Datasheet > AMIS-42770GHA

AMIS-42770GHA

更新时间： 2024-11-30 03:08:43

品牌	Logo	应用领域
AMI		光电二极管
页数	文件大小	规格书
16页	563K
描述
DATACOM, INTERFACE CIRCUIT, PDSO20, 0.300 INCH, GREEN, PLASTIC, SOIC-20

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AMIS-42770GHA 数据手册

AMIS-42770 Dual High-Speed CAN Transceiver

For Long Networks

Data Sheet

1. 0 General Description

Controller Area Network (CAN) is a serial communication protocol, which supports distributed real-time control and multiplexing

with high safety level. Typical applications of CAN-based networks can be found in automotive and industrial environments.

The AMIS-42770 Dual-CAN transceiver is the interface between up to two physical bus lines and the protocol controller and will be

used for serial data interchange between different electronic units at more than one bus line. It can be used for both 12V and 24V

systems.

The circuit consists of following blocks:

•

Two differential line transmitters

Two differential line receivers

Interface to the CAN protocol handler

Interface to expand the number of CAN busses

Logic block including repeater function and the feedback suppression

Thermal shutdown circuit (TSD)

Due to the wide common-mode voltage range of the receiver inputs, the AMIS-42770 is able to reach outstanding levels of

electromagnetic susceptibility (EMS). Similarly, extremely low electromagnetic emission (EME) is achieved by the excellent

matching of the output signals.

2. 0 Key Features

•

Fully compatible with the ISO 11898-2 standard

Certified “Authentication on CAN Transceiver Conformance (d1.1)”

Wide range of bus communication speed (up to 1Mbit/s in function of the bus topology)

Allows low transmit data rate in networks exceeding 1km

Ideally suited for 12V and 24V industrial and automotive applications

Low EME: common-mode-choke is no longer required

Differential receiver with wide common-mode range (+/- 35V) for high EMS

No disturbance of the bus lines with an un-powered node

Prolonged dominant time-out function allowing communication speeds down to 1kbit/s

Thermal protection

Bus pins protected against transients

Short circuit proof to supply voltage and ground

3. 0 Technical Characteristics

Table 1: Technical Characteristics

Symbol

V_CANHx

V_CANLx

Parameter

Conditions

0 < V_CC< 5.25V; no time limit

Min.

-45

1.5

Max.

+45

Unit

DC voltage at pin CANH1/2

DC voltage at pin CANL1/2

Differential bus output voltage in dominant state

V_{i(dif)(bus_dom)}

42.5Ω < R_LT< 60Ω

Guaranteed differential receiver threshold and

leakage current

CM-range

Input common-mode range for comparator

-35

+35

Common-mode peak

Common-mode step

See Figure 10 and Figure 11⁽¹⁾

-1000

-250

1000

250

V_CM-peak

V_CM-step

Note:

(1) The parameters V_CM-peakand V_CM-stepguarantee low EME.

AMI Semiconductor – October 2007, Rev. 1.0

www.amis.com Specifications subject to change without notice

12 3 4 5 6 7...16

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