WCH

CH9121T

3.2V~3.4V Ethernet Transceiver TSSOP-20 Drivers, Receivers, Transceivers

TSSOP-20RoHSActive

Network serial port transparent transmission chip

Manufacturer: WCH
Manufacturer part #: CH9121T
Store part #: C45354919
Package / case: TSSOP-20
Category: Drivers, Receivers, Transceivers
Packaging: Tube-packed

Datasheet (PDF)

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1,122 in stock

#C45354919

Stock & price checked 5 days ago

Quantity	Unit price	Pack price
1+	₹522.92	₹522.92
10+	₹448.19	₹4,481.90
30+	₹403.65	₹12,109.50
72+	₹358.90	₹25,840.80
504+	₹338.04	₹1,70,372.16
1,008+	₹328.70	₹3,31,329.60

Quantity (min 1)

1 × ₹522.92

₹522.92

excl. GST

₹617.05 incl. 18% GST

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Dispatch in 7–10 working days
GST invoice with every order
Standard pack: 72 per tube

CH9121T

₹522.92 for 1 + GST

Specifications

Voltage - Supply: 3.2V~3.4V
Type: Ethernet Transceiver
Ethernet Speed Standards: 10BASE-T;100BASE-TX
number of channels: 2
Data Rate: 10Mbit/s;100Mbit/s
Operating Temperature: -40℃~+85℃
Features: Programmable LED indication;Power-on reset

Packaging & compliance

RoHS: RoHS
Lifecycle: Active
Packaging: Tube-packed
Standard pack: 72 / Tube
Sold per: Piece
Minimum order: 1
Unit weight: 0.226 g

Overview

CH9121 is a network serial transparent transmission chip integrating a 10/100M Ethernet MAC and PHY transceiver, fully compliant with IEEE 802.3. Its built-in TCP/IP stack enables bidirectional transparent transmission between network packets and serial data. The chip supports four operating modes — TCP Client, TCP Server, UDP Client, and UDP Server — with a maximum serial baud rate of 10Mbps. Parameters can be easily configured via host PC software or serial commands.

Key features

Integrated Ethernet MAC and PHY transceiver
Supports 10/100M, full-duplex/half-duplex auto-negotiation, IEEE802.3 compliant
Supports MDI/MDIX auto-crossover
I/O pins support 3.3V, 2.5V, 1.8V power supply, compatible with MCUs of various voltage standards
Built-in network port pull-up resistors and crystal oscillator matching capacitors, simplifying external circuitry
Built-in TCP/IP protocol stack, supports IPv4, ARP, ICMP, IGMP, UDP, TCP
Supports DHCP for automatic IP address acquisition and DNS domain name access
Operating modes: TCP Client, TCP Server, UDP Client, UDP Server
Supports two independent UART ports with independent transparent transmission
UART baud rate: 300bps ~ 10Mbps
Network parameters (operating mode, port, IP, etc.) configurable via PC software or serial commands
UART supports full-duplex and half-duplex communication, supports RS485 automatic TX/RX switching
LED status indicators for link and activity states
Provides virtual COM port software for PC
Supports keep-alive mechanism
Available in TSSOP20 and LQFP64M lead-free packages