MII (Media Independent Interface)
• Package Type: 48-pin QFN (Quad Flat No-Lead)

Detailed Pin Configuration

The KSZ8721B-TR features a 48-pin QFN package with the following pin configuration:

1. TX_CLK
2. TX_EN
3. TXD[3]
4. TXD[2]
5. TXD[1]
6. TXD[0]
7. CRS_DV
8. RX_ER
9. RXD[3]
10. RXD[2]
11. RXD[1]
12. RXD[0]
13. COL
14. RX_DV
15. MDC
16. MDIO
17. VDDA
18. VSSA
19. REFCLK
20. VDDIO
21. VSSIO
22. VDDCORE
23. VSSCORE
24. VDDPLL
25. VSSPLL
26. PLL_LOCK
27. XTAL_IN
28. XTAL_OUT
29. VDDXTAL
30. VSSXTAL
31. VDDPLL2
32. VSSPLL2
33. PLL2_LOCK
34. XTAL2_IN
35. XTAL2_OUT
36. VDDXTAL2
37. VSSXTAL2
38. VDDPLL3
39. VSSPLL3
40. PLL3_LOCK
41. XTAL3_IN
42. XTAL3_OUT
43. VDDXTAL3
44. VSSXTAL3
45. VDDPLL4
46. VSSPLL4
47. PLL4_LOCK
48. XTAL4_IN

Functional Features

• Auto-negotiation of link speed and duplex mode
• Supports Energy Efficient Ethernet (EEE)
• Integrated loopback modes for diagnostics
• Supports Wake-on-LAN (WoL) functionality
• Built-in signal quality indicators
• Supports various LED configurations for link/activity indication

Advantages and Disadvantages

Advantages

• Low power consumption, suitable for energy-efficient designs
• Compact package size, ideal for space-constrained applications
• Compliance with industry standards ensures compatibility with a wide range of devices
• Integrated termination resistors simplify PCB layout and reduce component count

Disadvantages

• Limited to 10/100 Mbps data rates, not suitable for higher-speed Ethernet networks
• Lack of advanced features found in more advanced transceiver models

Working Principles

The KSZ8721B-TR operates by receiving and transmitting Ethernet data packets through the Media Independent Interface (MII). It performs signal conditioning, encoding, and decoding functions to ensure reliable communication between devices. The transceiver supports auto-negotiation to establish the link speed and duplex mode automatically.

Detailed Application Field Plans

The KSZ8721B-TR is widely used in various applications, including:

1. Network switches
2. Routers
3. Industrial automation systems
4. Embedded systems
5. IP cameras
6. Automotive electronics

Detailed and Complete Alternative Models

1. KSZ8081RNB
2. KSZ8041NL
3. DP83848CVV/NOPB
4. LAN8720A-CP
5. W5500

These alternative models offer similar functionality and can be considered as alternatives to the KSZ8721B-TR based on specific application requirements.

In conclusion, the KSZ8721B-TR is a versatile Ethernet Physical Layer Transceiver that provides reliable connectivity in various electronic devices. Its low power consumption, compact package size, and compliance with industry standards make it a popular choice for