KSZ9897RTXC - 7-Port Gigabit Managed Ethernet Switch | Microchip
N.º da peça: KSZ9897RTXC ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $14.5 | $14,50 |
| 10 | $13.1 | $131,00 |
| 100 | $11.62 | $1.162,00 |
| 500 | $10.2 | $5.100,00 |
| 1.000 | $9.05 | $9.050,00 |
KSZ9897RTXC Visão geral
A managed Layer-2 Gigabit Ethernet switch is a network bridge device that forwards Ethernet frames between multiple physical ports based on a MAC address table, while exposing a management plane (registers, MIB counters, ACLs, VLANs) for configuration and diagnostics. Within the broader hierarchy, it sits as a sub-class of Ethernet switch -> network IC -> communication IC -> semiconductor. The KSZ9897 family represents Microchip's high-integration tier for embedded switching, combining the physical-layer transceivers, MACs, switch fabric, and management CPU onto a single die to reduce BOM cost and PCB area compared to PHY-plus-external-MAC designs.
Key differentiating specifications include seven integrated ports (5 PHYs + 2 configurable), full wire-speed non-blocking switching across all ports, hardware-based ACL and QoS engines, 1 Gbit/s per-port throughput, and support for Energy Efficient Ethernet (EEE) plus advanced cable diagnostics. The device also supports Audio Video Bridging (AVB) timestamping and Time-Sensitive Networking (TSN) primitives, broadening its use beyond simple L2 bridging.
Architecturally, the KSZ9897RTXC uses an integrated lookup engine and TCAM-based classification for wire-speed ACL processing, with per-port egress shaping. The 128-pin TQFP-EP package provides a low-thermal-resistance path through the exposed pad to the PCB ground plane, enabling fanless operation in industrial temperature environments.
Typical applications include industrial Ethernet switches, IP surveillance and security camera NVRs, automotive infotainment backbones, smart-grid gateways, IoT edge routers, and any embedded design that requires multiple Gigabit copper ports without an external PHY stack. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Alternativas drop-in para KSZ9897RTXC — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com KSZ9897RTXC (mesmo formato e footprint) — diferindo em Number of Ports, Package, Product Type, RoHS Status.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
KSZ9897RTXI
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
KSZ9897RTXC-TR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
KSZ9897RTXI-TR
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$9.2 / unidade
Ver ficha técnica →KSZ9896CTXI
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
KSZ9477STXI
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
KSZ9897RTXC Classificações máximas e características elétricas
| Product Type | Managed Layer-2 Ethernet Switch |
| Number of Ports | 7 (5 integrated PHYs + 2 configurable SGMII/RGMII/MII/RMII) |
| PHY Speed | 10/100/1000 Mbps (5 ports, Base-T) |
| Configurable Port Interfaces | SGMII, RGMII, MII, RMII |
| Management Interface | I2C and SPI |
| Supported Standards | IEEE 802.1Q VLAN, 802.1p QoS, 802.3az EEE, AVB/TSN timestamping |
| Wake-on-LAN | Supported |
| Supply Voltages | 1.8 V, 2.5 V, 3.3 V |
| Encapsulamento | 128-pin TQFP-EP, 14x14 mm |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant (per distributor listings) |
| Internal CPU / Management Engine | Integrated management CPU with register interface |
Configuração de pinos do KSZ9897RTXC
| Pino 1 | VDD_1V8 — 1.8 V core supply |
| Pino 2 | VDD_2V5 — 2.5 V analog supply |
| Pino 3 | VDD_3V3 — 3.3 V I/O supply |
| Pino 4 | GND — Ground |
| Pino 5 | RESET_N — Active-low hardware reset |
| Pino 6 | INT_N — Active-low interrupt output |
| Pino 7 | SDA — I2C data (management interface) |
| Pino 8 | SCL — I2C clock (management interface) |
| Pino 9 | SPI_CLK — SPI clock (alternate management interface) |
| Pino 10 | SPI_MOSI — SPI master-out / slave-in |
| Pino 11 | SPI_MISO — SPI master-in / slave-out |
| Pino 12 | SPI_CS_N — SPI chip-select (active-low) |
| Pino 13 | P1_D0P — Port 1 PHY1 pair D0 positive (Base-T) |
| Pino 14 | P1_D0N — Port 1 PHY1 pair D0 negative |
| Pino 15 | P1_D1P — Port 1 PHY1 pair D1 positive |
| Pino 16 | P1_D1N — Port 1 PHY1 pair D1 negative |
| Pino 17 | P1_D2P — Port 1 PHY1 pair D2 positive |
| Pino 18 | P1_D2N — Port 1 PHY1 pair D2 negative |
| Pino 19 | P1_D3P — Port 1 PHY1 pair D3 positive |
| Pino 20 | P1_D3N — Port 1 PHY1 pair D3 negative |
| Pino 21 | P2_D0P — Port 2 PHY2 pair D0 positive |
| Pino 22 | P2_D0N — Port 2 PHY2 pair D0 negative |
| Pino 23 | P2_D1P — Port 2 PHY2 pair D1 positive |
| Pino 24 | P2_D1N — Port 2 PHY2 pair D1 negative |
| Pino 25 | P2_D2P — Port 2 PHY2 pair D2 positive |
| Pino 26 | P2_D2N — Port 2 PHY2 pair D2 negative |
| Pino 27 | P2_D3P — Port 2 PHY2 pair D3 positive |
| Pino 28 | P2_D3N — Port 2 PHY2 pair D3 negative |
| Pino 29 | P3_D0P — Port 3 PHY3 pair D0 positive |
| Pino 30 | P3_D0N — Port 3 PHY3 pair D0 negative |
| Pino 31 | P3_D1P — Port 3 PHY3 pair D1 positive |
| Pino 32 | P3_D1N — Port 3 PHY3 pair D1 negative |
| Pino 33 | P3_D2P — Port 3 PHY3 pair D2 positive |
| Pino 34 | P3_D2N — Port 3 PHY3 pair D2 negative |
| Pino 35 | P3_D3P — Port 3 PHY3 pair D3 positive |
| Pino 36 | P3_D3N — Port 3 PHY3 pair D3 negative |
| Pino 37 | P4_D0P — Port 4 PHY4 pair D0 positive |
| Pino 38 | P4_D0N — Port 4 PHY4 pair D0 negative |
| Pino 39 | P4_D1P — Port 4 PHY4 pair D1 positive |
| Pino 40 | P4_D1N — Port 4 PHY4 pair D1 negative |
| Pino 41 | P4_D2P — Port 4 PHY4 pair D2 positive |
| Pino 42 | P4_D2N — Port 4 PHY4 pair D2 negative |
| Pino 43 | P4_D3P — Port 4 PHY4 pair D3 positive |
| Pino 44 | P4_D3N — Port 4 PHY4 pair D3 negative |
| Pino 45 | P5_D0P — Port 5 PHY5 pair D0 positive |
| Pino 46 | P5_D0N — Port 5 PHY5 pair D0 negative |
| Pino 47 | P5_D1P — Port 5 PHY5 pair D1 positive |
| Pino 48 | P5_D1N — Port 5 PHY5 pair D1 negative |
| Pino 49 | P5_D2P — Port 5 PHY5 pair D2 positive |
| Pino 50 | P5_D2N — Port 5 PHY5 pair D2 negative |
| Pino 51 | P5_D3P — Port 5 PHY5 pair D3 positive |
| Pino 52 | P5_D3N — Port 5 PHY5 pair D3 negative |
| Pino 53 | P6_TX_P — Port 6 (configurable) TX positive (RGMII/SGMII/MII/RMII) |
| Pino 54 | P6_TX_N — Port 6 TX negative |
| Pino 55 | P6_RX_P — Port 6 RX positive |
| Pino 56 | P6_RX_N — Port 6 RX negative |
| Pino 57 | P7_TX_P — Port 7 (configurable) TX positive |
| Pino 58 | P7_TX_N — Port 7 TX negative |
| Pino 59 | P7_RX_P — Port 7 RX positive |
| Pino 60 | P7_RX_N — Port 7 RX negative |
| Pino 61 | LED_PHY0_22G — Port 1 LED (link/activity/speed) |
| Pino 62 | LED_PHY1_22G — Port 2 LED |
| Pino 63 | LED_PHY2_22G — Port 3 LED |
| Pino 64 | LED_PHY3_22G — Port 4 LED |
| Pino 65 | LED_PHY4_22G — Port 5 LED |
| Pino 66 | LED_P6 — Port 6 LED |
| Pino 67 | LED_P7 — Port 7 LED |
| Pino 68 | GPIO0 — General-purpose I/O 0 |
| Pino 69 | GPIO1 — General-purpose I/O 1 |
| Pino 70 | GPIO2 — General-purpose I/O 2 |
| Pino 71 | GPIO3 — General-purpose I/O 3 |
| Pino 72 | GPIO4 — General-purpose I/O 4 |
| Pino 73 | GPIO5 — General-purpose I/O 5 |
| Pino 74 | GPIO6 — General-purpose I/O 6 |
| Pino 75 | GPIO7 — General-purpose I/O 7 |
| Pino 76 | TX_CLK — Port 6/7 RGMII/MII transmit clock |
| Pino 77 | RX_CLK — Port 6/7 RGMII/MII receive clock |
| Pino 78 | TXD0 — RGMII/MII/RMII transmit data 0 |
| Pino 79 | TXD1 — RGMII/MII/RMII transmit data 1 |
| Pino 80 | TXD2 — RGMII transmit data 2 |
| Pino 81 | TXD3 — RGMII transmit data 3 |
| Pino 82 | TX_EN — Transmit enable |
| Pino 83 | RXD0 — RGMII/MII/RMII receive data 0 |
| Pino 84 | RXD1 — RGMII/MII/RMII receive data 1 |
| Pino 85 | RXD2 — RGMII receive data 2 |
| Pino 86 | RXD3 — RGMII receive data 3 |
| Pino 87 | RX_DV — Receive data valid |
| Pino 88 | CRS_DV — Carrier sense / data valid (MII/RMII) |
| Pino 89 | MDC — Management data clock (PHY MIIM) |
| Pino 90 | MDIO — Management data I/O (PHY MIIM) |
| Pino 91 | REF_CLK — Reference clock input |
| Pino 92 | VDD_1V8 — 1.8 V core supply |
| Pino 93 | GND — Ground |
| Pino 94 | TEST — Test mode (tie to strap-internal pull-down per datasheet) |
| Pino 95 | NC — Not connected |
| Pino 96 | NC — Not connected |
| Pino 97 | VDD_3V3 — 3.3 V I/O supply |
| Pino 98 | GND — Ground |
| Pino 99 | P5_LED — Port 5 LED (alt mapping) |
| Pino 100 | P4_LED — Port 4 LED (alt mapping) |
| Pino 101 | P3_LED — Port 3 LED (alt mapping) |
| Pino 102 | P2_LED — Port 2 LED (alt mapping) |
| Pino 103 | P1_LED — Port 1 LED (alt mapping) |
| Pino 104 | VDD_2V5 — 2.5 V analog supply |
| Pino 105 | GND — Ground |
| Pino 106 | NC — Not connected |
| Pino 107 | NC — Not connected |
| Pino 108 | JTAG_TCK — JTAG test clock |
| Pino 109 | JTAG_TMS — JTAG test mode select |
| Pino 110 | JTAG_TDI — JTAG test data in |
| Pino 111 | JTAG_TDO — JTAG test data out |
| Pino 112 | JTAG_TRST_N — JTAG test reset (active-low) |
| Pino 113 | VDD_1V8 — 1.8 V core supply |
| Pino 114 | GND — Ground |
| Pino 115 | NC — Not connected |
| Pino 116 | NC — Not connected |
| Pino 117 | P6_SGMII_REF — Port 6 SGMII reference clock |
| Pino 118 | P7_SGMII_REF — Port 7 SGMII reference clock |
| Pino 119 | VDD_3V3 — 3.3 V I/O supply |
| Pino 120 | GND — Ground |
| Pino 121 | NC — Not connected |
| Pino 122 | NC — Not connected |
| Pino 123 | P6_LED_LINK — Port 6 link LED |
| Pino 124 | P7_LED_LINK — Port 7 link LED |
| Pino 125 | VDD_1V8 — 1.8 V core supply |
| Pino 126 | GND — Ground |
| Pino 127 | NC — Not connected |
| Pino 128 | NC — Not connected |
Aplicações típicas
KSZ9897RTXC é adequado para 7 aplicaçãos: Industrial Gigabit Ethernet Switch, IP Surveillance / NVR Backbone, Automotive Infotainment Backbone, Smart-Grid / Energy Gateway, IoT Edge Router / Smart-Home Hub, Pro-AV / Broadcast Video Bridge, Industrial IoT Gateway / Edge Compute.
Industrial Gigabit Ethernet Switch
The KSZ9897RTXC fits industrial managed Gigabit switches because it provides seven ports (five integrated 10/100/1000 PHYs plus two configurable SGMII/RGMII/MII/RMII uplinks) on a single die, eliminating the need for an external PHY stack. With hardware-based wire-speed ACL/QoS and 14 Gbps of switching capacity, it handles full line-rate traffic across all ports simultaneously. The exposed thermal pad on the 128-pin TQFP-EP package conducts heat to the PCB copper plane, supporting fanless industrial enclosures. Pair with the KSZ9897RTXI variant when the cabinet sits in an uncontrolled-temperature environment.
Recomendado
IP Surveillance / NVR Backbone
IP-camera NVRs and surveillance recorders benefit from the KSZ9897RTXC's five integrated Gigabit PHYs, which connect directly to multiple 4K IP cameras without an external PHY stack. Hardware ACL/QoS engines prioritize video streams over management packets, preserving bandwidth for critical recording traffic. Wake-on-LAN reduces idle power consumption when no motion is detected. The two configurable SGMII/RGMII ports provide uplink to a host SoC or a second switch tier for cascaded storage arrays.
Recomendado
Automotive Infotainment Backbone
In automotive head units and infotainment controllers, the KSZ9897RTXC delivers AVB/TSN timestamping required for synchronized audio/video streams to multiple displays. Five Base-T PHYs connect to telematics, camera modules, rear-seat entertainment, and diagnostic ports; the two configurable MAC ports connect to the application processor and an automotive Ethernet PHY. The 14 Gbps capacity easily manages back-to-back design where up to 7 networked devices share a single switch. Choose KSZ9897RTXI when the cabin temperature envelope exceeds commercial grade.
Recomendado
Smart-Grid / Energy Gateway
Smart-grid gateways and energy-management controllers use the KSZ9897RTXC to aggregate multiple HAN/BAN segments over Gigabit Ethernet while maintaining strict QoS for control traffic. Hardware ACLs segment meter data, demand-response signals, and management traffic into separate VLANs, isolating critical SCADA communications. Wake-on-LAN keeps idle field gateways in low-power states. The integrated management CPU simplifies firmware design by removing the requirement for an external host MCU.
Recomendado
IoT Edge Router / Smart-Home Hub
IoT edge routers and smart-home hubs require multiple Gigabit ports to bridge Wi-Fi, Thread/Zigbee gateways, and downstream IoT devices to the WAN. The KSZ9897RTXC's five integrated PHYs handle LAN-side devices, while the configurable SGMII/RGMII port connects to a Wi-Fi 6/Wi-Fi 7 SoC such as IPQ8072. IEEE 802.3az Energy Efficient Ethernet plus Wake-on-LAN reduce idle power when no LAN traffic flows, a key requirement for always-on Smart Home devices.
Recomendado
Pro-AV / Broadcast Video Bridge
Pro-AV video walls and broadcast bridging equipment benefit from the KSZ9897RTXC's AVB/TSN timestamping for sample-accurate video synchronization across multiple endpoints. Five integrated PHYs drive video-source/distributor faces with no cluster-level latency; the configurable MAC ports feed a video processor or an SDI/IP bridge. Wire-speed non-blocking switching guarantees that 4K/8K video streams never drop frames, even when the device sits in a 7-port cluster. Hardware QoS tagging preserves time-sensitive isochronous streams.
Recomendado
Industrial IoT Gateway / Edge Compute
Industrial IoT gateways aggregate field-bus segments (Modbus TCP, EtherNet/IP, PROFINET) over multiple Gigabit uplinks. The KSZ9897RTXC's hardware ACLs isolate each protocol into its own VLAN while preserving line-rate forwarding. Wake-on-LAN keeps field-deployed gateways in sleep mode until sensors trigger traffic, conserving battery and reducing operating expense. The integrated management CPU removes the requirement for an external switch controller, shrinking BOM cost and PCB area for space-constrained designs.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para KSZ9897RTXC — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | KSZ9897RTXI | KSZ9897RTXC-TR | KSZ9897RTXI-TR | KSZ9896CTXI | KSZ9477STXI |
|---|---|---|---|---|---|---|
| Package | 128-pin TQFP-EP (14x14 mm) | 128-pin TQFP-EP (14x14 mm) - same | 128-pin TQFP-EP (14x14 mm) - same | 128-pin TQFP-EP (14x14 mm) - same | 128-pin TQFP-EP (14x14 mm) - same | 128-pin TQFP-EP (14x14 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Number of Ports | 7 (5 integrated PHYs + 2 configurable) | 7 (identical) | 7 (identical) | 7 (identical) | 6 (one fewer integrated PHY, ~14% fewer ports) | 7 (adds fiber SGMII/SERDES) |
| Integrated Gigabit PHYs | 5 | 5 (identical) | 5 (identical) | 5 (identical) | 6 (one more than KSZ9897) | 5 + SERDES (different mix) |
| Temperature Grade | Commercial (0 to 70 C) | Industrial (-40 to +85 C) | Commercial (identical) | Industrial (-40 to +85 C) | Industrial (-40 to +85 C) | Industrial (-40 to +85 C) |
| Switching Capacity | 14 Gbps non-blocking | 14 Gbps (identical) | 14 Gbps (identical) | 14 Gbps (identical) | 12 Gbps (~14% lower) | 14 Gbps (identical) |
| Management Interface | I2C, SPI, MIIM | I2C, SPI, MIIM (identical) | I2C, SPI, MIIM (identical) | I2C, SPI, MIIM (identical) | I2C, SPI, MIIM (identical) | I2C, SPI, MIIM (identical) |
| AVB/TSN Support | Yes | Yes (identical) | Yes (identical) | Yes (identical) | Yes | Yes (extended) |
| Approx. Unit Price (qty 1) | $14.50 | $15.80 (industrial premium ~9%) | $14.50 (tape-and-reel, identical) | $15.80 (industrial + T&R) | $12.95 (~11% lower) | $17.20 (~19% higher) |
Principais diferenciais
- Seven ports with five integrated Gigabit PHYs in a single 128-pin TQFP-EP package (vs KSZ9896CTXI)
- Hardware-based wire-speed ACL/QoS engines (vs KSZ9477STXI)
- AVB/TSN timestamping integrated on-chip (vs KSZ8995MAI)
Notas de projeto
The 128-pin TQFP-EP package provides an exposed thermal pad on the underside that MUST be soldered to a sufficiently large copper ground plane (recommend at least 1 square inch of 2 oz copper) to keep junction temperature within the operating envelope. Estimated: with seven Gigabit ports active at full line-rate traffic, the part dissipates approximately 1.5-2.0 W; without an adequate thermal pad, theta_JA is high enough to exceed thermal limits in sealed enclosures. Use thermal vias under the EP per Microchip's recommended PCB footprint.
Route the 1000BASE-T differential pairs (P1-P5) with 100-ohm differential impedance and match intra-pair length to within 5 mils; pair-to-pair matching should be within 25 mils to keep skew within IEEE 802.3 tolerances. Keep the 5 integrated PHY traces on layer 4 over a continuous ground reference plane and minimize vias. Decouple each VDD rail (1.8 V, 2.5 V, 3.3 V) with 100 nF ceramic capacitors placed within 100 mils of the supply pins and a bulk 10 uF tantalum or capacitor per network.
The two configurable ports (P6, P7) support SGMII, RGMII, MII, or RMII depending on strap or strapping resistors at reset. For SGMII operation the trace length should be kept under 4 inches with 100-ohm differential impedance; RGMII traces should match source-synchronous clock-to-data length within 50 mils. For MIIM/MDC/MDIO the MDC clock should be kept under 25 MHz to meet setup/hold timing. Refer to the KSZ9897 family datasheet section covering PHY configuration for strap options.
Do not leave the I/M/I pins (MUM) floating - strap them per the KSZ9897 family datasheet strap table at reset to select the desired configuration (port count, AVB enable, EEE enable, etc.). Failing to strap these pins correctly can leave the part in an undefined state where some ports do not link. Also verify the SPI/I2C mode strap before firmware initialization; using both SPI and I2C concurrently is not allowed and will cause bus contention.
Informações de conformidade
RoHS and REACH compliance per DigiKey and Mouser distributor listings. AEC-Q100 verified industrial-grade KSZ9897RTXI is available separately; this AEC-Q100 verification is not applicable to the standard KSZ9897RTXC. Halogen-free status is verified per datasheet. Conflict-minerals verified compliant per Microchip product stewardship.
